[14] | 1 | /**CFile*********************************************************************** |
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| 2 | |
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| 3 | FileName [imgTfmBwd.c] |
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| 4 | |
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| 5 | PackageName [img] |
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| 6 | |
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| 7 | Synopsis [Routines for preimage computation using transition function |
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| 8 | method.] |
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| 9 | |
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| 10 | Description [] |
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| 11 | |
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| 12 | SeeAlso [] |
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| 13 | |
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| 14 | Author [In-Ho Moon] |
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| 15 | |
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| 16 | Copyright [Copyright (c) 1994-1996 The Regents of the Univ. of Colorado. |
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| 17 | All rights reserved. |
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| 18 | |
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| 19 | Permission is hereby granted, without written agreement and without license |
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| 20 | or royalty fees, to use, copy, modify, and distribute this software and its |
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| 21 | documentation for any purpose, provided that the above copyright notice and |
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| 22 | the following two paragraphs appear in all copies of this software. |
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| 23 | |
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| 24 | IN NO EVENT SHALL THE UNIVERSITY OF COLORADO BE LIABLE TO ANY PARTY FOR |
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| 25 | DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT |
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| 26 | OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF |
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| 27 | COLORADO HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 28 | |
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| 29 | THE UNIVERSITY OF COLORADO SPECIFICALLY DISCLAIMS ANY WARRANTIES, |
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| 30 | INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND |
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| 31 | FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS ON AN |
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| 32 | "AS IS" BASIS, AND THE UNIVERSITY OF COLORADO HAS NO OBLIGATION TO PROVIDE |
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| 33 | MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.] |
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| 34 | |
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| 35 | ******************************************************************************/ |
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| 36 | #include "imgInt.h" |
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| 37 | |
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| 38 | static char rcsid[] UNUSED = "$Id: imgTfmBwd.c,v 1.29 2002/08/18 04:47:07 fabio Exp $"; |
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| 39 | |
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| 40 | /*---------------------------------------------------------------------------*/ |
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| 41 | /* Constant declarations */ |
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| 42 | /*---------------------------------------------------------------------------*/ |
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| 43 | |
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| 44 | /*---------------------------------------------------------------------------*/ |
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| 45 | /* Type declarations */ |
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| 46 | /*---------------------------------------------------------------------------*/ |
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| 47 | |
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| 48 | /*---------------------------------------------------------------------------*/ |
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| 49 | /* Structure declarations */ |
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| 50 | /*---------------------------------------------------------------------------*/ |
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| 51 | |
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| 52 | /*---------------------------------------------------------------------------*/ |
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| 53 | /* Variable declarations */ |
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| 54 | /*---------------------------------------------------------------------------*/ |
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| 55 | |
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| 56 | /*---------------------------------------------------------------------------*/ |
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| 57 | /* Macro declarations */ |
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| 58 | /*---------------------------------------------------------------------------*/ |
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| 59 | |
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| 60 | /**AutomaticStart*************************************************************/ |
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| 61 | |
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| 62 | /*---------------------------------------------------------------------------*/ |
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| 63 | /* Static function prototypes */ |
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| 64 | /*---------------------------------------------------------------------------*/ |
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| 65 | |
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| 66 | static bdd_t * PreImageByDomainCofactoring(ImgTfmInfo_t *info, array_t *delta, bdd_t *image, array_t *relationArray, mdd_t *cofactorCube, mdd_t *abstractCube, int splitMethod, int turnDepth, int depth); |
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| 67 | static mdd_t * PreImageByStaticDomainCofactoring(ImgTfmInfo_t *info, array_t *vector, mdd_t *from, array_t *relationArray, int turnDepth, int depth); |
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| 68 | static bdd_t * PreImageByConstraintCofactoring(ImgTfmInfo_t *info, array_t *delta, bdd_t *image, int splitMethod, int turnDepth, int depth); |
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| 69 | static mdd_t * PreImageBySubstitution(ImgTfmInfo_t *info, array_t *vector, mdd_t *from); |
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| 70 | static bdd_t * PreImageMakeVectorCanonical(ImgTfmInfo_t *info, array_t *vector, bdd_t *image, array_t *relationArray, array_t **newVector, array_t **newRelationArray, mdd_t **cofactorCube, mdd_t **abstractCube); |
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| 71 | static bdd_t * PreImageMakeRelationCanonical(ImgTfmInfo_t *info, array_t *vector, bdd_t *image, array_t *relationArray, array_t **newVector, array_t **newRelationArray); |
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| 72 | static bdd_t * PreImageDeleteOneComponent(ImgTfmInfo_t *info, array_t *delta, int index, array_t **newDelta); |
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| 73 | static int PreImageChooseSplitVar(ImgTfmInfo_t *info, array_t *delta, bdd_t *img, int splitMethod, int split); |
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| 74 | static mdd_t * DomainCofactoring(ImgTfmInfo_t *info, array_t *vector, mdd_t *from, array_t *relationArray, mdd_t *c, array_t **newVector, array_t **newRelationArray, mdd_t **cofactorCube, mdd_t **abstractCube); |
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| 75 | static int CheckPreImageVector(ImgTfmInfo_t *info, array_t *vector, mdd_t *image); |
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| 76 | |
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| 77 | /**AutomaticEnd***************************************************************/ |
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| 78 | |
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| 79 | |
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| 80 | /*---------------------------------------------------------------------------*/ |
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| 81 | /* Definition of exported functions */ |
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| 82 | /*---------------------------------------------------------------------------*/ |
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| 83 | |
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| 84 | |
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| 85 | /*---------------------------------------------------------------------------*/ |
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| 86 | /* Definition of internal functions */ |
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| 87 | /*---------------------------------------------------------------------------*/ |
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| 88 | |
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| 89 | |
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| 90 | /**Function******************************************************************** |
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| 91 | |
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| 92 | Synopsis [Computes a preimage with transition function method.] |
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| 93 | |
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| 94 | Description [Computes a preimage with transition function method.] |
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| 95 | |
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| 96 | SideEffects [] |
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| 97 | |
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| 98 | ******************************************************************************/ |
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| 99 | bdd_t * |
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| 100 | ImgTfmPreImage(ImgTfmInfo_t *info, bdd_t *image) |
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| 101 | { |
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| 102 | bdd_t *preImg, *pre; |
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| 103 | int turnDepth; |
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| 104 | bdd_t *refResult, *one; |
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| 105 | array_t *relationArray; |
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| 106 | int partial; |
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| 107 | bdd_t *from; |
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| 108 | array_t *vector; |
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| 109 | |
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| 110 | if (bdd_is_tautology(image, 1)) { |
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| 111 | preImg = mdd_one(info->manager); |
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| 112 | return(preImg); |
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| 113 | } else if (bdd_is_tautology(image, 0)) { |
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| 114 | preImg = mdd_zero(info->manager); |
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| 115 | return(preImg); |
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| 116 | } |
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| 117 | |
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| 118 | info->maxIntermediateSize = 0; |
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| 119 | if (info->buildTR) { |
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| 120 | if (info->option->preSplitMethod == 4 && |
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| 121 | info->option->preSplitMaxDepth < 0 && |
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| 122 | info->option->buildPartialTR == FALSE && |
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| 123 | info->preKeepPiInTr == FALSE && |
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| 124 | info->option->preCanonical == FALSE) { |
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| 125 | mdd_t *range; |
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| 126 | range = ImgSubstitute(image, info->functionData, Img_D2R_c); |
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| 127 | preImg = ImgBddLinearAndSmooth(info->manager, range, |
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| 128 | info->bwdClusteredRelationArray, |
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| 129 | info->bwdArraySmoothVarBddArray, |
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| 130 | info->bwdSmoothVarCubeArray, |
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| 131 | info->option->verbosity); |
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| 132 | mdd_free(range); |
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| 133 | return(preImg); |
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| 134 | } |
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| 135 | relationArray = mdd_array_duplicate(info->bwdClusteredRelationArray); |
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| 136 | } else |
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| 137 | relationArray = NIL(array_t); |
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| 138 | |
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| 139 | one = mdd_one(info->manager); |
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| 140 | |
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| 141 | vector = info->vector; |
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| 142 | from = image; |
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| 143 | |
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| 144 | partial = 0; |
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| 145 | if (info->option->preSplitMethod == 0) { |
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| 146 | preImg = PreImageByDomainCofactoring(info, vector, from, |
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| 147 | NIL(array_t), NIL(mdd_t), NIL(mdd_t), |
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| 148 | info->option->preSplitMethod, 0, 0); |
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| 149 | } else if (info->option->preSplitMethod == 1) { |
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| 150 | preImg = PreImageByConstraintCofactoring(info, vector, from, |
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| 151 | info->option->preSplitMethod, |
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| 152 | 0, 0); |
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| 153 | } else if (info->option->preSplitMethod == 3) { |
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| 154 | preImg = PreImageBySubstitution(info, vector, from); |
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| 155 | } else { |
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| 156 | turnDepth = info->option->turnDepth; |
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| 157 | if (turnDepth == 0) { |
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| 158 | if (info->option->preSplitMethod == 2) { |
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| 159 | preImg = PreImageByConstraintCofactoring(info, vector, from, |
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| 160 | info->option->preSplitMethod, |
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| 161 | turnDepth, 0); |
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| 162 | } else |
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| 163 | preImg = ImgPreImageByHybrid(info, vector, from); |
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| 164 | } else if (info->option->preSplitMethod == 2) { |
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| 165 | preImg = PreImageByDomainCofactoring(info, vector, from, |
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| 166 | relationArray, |
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| 167 | NIL(mdd_t), NIL(mdd_t), |
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| 168 | info->option->preSplitMethod, |
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| 169 | turnDepth, 0); |
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| 170 | } else { |
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| 171 | if (info->buildTR) { |
