| 1 | /**CFile*********************************************************************** |
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| 2 | |
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| 3 | FileName [puresatIPRefine.c] |
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| 4 | |
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| 5 | PackageName [puresat] |
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| 6 | |
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| 7 | Synopsis [Abstraction refinement for large scale invariant checking.] |
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| 8 | |
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| 9 | Description [This file contains the functions to check invariant properties |
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| 10 | by the PureSAT abstraction refinement algorithm, which is entirely based on |
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| 11 | SAT solver, the input of which could be either CNF or AIG. It has several |
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| 12 | parts: |
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| 13 | |
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| 14 | * Localization-reduction base Abstraction |
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| 15 | * K-induction or interpolation to prove the truth of a property |
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| 16 | * Bounded Model Checking to find bugs |
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| 17 | * Incremental concretization based methods to verify abstract bugs |
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| 18 | * Incremental SAT solver to improve efficiency |
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| 19 | * UNSAT proof based method to obtain refinement |
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| 20 | * AROSAT to bring in only necessary latches into unsat proofs |
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| 21 | * Bridge abstraction to get compact coarse refinement |
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| 22 | * Refinement minization to guarrantee minimal refinements |
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| 23 | * Unsat proof-based refinement minimization to eliminate multiple candidate |
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| 24 | by on SAT test |
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| 25 | * Refinement prediction to decrease the number of refinement iterations |
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| 26 | * Dynamic switching to redistribute computional resources to improve |
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| 27 | efficiency |
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| 28 | |
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| 29 | For more information, please check the BMC'03, ICCAD'04, STTT'05 and TACAS'05 |
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| 30 | paper of Li et al., "A satisfiability-based appraoch to abstraction |
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| 31 | refinement in model checking", " Abstraction in symbolic model checking |
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| 32 | using satisfiability as the only decision procedure", "Efficient computation |
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| 33 | of small abstraction refinements", and "Efficient abstraction refinement in |
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| 34 | interpolation-based unbounded model checking"] |
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| 35 | |
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| 36 | Author [Bing Li] |
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| 37 | |
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| 38 | Copyright [Copyright (c) 2004 The Regents of the Univ. of Colorado. |
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| 39 | All rights reserved. |
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| 40 | |
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| 41 | Permission is hereby granted, without written agreement and without |
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| 42 | license or royalty fees, to use, copy, modify, and distribute this |
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| 43 | software and its documentation for any purpose, provided that the |
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| 44 | above copyright notice and the following two paragraphs appear in |
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| 45 | all copies of this software.] |
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| 46 | |
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| 47 | ******************************************************************************/ |
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| 48 | #include "puresatInt.h" |
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| 49 | |
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| 50 | |
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| 51 | /*---------------------------------------------------------------------------*/ |
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| 52 | /* Constant declarations */ |
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| 53 | /*---------------------------------------------------------------------------*/ |
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| 54 | |
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| 55 | /*---------------------------------------------------------------------------*/ |
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| 56 | /* Structure declarations */ |
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| 57 | /*---------------------------------------------------------------------------*/ |
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| 58 | |
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| 59 | /*---------------------------------------------------------------------------*/ |
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| 60 | /* Type declarations */ |
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| 61 | /*---------------------------------------------------------------------------*/ |
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| 62 | |
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| 63 | /*---------------------------------------------------------------------------*/ |
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| 64 | /* Variable declarations */ |
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| 65 | /*---------------------------------------------------------------------------*/ |
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| 66 | |
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| 67 | /*---------------------------------------------------------------------------*/ |
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| 68 | /* Macro declarations */ |
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| 69 | /*---------------------------------------------------------------------------*/ |
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| 70 | |
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| 71 | /**AutomaticStart*************************************************************/ |
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| 72 | |
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| 73 | /*---------------------------------------------------------------------------*/ |
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| 74 | /* Static function prototypes */ |
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| 75 | /*---------------------------------------------------------------------------*/ |
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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 | /* Definition of exported functions */ |
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| 81 | /*---------------------------------------------------------------------------*/ |
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| 82 | |
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| 83 | /**Function******************************************************************** |
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| 84 | |
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| 85 | Synopsis [Generate sufficient set from unsat proof] |
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| 86 | |
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| 87 | Description [] |
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| 88 | |
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| 89 | SideEffects [] |
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| 90 | |
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| 91 | SeeAlso [] |
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| 92 | |
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| 93 | ******************************************************************************/ |
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| 94 | |
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| 95 | #if UNSATCORE |
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| 96 | void PureSat_GetSufAbsFromCoreRecur(mAig_Manager_t *manager, |
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| 97 | satManager_t * cm, |
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| 98 | RTnode_t RTnode, |
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| 99 | st_table *ctTable, |
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| 100 | st_table *refineTable, |
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| 101 | FILE * fp) |
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| 102 | #else |
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| 103 | void PureSat_GetSufAbsFromCoreRecur(mAig_Manager_t *manager, |
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| 104 | satManager_t * cm, |
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| 105 | RTnode_t RTnode, |
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| 106 | st_table *ctTable, |
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| 107 | st_table *refineTable) |
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| 108 | #endif |
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| 109 | { |
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| 110 | int i,ct; |
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| 111 | bAigTimeFrame_t *tf = manager->timeframeWOI; |
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| 112 | char *name; |
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| 113 | bAigEdge_t v,*lp; |
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| 114 | st_table *table; |
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| 115 | st_generator *stgen; |
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| 116 | RTManager_t * rm = cm->rm; |
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| 117 | |
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| 118 | if(RT_flag(RTnode)&RT_VisitedMask) |
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| 119 | return; |
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| 120 | |
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| 121 | RT_flag(RTnode) |= RT_VisitedMask; |
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| 122 | /*leaf*/ |
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| 123 | if(RT_pivot(RTnode)==0){ |
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| 124 | #if DBG |
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| 125 | assert(RT_oriClsIdx(RTnode)==0); |
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| 126 | #endif |
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| 127 | if(RT_oriClsIdx(RTnode)!=0) |
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| 128 | lp = (long*)SATfirstLit(RT_oriClsIdx(RTnode)); |
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| 129 | else |
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| 130 | |
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| 131 | lp = RT_formula(RTnode) + cm->rm->fArray; |
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| 132 | for(i=0;i<RT_fSize(RTnode);i++,lp++){ |
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| 133 | if(RT_oriClsIdx(