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| 172 | if (info->buildTR == 2) { |
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| 173 | if (info->buildPartialTR) { |
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| 174 | preImg = PreImageByStaticDomainCofactoring(info, vector, |
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| 175 | from, relationArray, |
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| 176 | turnDepth, 0); |
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| 177 | partial = 1; |
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| 178 | } else { |
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| 179 | preImg = PreImageByStaticDomainCofactoring(info, NIL(array_t), |
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| 180 | from, relationArray, |
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| 181 | turnDepth, 0); |
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| 182 | } |
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| 183 | } else if (info->option->delayedSplit) { |
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| 184 | preImg = PreImageByDomainCofactoring(info, vector, from, |
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| 185 | relationArray, one, one, |
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| 186 | info->option->preSplitMethod, |
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| 187 | turnDepth, 0); |
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| 188 | } else { |
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| 189 | preImg = PreImageByDomainCofactoring(info, vector, from, |
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| 190 | relationArray, |
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| 191 | NIL(mdd_t), NIL(mdd_t), |
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| 192 | info->option->preSplitMethod, |
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| 193 | turnDepth, 0); |
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| 194 | } |
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| 195 | } else { |
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| 196 | preImg = PreImageByDomainCofactoring(info, vector, from, |
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| 197 | relationArray, |
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| 198 | NIL(mdd_t), NIL(mdd_t), |
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| 199 | info->option->preSplitMethod, |
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| 200 | turnDepth, 0); |
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| 201 | } |
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| 202 | } |
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| 203 | } |
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| 204 | mdd_free(one); |
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| 205 | |
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| 206 | if (info->option->debug) { |
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| 207 | if (info->buildTR == 2) { |
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| 208 | refResult = ImgPreImageByHybridWithStaticSplit(info, NIL(array_t), |
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| 209 | image, relationArray, |
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| 210 | NIL(mdd_t), NIL(mdd_t)); |
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| 211 | } else { |
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| 212 | if (partial) { |
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| 213 | refResult = ImgPreImageByHybridWithStaticSplit(info, info->vector, |
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| 214 | image, relationArray, |
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| 215 | NIL(mdd_t), NIL(mdd_t)); |
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| 216 | } else |
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| 217 | refResult = ImgPreImageByHybrid(info, info->vector, image); |
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| 218 | } |
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| 219 | assert(mdd_equal_mod_care_set_array(refResult, preImg, |
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| 220 | info->toCareSetArray)); |
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| 221 | mdd_free(refResult); |
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| 222 | } |
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| 223 | |
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| 224 | if (relationArray) |
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| 225 | mdd_array_free(relationArray); |
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| 226 | |
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| 227 | if (info->preCache && info->option->autoFlushCache == 1) |
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| 228 | ImgFlushCache(info->preCache); |
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| 229 | if (info->preKeepPiInTr == TRUE) { |
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| 230 | if (info->functionData->quantifyCube) |
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| 231 | pre = bdd_smooth_with_cube(preImg, info->functionData->quantifyCube); |
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| 232 | else |
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| 233 | pre = bdd_smooth(preImg, info->functionData->quantifyBddVars); |
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| 234 | mdd_free(preImg); |
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| 235 | } else |
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| 236 | pre = preImg; |
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| 237 | if (info->option->verbosity) { |
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| 238 | fprintf(vis_stdout, |
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| 239 | "** tfm info: max BDD size for intermediate product = %d\n", |
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| 240 | info->maxIntermediateSize); |
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| 241 | } |
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| 242 | return(pre); |
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| 243 | } |
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| 244 | |
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| 245 | |
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| 246 | /*---------------------------------------------------------------------------*/ |
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| 247 | /* Definition of static functions */ |
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| 248 | /*---------------------------------------------------------------------------*/ |
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| 249 | |
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| 250 | |
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| 251 | /**Function******************************************************************** |
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| 252 | |
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| 253 | Synopsis [Computes preimage with domain cofactoring method.] |
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| 254 | |
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| 255 | Description [Computes preimage with domain cofactoring method.] |
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| 256 | |
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| 257 | SideEffects [] |
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| 258 | |
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| 259 | ******************************************************************************/ |
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| 260 | static bdd_t * |
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| 261 | PreImageByDomainCofactoring(ImgTfmInfo_t *info, array_t *delta, bdd_t *image, |
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| 262 | array_t *relationArray, |
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| 263 | mdd_t *cofactorCube, mdd_t *abstractCube, |
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| 264 | int splitMethod, int turnDepth, int depth) |
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| 265 | { |
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| 266 | array_t *newDelta, *tmpDelta, *vectorT, *vectorE; |
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| 267 | bdd_t *preImg, *preImgT, *preImgE, *imgT, *imgE, *newImg, *tmpImg; |
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| 268 | int split; |
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| 269 | bdd_t *var, *varNot, *refResult; |
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| 270 | int nRecur; |
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| 271 | array_t *relationArrayT, *relationArrayE; |
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| 272 | array_t *newRelationArray, *tmpRelationArray; |
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| 273 | mdd_t *cofactorCubeT, *cofactorCubeE; |
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| 274 | mdd_t *abstractCubeT, *abstractCubeE; |
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| 275 | mdd_t *newCofactorCube, *newAbstractCube; |
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| 276 | mdd_t *cofactor, *abstract; |
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| 277 | mdd_t *essentialCube, *tmp; |
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| 278 | int findEssential; |
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| 279 | int foundEssentialDepth, foundEssentialDepthT, foundEssentialDepthE; |
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| 280 | int turnFlag, size; |
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| 281 | mdd_t *saveCareSet = NIL(mdd_t); |
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| 282 | |
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| 283 | newRelationArray = NIL(array_t); |
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| 284 | |
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| 285 | if (info->option->checkEquivalence && relationArray) { |
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| 286 | assert(ImgCheckEquivalence(info, delta, relationArray, |
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| 287 | cofactorCube, abstractCube, 1)); |
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| 288 | } |
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| 289 | |
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| 290 | info->nRecursionB++; |
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| 291 | if (info->option->debug) { |
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| 292 | if (relationArray) { |
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| 293 | refResult = ImgPreImageByHybrid(info, delta, image); |
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| 294 | preImg = ImgPreImageByHybridWithStaticSplit(info, NIL(array_t), image, |
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| 295 | relationArray, |
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| 296 | cofactorCube, abstractCube); |
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| 297 | tmp = refResult; |
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| 298 | refResult = mdd_and(tmp, info->debugCareSet, 1, 1); |
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| 299 | mdd_free(tmp); |
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| 300 | tmp = preImg; |
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| 301 | preImg = mdd_and(tmp, info->debugCareSet, 1, 1); |
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| 302 | mdd_free(tmp); |
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| 303 | assert(mdd_equal_mod_care_set_array(refResult, preImg, |
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| 304 | info->toCareSetArray)); |
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| 305 | mdd_free(refResult); |
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| 306 | mdd_free(preImg); |
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| 307 | } |
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| 308 | } |
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| 309 | |
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| 310 | if (info->nIntermediateVars) |
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| 311 | size = ImgVectorFunctionSize(delta); |
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| 312 | else |
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| 313 | size = array_n(delta); |
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| 314 | if (size == 1) { |
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| 315 | preImg = PreImageBySubstitution(info, delta, image); |
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| 316 | info->averageDepthB = (info->averageDepthB * (float)info->nLeavesB + |
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| 317 | (float)depth) / (float)(info->nLeavesB + 1); |
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| 318 | if (depth > info->maxDepthB) |
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| 319 | info->maxDepthB = depth; |
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| 320 | info->nLeavesB++; |
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| 321 | info->foundEssentialDepth = info->option->maxEssentialDepth; |
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| 322 | return(preImg); |
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| 323 | } |
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| 324 | |
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| 325 | if (info->option->findEssential) { |
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| 326 | if (info->option->findEssential == 1) |
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| 327 | findEssential = 1; |
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| 328 | else { |
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| 329 | if (depth >= info->lastFoundEssentialDepth) |
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| 330 | findEssential = 1; |
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| 331 | else |
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| 332 | findEssential = 0; |
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| 333 | } |
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| 334 | } else |
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| 335 | findEssential = 0; |
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| 336 | if (findEssential) { |
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| 337 | essentialCube = bdd_find_essential_cube(image); |
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| 338 | |
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| 339 | if (!bdd_is_tautology(essentialCube, 1)) { |
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| 340 | info->averageFoundEssential = (info->averageFoundEssential * |
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| 341 | (float)info->nFoundEssentials + (float)(bdd_size(essentialCube) - 1)) / |
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| 342 | (float)(info->nFoundEssentials + 1); |
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| 343 | info->averageFoundEssentialDepth = (info->averageFoundEssentialDepth * |
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| 344 | (float)info->nFoundEssentials + (float)depth) / |
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| 345 | (float)(info->nFoundEssentials + 1); |
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| 346 | if (info->nFoundEssentials == 0 || depth < info->topFoundEssentialDepth) |
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| 347 | info->topFoundEssentialDepth = depth; |
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| 348 | if (info->option->printEssential && depth < IMG_TF_MAX_PRINT_DEPTH) |
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| 349 | info->foundEssentials[depth]++; |
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| 350 | info->nFoundEssentials++; |
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| 351 | if (info->option->delayedSplit && relationArray) { |
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| 352 | tmpRelationArray = relationArray; |
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| 353 | tmpImg = ImgVectorMinimize(info, delta, essentialCube, image, |
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| 354 | tmpRelationArray, &tmpDelta, NIL(mdd_t *), |
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| 355 | NIL(array_t *), &cofactor, &abstract); |
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| 356 | if (bdd_is_tautology(cofactor, 1)) |
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| 357 | newCofactorCube = cofactorCube; |
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| 358 | else |
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| 359 | newCofactorCube = mdd_and(cofactorCube, cofactor, 1, 1); |
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| 360 | mdd_free(cofactor); |
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| 361 | if (bdd_is_tautology(abstract, 1)) |
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| 362 | newAbstractCube = abstractCube; |
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| 363 | else |
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| 364 | newAbstractCube = mdd_and(abstractCube, abstract, 1, 1); |
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| 365 | mdd_free(abstract); |
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| 366 | } else { |
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| 367 | if (relationArray) |
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| 368 | tmpRelationArray = mdd_array_duplicate(relationArray); |
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| 369 | else |
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| 370 | tmpRelationArray = relationArray; |
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| 371 | tmpImg = ImgVectorMinimize(info, delta, essentialCube, image, |
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| 372 | tmpRelationArray, &tmpDelta, NIL(mdd_t *), |
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| 373 | NIL(array_t *), NIL(mdd_t *), NIL(mdd_t *)); |
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| 374 | newCofactorCube = cofactorCube; |
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| 375 | newAbstractCube = abstractCube; |
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| 376 | } |
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| 377 | foundEssentialDepth = depth; |
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| 378 | } else { |
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| 379 | tmpDelta = delta; |
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| 380 | tmpRelationArray = relationArray; |
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| 381 | tmpImg = image; |
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| 382 | newCofactorCube = cofactorCube; |
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| 383 | newAbstractCube = abstractCube; |
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| 384 | foundEssentialDepth = info->option->maxEssentialDepth; |
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| 385 | } |
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| 386 | mdd_free(essentialCube); |
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| 387 | foundEssentialDepthT = info->option->maxEssentialDepth; |
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| 388 | foundEssentialDepthE = info->option->maxEssentialDepth; |
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| 389 | } else { |
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| 390 | tmpDelta = delta; |
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| 391 | tmpRelationArray = relationArray; |
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| 392 | tmpImg = image; |
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| 393 | newCofactorCube = cofactorCube; |
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| 394 | newAbstractCube = abstractCube; |
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| 395 | /* To remove compiler warnings */ |
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| 396 | foundEssentialDepth = -1; |
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| 397 | foundEssentialDepthT = -1; |
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| 398 | foundEssentialDepthE = -1; |
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| 399 | } |
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| 400 | |
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| 401 | if (!info->option->preCanonical) { |
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| 402 | newImg = tmpImg; |
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| 403 | newDelta = tmpDelta; |
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| 404 | newRelationArray = tmpRelationArray; |
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| 405 | } else if (info->option->delayedSplit && relationArray) { |
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| 406 | newImg = PreImageMakeVectorCanonical(info, tmpDelta, tmpImg, |
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| 407 | tmpRelationArray, &newDelta, |
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| 408 | &newRelationArray, |
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| 409 | &cofactor, &abstract); |
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| 410 | if (!bdd_is_tautology(cofactor, 1)) { |
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| 411 | if (newCofactorCube == cofactorCube) |
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| 412 | newCofactorCube = mdd_and(cofactorCube, cofactor, 1, 1); |
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| 413 | else { |
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| 414 | tmp = newCofactorCube; |
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| 415 | newCofactorCube = mdd_and(tmp, cofactor, 1, 1); |
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| 416 | mdd_free(tmp); |
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| 417 | } |
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| 418 | } |
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| 419 | mdd_free(cofactor); |
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| 420 | if (!bdd_is_tautology(abstract, 1)) { |
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| 421 | if (newAbstractCube == abstractCube) |
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| 422 | newAbstractCube = mdd_and(abstractCube, abstract, 1, 1); |
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| 423 | else { |
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| 424 | tmp = newAbstractCube; |
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| 425 | newAbstractCube = mdd_and(tmp, abstract, 1, 1); |
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| 426 | mdd_free(tmp); |
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| 427 | } |
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| 428 | } |
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| 429 | mdd_free(abstract); |
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| 430 | } else { |
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| 431 | newImg = PreImageMakeVectorCanonical(info, tmpDelta, tmpImg, |
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| 432 | tmpRelationArray, &newDelta, |
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| 433 | &newRelationArray, |
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| 434 | NIL(mdd_t *), NIL(mdd_t *)); |
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| 435 | } |
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| 436 | if (tmpDelta != delta) |
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| 437 | ImgVectorFree(tmpDelta); |
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| 438 | if (tmpImg != image) |
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| 439 | mdd_free(tmpImg); |
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| 440 | if (tmpRelationArray && tmpRelationArray != relationArray && |
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| 441 | tmpRelationArray != newRelationArray) { |
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| 442 | mdd_array_free(tmpRelationArray); |
---|
| 443 | } |
---|
| 444 | |
---|
| 445 | if (info->option->debug) { |
---|
| 446 | if (relationArray) { |
---|
| 447 | refResult = ImgPreImageByHybrid(info, newDelta, newImg); |
---|
| 448 | preImg = ImgPreImageByHybridWithStaticSplit(info, NIL(array_t), newImg, |
---|
| 449 | newRelationArray, |
---|
| 450 | newCofactorCube, |
---|
| 451 | newAbstractCube); |
---|
| 452 | tmp = refResult; |
---|
| 453 | refResult = mdd_and(tmp, info->debugCareSet, 1, 1); |
---|
| 454 | mdd_free(tmp); |
---|
| 455 | tmp = preImg; |
---|
| 456 | preImg = mdd_and(tmp, info->debugCareSet, 1, 1); |
---|
| 457 | mdd_free(tmp); |
---|
| 458 | assert(mdd_equal_mod_care_set_array(refResult, preImg, |
---|
| 459 | info->toCareSetArray)); |
---|
| 460 | mdd_free(refResult); |
---|
| 461 | mdd_free(preImg); |
---|
| 462 | } |
---|
| 463 | } |
---|
| 464 | |
---|
| 465 | if (bdd_is_tautology(newImg, 1) || bdd_is_tautology(newImg, 0)) { |
---|
| 466 | info->averageDepthB = (info->averageDepthB * (float)info->nLeavesB + |
---|
| 467 | (float)depth) / (float)(info->nLeavesB + 1); |
---|
| 468 | if (depth > info->maxDepthB) |
---|
| 469 | info->maxDepthB = depth; |
---|
| 470 | info->nLeavesB++; |
---|
| 471 | if (info->option->debug) { |
---|
| 472 | refResult = ImgPreImageByHybrid(info, newDelta, newImg); |
---|
| 473 | tmp = refResult; |
---|
| 474 | refResult = mdd_and(tmp, info->debugCareSet, 1, 1); |
---|
| 475 | mdd_free(tmp); |
---|
| 476 | tmp = mdd_and(newImg, info->debugCareSet, 1, 1); |
---|
| 477 | assert(mdd_equal_mod_care_set_array(refResult, tmp, |
---|
| 478 | info->toCareSetArray)); |
---|
| 479 | mdd_free(refResult); |
---|
| 480 | mdd_free(tmp); |
---|
| 481 | } |
---|
| 482 | if (newDelta != delta) |
---|
| 483 | ImgVectorFree(newDelta); |
---|
| 484 | if (relationArray && newRelationArray != relationArray) |
---|
| 485 | mdd_array_free(newRelationArray); |
---|
| 486 | if (newCofactorCube && newCofactorCube != cofactorCube) |
---|
| 487 | mdd_free(newCofactorCube); |
---|
| 488 | if (newAbstractCube && newAbstractCube != abstractCube) |
---|
| 489 | mdd_free(newAbstractCube); |
---|
| 490 | if (findEssential) |
---|
| 491 | info->foundEssentialDepth = foundEssentialDepth; |
---|
| 492 | return(newImg); |
---|
| 493 | } |
---|
| 494 | if (array_n(newDelta) <= 1) { |
---|
| 495 | if (array_n(newDelta) == 0) |
---|
| 496 | preImg = newImg; |
---|
| 497 | else { |
---|
| 498 | assert(array_n(newDelta) == 1); |
---|
| 499 | preImg = PreImageBySubstitution(info, newDelta, newImg); |
---|
| 500 | mdd_free(newImg); |
---|
| 501 | } |
---|
| 502 | info->averageDepthB = (info->averageDepthB * (float)info->nLeavesB + |
---|
| 503 | (float)depth) / (float)(info->nLeavesB + 1); |
---|
| 504 | if (depth > info->maxDepthB) |
---|
| 505 | info->maxDepthB = depth; |
---|
| 506 | info->nLeavesB++; |
---|
| 507 | if (info->option->debug) { |
---|
| 508 | refResult = ImgPreImageByHybrid(info, delta, image); |
---|
| 509 | tmp = refResult; |
---|
| 510 | refResult = mdd_and(tmp, info->debugCareSet, 1, 1); |
---|
| 511 | mdd_free(tmp); |
---|
| 512 | tmp = mdd_and(preImg, info->debugCareSet, 1, 1); |
---|
| 513 | assert(mdd_equal_mod_care_set_array(refResult, tmp, |
---|
| 514 | info->toCareSetArray)); |
---|
| 515 | mdd_free(refResult); |
---|
| 516 | mdd_free(tmp); |
---|
| 517 | } |
---|
| 518 | if (newDelta != delta) |
---|
| 519 | ImgVectorFree(newDelta); |
---|
| 520 | if (relationArray && newRelationArray != relationArray) |
---|
| 521 | mdd_array_free(newRelationArray); |
---|
| 522 | if (newCofactorCube && newCofactorCube != cofactorCube) |
---|
| 523 | mdd_free(newCofactorCube); |
---|
| 524 | if (newAbstractCube && newAbstractCube != abstractCube) |
---|
| 525 | mdd_free(newAbstractCube); |
---|
| 526 | if (findEssential) |
---|
| 527 | info->foundEssentialDepth = foundEssentialDepth; |
---|
| 528 | return(preImg); |
---|
| 529 | } |
---|
| 530 | |
---|
| 531 | if (info->preCache) { |
---|
| 532 | preImg = ImgCacheLookupTable(info, info->preCache, newDelta, newImg); |
---|
| 533 | if (preImg) { |
---|
| 534 | info->averageDepthB = (info->averageDepthB * (float)info->nLeavesB + |
---|
| 535 | (float)depth) / (float)(info->nLeavesB + 1); |
---|
| 536 | if (depth > info->maxDepthB) |
---|
| 537 | info->maxDepthB = depth; |
---|
| 538 | info->nLeavesB++; |
---|
| 539 | if (info->option->debug) { |
---|
| 540 | refResult = ImgPreImageByHybrid(info, newDelta, newImg); |
---|
| 541 | tmp = refResult; |
---|
| 542 | refResult = mdd_and(tmp, info->debugCareSet, 1, 1); |
---|
| 543 | mdd_free(tmp); |
---|
| 544 | tmp = mdd_and(preImg, info->debugCareSet, 1, 1); |
---|
| 545 | assert(mdd_equal_mod_care_set_array(refResult, tmp, |
---|
| 546 | info->toCareSetArray)); |
---|
| 547 | mdd_free(refResult); |
---|
| 548 | mdd_free(tmp); |
---|
| 549 | } |
---|
| 550 | if (newDelta != delta) |
---|
| 551 | ImgVectorFree(newDelta); |
---|
| 552 | if (newImg != image) |
---|
| 553 | mdd_free(newImg); |
---|
| 554 | if (relationArray && newRelationArray != relationArray) |
---|
| 555 | mdd_array_free(newRelationArray); |
---|
| 556 | if (newCofactorCube && newCofactorCube != cofactorCube) |
---|
| 557 | mdd_free(newCofactorCube); |
---|
| 558 | if (newAbstractCube && newAbstractCube != abstractCube) |
---|
| 559 | mdd_free(newAbstractCube); |
---|
| 560 | if (findEssential) |
---|
| 561 | info->foundEssentialDepth = foundEssentialDepth; |
---|
| 562 | return(preImg); |
---|
| 563 | } |
---|
| 564 | } |
---|
| 565 | |
---|
| 566 | turnFlag = 0; |
---|
| 567 | if (splitMethod == 4 && turnDepth == -1) { |
---|
| 568 | if (depth < info->option->preSplitMinDepth) { |
---|
| 569 | info->nSplitsB++; |
---|
| 570 | turnFlag = 0; |
---|
| 571 | } else if (depth > info->option->preSplitMaxDepth) { |
---|
| 572 | info->nConjoinsB++; |
---|
| 573 | turnFlag = 1; |
---|
| 574 | } else { |
---|
| 575 | turnFlag = ImgDecideSplitOrConjoin(info, newDelta, newImg, 1, |
---|
| 576 | newRelationArray, newCofactorCube, |
---|
| 577 | newAbstractCube, 0, depth); |
---|
| 578 | } |
---|
| 579 | } else { |
---|
| 580 | if (depth == turnDepth) |
---|
| 581 | turnFlag = 1; |
---|
| 582 | else |
---|
| 583 | turnFlag = 0; |
---|
| 584 | } |
---|
| 585 | if (turnFlag) { |
---|
| 586 | if (splitMethod == 2) { |
---|
| 587 | preImg = PreImageByConstraintCofactoring(info, newDelta, newImg, |
---|
| 588 | info->option->preSplitMethod, |
---|
| 589 | 0, depth + 1); |
---|
| 590 | } else { |
---|
| 591 | if (relationArray) { |
---|
| 592 | preImg = ImgPreImageByHybridWithStaticSplit(info, NIL(array_t), newImg, |
---|
| 593 | newRelationArray, |
---|
| 594 | newCofactorCube, |
---|
| 595 | newAbstractCube); |
---|
| 596 | } else |
---|
| 597 | preImg = ImgPreImageByHybrid(info, newDelta, newImg); |
---|
| 598 | } |
---|
| 599 | if (info->option->debug) { |
---|
| 600 | refResult = ImgPreImageByHybrid(info, newDelta, newImg); |
---|
| 601 | tmp = refResult; |
---|
| 602 | refResult = mdd_and(tmp, info->debugCareSet, 1, 1); |
---|
| 603 | mdd_free(tmp); |
---|
| 604 | tmp = mdd_and(preImg, info->debugCareSet, 1, 1); |
---|
| 605 | assert(mdd_equal_mod_care_set_array(refResult, tmp, |
---|
| 606 | info->toCareSetArray)); |
---|
| 607 | mdd_free(refResult); |
---|
| 608 | mdd_free(tmp); |
---|
| 609 | } |
---|
| 610 | if (splitMethod == 4) { |
---|
| 611 | if (info->preCache) |
---|
| 612 | ImgCacheInsertTable(info->preCache, newDelta, newImg, mdd_dup(preImg)); |
---|
| 613 | else { |
---|
| 614 | if (newDelta != delta) |
---|
| 615 | ImgVectorFree(newDelta); |
---|
| 616 | if (newImg != image) |
---|
| 617 | mdd_free(newImg); |
---|
| 618 | } |
---|
| 619 | info->averageDepthB = (info->averageDepthB * (float)info->nLeavesB + |
---|
| 620 | (float)depth) / (float)(info->nLeavesB + 1); |
---|
| 621 | if (depth > info->maxDepthB) |
---|
| 622 | info->maxDepthB = depth; |
---|
| 623 | info->nLeavesB++; |
---|
| 624 | } else { |
---|
| 625 | if (newDelta != delta) |
---|
| 626 | ImgVectorFree(newDelta); |
---|
| 627 | if (newImg != image) |
---|
| 628 | mdd_free(newImg); |
---|
| 629 | } |
---|
| 630 | if (relationArray && newRelationArray != relationArray) |
---|
| 631 | mdd_array_free(newRelationArray); |
---|
| 632 | if (newCofactorCube && newCofactorCube != cofactorCube) |
---|
| 633 | mdd_free(newCofactorCube); |
---|
| 634 | if (newAbstractCube && newAbstractCube != abstractCube) |
---|
| 635 | mdd_free(newAbstractCube); |
---|
| 636 | info->nTurnsB++; |
---|
| 637 | if (findEssential) |
---|
| 638 | info->foundEssentialDepth = foundEssentialDepth; |
---|
| 639 | return(preImg); |
---|
| 640 | } |
---|
| 641 | |
---|
| 642 | split = PreImageChooseSplitVar(info, newDelta, newImg, |
---|
| 643 | 0, info->option->preInputSplit); |
---|
| 644 | |
---|
| 645 | /* No more present state variable to split */ |
---|
| 646 | if (split == -1) { |
---|
| 647 | if (info->option->preDcLeafMethod == 0 || |
---|
| 648 | info->option->preDcLeafMethod == 2) { |
---|
| 649 | if (info->option->preDcLeafMethod == 0) |
---|
| 650 | preImg = PreImageBySubstitution(info, newDelta, newImg); |
---|
| 651 | else if (relationArray) { |
---|
| 652 | preImg = ImgPreImageByHybridWithStaticSplit(info, NIL(array_t), newImg, |
---|
| 653 | newRelationArray, |
---|
| 654 | newCofactorCube, |
---|
| 655 | newAbstractCube); |
---|
| 656 | } else |
---|
| 657 | preImg = ImgPreImageByHybrid(info, newDelta, newImg); |
---|
| 658 | if (info->preCache) |
---|
| 659 | ImgCacheInsertTable(info->preCache, newDelta, newImg, mdd_dup(preImg)); |
---|
| 660 | info->averageDepthB = (info->averageDepthB * (float)info->nLeavesB + |
---|
| 661 | (float)depth) / (float)(info->nLeavesB + 1); |
---|
| 662 | if (depth > info->maxDepthB) |
---|
| 663 | info->maxDepthB = depth; |
---|
| 664 | info->nLeavesB++; |
---|
| 665 | } else { |
---|
| 666 | preImg = PreImageByConstraintCofactoring(info, newDelta, newImg, |
---|
| 667 | splitMethod, turnDepth, |
---|
| 668 | depth + 1); |
---|
| 669 | info->nRecursionB--; |
---|
| 670 | } |
---|
| 671 | if (splitMethod == 0) |
---|
| 672 | info->nTurnsB++; |
---|
| 673 | if (info->option->debug) { |
---|
| 674 | refResult = ImgPreImageByHybrid(info, newDelta, newImg); |
---|
| 675 | tmp = refResult; |
---|
| 676 | refResult = mdd_and(tmp, info->debugCareSet, 1, 1); |
---|
| 677 | mdd_free(tmp); |
---|
| 678 | tmp = mdd_and(preImg, info->debugCareSet, 1, 1); |
---|
| 679 | assert(mdd_equal_mod_care_set_array(refResult, tmp, |
---|
| 680 | info->toCareSetArray)); |
---|
| 681 | mdd_free(refResult); |
---|
| 682 | mdd_free(tmp); |
---|
| 683 | } |
---|
| 684 | if (info->option->preDcLeafMethod != 0 || !info->preCache) { |
---|
| 685 | if (newDelta != delta) |
---|
| 686 | ImgVectorFree(newDelta); |
---|
| 687 | if (newImg != image) |
---|
| 688 | mdd_free(newImg); |
---|
| 689 | } |
---|
| 690 | if (relationArray && newRelationArray != relationArray) |
---|
| 691 | mdd_array_free(newRelationArray); |
---|
| 692 | if (newCofactorCube && newCofactorCube != cofactorCube) |
---|
| 693 | mdd_free(newCofactorCube); |
---|
| 694 | if (newAbstractCube && newAbstractCube != abstractCube) |
---|
| 695 | mdd_free(newAbstractCube); |
---|
| 696 | if (findEssential) |
---|
| 697 | info->foundEssentialDepth = foundEssentialDepth; |
---|
| 698 | return(preImg); |
---|
| 699 | } |
---|
| 700 | |
---|
| 701 | var = bdd_var_with_index(info->manager, split); |
---|
| 702 | varNot = mdd_not(var); |
---|
| 703 | if (info->option->delayedSplit && relationArray) { |
---|
| 704 | imgT = DomainCofactoring(info, newDelta, newImg, newRelationArray, var, |
---|
| 705 | &vectorT, &relationArrayT, &cofactor, &abstract); |
---|
| 706 | if (bdd_is_tautology(cofactor, 1)) |
---|
| 707 | cofactorCubeT = newCofactorCube; |
---|
| 708 | else |
---|
| 709 | cofactorCubeT = mdd_and(newCofactorCube, cofactor, 1, 1); |
---|
| 710 | mdd_free(cofactor); |
---|
| 711 | if (bdd_is_tautology(abstract, 1)) |
---|
| 712 | abstractCubeT = newAbstractCube; |
---|
| 713 | else |
---|
| 714 | abstractCubeT = mdd_and(newAbstractCube, abstract, 1, 1); |
---|
| 715 | mdd_free(abstract); |
---|
| 716 | |
---|
| 717 | imgE = DomainCofactoring(info, newDelta, newImg, newRelationArray, varNot, |
---|
| 718 | &vectorE, &relationArrayE, &cofactor, &abstract); |
---|
| 719 | if (bdd_is_tautology(cofactor, 1)) |
---|
| 720 | cofactorCubeE = newCofactorCube; |
---|
| 721 | else |
---|
| 722 | cofactorCubeE = mdd_and(newCofactorCube, cofactor, 1, 1); |
---|
| 723 | mdd_free(cofactor); |
---|
| 724 | if (bdd_is_tautology(abstract, 1)) |
---|
| 725 | abstractCubeE = newAbstractCube; |
---|
| 726 | else |
---|
| 727 | abstractCubeE = mdd_and(newAbstractCube, abstract, 1, 1); |
---|
| 728 | mdd_free(abstract); |
---|
| 729 | } else { |
---|
| 730 | imgT = DomainCofactoring(info, newDelta, newImg, newRelationArray, var, |
---|
| 731 | &vectorT, &relationArrayT, |
---|
| 732 | NIL(mdd_t *), NIL(mdd_t *)); |
---|
| 733 | cofactorCubeT = NIL(mdd_t); |
---|
| 734 | abstractCubeT = NIL(mdd_t); |
---|
| 735 | |
---|
| 736 | imgE = DomainCofactoring(info, newDelta, newImg, newRelationArray, varNot, |
---|
| 737 | &vectorE, &relationArrayE, |
---|
| 738 | NIL(mdd_t *), NIL(mdd_t *)); |
---|
| 739 | cofactorCubeE = NIL(mdd_t); |
---|
| 740 | abstractCubeE = NIL(mdd_t); |
---|
| 741 | } |
---|
| 742 | if (relationArray && newRelationArray != relationArray) |
---|
| 743 | mdd_array_free(newRelationArray); |
---|
| 744 | mdd_free(varNot); |
---|
| 745 | |
---|
| 746 | if (!info->preCache && !info->option->debug) { |
---|
| 747 | if (newDelta != delta) |
---|
| 748 | ImgVectorFree(newDelta); |
---|
| 749 | if (newImg != image) |
---|
| 750 | mdd_free(newImg); |
---|
| 751 | } |
---|
| 752 | |
---|
| 753 | nRecur = 0; |
---|
| 754 | if (bdd_is_tautology(imgT, 1)) |
---|
| 755 | preImgT = mdd_one(info->manager); |
---|
| 756 | else if (bdd_is_tautology(imgT, 0)) |
---|
| 757 | preImgT = mdd_zero(info->manager); |
---|
| 758 | else { |
---|
| 759 | if (info->option->debug) { |
---|
| 760 | saveCareSet = info->debugCareSet; |
---|
| 761 | info->debugCareSet = mdd_and(saveCareSet, var, 1, 1); |
---|
| 762 | } |
---|
| 763 | preImgT = PreImageByDomainCofactoring(info, vectorT, imgT, relationArrayT, |
---|
| 764 | cofactorCubeT, abstractCubeT, |
---|
| 765 | splitMethod, turnDepth, |
---|
| 766 | depth + 1); |
---|
| 767 | if (info->option->debug) { |
---|
| 768 | mdd_free(info->debugCareSet); |
---|
| 769 | info->debugCareSet = saveCareSet; |
---|
| 770 | } |
---|
| 771 | if (findEssential) |
---|
| 772 | foundEssentialDepthT = info->foundEssentialDepth; |
---|
| 773 | nRecur++; |
---|
| 774 | } |
---|
| 775 | ImgVectorFree(vectorT); |
---|
| 776 | mdd_free(imgT); |
---|
| 777 | if (relationArrayT && relationArrayT != newRelationArray) |
---|
| 778 | mdd_array_free(relationArrayT); |
---|
| 779 | if (cofactorCubeT && cofactorCubeT != newCofactorCube) |
---|
| 780 | mdd_free(cofactorCubeT); |
---|
| 781 | if (abstractCubeT && abstractCubeT != newAbstractCube) |
---|
| 782 | mdd_free(abstractCubeT); |
---|
| 783 | |
---|
| 784 | if (bdd_is_tautology(imgE, 1)) |
---|
| 785 | preImgE = mdd_one(info->manager); |
---|
| 786 | else if (bdd_is_tautology(imgE, 0)) |
---|
| 787 | preImgE = mdd_zero(info->manager); |
---|
| 788 | else { |
---|
| 789 | if (info->option->debug) { |
---|
| 790 | saveCareSet = info->debugCareSet; |
---|
| 791 | info->debugCareSet = mdd_and(saveCareSet, var, 1, 0); |
---|
| 792 | } |
---|
| 793 | preImgE = PreImageByDomainCofactoring(info, vectorE, imgE, relationArrayE, |
---|
| 794 | cofactorCubeE, abstractCubeE, |
---|
| 795 | splitMethod, turnDepth, |
---|
| 796 | depth + 1); |
---|
| 797 | if (info->option->debug) { |
---|
| 798 | mdd_free(info->debugCareSet); |
---|
| 799 | info->debugCareSet = saveCareSet; |
---|
| 800 | } |
---|
| 801 | if (findEssential) |
---|
| 802 | foundEssentialDepthE = info->foundEssentialDepth; |
---|
| 803 | nRecur++; |
---|
| 804 | } |
---|
| 805 | ImgVectorFree(vectorE); |
---|
| 806 | mdd_free(imgE); |
---|
| 807 | if (relationArrayE && relationArrayT != newRelationArray) |
---|
| 808 | mdd_array_free(relationArrayE); |
---|
| 809 | if (cofactorCubeE && cofactorCubeE != newCofactorCube) |
---|
| 810 | mdd_free(cofactorCubeE); |
---|
| 811 | if (abstractCubeE && abstractCubeE != newAbstractCube) |
---|
| 812 | mdd_free(abstractCubeE); |
---|
| 813 | if (newCofactorCube && newCofactorCube != cofactorCube) |
---|
| 814 | mdd_free(newCofactorCube); |
---|
| 815 | if (newAbstractCube && newAbstractCube != abstractCube) |
---|
| 816 | mdd_free(newAbstractCube); |
---|
| 817 | |
---|
| 818 | preImg = bdd_ite(var, preImgT, preImgE, 1, 1, 1); |
---|
| 819 | if (info->option->verbosity) { |
---|
| 820 | size = bdd_size(preImg); |
---|
| 821 | if (size > info->maxIntermediateSize) |
---|
| 822 | info->maxIntermediateSize = size; |
---|
| 823 | if (info->option->printBddSize) { |
---|
| 824 | fprintf(vis_stdout, "** tfm info: bdd_ite(2,%d,%d) = %d\n", |
---|
| 825 | bdd_size(preImgT), bdd_size(preImgE), bdd_size(preImg)); |
---|
| 826 | } |
---|
| 827 | } |
---|
| 828 | mdd_free(var); |
---|
| 829 | mdd_free(preImgE); |
---|
| 830 | mdd_free(preImgT); |
---|
| 831 | |
---|
| 832 | if (info->preCache) |
---|
| 833 | ImgCacheInsertTable(info->preCache, newDelta, newImg, mdd_dup(preImg)); |
---|
| 834 | |
---|
| 835 | if (info->option->debug) { |
---|
| 836 | refResult = ImgPreImageByHybrid(info, newDelta, newImg); |
---|
| 837 | tmp = refResult; |
---|
| 838 | refResult = mdd_and(tmp, info->debugCareSet, 1, 1); |
---|
| 839 | mdd_free(tmp); |
---|
| 840 | tmp = mdd_and(preImg, info->debugCareSet, 1, 1); |
---|
| 841 | assert(mdd_equal_mod_care_set_array(refResult, tmp, |
---|
| 842 | info->toCareSetArray)); |
---|
| 843 | mdd_free(refResult); |
---|
| 844 | mdd_free(tmp); |
---|
| 845 | if (!info->preCache) { |
---|
| 846 | if (newDelta != delta) |
---|
| 847 | ImgVectorFree(newDelta); |
---|
| 848 | if (newImg != image) |
---|
| 849 | mdd_free(newImg); |
---|
| 850 | } |
---|
| 851 | } |
---|
| 852 | |
---|
| 853 | if (nRecur == 0) { |
---|
| 854 | info->averageDepthB = (info->averageDepthB * (float)info->nLeavesB + |
---|
| 855 | (float)depth) / (float)(info->nLeavesB + 1); |
---|
| 856 | if (depth > info->maxDepthB) |
---|
| 857 | info->maxDepthB = depth; |
---|
| 858 | info->nLeavesB++; |
---|
| 859 | } |
---|
| 860 | |
---|
| 861 | if (findEssential) { |
---|
| 862 | if (foundEssentialDepth == info->option->maxEssentialDepth) { |
---|
| 863 | if (foundEssentialDepthT < foundEssentialDepthE) |
---|
| 864 | foundEssentialDepth = foundEssentialDepthT; |
---|
| 865 | else |
---|
| 866 | foundEssentialDepth = foundEssentialDepthE; |
---|
| 867 | } |
---|
| 868 | info->foundEssentialDepth = foundEssentialDepth; |
---|
| 869 | } |
---|
| 870 | return(preImg); |
---|
| 871 | } |
---|
| 872 | |
---|
| 873 | |
---|
| 874 | /**Function******************************************************************** |
---|
| 875 | |
---|
| 876 | Synopsis [Computes a preimage by static input splitting.] |
---|
| 877 | |
---|
| 878 | Description [Computes a preimage by static input splitting.] |
---|
| 879 | |
---|
| 880 | SideEffects [] |
---|
| 881 | |
---|
| 882 | ******************************************************************************/ |
---|
| 883 | static mdd_t * |
---|
| 884 | PreImageByStaticDomainCofactoring(ImgTfmInfo_t *info, array_t *vector, |
---|
| 885 | mdd_t *from, array_t *relationArray, |
---|
| 886 | int turnDepth, int depth) |
---|
| 887 | { |
---|
| 888 | array_t *vectorT, *vectorE, *newVector; |
---|
| 889 | mdd_t *resT, *resE, *res, *cubeT, *cubeE; |
---|
| 890 | mdd_t *fromT, *fromE, *newFrom, *tmpFrom; |
---|
| 891 | mdd_t *var, *varNot; |
---|
| 892 | array_t *relationArrayT, *relationArrayE; |
---|
| 893 | array_t *newRelationArray, *tmpRelationArray; |
---|
| 894 | int nRecur; |
---|
| 895 | mdd_t *essentialCube, *refResult; |
---|
| 896 | int findEssential; |
---|
| 897 | int foundEssentialDepth, foundEssentialDepthT, foundEssentialDepthE; |
---|
| 898 | int turnFlag, size; |
---|
| 899 | mdd_t *saveCareSet = NIL(mdd_t), *tmp; |
---|
| 900 | |
---|
| 901 | info->nRecursionB++; |
---|
| 902 | |
---|
| 903 | turnFlag = 0; |
---|
| 904 | if (turnDepth == -1) { |
---|
| 905 | if (depth < info->option->preSplitMinDepth) { |
---|
| 906 | info->nSplitsB++; |
---|
| 907 | turnFlag = 0; |
---|
| 908 | } else if (depth > info->option->preSplitMaxDepth) { |
---|
| 909 | info->nConjoinsB++; |
---|
| 910 | turnFlag = 1; |
---|
| 911 | } else { |
---|
| 912 | turnFlag = ImgDecideSplitOrConjoin(info, vector, from, 1, |
---|
| 913 | relationArray, NIL(mdd_t), |
---|
| 914 | NIL(mdd_t), 1, depth); |
---|
| 915 | } |
---|
| 916 | } else { |
---|
| 917 | if (depth == turnDepth) |
---|
| 918 | turnFlag = 1; |
---|
| 919 | else |
---|
| 920 | turnFlag = 0; |
---|
| 921 | } |
---|
| 922 | if (turnFlag) { |
---|
| 923 | res = ImgPreImageByHybridWithStaticSplit(info, vector, from, relationArray, |
---|
| 924 | NIL(mdd_t), NIL(mdd_t)); |
---|
| 925 | info->averageDepthB = (info->averageDepthB * (float)info->nLeavesB + |
---|
| 926 | (float)depth) / (float)(info->nLeavesB + 1); |
---|
| 927 | if (depth > info->maxDepthB) |
---|
| 928 | info->maxDepthB = depth; |
---|
| 929 | info->nLeavesB++; |
---|
| 930 | info->foundEssentialDepth = info->option->maxEssentialDepth; |
---|
| 931 | return(res); |
---|
| 932 | } |
---|
| 933 | |
---|
| 934 | if (info->option->findEssential) { |
---|
| 935 | if (info->option->findEssential == 1) |
---|
| 936 | findEssential = 1; |
---|
| 937 | else { |
---|
| 938 | if (depth >= info->lastFoundEssentialDepth) |
---|
| 939 | findEssential = 1; |
---|
| 940 | else |
---|
| 941 | findEssential = 0; |
---|
| 942 | } |
---|
| 943 | } else |
---|
| 944 | findEssential = 0; |
---|
| 945 | if (findEssential) { |
---|
| 946 | essentialCube = bdd_find_essential_cube(from); |
---|
| 947 | |
---|
| 948 | if (!bdd_is_tautology(essentialCube, 1)) { |
---|
| 949 | info->averageFoundEssential = (info->averageFoundEssential * |
---|
| 950 | (float)info->nFoundEssentials + (float)(bdd_size(essentialCube) - 1)) / |
---|
| 951 | (float)(info->nFoundEssentials + 1); |
---|
| 952 | info->averageFoundEssentialDepth = (info->averageFoundEssentialDepth * |
---|
| 953 | (float)info->nFoundEssentials + (float)depth) / |
---|
| 954 | (float)(info->nFoundEssentials + 1); |
---|
| 955 | if (info->nFoundEssentials == 0 || depth < info->topFoundEssentialDepth) |
---|
| 956 | info->topFoundEssentialDepth = depth; |
---|
| 957 | if (info->option->printEssential && depth < IMG_TF_MAX_PRINT_DEPTH) |
---|
| 958 | info->foundEssentials[depth]++; |
---|
| 959 | info->nFoundEssentials++; |
---|
| 960 | if (vector) { |
---|
| 961 | array_t *tmpVector; |
---|
| 962 | if (info->option->preCanonical) { |
---|
| 963 | tmpFrom = PreImageMakeRelationCanonical(info, vector, from, |
---|
| 964 | relationArray, &newVector, |
---|
| 965 | &newRelationArray); |
---|
| 966 | } else { |
---|
| 967 | tmpFrom = from; |
---|
| 968 | newVector = vector; |
---|
| 969 | newRelationArray = relationArray; |
---|
| 970 | } |
---|
| 971 | tmpVector = newVector; |
---|
| 972 | newFrom = ImgVectorMinimize(info, tmpVector, essentialCube, tmpFrom, |
---|
| 973 | newRelationArray, &newVector, NIL(mdd_t *), |
---|
| 974 | NIL(array_t *), NIL(mdd_t *), NIL(mdd_t *)); |
---|
| 975 | if (tmpVector != vector) |
---|
| 976 | ImgVectorFree(tmpVector); |
---|
| 977 | if (tmpFrom != from) |
---|
| 978 | mdd_free(tmpFrom); |
---|
| 979 | } else { |
---|
| 980 | tmpRelationArray = ImgGetCofactoredRelationArray(relationArray, |
---|
| 981 | essentialCube); |
---|
| 982 | if (info->option->preCanonical) { |
---|
| 983 | newFrom = PreImageMakeRelationCanonical(info, vector, from, |
---|
| 984 | tmpRelationArray, &newVector, |
---|
| 985 | &newRelationArray); |
---|
| 986 | mdd_array_free(tmpRelationArray); |
---|
| 987 | } else { |
---|
| 988 | newFrom = from; |
---|
| 989 | newVector = vector; |
---|
| 990 | newRelationArray = tmpRelationArray; |
---|
| 991 | } |
---|
| 992 | } |
---|
| 993 | foundEssentialDepth = depth; |
---|
| 994 | } else { |
---|
| 995 | if (info->option->preCanonical) { |
---|
| 996 | newFrom = PreImageMakeRelationCanonical(info, vector, from, |
---|
| 997 | relationArray, |
---|
| 998 | &newVector, &newRelationArray); |
---|
| 999 | } else { |
---|
| 1000 | newFrom = from; |
---|
| 1001 | newVector = vector; |
---|
| 1002 | newRelationArray = relationArray; |
---|
| 1003 | } |
---|
| 1004 | foundEssentialDepth = info->option->maxEssentialDepth; |
---|
| 1005 | } |
---|
| 1006 | mdd_free(essentialCube); |
---|
| 1007 | foundEssentialDepthT = info->option->maxEssentialDepth; |
---|
| 1008 | foundEssentialDepthE = info->option->maxEssentialDepth; |
---|
| 1009 | } else { |
---|
| 1010 | if (info->option->preCanonical) { |
---|
| 1011 | newFrom = PreImageMakeRelationCanonical(info, vector, from, relationArray, |
---|
| 1012 | &newVector, &newRelationArray); |
---|
| 1013 | } else { |
---|
| 1014 | newFrom = from; |
---|
| 1015 | newVector = vector; |
---|
| 1016 | newRelationArray = relationArray; |
---|
| 1017 | } |
---|
| 1018 | /* To remove compiler warnings */ |
---|
| 1019 | foundEssentialDepth = -1; |
---|
| 1020 | foundEssentialDepthT = -1; |
---|
| 1021 | foundEssentialDepthE = -1; |
---|
| 1022 | } |
---|
| 1023 | |
---|
| 1024 | if (info->option->debug) { |
---|
| 1025 | refResult = ImgPreImageByHybridWithStaticSplit(info, vector, from, |
---|
| 1026 | relationArray, |
---|
| 1027 | NIL(mdd_t), NIL(mdd_t)); |
---|
| 1028 | res = ImgPreImageByHybridWithStaticSplit(info, newVector, newFrom, |
---|
| 1029 | newRelationArray, |
---|
| 1030 | NIL(mdd_t), NIL(mdd_t)); |
---|
| 1031 | tmp = refResult; |
---|
| 1032 | refResult = mdd_and(tmp, info->debugCareSet, 1, 1); |
---|
| 1033 | mdd_free(tmp); |
---|
| 1034 | tmp = res; |
---|
| 1035 | res = mdd_and(tmp, info->debugCareSet, 1, 1); |
---|
| 1036 | mdd_free(tmp); |
---|
| 1037 | assert(mdd_equal_mod_care_set_array(refResult, res, info->toCareSetArray)); |
---|
| 1038 | mdd_free(refResult); |
---|
| 1039 | mdd_free(res); |
---|
| 1040 | } |
---|
| 1041 | |
---|
| 1042 | if (bdd_is_tautology(newFrom, 1)) { |
---|
| 1043 | if (newVector && newVector != vector) |
---|
| 1044 | ImgVectorFree(newVector); |
---|
| 1045 | if (newRelationArray != relationArray) |
---|
| 1046 | mdd_array_free(newRelationArray); |
---|
| 1047 | if (newFrom != from) |
---|
| 1048 | mdd_free(newFrom); |
---|
| 1049 | info->averageDepthB = (info->averageDepthB * (float)info->nLeavesB + |
---|
| 1050 | (float)depth) / (float)(info->nLeavesB + 1); |
---|
| 1051 | if (depth > info->maxDepthB) |
---|
| 1052 | info->maxDepthB = depth; |
---|
| 1053 | info->nLeavesB++; |
---|
| 1054 | if (findEssential) |
---|
| 1055 | info->foundEssentialDepth = foundEssentialDepth; |
---|
| 1056 | return(mdd_one(info->manager)); |
---|
| 1057 | } |
---|
| 1058 | |
---|
| 1059 | if (depth == turnDepth || |
---|
| 1060 | (info->option->splitCubeFunc && bdd_is_cube(newFrom))) { |
---|
| 1061 | res = ImgPreImageByHybridWithStaticSplit(info, newVector, newFrom, |
---|
| 1062 | newRelationArray, |
---|
| 1063 | NIL(mdd_t), NIL(mdd_t)); |
---|
| 1064 | if (newVector && newVector != vector) |
---|
| 1065 | ImgVectorFree(newVector); |
---|
| 1066 | if (newRelationArray != relationArray) |
---|
| 1067 | mdd_array_free(newRelationArray); |
---|
| 1068 | if (newFrom != from) |
---|
| 1069 | mdd_free(newFrom); |
---|
| 1070 | info->averageDepthB = (info->averageDepthB * (float)info->nLeavesB + |
---|
| 1071 | (float)depth) / (float)(info->nLeavesB + 1); |
---|
| 1072 | if (depth > info->maxDepthB) |
---|
| 1073 | info->maxDepthB = depth; |
---|
| 1074 | info->nLeavesB++; |
---|
| 1075 | if (findEssential) |
---|
| 1076 | info->foundEssentialDepth = foundEssentialDepth; |
---|
| 1077 | return(res); |
---|
| 1078 | } |
---|
| 1079 | |
---|
| 1080 | var = ImgChooseTrSplitVar(info, newVector, newRelationArray, |
---|
| 1081 | info->option->trSplitMethod, 0); |
---|
| 1082 | if (!var) { |
---|
| 1083 | res = ImgPreImageByHybridWithStaticSplit(info, newVector, newFrom, |
---|
| 1084 | newRelationArray, |
---|
| 1085 | NIL(mdd_t), NIL(mdd_t)); |
---|
| 1086 | if (newVector && newVector != vector) |
---|
| 1087 | ImgVectorFree(newVector); |
---|
| 1088 | if (newRelationArray != relationArray) |
---|
| 1089 | mdd_array_free(newRelationArray); |
---|
| 1090 | if (newFrom != from) |
---|
| 1091 | mdd_free(newFrom); |
---|
| 1092 | info->averageDepthB = (info->averageDepthB * (float)info->nLeavesB + |
---|
| 1093 | (float)depth) / (float)(info->nLeavesB + 1); |
---|
| 1094 | if (depth > info->maxDepthB) |
---|
| 1095 | info->maxDepthB = depth; |
---|
| 1096 | info->nLeavesB++; |
---|
| 1097 | if (findEssential) |
---|
| 1098 | info->foundEssentialDepth = foundEssentialDepth; |
---|
| 1099 | return(res); |
---|
| 1100 | } |
---|
| 1101 | |
---|
| 1102 | varNot = mdd_not(var); |
---|
| 1103 | |
---|
| 1104 | nRecur = 0; |
---|
| 1105 | if (newVector) { |
---|
| 1106 | ImgVectorConstrain(info, newVector, var, NIL(array_t), |
---|
| 1107 | &vectorT, &cubeT, NIL(array_t *), |
---|
| 1108 | NIL(mdd_t *), NIL(mdd_t *), TRUE); |
---|
| 1109 | fromT = bdd_cofactor(newFrom, cubeT); |
---|
| 1110 | mdd_free(cubeT); |
---|
| 1111 | } else { |
---|
| 1112 | vectorT = NIL(array_t); |
---|
| 1113 | fromT = mdd_dup(newFrom); |
---|
| 1114 | } |
---|
| 1115 | relationArrayT = ImgGetCofactoredRelationArray(newRelationArray, var); |
---|
| 1116 | if (bdd_is_tautology(fromT, 1)) { |
---|
| 1117 | resT = mdd_one(info->manager); |
---|
| 1118 | if (vectorT) |
---|
| 1119 | ImgVectorFree(vectorT); |
---|
| 1120 | } else if (bdd_is_tautology(fromT, 0)) { |
---|
| 1121 | resT = mdd_zero(info->manager); |
---|
| 1122 | if (vectorT) |
---|
| 1123 | ImgVectorFree(vectorT); |
---|
| 1124 | } else { |
---|
| 1125 | if (info->option->debug) { |
---|
| 1126 | saveCareSet = info->debugCareSet; |
---|
| 1127 | info->debugCareSet = mdd_and(saveCareSet, var, 1, 1); |
---|
| 1128 | } |
---|
| 1129 | resT = PreImageByStaticDomainCofactoring(info, vectorT, fromT, |
---|
| 1130 | relationArrayT, turnDepth, depth + 1); |
---|
| 1131 | if (info->option->debug) { |
---|
| 1132 | mdd_free(info->debugCareSet); |
---|
| 1133 | info->debugCareSet = saveCareSet; |
---|
| 1134 | } |
---|
| 1135 | if (findEssential) |
---|
| 1136 | foundEssentialDepthE = info->foundEssentialDepth; |
---|
| 1137 | if (vectorT) |
---|
| 1138 | ImgVectorFree(vectorT); |
---|
| 1139 | nRecur++; |
---|
| 1140 | } |
---|
| 1141 | mdd_free(fromT); |
---|
| 1142 | mdd_array_free(relationArrayT); |
---|
| 1143 | |
---|
| 1144 | if (newVector) { |
---|
| 1145 | ImgVectorConstrain(info, newVector, varNot, NIL(array_t), |
---|
| 1146 | &vectorE, &cubeE, NIL(array_t *), |
---|
| 1147 | NIL(mdd_t *), NIL(mdd_t *), TRUE); |
---|
| 1148 | if (newVector != vector) |
---|
| 1149 | ImgVectorFree(newVector); |
---|
| 1150 | fromE = bdd_cofactor(newFrom, cubeE); |
---|
| 1151 | mdd_free(cubeE); |
---|
| 1152 | } else { |
---|
| 1153 | vectorE = NIL(array_t); |
---|
| 1154 | fromE = mdd_dup(newFrom); |
---|
| 1155 | } |
---|
| 1156 | if (newFrom != from) |
---|
| 1157 | mdd_free(newFrom); |
---|
| 1158 | relationArrayE = ImgGetCofactoredRelationArray(newRelationArray, varNot); |
---|
| 1159 | if (newRelationArray != relationArray) |
---|
| 1160 | mdd_array_free(newRelationArray); |
---|
| 1161 | if (bdd_is_tautology(fromE, 1)) { |
---|
| 1162 | resE = mdd_one(info->manager); |
---|
| 1163 | if (vectorE) |
---|
| 1164 | ImgVectorFree(vectorE); |
---|
| 1165 | } else if (bdd_is_tautology(fromE, 0)) { |
---|
| 1166 | resE = mdd_zero(info->manager); |
---|
| 1167 | if (vectorE) |
---|
| 1168 | ImgVectorFree(vectorE); |
---|
| 1169 | } else { |
---|
| 1170 | if (info->option->debug) { |
---|
| 1171 | saveCareSet = info->debugCareSet; |
---|
| 1172 | info->debugCareSet = mdd_and(saveCareSet, var, 1, 0); |
---|
| 1173 | } |
---|
| 1174 | resE = PreImageByStaticDomainCofactoring(info, vectorE, fromE, |
---|
| 1175 | relationArrayE, turnDepth, depth + 1); |
---|
| 1176 | if (info->option->debug) { |
---|
| 1177 | mdd_free(info->debugCareSet); |
---|
| 1178 | info->debugCareSet = saveCareSet; |
---|
| 1179 | } |
---|
| 1180 | if (findEssential) |
---|
| 1181 | foundEssentialDepthE = info->foundEssentialDepth; |
---|
| 1182 | if (vectorE) |
---|
| 1183 | ImgVectorFree(vectorE); |
---|
| 1184 | nRecur++; |
---|
| 1185 | } |
---|
| 1186 | mdd_free(fromE); |
---|
| 1187 | mdd_array_free(relationArrayE); |
---|
| 1188 | |
---|
| 1189 | res = bdd_ite(var, resT, resE, 1, 1, 1); |
---|
| 1190 | if (info->option->verbosity) { |
---|
| 1191 | size = bdd_size(res); |
---|
| 1192 | if (size > info->maxIntermediateSize) |
---|
| 1193 | info->maxIntermediateSize = size; |
---|
| 1194 | if (info->option->printBddSize) { |
---|
| 1195 | fprintf(vis_stdout, "** tfm info: bdd_ite(2,%d,%d) = %d\n", |
---|
| 1196 | bdd_size(resT), bdd_size(resE), bdd_size(res)); |
---|
| 1197 | } |
---|
| 1198 | } |
---|
| 1199 | mdd_free(resT); |
---|
| 1200 | mdd_free(resE); |
---|
| 1201 | mdd_free(var); |
---|
| 1202 | mdd_free(varNot); |
---|
| 1203 | |
---|
| 1204 | if (info->option->debug) { |
---|
| 1205 | refResult = ImgPreImageByHybridWithStaticSplit(info, vector, from, |
---|
| 1206 | relationArray, |
---|
| 1207 | NIL(mdd_t), NIL(mdd_t)); |
---|
| 1208 | tmp = refResult; |
---|
| 1209 | refResult = mdd_and(tmp, info->debugCareSet, 1, 1); |
---|
| 1210 | mdd_free(tmp); |
---|
| 1211 | tmp = mdd_and(res, info->debugCareSet, 1, 1); |
---|
| 1212 | assert(mdd_equal_mod_care_set_array(refResult, tmp, info->toCareSetArray)); |
---|
| 1213 | mdd_free(refResult); |
---|
| 1214 | mdd_free(tmp); |
---|
| 1215 | } |
---|
| 1216 | |
---|
| 1217 | if (nRecur == 0) { |
---|
| 1218 | info->averageDepthB = (info->averageDepthB * (float)info->nLeavesB + |
---|
| 1219 | (float)depth) / (float)(info->nLeavesB + 1); |
---|
| 1220 | if (depth > info->maxDepthB) |
---|
| 1221 | info->maxDepthB = depth; |
---|
| 1222 | info->nLeavesB++; |
---|
| 1223 | } |
---|
| 1224 | |
---|
| 1225 | if (findEssential) { |
---|
| 1226 | if (foundEssentialDepth == info->option->maxEssentialDepth) { |
---|
| 1227 | if (foundEssentialDepthT < foundEssentialDepthE) |
---|
| 1228 | foundEssentialDepth = foundEssentialDepthT; |
---|
| 1229 | else |
---|
| 1230 | foundEssentialDepth = foundEssentialDepthE; |
---|
| 1231 | } |
---|
| 1232 | info->foundEssentialDepth = foundEssentialDepth; |
---|
| 1233 | } |
---|
| 1234 | return(res); |
---|
| 1235 | } |
---|
| 1236 | |
---|
| 1237 | |
---|
| 1238 | /**Function******************************************************************** |
---|
| 1239 | |
---|
| 1240 | Synopsis [Computes preimage with constraint cofactoring method.] |
---|
| 1241 | |
---|
| 1242 | Description [Computes preimage with constraint cofactoring method.] |
---|
| 1243 | |
---|
| 1244 | SideEffects [] |
---|
| 1245 | |
---|
| 1246 | ******************************************************************************/ |
---|
| 1247 | static bdd_t * |
---|
| 1248 | PreImageByConstraintCofactoring(ImgTfmInfo_t *info, array_t *delta, |
---|
| 1249 | bdd_t *image, int splitMethod, |
---|
| 1250 | int turnDepth, int depth) |
---|
| 1251 | { |
---|
| 1252 | array_t *newDelta, *tmpDelta, *vector; |
---|
| 1253 | bdd_t *preImg, *preImgT, *preImgE, *imgT, *imgE; |
---|
| 1254 | bdd_t *c, *newImg, *tmpImg; |
---|
| 1255 | int split; |
---|
| 1256 | bdd_t *var, *varNot, *refResult; |
---|
| 1257 | ImgComponent_t *comp; |
---|
| 1258 | int nRecur, size; |
---|
| 1259 | mdd_t *essentialCube; |
---|
| 1260 | int findEssential; |
---|
| 1261 | int foundEssentialDepth; |
---|
| 1262 | int foundEssentialDepthT, foundEssentialDepthE; |
---|
| 1263 | mdd_t *saveCareSet = NIL(mdd_t), *tmp; |
---|
| 1264 | |
---|
| 1265 | info->nRecursionB++; |
---|
| 1266 | |
---|
| 1267 | if (info->nIntermediateVars) |
---|
| 1268 | size = ImgVectorFunctionSize(delta); |
---|
| 1269 | else |
---|
| 1270 | size = array_n(delta); |
---|
| 1271 | if (size == 1) { |
---|
| 1272 | preImg = PreImageBySubstitution(info, delta, image); |
---|
| 1273 | info->averageDepthB = (info->averageDepthB * (float)info->nLeavesB + |
---|
| 1274 | (float)depth) / (float)(info->nLeavesB + 1); |
---|
| 1275 | if (depth > info->maxDepthB) |
---|
| 1276 | info->maxDepthB = depth; |
---|
| 1277 | info->nLeavesB++; |
---|
| 1278 | info->foundEssentialDepth = info->option->maxEssentialDepth; |
---|
| 1279 | return(preImg); |
---|
| 1280 | } |
---|
| 1281 | |
---|
| 1282 | if (info->option->findEssential) { |
---|
| 1283 | if (info->option->findEssential == 1) |
---|
| 1284 | findEssential = 1; |
---|
| 1285 | else { |
---|
| 1286 | if (depth >= info->lastFoundEssentialDepth) |
---|
| 1287 | findEssential = 1; |
---|
| 1288 | else |
---|
| 1289 | findEssential = 0; |
---|
| 1290 | } |
---|
| 1291 | } else |
---|
| 1292 | findEssential = 0; |
---|
| 1293 | if (findEssential) { |
---|
| 1294 | essentialCube = bdd_find_essential_cube(image); |
---|
| 1295 | |
---|
| 1296 | if (!bdd_is_tautology(essentialCube, 1)) { |
---|
| 1297 | info->averageFoundEssential = (info->averageFoundEssential * |
---|
| 1298 | (float)info->nFoundEssentials + (float)(bdd_size(essentialCube) - 1)) / |
---|
| 1299 | (float)(info->nFoundEssentials + 1); |
---|
| 1300 | info->averageFoundEssentialDepth = (info->averageFoundEssentialDepth * |
---|
| 1301 | (float)info->nFoundEssentials + (float)depth) / |
---|
| 1302 | (float)(info->nFoundEssentials + 1); |
---|
| 1303 | if (info->nFoundEssentials == 0 || depth < info->topFoundEssentialDepth) |
---|
| 1304 | info->topFoundEssentialDepth = depth; |
---|
| 1305 | if (info->option->printEssential && depth < IMG_TF_MAX_PRINT_DEPTH) |
---|
| 1306 | info->foundEssentials[depth]++; |
---|
| 1307 | info->nFoundEssentials++; |
---|
| 1308 | tmpImg = ImgVectorMinimize(info, delta, essentialCube, image, |
---|
| 1309 | NIL(array_t), &tmpDelta, NIL(mdd_t *), |
---|
| 1310 | NIL(array_t *), NIL(mdd_t *), NIL(mdd_t *)); |
---|
| 1311 | foundEssentialDepth = depth; |
---|
| 1312 | } else { |
---|
| 1313 | tmpDelta = delta; |
---|
| 1314 | tmpImg = image; |
---|
| 1315 | foundEssentialDepth = info->option->maxEssentialDepth; |
---|
| 1316 | } |
---|
| 1317 | mdd_free(essentialCube); |
---|
| 1318 | foundEssentialDepthT = info->option->maxEssentialDepth; |
---|
| 1319 | foundEssentialDepthE = info->option->maxEssentialDepth; |
---|
| 1320 | } else { |
---|
| 1321 | tmpDelta = delta; |
---|
| 1322 | tmpImg = image; |
---|
| 1323 | /* To remove compiler warnings */ |
---|
| 1324 | foundEssentialDepth = -1; |
---|
| 1325 | foundEssentialDepthT = -1; |
---|
| 1326 | foundEssentialDepthE = -1; |
---|
| 1327 | } |
---|
| 1328 | |
---|
| 1329 | if (info->option->preCanonical) { |
---|
| 1330 | newImg = PreImageMakeVectorCanonical(info, tmpDelta, tmpImg, NIL(array_t), |
---|
| 1331 | &newDelta, NIL(array_t *), NIL(mdd_t *), |
---|
| 1332 | NIL(mdd_t *)); |
---|
| 1333 | } else { |
---|
| 1334 | newImg = tmpImg; |
---|
| 1335 | newDelta = tmpDelta; |
---|
| 1336 | } |
---|
| 1337 | if (tmpDelta != delta) |
---|
| 1338 | ImgVectorFree(tmpDelta); |
---|
| 1339 | if (tmpImg != image) |
---|
| 1340 | mdd_free(tmpImg); |
---|
| 1341 | |
---|
| 1342 | if (bdd_is_tautology(newImg, 1) || bdd_is_tautology(newImg, 0)) { |
---|
| 1343 | info->averageDepthB = (info->averageDepthB * (float)info->nLeavesB + |
---|
| 1344 | (float)depth) / (float)(info->nLeavesB + 1); |
---|
| 1345 | if (depth > info->maxDepthB) |
---|
| 1346 | info->maxDepthB = depth; |
---|
| 1347 | info->nLeavesB++; |
---|
| 1348 | if (info->option->debug) { |
---|
| 1349 | refResult = ImgPreImageByHybrid(info, newDelta, newImg); |
---|
| 1350 | tmp = refResult; |
---|
| 1351 | refResult = mdd_and(tmp, info->debugCareSet, 1, 1); |
---|
| 1352 | mdd_free(tmp); |
---|
| 1353 | tmp = mdd_and(newImg, info->debugCareSet, 1, 1); |
---|
| 1354 | assert(mdd_equal_mod_care_set_array(refResult, tmp, |
---|
| 1355 | info->toCareSetArray)); |
---|
| 1356 | mdd_free(refResult); |
---|
| 1357 | mdd_free(tmp); |
---|
| 1358 | } |
---|
| 1359 | ImgVectorFree(newDelta); |
---|
| 1360 | if (findEssential) |
---|
| 1361 | info->foundEssentialDepth = foundEssentialDepth; |
---|
| 1362 | return(newImg); |
---|
| 1363 | } |
---|
| 1364 | |
---|
| 1365 | if (info->preCache) { |
---|
| 1366 | preImg = ImgCacheLookupTable(info, info->preCache, newDelta, newImg); |
---|
| 1367 | if (preImg) { |
---|
| 1368 | info->averageDepthB = (info->averageDepthB * (float)info->nLeavesB + |
---|
| 1369 | (float)depth) / (float)(info->nLeavesB + 1); |
---|
| 1370 | if (depth > info->maxDepthB) |
---|
| 1371 | info->maxDepthB = depth; |
---|
| 1372 | info->nLeavesB++; |
---|
| 1373 | if (info->option->debug) { |
---|
| 1374 | refResult = ImgPreImageByHybrid(info, newDelta, newImg); |
---|
| 1375 | tmp = refResult; |
---|
| 1376 | refResult = mdd_and(tmp, info->debugCareSet, 1, 1); |
---|
| 1377 | mdd_free(tmp); |
---|
| 1378 | tmp = mdd_and(preImg, info->debugCareSet, 1, 1); |
---|
| 1379 | assert(mdd_equal_mod_care_set_array(refResult, tmp, |
---|
| 1380 | info->toCareSetArray)); |
---|
| 1381 | mdd_free(refResult); |
---|
| 1382 | mdd_free(tmp); |
---|
| 1383 | } |
---|
| 1384 | ImgVectorFree(newDelta); |
---|
| 1385 | mdd_free(newImg); |
---|
| 1386 | if (findEssential) |
---|
| 1387 | info->foundEssentialDepth = foundEssentialDepth; |
---|
| 1388 | return(preImg); |
---|
| 1389 | } |
---|
| 1390 | } |
---|
| 1391 | |
---|
| 1392 | if (depth == turnDepth) { |
---|
| 1393 | preImg = ImgPreImageByHybrid(info, newDelta, newImg); |
---|
| 1394 | if (info->option->debug) { |
---|
| 1395 | refResult = ImgPreImageByHybrid(info, newDelta, newImg); |
---|
| 1396 | tmp = refResult; |
---|
| 1397 | refResult = mdd_and(tmp, info->debugCareSet, 1, 1); |
---|
| 1398 | mdd_free(tmp); |
---|
| 1399 | tmp = mdd_and(preImg, info->debugCareSet, 1, 1); |
---|
| 1400 | assert(mdd_equal_mod_care_set_array(refResult, tmp, |
---|
| 1401 | info->toCareSetArray)); |
---|
| 1402 | mdd_free(refResult); |
---|
| 1403 | mdd_free(tmp); |
---|
| 1404 | } |
---|
| 1405 | if (info->preCache) |
---|
| 1406 | ImgCacheInsertTable(info->preCache, newDelta, newImg, mdd_dup(preImg)); |
---|
| 1407 | else { |
---|
| 1408 | ImgVectorFree(newDelta); |
---|
| 1409 | mdd_free(newImg); |
---|
| 1410 | } |
---|
| 1411 | info->averageDepthB = (info->averageDepthB * (float)info->nLeavesB + |
---|
| 1412 | (float)depth) / (float)(info->nLeavesB + 1); |
---|
| 1413 | if (depth > info->maxDepthB) |
---|
| 1414 | info->maxDepthB = depth; |
---|
| 1415 | info->nLeavesB++; |
---|
| 1416 | info->nTurnsB++; |
---|
| 1417 | if (findEssential) |
---|
| 1418 | info->foundEssentialDepth = foundEssentialDepth; |
---|
| 1419 | return(preImg); |
---|
| 1420 | } |
---|
| 1421 | |
---|
| 1422 | split = PreImageChooseSplitVar(info, newDelta, newImg, |
---|
| 1423 | 1, info->option->preOutputSplit); |
---|
| 1424 | comp = array_fetch(ImgComponent_t *, newDelta, split); |
---|
| 1425 | var = mdd_dup(comp->var); |
---|
| 1426 | varNot = mdd_not(var); |
---|
| 1427 | imgE = bdd_cofactor(newImg, varNot); |
---|
| 1428 | mdd_free(varNot); |
---|
| 1429 | imgT = bdd_cofactor(newImg, var); |
---|
| 1430 | mdd_free(var); |
---|
| 1431 | if (!info->preCache && !info->option->debug) |
---|
| 1432 | mdd_free(newImg); |
---|
| 1433 | c = PreImageDeleteOneComponent(info, newDelta, split, &vector); |
---|
| 1434 | if (!info->preCache && !info->option->debug) |
---|
| 1435 | ImgVectorFree(newDelta); |
---|
| 1436 | |
---|
| 1437 | nRecur = 0; |
---|
| 1438 | if (bdd_is_tautology(imgT, 1)) |
---|
| 1439 | preImgT = mdd_one(info->manager); |
---|
| 1440 | else if (bdd_is_tautology(imgT, 0)) |
---|
| 1441 | preImgT = mdd_zero(info->manager); |
---|
| 1442 | else { |
---|
| 1443 | if (info->option->debug) { |
---|
| 1444 | saveCareSet = info->debugCareSet; |
---|
| 1445 | info->debugCareSet = mdd_and(saveCareSet, c, 1, 1); |
---|
| 1446 | } |
---|
| 1447 | preImgT = PreImageByConstraintCofactoring(info, vector, imgT, splitMethod, |
---|
| 1448 | turnDepth, depth + 1); |
---|
| 1449 | if (info->option->debug) { |
---|
| 1450 | mdd_free(info->debugCareSet); |
---|
| 1451 | info->debugCareSet = saveCareSet; |
---|
| 1452 | } |
---|
| 1453 | if (findEssential) |
---|
| 1454 | foundEssentialDepthT = info->foundEssentialDepth; |
---|
| 1455 | nRecur++; |
---|
| 1456 | } |
---|
| 1457 | mdd_free(imgT); |
---|
| 1458 | if (bdd_is_tautology(imgE, 1)) |
---|
| 1459 | preImgE = mdd_one(info->manager); |
---|
| 1460 | else if (bdd_is_tautology(imgE, 0)) |
---|
| 1461 | preImgE = mdd_zero(info->manager); |
---|
| 1462 | else { |
---|
| 1463 | if (info->option->debug) { |
---|
| 1464 | saveCareSet = info->debugCareSet; |
---|
| 1465 | info->debugCareSet = mdd_and(saveCareSet, c, 1, 0); |
---|
| 1466 | } |
---|
| 1467 | preImgE = PreImageByConstraintCofactoring(info, vector, imgE, splitMethod, |
---|
| 1468 | turnDepth, depth + 1); |
---|
| 1469 | if (info->option->debug) { |
---|
| 1470 | mdd_free(info->debugCareSet); |
---|
| 1471 | info->debugCareSet = saveCareSet; |
---|
| 1472 | } |
---|
| 1473 | if (findEssential) |
---|
| 1474 | foundEssentialDepthE = info->foundEssentialDepth; |
---|
| 1475 | nRecur++; |
---|
| 1476 | } |
---|
| 1477 | mdd_free(imgE); |
---|
| 1478 | ImgVectorFree(vector); |
---|
| 1479 | preImg = bdd_ite(c, preImgT, preImgE, 1, 1, 1); |
---|
| 1480 | if (info->option->verbosity) { |
---|
| 1481 | size = bdd_size(preImg); |
---|
| 1482 | if (size > info->maxIntermediateSize) |
---|
| 1483 | info->maxIntermediateSize = size; |
---|
| 1484 | if (info->option->printBddSize) { |
---|
| 1485 | fprintf(vis_stdout, "** tfm info: bdd_ite(%d,%d,%d) = %d\n", |
---|
| 1486 | bdd_size(c), bdd_size(preImgT), bdd_size(preImgE), |
---|
| 1487 | bdd_size(preImg)); |
---|
| 1488 | } |
---|
| 1489 | } |
---|
| 1490 | mdd_free(c); |
---|
| 1491 | mdd_free(preImgT); |
---|
| 1492 | mdd_free(preImgE); |
---|
| 1493 | |
---|
| 1494 | if (info->preCache) |
---|
| 1495 | ImgCacheInsertTable(info->preCache, newDelta, newImg, mdd_dup(preImg)); |
---|
| 1496 | |
---|
| 1497 | if (info->option->debug) { |
---|
| 1498 | refResult = ImgPreImageByHybrid(info, newDelta, newImg); |
---|
| 1499 | tmp = refResult; |
---|
| 1500 | refResult = mdd_and(tmp, info->debugCareSet, 1, 1); |
---|
| 1501 | mdd_free(tmp); |
---|
| 1502 | tmp = mdd_and(preImg, info->debugCareSet, 1, 1); |
---|
| 1503 | assert(mdd_equal_mod_care_set_array(refResult, tmp, |
---|
| 1504 | info->toCareSetArray)); |
---|
| 1505 | mdd_free(refResult); |
---|
| 1506 | mdd_free(tmp); |
---|
| 1507 | if (!info->preCache) { |
---|
| 1508 | ImgVectorFree(newDelta); |
---|
| 1509 | mdd_free(newImg); |
---|
| 1510 | } |
---|
| 1511 | } |
---|
| 1512 | |
---|
| 1513 | if (nRecur == 0) { |
---|
| 1514 | info->averageDepthB = (info->averageDepthB * (float)info->nLeavesB + |
---|
| 1515 | (float)depth) / (float)(info->nLeavesB + 1); |
---|
| 1516 | if (depth > info->maxDepthB) |
---|
| 1517 | info->maxDepthB = depth; |
---|
| 1518 | info->nLeavesB++; |
---|
| 1519 | } |
---|
| 1520 | |
---|
| 1521 | if (findEssential) { |
---|
| 1522 | if (foundEssentialDepth == info->option->maxEssentialDepth) { |
---|
| 1523 | if (foundEssentialDepthT < foundEssentialDepthE) |
---|
| 1524 | foundEssentialDepth = foundEssentialDepthT; |
---|
| 1525 | else |
---|
| 1526 | foundEssentialDepth = foundEssentialDepthE; |
---|
| 1527 | } |
---|
| 1528 | info->foundEssentialDepth = foundEssentialDepth; |
---|
| 1529 | } |
---|
| 1530 | return(preImg); |
---|
| 1531 | } |
---|
| 1532 | |
---|
| 1533 | |
---|
| 1534 | /**Function******************************************************************** |
---|
| 1535 | |
---|
| 1536 | Synopsis [Computes a preimage by Filkorn's substitution.] |
---|
| 1537 | |
---|
| 1538 | Description [Computes a preimage by Filkorn's substitution.] |
---|
| 1539 | |
---|
| 1540 | SideEffects [] |
---|
| 1541 | |
---|
| 1542 | ******************************************************************************/ |
---|
| 1543 | static mdd_t * |
---|
| 1544 | PreImageBySubstitution(ImgTfmInfo_t *info, array_t *vector, mdd_t *from) |
---|
| 1545 | { |
---|
| 1546 | int i, index; |
---|
| 1547 | ImgComponent_t *comp, *fromComp; |
---|
| 1548 | array_t *varArray, *funcArray; |
---|
| 1549 | mdd_t *result; |
---|
| 1550 | |
---|
| 1551 | if (bdd_is_tautology(from, 1)) |
---|
| 1552 | return(mdd_one(info->manager)); |
---|
| 1553 | else if (bdd_is_tautology(from, 0)) |
---|
| 1554 | return(mdd_zero(info->manager)); |
---|
| 1555 | |
---|
| 1556 | fromComp = ImgComponentAlloc(info); |
---|
| 1557 | fromComp->func = from; |
---|
| 1558 | ImgComponentGetSupport(fromComp); |
---|
| 1559 | |
---|
| 1560 | varArray = array_alloc(mdd_t *, 0); |
---|
| 1561 | funcArray = array_alloc(mdd_t *, 0); |
---|
| 1562 | |
---|
| 1563 | for (i = 0; i < array_n(vector); i++) { |
---|
| 1564 | comp = array_fetch(ImgComponent_t *, vector, i); |
---|
| 1565 | index = bdd_top_var_id(comp->var); |
---|
| 1566 | if (fromComp->support[index] || comp->intermediate) { |
---|
| 1567 | array_insert_last(mdd_t *, varArray, comp->var); |
---|
| 1568 | array_insert_last(mdd_t *, funcArray, comp->func); |
---|
| 1569 | } |
---|
| 1570 | } |
---|
| 1571 | |
---|
| 1572 | fromComp->func = NIL(mdd_t); |
---|
| 1573 | ImgComponentFree(fromComp); |
---|
| 1574 | |
---|
| 1575 | result = bdd_vector_compose(from, varArray, funcArray); |
---|
| 1576 | array_free(varArray); |
---|
| 1577 | array_free(funcArray); |
---|
| 1578 | |
---|
| 1579 | /* quantify all primary inputs */ |
---|
| 1580 | if (info->preKeepPiInTr == FALSE) { |
---|
| 1581 | array_t *quantifyVarBddArray; |
---|
| 1582 | mdd_t *tmp; |
---|
| 1583 | |
---|
| 1584 | if (info->newQuantifyBddVars) |
---|
| 1585 | quantifyVarBddArray = info->newQuantifyBddVars; |
---|
| 1586 | else |
---|
| 1587 | quantifyVarBddArray = info->quantifyVarBddArray; |
---|
| 1588 | |
---|
| 1589 | tmp = result; |
---|
| 1590 | result = bdd_smooth(tmp, quantifyVarBddArray); |
---|
| 1591 | mdd_free(tmp); |
---|
| 1592 | } |
---|
| 1593 | |
---|
| 1594 | return(result); |
---|
| 1595 | } |
---|
| 1596 | |
---|
| 1597 | |
---|
| 1598 | /**Function******************************************************************** |
---|
| 1599 | |
---|
| 1600 | Synopsis [Makes a vector canonical for preimage.] |
---|
| 1601 | |
---|
| 1602 | Description [Makes a vector canonical for preimage. |
---|
| 1603 | Delete all the components which doesn't appear as a support |
---|
| 1604 | in the image. If a component is constant, simplify the image with the |
---|
| 1605 | constant value and delete the corresponding component from delta |
---|
| 1606 | Side effect on delta. Return new image.] |
---|
| 1607 | |
---|
| 1608 | SideEffects [] |
---|
| 1609 | |
---|
| 1610 | ******************************************************************************/ |
---|
| 1611 | static bdd_t * |
---|
| 1612 | PreImageMakeVectorCanonical(ImgTfmInfo_t *info, array_t *vector, bdd_t *image, |
---|
| 1613 | array_t *relationArray, array_t **newVector, |
---|
| 1614 | array_t **newRelationArray, |
---|
| 1615 | mdd_t **cofactorCube, mdd_t **abstractCube) |
---|
| 1616 | { |
---|
| 1617 | array_t *tmpVector, *cofactoredVector; |
---|
| 1618 | bdd_t *simple, *tmp, *newImage; |
---|
| 1619 | ImgComponent_t *comp, *comp1, *imgComp; |
---|
| 1620 | int i, id, n, pos; |
---|
| 1621 | st_table *equivTable; |
---|
| 1622 | int *ptr, *regularPtr; |
---|
| 1623 | mdd_t *var, *cofactor, *abstract, *nsVar; |
---|
| 1624 | array_t *tmpRelationArray; |
---|
| 1625 | int changed = 0; |
---|
| 1626 | |
---|
| 1627 | newImage = mdd_dup(image); |
---|
| 1628 | |
---|
| 1629 | imgComp = ImgComponentAlloc(info); |
---|
| 1630 | imgComp->func = image; |
---|
| 1631 | ImgComponentGetSupport(imgComp); |
---|
| 1632 | |
---|
| 1633 | if (relationArray) { |
---|
| 1634 | cofactor = mdd_one(info->manager); |
---|
| 1635 | abstract = mdd_one(info->manager); |
---|
| 1636 | } else { |
---|
| 1637 | cofactor = NIL(mdd_t); |
---|
| 1638 | abstract = NIL(mdd_t); |
---|
| 1639 | } |
---|
| 1640 | |
---|
| 1641 | if (info->nIntermediateVars) { |
---|
| 1642 | mdd_t *tmpCofactor, *tmpAbstract; |
---|
| 1643 | mdd_t *constIntermediate; |
---|
| 1644 | |
---|
| 1645 | if (ImgExistConstIntermediateVar(vector)) { |
---|
| 1646 | constIntermediate = mdd_one(info->manager); |
---|
| 1647 | for (i = 0; i < array_n(vector); i++) { |
---|
| 1648 | comp = array_fetch(ImgComponent_t *, vector, i); |
---|
| 1649 | if (comp->intermediate) { |
---|
| 1650 | if (mdd_is_tautology(comp->func, 1)) { |
---|
| 1651 | tmp = constIntermediate; |
---|
| 1652 | constIntermediate = mdd_and(tmp, comp->var, 1, 1); |
---|
| 1653 | mdd_free(tmp); |
---|
| 1654 | } else if (mdd_is_tautology(comp->func, 0)) { |
---|
| 1655 | tmp = constIntermediate; |
---|
| 1656 | constIntermediate = mdd_and(tmp, comp->var, 1, 0); |
---|
| 1657 | mdd_free(tmp); |
---|
| 1658 | } |
---|
| 1659 | } |
---|
| 1660 | } |
---|
| 1661 | if (relationArray) { |
---|
| 1662 | cofactoredVector = ImgComposeConstIntermediateVars(info, vector, |
---|
| 1663 | constIntermediate, |
---|
| 1664 | &tmpCofactor, &tmpAbstract, |
---|
| 1665 | NIL(mdd_t *), &newImage); |
---|
| 1666 | |
---|
| 1667 | if (!bdd_is_tautology(tmpCofactor, 1)) { |
---|
| 1668 | tmp = cofactor; |
---|
| 1669 | cofactor = mdd_and(tmp, tmpCofactor, 1, 1); |
---|
| 1670 | mdd_free(tmp); |
---|
| 1671 | } |
---|
| 1672 | mdd_free(tmpCofactor); |
---|
| 1673 | if (!bdd_is_tautology(tmpAbstract, 1)) { |
---|
| 1674 | tmp = abstract; |
---|
| 1675 | abstract = mdd_and(tmp, tmpAbstract, 1, 1); |
---|
| 1676 | mdd_free(tmp); |
---|
| 1677 | } |
---|
| 1678 | mdd_free(tmpAbstract); |
---|
| 1679 | } else { |
---|
| 1680 | cofactoredVector = ImgComposeConstIntermediateVars(info, vector, |
---|
| 1681 | constIntermediate, |
---|
| 1682 | NIL(mdd_t *), NIL(mdd_t *), |
---|
| 1683 | NIL(mdd_t *), &newImage); |
---|
| 1684 | } |
---|
| 1685 | mdd_free(constIntermediate); |
---|
| 1686 | } else |
---|
| 1687 | cofactoredVector = vector; |
---|
| 1688 | } else |
---|
| 1689 | cofactoredVector = vector; |
---|
| 1690 | |
---|
| 1691 | /* Simplify image -- canonicalize the image first */ |
---|
| 1692 | n = 0; |
---|
| 1693 | equivTable = st_init_table(st_ptrcmp, st_ptrhash); |
---|
| 1694 | tmpVector = array_alloc(ImgComponent_t *, 0); |
---|
| 1695 | for (i = 0; i < array_n(cofactoredVector); i++) { |
---|
| 1696 | comp = array_fetch(ImgComponent_t *, cofactoredVector, i); |
---|
| 1697 | if (comp->intermediate) { |
---|
| 1698 | comp1 = ImgComponentCopy(info, comp); |
---|
| 1699 | array_insert_last(ImgComponent_t *, tmpVector, comp1); |
---|
| 1700 | n++; |
---|
| 1701 | continue; |
---|
| 1702 | } |
---|
| 1703 | id = (int)bdd_top_var_id(comp->var); |
---|
| 1704 | if (!imgComp->support[id]) { |
---|
| 1705 | if (abstract) { |
---|
| 1706 | nsVar = ImgSubstitute(comp->var, info->functionData, Img_D2R_c); |
---|
| 1707 | tmp = abstract; |
---|
| 1708 | abstract = mdd_and(tmp, nsVar, 1, 1); |
---|
| 1709 | mdd_free(tmp); |
---|
| 1710 | mdd_free(nsVar); |
---|
| 1711 | } |
---|
| 1712 | continue; |
---|
| 1713 | } |
---|
| 1714 | if (mdd_is_tautology(comp->func, 1)) { |
---|
| 1715 | changed = 1; |
---|
| 1716 | simple = bdd_cofactor(newImage, comp->var); |
---|
| 1717 | mdd_free(newImage); |
---|
| 1718 | newImage = simple; |
---|
| 1719 | if (abstract) { |
---|
| 1720 | nsVar = ImgSubstitute(comp->var, info->functionData, Img_D2R_c); |
---|
| 1721 | tmp = abstract; |
---|
| 1722 | abstract = mdd_and(tmp, nsVar, 1, 1); |
---|
| 1723 | mdd_free(tmp); |
---|
| 1724 | mdd_free(nsVar); |
---|
| 1725 | } |
---|
| 1726 | } else if (mdd_is_tautology(comp->func, 0)) { |
---|
| 1727 | changed = 1; |
---|
| 1728 | tmp = mdd_not(comp->var); |
---|
| 1729 | simple = bdd_cofactor(newImage, tmp); |
---|
| 1730 | mdd_free(tmp); |
---|
| 1731 | mdd_free(newImage); |
---|
| 1732 | newImage = simple; |
---|
| 1733 | if (abstract) { |
---|
| 1734 | nsVar = ImgSubstitute(comp->var, info->functionData, Img_D2R_c); |
---|
| 1735 | tmp = abstract; |
---|
| 1736 | abstract = mdd_and(tmp, nsVar, 1, 1); |
---|
| 1737 | mdd_free(tmp); |
---|
| 1738 | mdd_free(nsVar); |
---|
| 1739 | } |
---|
| 1740 | } else { |
---|
| 1741 | ptr = (int *)bdd_pointer(comp->func); |
---|
| 1742 | regularPtr = (int *)((unsigned long)ptr & ~01); |
---|
| 1743 | if (st_lookup_int(equivTable, (char *)regularPtr, &pos)) { |
---|
| 1744 | changed = 1; |
---|
| 1745 | comp1 = array_fetch(ImgComponent_t *, tmpVector, pos); |
---|
| 1746 | if (mdd_equal(comp->func, comp1->func)) { |
---|
| 1747 | tmp = newImage; |
---|
| 1748 | newImage = bdd_compose(tmp, comp->var, comp1->var); |
---|
| 1749 | mdd_free(tmp); |
---|
| 1750 | } else { |
---|
| 1751 | tmp = newImage; |
---|
| 1752 | var = mdd_not(comp1->var); |
---|
| 1753 | newImage = bdd_compose(tmp, comp->var, var); |
---|
| 1754 | mdd_free(tmp); |
---|
| 1755 | mdd_free(var); |
---|
| 1756 | } |
---|
| 1757 | if (abstract) { |
---|
| 1758 | nsVar = ImgSubstitute(comp->var, info->functionData, Img_D2R_c); |
---|
| 1759 | tmp = abstract; |
---|
| 1760 | abstract = mdd_and(tmp, nsVar, 1, 1); |
---|
| 1761 | mdd_free(tmp); |
---|
| 1762 | mdd_free(nsVar); |
---|
| 1763 | } |
---|
| 1764 | } else { |
---|
| 1765 | comp1 = ImgComponentCopy(info, comp); |
---|
| 1766 | array_insert_last(ImgComponent_t *, tmpVector, comp1); |
---|
| 1767 | st_insert(equivTable, (char *)regularPtr, (char *)(long)n); |
---|
| 1768 | n++; |
---|
| 1769 | } |
---|
| 1770 | } |
---|
| 1771 | } |
---|
| 1772 | st_free_table(equivTable); |
---|
| 1773 | if (cofactoredVector && cofactoredVector != vector) |
---|
| 1774 | ImgVectorFree(cofactoredVector); |
---|
| 1775 | |
---|
| 1776 | if (changed) { |
---|
| 1777 | /* Now Simplify delta by deleting the non-affecting components */ |
---|
| 1778 | *newVector = array_alloc(ImgComponent_t *, 0); |
---|
| 1779 | |
---|
| 1780 | imgComp->func = NIL(mdd_t); |
---|
| 1781 | ImgComponentFree(imgComp); |
---|
| 1782 | |
---|
| 1783 | imgComp = ImgComponentAlloc(info); |
---|
| 1784 | imgComp->func = newImage; |
---|
| 1785 | ImgSupportClear(info, imgComp->support); |
---|
| 1786 | ImgComponentGetSupport(imgComp); |
---|
| 1787 | for (i = 0; i < array_n(tmpVector); i++) { |
---|
| 1788 | comp = array_fetch(ImgComponent_t *, tmpVector, i); |
---|
| 1789 | id = (int)bdd_top_var_id(comp->var); |
---|
| 1790 | if (imgComp->support[id] || comp->intermediate) |
---|
| 1791 | array_insert_last(ImgComponent_t *, *newVector, comp); |
---|
| 1792 | else { |
---|
| 1793 | if (abstract) { |
---|
| 1794 | nsVar = ImgSubstitute(comp->var, info->functionData, Img_D2R_c); |
---|
| 1795 | tmp = abstract; |
---|
| 1796 | abstract = mdd_and(tmp, nsVar, 1, 1); |
---|
| 1797 | mdd_free(tmp); |
---|
| 1798 | mdd_free(nsVar); |
---|
| 1799 | } |
---|
| 1800 | ImgComponentFree(comp); |
---|
| 1801 | } |
---|
| 1802 | } |
---|
| 1803 | array_free(tmpVector); |
---|
| 1804 | } else |
---|
| 1805 | *newVector = tmpVector; |
---|
| 1806 | |
---|
| 1807 | imgComp->func = NIL(mdd_t); |
---|
| 1808 | ImgComponentFree(imgComp); |
---|
| 1809 | |
---|
| 1810 | if (newRelationArray) |
---|
| 1811 | *newRelationArray = relationArray; |
---|
| 1812 | if (cofactor) { |
---|
| 1813 | if (cofactorCube) |
---|
| 1814 | *cofactorCube = cofactor; |
---|
| 1815 | else { |
---|
| 1816 | if (!bdd_is_tautology(cofactor, 1)) { |
---|
| 1817 | tmpRelationArray = *newRelationArray; |
---|
| 1818 | *newRelationArray = ImgGetCofactoredRelationArray(tmpRelationArray, |
---|
| 1819 | cofactor); |
---|
| 1820 | if (tmpRelationArray != relationArray) |
---|
| 1821 | mdd_array_free(tmpRelationArray); |
---|
| 1822 | } |
---|
| 1823 | mdd_free(cofactor); |
---|
| 1824 | } |
---|
| 1825 | } |
---|
| 1826 | if (abstract) { |
---|
| 1827 | if (abstractCube) |
---|
| 1828 | *abstractCube = abstract; |
---|
| 1829 | else { |
---|
| 1830 | if (bdd_is_tautology(abstract, 1)) |
---|
| 1831 | mdd_free(abstract); |
---|
| 1832 | else { |
---|
| 1833 | tmpRelationArray = *newRelationArray; |
---|
| 1834 | *newRelationArray = ImgGetAbstractedRelationArray(info->manager, |
---|
| 1835 | tmpRelationArray, |
---|
| 1836 | abstract); |
---|
| 1837 | mdd_free(abstract); |
---|
| 1838 | if (tmpRelationArray != relationArray) |
---|
| 1839 | mdd_array_free(tmpRelationArray); |
---|
| 1840 | } |
---|
| 1841 | } |
---|
| 1842 | } |
---|
| 1843 | assert(CheckPreImageVector(info, *newVector, newImage)); |
---|
| 1844 | return(newImage); |
---|
| 1845 | } |
---|
| 1846 | |
---|
| 1847 | |
---|
| 1848 | /**Function******************************************************************** |
---|
| 1849 | |
---|
| 1850 | Synopsis [Makes transition relation canonical for preimage.] |
---|
| 1851 | |
---|
| 1852 | Description [Makes transition relation canonical for preimage. |
---|
| 1853 | Quantifies out the next state variables that do not occur in the image, |
---|
| 1854 | and when a vector exists, delete the components which do not appear |
---|
| 1855 | in the image. If a component is constant, simplify the image with the |
---|
| 1856 | constant value and delete the corresponding component from delta |
---|
| 1857 | Side effect on delta. Return new image.] |
---|
| 1858 | |
---|
| 1859 | SideEffects [] |
---|
| 1860 | |
---|
| 1861 | ******************************************************************************/ |
---|
| 1862 | static bdd_t * |
---|
| 1863 | PreImageMakeRelationCanonical(ImgTfmInfo_t *info, array_t *vector, bdd_t *image, |
---|
| 1864 | array_t *relationArray, array_t **newVector, |
---|
| 1865 | array_t **newRelationArray) |
---|
| 1866 | { |
---|
| 1867 | array_t *tmpVector, *cofactoredVector; |
---|
| 1868 | bdd_t *simple, *tmp, *newImage; |
---|
| 1869 | ImgComponent_t *comp, *comp1, *imgComp; |
---|
| 1870 | int i, j, id; |
---|
| 1871 | mdd_t *cofactor, *abstract, *var, *nsVar; |
---|
| 1872 | array_t *tmpRelationArray; |
---|
| 1873 | int changed = 0; |
---|
| 1874 | mdd_t *yVarsCube, *rangeCube, *relation, *tmp2; |
---|
| 1875 | array_t *supportIds; |
---|
| 1876 | |
---|
| 1877 | imgComp = ImgComponentAlloc(info); |
---|
| 1878 | imgComp->func = image; |
---|
| 1879 | ImgComponentGetSupport(imgComp); |
---|
| 1880 | |
---|
| 1881 | if (vector) { |
---|
| 1882 | newImage = mdd_dup(image); |
---|
| 1883 | cofactor = mdd_one(info->manager); |
---|
| 1884 | abstract = mdd_one(info->manager); |
---|
| 1885 | |
---|
| 1886 | if (info->nIntermediateVars) { |
---|
| 1887 | mdd_t *tmpCofactor, *tmpAbstract; |
---|
| 1888 | mdd_t *constIntermediate; |
---|
| 1889 | |
---|
| 1890 | if (ImgExistConstIntermediateVar(vector)) { |
---|
| 1891 | constIntermediate = mdd_one(info->manager); |
---|
| 1892 | |
---|
| 1893 | for (i = 0; i < array_n(vector); i++) { |
---|
| 1894 | comp = array_fetch(ImgComponent_t *, vector, i); |
---|
| 1895 | if (comp->intermediate) { |
---|
| 1896 | if (mdd_is_tautology(comp->func, 1)) { |
---|
| 1897 | tmp = constIntermediate; |
---|
| 1898 | constIntermediate = mdd_and(tmp, comp->var, 1, 1); |
---|
| 1899 | mdd_free(tmp); |
---|
| 1900 | } else if (mdd_is_tautology(comp->func, 0)) { |
---|
| 1901 | tmp = constIntermediate; |
---|
| 1902 | constIntermediate = mdd_and(tmp, comp->var, 1, 0); |
---|
| 1903 | mdd_free(tmp); |
---|
| 1904 | } |
---|
| 1905 | } |
---|
| 1906 | } |
---|
| 1907 | |
---|
| 1908 | cofactoredVector = ImgComposeConstIntermediateVars(info, vector, |
---|
| 1909 | constIntermediate, |
---|
| 1910 | &tmpCofactor, |
---|
| 1911 | &tmpAbstract, |
---|
| 1912 | NIL(mdd_t *), |
---|
| 1913 | &newImage); |
---|
| 1914 | |
---|
| 1915 | if (!bdd_is_tautology(tmpCofactor, 1)) { |
---|
| 1916 | tmp = cofactor; |
---|
| 1917 | cofactor = mdd_and(tmp, tmpCofactor, 1, 1); |
---|
| 1918 | mdd_free(tmp); |
---|
| 1919 | } |
---|
| 1920 | mdd_free(tmpCofactor); |
---|
| 1921 | if (!bdd_is_tautology(tmpAbstract, 1)) { |
---|
| 1922 | tmp = abstract; |
---|
| 1923 | abstract = mdd_and(tmp, tmpAbstract, 1, 1); |
---|
| 1924 | mdd_free(tmp); |
---|
| 1925 | } |
---|
| 1926 | mdd_free(tmpAbstract); |
---|
| 1927 | mdd_free(constIntermediate); |
---|
| 1928 | } else |
---|
| 1929 | cofactoredVector = vector; |
---|
| 1930 | } else |
---|
| 1931 | cofactoredVector = vector; |
---|
| 1932 | |
---|
| 1933 | /* Simplify image -- canonicalize vector */ |
---|
| 1934 | tmpVector = array_alloc(ImgComponent_t *, 0); |
---|
| 1935 | for (i = 0; i < array_n(cofactoredVector); i++) { |
---|
| 1936 | comp = array_fetch(ImgComponent_t *, cofactoredVector, i); |
---|
| 1937 | if (comp->intermediate) { |
---|
| 1938 | comp1 = ImgComponentCopy(info, comp); |
---|
| 1939 | array_insert_last(ImgComponent_t *, tmpVector, comp1); |
---|
| 1940 | continue; |
---|
| 1941 | } |
---|
| 1942 | id = (int)bdd_top_var_id(comp->var); |
---|
| 1943 | if (!imgComp->support[id]) { |
---|
| 1944 | if (abstract) { |
---|
| 1945 | nsVar = ImgSubstitute(comp->var, info->functionData, Img_D2R_c); |
---|
| 1946 | tmp = abstract; |
---|
| 1947 | abstract = mdd_and(tmp, nsVar, 1, 1); |
---|
| 1948 | mdd_free(tmp); |
---|
| 1949 | mdd_free(nsVar); |
---|
| 1950 | } |
---|
| 1951 | continue; |
---|
| 1952 | } |
---|
| 1953 | if (mdd_is_tautology(comp->func, 1)) { |
---|
| 1954 | changed = 1; |
---|
| 1955 | simple = bdd_cofactor(newImage, comp->var); |
---|
| 1956 | mdd_free(newImage); |
---|
| 1957 | newImage = simple; |
---|
| 1958 | if (abstract) { |
---|
| 1959 | nsVar = ImgSubstitute(comp->var, info->functionData, Img_D2R_c); |
---|
| 1960 | tmp = abstract; |
---|
| 1961 | abstract = mdd_and(tmp, nsVar, 1, 1); |
---|
| 1962 | mdd_free(tmp); |
---|
| 1963 | mdd_free(nsVar); |
---|
| 1964 | } |
---|
| 1965 | } else if (mdd_is_tautology(comp->func, 0)) { |
---|
| 1966 | changed = 1; |
---|
| 1967 | tmp = mdd_not(comp->var); |
---|
| 1968 | simple = bdd_cofactor(newImage, tmp); |
---|
| 1969 | mdd_free(tmp); |
---|
| 1970 | mdd_free(newImage); |
---|
| 1971 | newImage = simple; |
---|
| 1972 | if (abstract) { |
---|
| 1973 | nsVar = ImgSubstitute(comp->var, info->functionData, Img_D2R_c); |
---|
| 1974 | tmp = abstract; |
---|
| 1975 | abstract = mdd_and(tmp, nsVar, 1, 1); |
---|
| 1976 | mdd_free(tmp); |
---|
| 1977 | mdd_free(nsVar); |
---|
| 1978 | } |
---|
| 1979 | } else { |
---|
| 1980 | comp1 = ImgComponentCopy(info, comp); |
---|
| 1981 | array_insert_last(ImgComponent_t *, tmpVector, comp1); |
---|
| 1982 | } |
---|
| 1983 | } |
---|
| 1984 | if (cofactoredVector && cofactoredVector != vector) |
---|
| 1985 | ImgVectorFree(cofactoredVector); |
---|
| 1986 | |
---|
| 1987 | if (changed) { |
---|
| 1988 | /* Now Simplify delta by deleting the non-affecting components */ |
---|
| 1989 | *newVector = array_alloc(ImgComponent_t *, 0); |
---|
| 1990 | |
---|
| 1991 | imgComp->func = NIL(mdd_t); |
---|
| 1992 | ImgComponentFree(imgComp); |
---|
| 1993 | |
---|
| 1994 | imgComp = ImgComponentAlloc(info); |
---|
| 1995 | imgComp->func = newImage; |
---|
| 1996 | ImgSupportClear(info, imgComp->support); |
---|
| 1997 | ImgComponentGetSupport(imgComp); |
---|
| 1998 | for (i = 0; i < array_n(tmpVector); i++) { |
---|
| 1999 | comp = array_fetch(ImgComponent_t *, tmpVector, i); |
---|
| 2000 | id = (int)bdd_top_var_id(comp->var); |
---|
| 2001 | if (imgComp->support[id] || comp->intermediate) |
---|
| 2002 | array_insert_last(ImgComponent_t *, *newVector, comp); |
---|
| 2003 | else { |
---|
| 2004 | if (abstract) { |
---|
| 2005 | nsVar = ImgSubstitute(comp->var, info->functionData, Img_D2R_c); |
---|
| 2006 | tmp = abstract; |
---|
| 2007 | abstract = mdd_and(tmp, nsVar, 1, 1); |
---|
| 2008 | mdd_free(tmp); |
---|
| 2009 | mdd_free(nsVar); |
---|
| 2010 | } |
---|
| 2011 | ImgComponentFree(comp); |
---|
| 2012 | } |
---|
| 2013 | } |
---|
| 2014 | array_free(tmpVector); |
---|
| 2015 | } else |
---|
| 2016 | *newVector = tmpVector; |
---|
| 2017 | } else { |
---|
| 2018 | newImage = image; |
---|
| 2019 | *newVector = vector; |
---|
| 2020 | cofactor = NIL(mdd_t); |
---|
| 2021 | abstract = NIL(mdd_t); |
---|
| 2022 | } |
---|
| 2023 | |
---|
| 2024 | yVarsCube = mdd_one(info->manager); |
---|
| 2025 | for (i = 0; i < info->nVars; i++) { |
---|
| 2026 | if (imgComp->support[i]) { |
---|
| 2027 | imgComp->support[i] = 0; |
---|
| 2028 | if (st_lookup(info->quantifyVarsTable, (char *)(long)i, NIL(char *))) |
---|
| 2029 | continue; |
---|
| 2030 | if (info->intermediateVarsTable && |
---|
| 2031 | st_lookup(info->intermediateVarsTable, (char *)(long)i, |
---|
| 2032 | NIL(char *))) { |
---|
| 2033 | continue; |
---|
| 2034 | } |
---|
| 2035 | var = bdd_var_with_index(info->manager, i); |
---|
| 2036 | nsVar = ImgSubstitute(var, info->functionData, Img_D2R_c); |
---|
| 2037 | mdd_free(var); |
---|
| 2038 | id = (int)bdd_top_var_id(nsVar); |
---|
| 2039 | imgComp->support[id] = 1; |
---|
| 2040 | tmp = yVarsCube; |
---|
| 2041 | yVarsCube = mdd_and(tmp, nsVar, 1, 1); |
---|
| 2042 | mdd_free(tmp); |
---|
| 2043 | mdd_free(nsVar); |
---|
| 2044 | } |
---|
| 2045 | } |
---|
| 2046 | |
---|
| 2047 | if (vector) { |
---|
| 2048 | for (i = 0; i < array_n(*newVector); i++) { |
---|
| 2049 | comp = array_fetch(ImgComponent_t *, *newVector, i); |
---|
| 2050 | nsVar = ImgSubstitute(comp->var, info->functionData, Img_D2R_c); |
---|
| 2051 | id = (int)bdd_top_var_id(nsVar); |
---|
| 2052 | imgComp->support[id] = 2; |
---|
| 2053 | mdd_free(nsVar); |
---|
| 2054 | } |
---|
| 2055 | } |
---|
| 2056 | |
---|
| 2057 | for (i = 0; i < array_n(relationArray); i++) { |
---|
| 2058 | relation = array_fetch(mdd_t *, relationArray, i); |
---|
| 2059 | supportIds = mdd_get_bdd_support_ids(info->manager, relation); |
---|
| 2060 | for (j = 0; j < array_n(supportIds); j++) { |
---|
| 2061 | id = array_fetch(int, supportIds, j); |
---|
| 2062 | imgComp->support[id] = 2; |
---|
| 2063 | } |
---|
| 2064 | array_free(supportIds); |
---|
| 2065 | } |
---|
| 2066 | |
---|
| 2067 | for (i = 0; i < info->nVars; i++) { |
---|
| 2068 | if (imgComp->support[i] == 1) { |
---|
| 2069 | nsVar = bdd_var_with_index(info->manager, i); |
---|
| 2070 | var = ImgSubstitute(nsVar, info->functionData, Img_R2D_c); |
---|
| 2071 | mdd_free(nsVar); |
---|
| 2072 | tmp = newImage; |
---|
| 2073 | newImage = bdd_smooth_with_cube(tmp, var); |
---|
| 2074 | if (tmp != image) |
---|
| 2075 | mdd_free(tmp); |
---|
| 2076 | mdd_free(var); |
---|
| 2077 | } |
---|
| 2078 | } |
---|
| 2079 | |
---|
| 2080 | imgComp->func = NIL(mdd_t); |
---|
| 2081 | ImgComponentFree(imgComp); |
---|
| 2082 | |
---|
| 2083 | if (bdd_get_package_name() == CUDD) |
---|
| 2084 | rangeCube = info->functionData->rangeCube; |
---|
| 2085 | else { |
---|
| 2086 | rangeCube = mdd_one(info->manager); |
---|
| 2087 | for (i = 0; i < array_n(info->functionData->rangeBddVars); i++) { |
---|
| 2088 | var = array_fetch(mdd_t *, info->functionData->rangeBddVars, i); |
---|
| 2089 | tmp = rangeCube; |
---|
| 2090 | rangeCube = mdd_and(tmp, var, 1, 1); |
---|
| 2091 | mdd_free(tmp); |
---|
| 2092 | } |
---|
| 2093 | } |
---|
| 2094 | |
---|
| 2095 | cofactor = NIL(mdd_t); |
---|
| 2096 | if (abstract) { |
---|
| 2097 | tmp2 = bdd_smooth_with_cube(rangeCube, yVarsCube); |
---|
| 2098 | tmp = abstract; |
---|
| 2099 | abstract = mdd_and(tmp, tmp2, 1, 1); |
---|
| 2100 | mdd_free(tmp); |
---|
| 2101 | mdd_free(tmp2); |
---|
| 2102 | } else |
---|
| 2103 | abstract = bdd_smooth_with_cube(rangeCube, yVarsCube); |
---|
| 2104 | mdd_free(yVarsCube); |
---|
| 2105 | if (rangeCube != info->functionData->rangeCube) |
---|
| 2106 | mdd_free(rangeCube); |
---|
| 2107 | |
---|
| 2108 | *newRelationArray = relationArray; |
---|
| 2109 | if (cofactor) { |
---|
| 2110 | if (!bdd_is_tautology(cofactor, 1)) { |
---|
| 2111 | tmpRelationArray = *newRelationArray; |
---|
| 2112 | *newRelationArray = ImgGetCofactoredRelationArray(tmpRelationArray, |
---|
| 2113 | cofactor); |
---|
| 2114 | if (tmpRelationArray != relationArray) |
---|
| 2115 | mdd_array_free(tmpRelationArray); |
---|
| 2116 | } |
---|
| 2117 | mdd_free(cofactor); |
---|
| 2118 | } |
---|
| 2119 | if (bdd_is_tautology(abstract, 1)) |
---|
| 2120 | mdd_free(abstract); |
---|
| 2121 | else { |
---|
| 2122 | tmpRelationArray = *newRelationArray; |
---|
| 2123 | *newRelationArray = ImgGetAbstractedRelationArray(info->manager, |
---|
| 2124 | tmpRelationArray, |
---|
| 2125 | abstract); |
---|
| 2126 | mdd_free(abstract); |
---|
| 2127 | if (tmpRelationArray != relationArray) |
---|
| 2128 | mdd_array_free(tmpRelationArray); |
---|
| 2129 | } |
---|
| 2130 | return(newImage); |
---|
| 2131 | } |
---|
| 2132 | |
---|
| 2133 | |
---|
| 2134 | /**Function******************************************************************** |
---|
| 2135 | |
---|
| 2136 | Synopsis [Deletes a component in a vector.] |
---|
| 2137 | |
---|
| 2138 | Description [Deletes a component in a vector. Deletes index-th component |
---|
| 2139 | out of delta and copy it into newDelta.] |
---|
| 2140 | |
---|
| 2141 | SideEffects [] |
---|
| 2142 | |
---|
| 2143 | ******************************************************************************/ |
---|
| 2144 | static bdd_t * |
---|
| 2145 | PreImageDeleteOneComponent(ImgTfmInfo_t *info, array_t *delta, int index, |
---|
| 2146 | array_t **newDelta) |
---|
| 2147 | { |
---|
| 2148 | int i; |
---|
| 2149 | ImgComponent_t *comp, *tmpComp; |
---|
| 2150 | bdd_t *func, *newFunc; |
---|
| 2151 | int preMinimize = info->option->preMinimize; |
---|
| 2152 | |
---|
| 2153 | assert(array_n(delta) > 0); |
---|
| 2154 | |
---|
| 2155 | comp = array_fetch(ImgComponent_t *, delta, index); |
---|
| 2156 | func = mdd_dup(comp->func); |
---|
| 2157 | |
---|
| 2158 | *newDelta = array_alloc(ImgComponent_t *, 0); |
---|
| 2159 | for (i = 0; i < array_n(delta); i++) { |
---|
| 2160 | if (i != index) { |
---|
| 2161 | comp = array_fetch(ImgComponent_t *, delta, i); |
---|
| 2162 | tmpComp = ImgComponentCopy(info, comp); |
---|
| 2163 | if (preMinimize) { |
---|
| 2164 | newFunc = bdd_minimize(tmpComp->func, func); |
---|
| 2165 | if (mdd_equal(newFunc, tmpComp->func)) |
---|
| 2166 | mdd_free(newFunc); |
---|
| 2167 | else { |
---|
| 2168 | mdd_free(tmpComp->func); |
---|
| 2169 | tmpComp->func = newFunc; |
---|
| 2170 | ImgSupportClear(info, tmpComp->support); |
---|
| 2171 | ImgComponentGetSupport(tmpComp); |
---|
| 2172 | } |
---|
| 2173 | } |
---|
| 2174 | array_insert_last(ImgComponent_t *, (*newDelta), tmpComp); |
---|
| 2175 | } |
---|
| 2176 | } |
---|
| 2177 | |
---|
| 2178 | return(func); |
---|
| 2179 | } |
---|
| 2180 | |
---|
| 2181 | |
---|
| 2182 | /**Function******************************************************************** |
---|
| 2183 | |
---|
| 2184 | Synopsis [Chooses a splitting variable for preimage.] |
---|
| 2185 | |
---|
| 2186 | Description [Chooses a splitting variable for preimage.] |
---|
| 2187 | |
---|
| 2188 | SideEffects [] |
---|
| 2189 | |
---|
| 2190 | ******************************************************************************/ |
---|
| 2191 | static int |
---|
| 2192 | PreImageChooseSplitVar(ImgTfmInfo_t *info, array_t *delta, bdd_t *img, |
---|
| 2193 | int splitMethod, int split) |
---|
| 2194 | { |
---|
| 2195 | ImgComponent_t *comp, *imgComp; |
---|
| 2196 | int i, j, bestCost, newCost; |
---|
| 2197 | int index, bestVar, bestComp; |
---|
| 2198 | int nFuncs, nVars, bestOccur = 0; |
---|
| 2199 | int *varOccur, *varCost; |
---|
| 2200 | mdd_t *var, *varNot, *pcFunc, *ncFunc; |
---|
| 2201 | int tieCount = 0; |
---|
| 2202 | |
---|
| 2203 | assert(array_n(delta) > 0); |
---|
| 2204 | |
---|
| 2205 | if (splitMethod == 0) { |
---|
| 2206 | bestVar = -1; |
---|
| 2207 | bestComp = -1; |
---|
| 2208 | nFuncs = array_n(delta); |
---|
| 2209 | nVars = info->nVars; |
---|
| 2210 | varOccur = ALLOC(int, nVars); |
---|
| 2211 | memset(varOccur, 0, sizeof(int) * nVars); |
---|
| 2212 | varCost = NIL(int); |
---|
| 2213 | for (i = 0; i < nFuncs; i++) { |
---|
| 2214 | comp = array_fetch(ImgComponent_t *, delta, i); |
---|
| 2215 | for (j = 0; j < nVars; j++) { |
---|
| 2216 | if (comp->support[j]) |
---|
| 2217 | varOccur[j]++; |
---|
| 2218 | } |
---|
| 2219 | } |
---|
| 2220 | switch (split) { |
---|
| 2221 | case 0: /* largest support */ |
---|
| 2222 | for (i = 0; i < nVars; i++) { |
---|
| 2223 | if (varOccur[i] == 0) |
---|
| 2224 | continue; |
---|
| 2225 | if (st_lookup(info->quantifyVarsTable, (char *)(long)i, NIL(char *))) |
---|
| 2226 | continue; |
---|
| 2227 | if (info->intermediateVarsTable && |
---|
| 2228 | st_lookup(info->intermediateVarsTable, (char *)(long)i, |
---|
| 2229 | NIL(char *))) { |
---|
| 2230 | continue; |
---|
| 2231 | } |
---|
| 2232 | if (bestVar == -1 || varOccur[i] > bestOccur) { |
---|
| 2233 | bestVar = i; |
---|
| 2234 | bestOccur = varOccur[i]; |
---|
| 2235 | tieCount = 1; |
---|
| 2236 | } else if (varOccur[i] == bestOccur) { |
---|
| 2237 | tieCount++; |
---|
| 2238 | if (info->option->tieBreakMode == 0 && |
---|
| 2239 | bdd_get_level_from_id(info->manager, i) < |
---|
| 2240 | bdd_get_level_from_id(info->manager, bestVar)) { |
---|
| 2241 | bestVar = i; |
---|
| 2242 | } |
---|
| 2243 | } |
---|
| 2244 | } |
---|
| 2245 | |
---|
| 2246 | if (info->option->tieBreakMode == 1 && tieCount > 1) { |
---|
| 2247 | bestCost = IMG_TF_MAX_INT; |
---|
| 2248 | for (i = bestVar; i < nVars; i++) { |
---|
| 2249 | if (varOccur[i] != bestOccur) |
---|
| 2250 | continue; |
---|
| 2251 | if (st_lookup(info->quantifyVarsTable, (char *)(long)i, NIL(char *))) |
---|
| 2252 | continue; |
---|
| 2253 | if (info->intermediateVarsTable && |
---|
| 2254 | st_lookup(info->intermediateVarsTable, (char *)(long)i, |
---|
| 2255 | NIL(char *))) { |
---|
| 2256 | continue; |
---|
| 2257 | } |
---|
| 2258 | var = bdd_var_with_index(info->manager, i); |
---|
| 2259 | newCost = 0; |
---|
| 2260 | for (j = 0; j < array_n(delta); j++) { |
---|
| 2261 | comp = array_fetch(ImgComponent_t *, delta, j); |
---|
| 2262 | newCost += bdd_estimate_cofactor(comp->func, var, 1); |
---|
| 2263 | newCost += bdd_estimate_cofactor(comp->func, var, 0); |
---|
| 2264 | } |
---|
| 2265 | mdd_free(var); |
---|
| 2266 | |
---|
| 2267 | if (newCost < bestCost) { |
---|
| 2268 | bestVar = i; |
---|
| 2269 | bestCost = newCost; |
---|
| 2270 | } else if (newCost == bestCost) { |
---|
| 2271 | if (bdd_get_level_from_id(info->manager, i) < |
---|
| 2272 | bdd_get_level_from_id(info->manager, bestVar)) { |
---|
| 2273 | bestVar = i; |
---|
| 2274 | } |
---|
| 2275 | } |
---|
| 2276 | } |
---|
| 2277 | } |
---|
| 2278 | break; |
---|
| 2279 | case 1: /* smallest support after splitting */ |
---|
| 2280 | /* Find the variable which makes the smallest support after splitting */ |
---|
| 2281 | bestCost = IMG_TF_MAX_INT; |
---|
| 2282 | varCost = ALLOC(int, nVars); |
---|
| 2283 | memset(varCost, 0, sizeof(int) * nVars); |
---|
| 2284 | for (i = 0; i < nVars; i++) { |
---|
| 2285 | if (varOccur[i] == 0) |
---|
| 2286 | continue; |
---|
| 2287 | if (st_lookup(info->quantifyVarsTable, (char *)(long)i, NIL(char *))) |
---|
| 2288 | continue; |
---|
| 2289 | if (info->intermediateVarsTable && |
---|
| 2290 | st_lookup(info->intermediateVarsTable, (char *)(long)i, |
---|
| 2291 | NIL(char *))) { |
---|
| 2292 | continue; |
---|
| 2293 | } |
---|
| 2294 | var = bdd_var_with_index(info->manager, i); |
---|
| 2295 | varNot = mdd_not(var); |
---|
| 2296 | for (j = 0; j < array_n(delta); j++) { |
---|
| 2297 | comp = array_fetch(ImgComponent_t *, delta, j); |
---|
| 2298 | pcFunc = bdd_cofactor(comp->func, var); |
---|
| 2299 | varCost[i] += ImgCountBddSupports(pcFunc); |
---|
| 2300 | mdd_free(pcFunc); |
---|
| 2301 | ncFunc = bdd_cofactor(comp->func, varNot); |
---|
| 2302 | varCost[i] += ImgCountBddSupports(ncFunc); |
---|
| 2303 | mdd_free(ncFunc); |
---|
| 2304 | } |
---|
| 2305 | mdd_free(var); |
---|
| 2306 | mdd_free(varNot); |
---|
| 2307 | |
---|
| 2308 | if (varCost[i] < bestCost) { |
---|
| 2309 | bestCost = varCost[i]; |
---|
| 2310 | bestVar = i; |
---|
| 2311 | } else if (varCost[i] == bestCost) { |
---|
| 2312 | if (varOccur[i] < varOccur[bestVar]) { |
---|
| 2313 | bestVar = i; |
---|
| 2314 | } else if (varOccur[i] == varOccur[bestVar]) { |
---|
| 2315 | if (bdd_get_level_from_id(info->manager, i) < |
---|
| 2316 | bdd_get_level_from_id(info->manager, bestVar)) { |
---|
| 2317 | bestVar = i; |
---|
| 2318 | } |
---|
| 2319 | } |
---|
| 2320 | } |
---|
| 2321 | } |
---|
| 2322 | break; |
---|
| 2323 | case 2: /* smallest BDD size after splitting */ |
---|
| 2324 | /* Find the variable which makes the smallest BDDs of all functions |
---|
| 2325 | after splitting */ |
---|
| 2326 | bestCost = IMG_TF_MAX_INT; |
---|
| 2327 | varCost = ALLOC(int, nVars); |
---|
| 2328 | memset(varCost, 0, sizeof(int) * nVars); |
---|
| 2329 | for (i = 0; i < nVars; i++) { |
---|
| 2330 | if (varOccur[i] == 0) |
---|
| 2331 | continue; |
---|
| 2332 | if (st_lookup(info->quantifyVarsTable, (char *)(long)i, NIL(char *))) |
---|
| 2333 | continue; |
---|
| 2334 | if (info->intermediateVarsTable && |
---|
| 2335 | st_lookup(info->intermediateVarsTable, (char *)(long)i, |
---|
| 2336 | NIL(char *))) { |
---|
| 2337 | continue; |
---|
| 2338 | } |
---|
| 2339 | var = bdd_var_with_index(info->manager, i); |
---|
| 2340 | for (j = 0; j < array_n(delta); j++) { |
---|
| 2341 | comp = array_fetch(ImgComponent_t *, delta, j); |
---|
| 2342 | varCost[i] += bdd_estimate_cofactor(comp->func, var, 1); |
---|
| 2343 | varCost[i] += bdd_estimate_cofactor(comp->func, var, 0); |
---|
| 2344 | } |
---|
| 2345 | mdd_free(var); |
---|
| 2346 | |
---|
| 2347 | if (varCost[i] < bestCost) { |
---|
| 2348 | bestCost = varCost[i]; |
---|
| 2349 | bestVar = i; |
---|
| 2350 | } else if (varCost[i] == bestCost) { |
---|
| 2351 | if (varOccur[i] < varOccur[bestVar]) { |
---|
| 2352 | bestVar = i; |
---|
| 2353 | } else if (varOccur[i] == varOccur[bestVar]) { |
---|
| 2354 | if (bdd_get_level_from_id(info->manager, i) < |
---|
| 2355 | bdd_get_level_from_id(info->manager, bestVar)) { |
---|
| 2356 | bestVar = i; |
---|
| 2357 | } |
---|
| 2358 | } |
---|
| 2359 | } |
---|
| 2360 | } |
---|
| 2361 | break; |
---|
| 2362 | case 3: /* top variable */ |
---|
| 2363 | default: |
---|
| 2364 | for (i = 0; i < nVars; i++) { |
---|
| 2365 | if (varOccur[i] == 0) |
---|
| 2366 | continue; |
---|
| 2367 | if (st_lookup(info->quantifyVarsTable, (char *)(long)i, NIL(char *))) |
---|
| 2368 | continue; |
---|
| 2369 | if (info->intermediateVarsTable && |
---|
| 2370 | st_lookup(info->intermediateVarsTable, (char *)(long)i, |
---|
| 2371 | NIL(char *))) { |
---|
| 2372 | continue; |
---|
| 2373 | } |
---|
| 2374 | if (bestVar == -1) |
---|
| 2375 | bestVar = i; |
---|
| 2376 | else if (bdd_get_level_from_id(info->manager, i) < |
---|
| 2377 | bdd_get_level_from_id(info->manager, bestVar)) { |
---|
| 2378 | bestVar = i; |
---|
| 2379 | } |
---|
| 2380 | } |
---|
| 2381 | } |
---|
| 2382 | FREE(varOccur); |
---|
| 2383 | if (varCost) |
---|
| 2384 | FREE(varCost); |
---|
| 2385 | } else { |
---|
| 2386 | bestComp = -1; |
---|
| 2387 | bestVar = -1; |
---|
| 2388 | switch (split) { |
---|
| 2389 | case 0: /* smallest BDD size */ |
---|
| 2390 | bestCost = IMG_TF_MAX_INT; |
---|
| 2391 | imgComp = ImgComponentAlloc(info); |
---|
| 2392 | imgComp->func = img; |
---|
| 2393 | ImgComponentGetSupport(imgComp); |
---|
| 2394 | for (i = 0; i < array_n(delta); i++) { |
---|
| 2395 | comp = array_fetch(ImgComponent_t *, delta, i); |
---|
| 2396 | if (comp->intermediate) |
---|
| 2397 | continue; |
---|
| 2398 | index = (int)bdd_top_var_id(comp->var); |
---|
| 2399 | if (imgComp->support[index]) { |
---|
| 2400 | newCost = bdd_size(comp->func); |
---|
| 2401 | if (newCost < bestCost) { |
---|
| 2402 | bestComp = i; |
---|
| 2403 | bestCost = newCost; |
---|
| 2404 | } |
---|
| 2405 | } |
---|
| 2406 | } |
---|
| 2407 | imgComp->func = NIL(mdd_t); |
---|
| 2408 | ImgComponentFree(imgComp); |
---|
| 2409 | break; |
---|
| 2410 | case 1: /* largest BDD size */ |
---|
| 2411 | bestCost = 0; |
---|
| 2412 | imgComp = ImgComponentAlloc(info); |
---|
| 2413 | imgComp->func = img; |
---|
| 2414 | ImgComponentGetSupport(imgComp); |
---|
| 2415 | for (i = 0; i < array_n(delta); i++) { |
---|
| 2416 | comp = array_fetch(ImgComponent_t *, delta, i); |
---|
| 2417 | if (comp->intermediate) |
---|
| 2418 | continue; |
---|
| 2419 | index = (int)bdd_top_var_id(comp->var); |
---|
| 2420 | if (imgComp->support[index]) { |
---|
| 2421 | newCost = bdd_size(comp->func); |
---|
| 2422 | if (newCost > bestCost) { |
---|
| 2423 | bestComp = i; |
---|
| 2424 | bestCost = newCost; |
---|
| 2425 | } |
---|
| 2426 | } |
---|
| 2427 | } |
---|
| 2428 | imgComp->func = NIL(mdd_t); |
---|
| 2429 | ImgComponentFree(imgComp); |
---|
| 2430 | break; |
---|
| 2431 | case 2: /* top variable */ |
---|
| 2432 | default: |
---|
| 2433 | for (i = 0; i < array_n(delta); i++) { |
---|
| 2434 | comp = array_fetch(ImgComponent_t *, delta, i); |
---|
| 2435 | if (comp->intermediate) |
---|
| 2436 | continue; |
---|
| 2437 | index = (int)bdd_top_var_id(comp->var); |
---|
| 2438 | if (bestComp == -1 || |
---|
| 2439 | bdd_get_level_from_id(info->manager, index) < |
---|
| 2440 | bdd_get_level_from_id(info->manager, bestVar)) { |
---|
| 2441 | bestVar = index; |
---|
| 2442 | bestComp = i; |
---|
| 2443 | } |
---|
| 2444 | } |
---|
| 2445 | break; |
---|
| 2446 | } |
---|
| 2447 | assert(bestComp != -1); |
---|
| 2448 | } |
---|
| 2449 | |
---|
| 2450 | if (splitMethod == 0) |
---|
| 2451 | return(bestVar); |
---|
| 2452 | else |
---|
| 2453 | return(bestComp); |
---|
| 2454 | } |
---|
| 2455 | |
---|
| 2456 | |
---|
| 2457 | /**Function******************************************************************** |
---|
| 2458 | |
---|
| 2459 | Synopsis [Performs domain cofactoring on a vector and from set with |
---|
| 2460 | respect to a variable.] |
---|
| 2461 | |
---|
| 2462 | Description [Performs domain cofactoring on a vector and from set with |
---|
| 2463 | respect to a variable.] |
---|
| 2464 | |
---|
| 2465 | SideEffects [] |
---|
| 2466 | |
---|
| 2467 | ******************************************************************************/ |
---|
| 2468 | static mdd_t * |
---|
| 2469 | DomainCofactoring(ImgTfmInfo_t *info, array_t *vector, mdd_t *from, |
---|
| 2470 | array_t *relationArray, mdd_t *c, array_t **newVector, |
---|
| 2471 | array_t **newRelationArray, mdd_t **cofactorCube, |
---|
| 2472 | mdd_t **abstractCube) |
---|
| 2473 | { |
---|
| 2474 | mdd_t *res, *tmp; |
---|
| 2475 | ImgComponent_t *comp, *comp1; |
---|
| 2476 | array_t *vector1; |
---|
| 2477 | int i, index, n, pos; |
---|
| 2478 | mdd_t *newFrom, *var, *nsVar; |
---|
| 2479 | mdd_t *cofactor, *abstract, *constIntermediate; |
---|
| 2480 | array_t *tmpRelationArray; |
---|
| 2481 | st_table *equivTable; |
---|
| 2482 | int *ptr, *regularPtr; |
---|
| 2483 | int size; |
---|
| 2484 | |
---|
| 2485 | newFrom = mdd_dup(from); |
---|
| 2486 | vector1 = array_alloc(ImgComponent_t *, 0); |
---|
| 2487 | |
---|
| 2488 | if (relationArray) { |
---|
| 2489 | cofactor = mdd_one(info->manager); |
---|
| 2490 | abstract = mdd_one(info->manager); |
---|
| 2491 | } else { |
---|
| 2492 | cofactor = NIL(mdd_t); |
---|
| 2493 | abstract = NIL(mdd_t); |
---|
| 2494 | } |
---|
| 2495 | |
---|
| 2496 | if (info->nIntermediateVars) { |
---|
| 2497 | size = ImgVectorFunctionSize(vector); |
---|
| 2498 | if (size == array_n(vector)) |
---|
| 2499 | constIntermediate = NIL(mdd_t); |
---|
| 2500 | else |
---|
| 2501 | constIntermediate = mdd_one(info->manager); |
---|
| 2502 | } else |
---|
| 2503 | constIntermediate = NIL(mdd_t); |
---|
| 2504 | |
---|
| 2505 | n = 0; |
---|
| 2506 | equivTable = st_init_table(st_ptrcmp, st_ptrhash); |
---|
| 2507 | index = (int)bdd_top_var_id(c); |
---|
| 2508 | for (i = 0; i < array_n(vector); i++) { |
---|
| 2509 | comp = array_fetch(ImgComponent_t *, vector, i); |
---|
| 2510 | if (comp->support[index]) |
---|
| 2511 | res = bdd_cofactor(comp->func, c); |
---|
| 2512 | else |
---|
| 2513 | res = mdd_dup(comp->func); |
---|
| 2514 | if (bdd_is_tautology(res, 1)) { |
---|
| 2515 | if (comp->intermediate) { |
---|
| 2516 | tmp = constIntermediate; |
---|
| 2517 | constIntermediate = mdd_and(tmp, comp->var, 1, 1); |
---|
| 2518 | mdd_free(tmp); |
---|
| 2519 | mdd_free(res); |
---|
| 2520 | continue; |
---|
| 2521 | } |
---|
| 2522 | tmp = newFrom; |
---|
| 2523 | newFrom = bdd_cofactor(tmp, comp->var); |
---|
| 2524 | mdd_free(tmp); |
---|
| 2525 | mdd_free(res); |
---|
| 2526 | if (relationArray) { |
---|
| 2527 | nsVar = ImgSubstitute(comp->var, info->functionData, Img_D2R_c); |
---|
| 2528 | tmp = abstract; |
---|
| 2529 | abstract = mdd_and(tmp, nsVar, 1, 1); |
---|
| 2530 | mdd_free(tmp); |
---|
| 2531 | mdd_free(nsVar); |
---|
| 2532 | } |
---|
| 2533 | } else if (bdd_is_tautology(res, 0)) { |
---|
| 2534 | if (comp->intermediate) { |
---|
| 2535 | tmp = constIntermediate; |
---|
| 2536 | constIntermediate = mdd_and(tmp, comp->var, 1, 0); |
---|
| 2537 | mdd_free(tmp); |
---|
| 2538 | mdd_free(res); |
---|
| 2539 | continue; |
---|
| 2540 | } |
---|
| 2541 | tmp = newFrom; |
---|
| 2542 | var = mdd_not(comp->var); |
---|
| 2543 | newFrom = bdd_cofactor(tmp, var); |
---|
| 2544 | mdd_free(tmp); |
---|
| 2545 | mdd_free(var); |
---|
| 2546 | mdd_free(res); |
---|
| 2547 | if (relationArray) { |
---|
| 2548 | nsVar = ImgSubstitute(comp->var, info->functionData, Img_D2R_c); |
---|
| 2549 | tmp = abstract; |
---|
| 2550 | abstract = mdd_and(tmp, nsVar, 1, 1); |
---|
| 2551 | mdd_free(tmp); |
---|
| 2552 | mdd_free(nsVar); |
---|
| 2553 | } |
---|
| 2554 | } else { |
---|
| 2555 | if (comp->intermediate) { |
---|
| 2556 | comp1 = ImgComponentAlloc(info); |
---|
| 2557 | comp1->var = mdd_dup(comp->var); |
---|
| 2558 | comp1->func = res; |
---|
| 2559 | if (mdd_equal(res, comp->func)) |
---|
| 2560 | ImgSupportCopy(info, comp1->support, comp->support); |
---|
| 2561 | else |
---|
| 2562 | ImgComponentGetSupport(comp1); |
---|
| 2563 | comp1->intermediate = 1; |
---|
| 2564 | array_insert_last(ImgComponent_t *, vector1, comp1); |
---|
| 2565 | n++; |
---|
| 2566 | continue; |
---|
| 2567 | } |
---|
| 2568 | ptr = (int *)bdd_pointer(res); |
---|
| 2569 | regularPtr = (int *)((unsigned long)ptr & ~01); |
---|
| 2570 | if (st_lookup_int(equivTable, (char *)regularPtr, &pos)) { |
---|
| 2571 | comp1 = array_fetch(ImgComponent_t *, vector1, pos); |
---|
| 2572 | if (mdd_equal(res, comp1->func)) { |
---|
| 2573 | tmp = newFrom; |
---|
| 2574 | newFrom = bdd_compose(tmp, comp->var, comp1->var); |
---|
| 2575 | mdd_free(tmp); |
---|
| 2576 | } else { |
---|
| 2577 | tmp = newFrom; |
---|
| 2578 | var = mdd_not(comp1->var); |
---|
| 2579 | newFrom = bdd_compose(tmp, comp->var, var); |
---|
| 2580 | mdd_free(tmp); |
---|
| 2581 | mdd_free(var); |
---|
| 2582 | } |
---|
| 2583 | mdd_free(res); |
---|
| 2584 | if (abstract) { |
---|
| 2585 | nsVar = ImgSubstitute(comp->var, info->functionData, Img_D2R_c); |
---|
| 2586 | tmp = abstract; |
---|
| 2587 | abstract = mdd_and(tmp, nsVar, 1, 1); |
---|
| 2588 | mdd_free(tmp); |
---|
| 2589 | mdd_free(nsVar); |
---|
| 2590 | } |
---|
| 2591 | } else { |
---|
| 2592 | comp1 = ImgComponentAlloc(info); |
---|
| 2593 | comp1->var = mdd_dup(comp->var); |
---|
| 2594 | comp1->func = res; |
---|
| 2595 | if (mdd_equal(res, comp->func)) |
---|
| 2596 | ImgSupportCopy(info, comp1->support, comp->support); |
---|
| 2597 | else |
---|
| 2598 | ImgComponentGetSupport(comp1); |
---|
| 2599 | array_insert_last(ImgComponent_t *, vector1, comp1); |
---|
| 2600 | st_insert(equivTable, (char *)regularPtr, (char *)(long)n); |
---|
| 2601 | n++; |
---|
| 2602 | } |
---|
| 2603 | } |
---|
| 2604 | } |
---|
| 2605 | st_free_table(equivTable); |
---|
| 2606 | |
---|
| 2607 | if (constIntermediate) { |
---|
| 2608 | if (!bdd_is_tautology(constIntermediate, 1)) { |
---|
| 2609 | mdd_t *tmpCofactor, *tmpAbstract; |
---|
| 2610 | |
---|
| 2611 | if (relationArray) { |
---|
| 2612 | vector1 = ImgComposeConstIntermediateVars(info, vector1, |
---|
| 2613 | constIntermediate, |
---|
| 2614 | &tmpCofactor, &tmpAbstract, |
---|
| 2615 | NIL(mdd_t *), &newFrom); |
---|
| 2616 | if (!bdd_is_tautology(tmpCofactor, 1)) { |
---|
| 2617 | tmp = cofactor; |
---|
| 2618 | cofactor = mdd_and(tmp, tmpCofactor, 1, 1); |
---|
| 2619 | mdd_free(tmp); |
---|
| 2620 | } |
---|
| 2621 | mdd_free(tmpCofactor); |
---|
| 2622 | if (!bdd_is_tautology(tmpAbstract, 1)) { |
---|
| 2623 | tmp = abstract; |
---|
| 2624 | abstract = mdd_and(tmp, tmpAbstract, 1, 1); |
---|
| 2625 | mdd_free(tmp); |
---|
| 2626 | } |
---|
| 2627 | mdd_free(tmpAbstract); |
---|
| 2628 | tmp = cofactor; |
---|
| 2629 | cofactor = mdd_and(tmp, constIntermediate, 1, 1); |
---|
| 2630 | mdd_free(tmp); |
---|
| 2631 | } else { |
---|
| 2632 | vector1 = ImgComposeConstIntermediateVars(info, vector1, |
---|
| 2633 | constIntermediate, |
---|
| 2634 | NIL(mdd_t *), NIL(mdd_t *), |
---|
| 2635 | NIL(mdd_t *), &newFrom); |
---|
| 2636 | } |
---|
| 2637 | } |
---|
| 2638 | mdd_free(constIntermediate); |
---|
| 2639 | } |
---|
| 2640 | |
---|
| 2641 | *newVector = vector1; |
---|
| 2642 | |
---|
| 2643 | if (relationArray) { |
---|
| 2644 | if (newRelationArray) |
---|
| 2645 | *newRelationArray = relationArray; |
---|
| 2646 | if (cofactorCube && abstractCube) { |
---|
| 2647 | if (cofactor) { |
---|
| 2648 | if (bdd_is_tautology(cofactor, 1)) { |
---|
| 2649 | mdd_free(cofactor); |
---|
| 2650 | *cofactorCube = mdd_dup(c); |
---|
| 2651 | } else { |
---|
| 2652 | *cofactorCube = mdd_and(cofactor, c, 1, 1); |
---|
| 2653 | mdd_free(cofactor); |
---|
| 2654 | } |
---|
| 2655 | } |
---|
| 2656 | if (abstract) |
---|
| 2657 | *abstractCube = abstract; |
---|
| 2658 | } else { |
---|
| 2659 | if (bdd_is_tautology(cofactor, 1)) { |
---|
| 2660 | *newRelationArray = ImgGetCofactoredRelationArray(relationArray, c); |
---|
| 2661 | mdd_free(cofactor); |
---|
| 2662 | } else { |
---|
| 2663 | tmp = cofactor; |
---|
| 2664 | cofactor = mdd_and(tmp, c, 1, 1); |
---|
| 2665 | mdd_free(tmp); |
---|
| 2666 | *newRelationArray = ImgGetCofactoredRelationArray(relationArray, |
---|
| 2667 | cofactor); |
---|
| 2668 | mdd_free(cofactor); |
---|
| 2669 | } |
---|
| 2670 | if (bdd_is_tautology(abstract, 1)) |
---|
| 2671 | mdd_free(abstract); |
---|
| 2672 | else { |
---|
| 2673 | tmpRelationArray = *newRelationArray; |
---|
| 2674 | *newRelationArray = ImgGetAbstractedRelationArray(info->manager, |
---|
| 2675 | tmpRelationArray, |
---|
| 2676 | abstract); |
---|
| 2677 | mdd_free(abstract); |
---|
| 2678 | if (tmpRelationArray != relationArray) |
---|
| 2679 | mdd_array_free(tmpRelationArray); |
---|
| 2680 | } |
---|
| 2681 | } |
---|
| 2682 | } else |
---|
| 2683 | *newRelationArray = NIL(array_t); |
---|
| 2684 | |
---|
| 2685 | return(newFrom); |
---|
| 2686 | } |
---|
| 2687 | |
---|
| 2688 | |
---|
| 2689 | /**Function******************************************************************** |
---|
| 2690 | |
---|
| 2691 | Synopsis [Checks sanity of a vector for preimage.] |
---|
| 2692 | |
---|
| 2693 | Description [Checks sanity of a vector for preimage.] |
---|
| 2694 | |
---|
| 2695 | SideEffects [] |
---|
| 2696 | |
---|
| 2697 | ******************************************************************************/ |
---|
| 2698 | static int |
---|
| 2699 | CheckPreImageVector(ImgTfmInfo_t *info, array_t *vector, mdd_t *image) |
---|
| 2700 | { |
---|
| 2701 | ImgComponent_t *comp, *imgComp; |
---|
| 2702 | int i, id, size, status; |
---|
| 2703 | |
---|
| 2704 | status = 1; |
---|
| 2705 | if (info->nIntermediateVars) |
---|
| 2706 | size = ImgVectorFunctionSize(vector); |
---|
| 2707 | else |
---|
| 2708 | size = array_n(vector); |
---|
| 2709 | if (size != mdd_get_number_of_bdd_support(info->manager, image)) { |
---|
| 2710 | fprintf(vis_stderr, |
---|
| 2711 | "** tfm error: function vector length is different. (%d != %d)\n", |
---|
| 2712 | size, mdd_get_number_of_bdd_support(info->manager, image)); |
---|
| 2713 | status = 0; |
---|
| 2714 | } |
---|
| 2715 | |
---|
| 2716 | imgComp = ImgComponentAlloc(info); |
---|
| 2717 | imgComp->func = image; |
---|
| 2718 | ImgComponentGetSupport(imgComp); |
---|
| 2719 | for (i = 0; i < array_n(vector); i++) { |
---|
| 2720 | comp = array_fetch(ImgComponent_t *, vector, i); |
---|
| 2721 | id = (int)bdd_top_var_id(comp->var); |
---|
| 2722 | if (comp->intermediate) |
---|
| 2723 | imgComp->support[id] = 2; |
---|
| 2724 | else if (imgComp->support[id] == 0) { |
---|
| 2725 | fprintf(vis_stderr, |
---|
| 2726 | "** tfm error: variable index[%d] is not in constraint\n", id); |
---|
| 2727 | status = 0; |
---|
| 2728 | } else |
---|
| 2729 | imgComp->support[id] = 2; |
---|
| 2730 | } |
---|
| 2731 | for (i = 0; i < info->nVars; i++) { |
---|
| 2732 | if (imgComp->support[i] == 1) { |
---|
| 2733 | fprintf(vis_stderr, |
---|
| 2734 | "** tfm error: variable index[%d] is not in function vector\n", i); |
---|
| 2735 | status = 0; |
---|
| 2736 | } |
---|
| 2737 | } |
---|
| 2738 | imgComp->func = NIL(mdd_t); |
---|
| 2739 | ImgComponentFree(imgComp); |
---|
| 2740 | return(status); |
---|
| 2741 | } |
---|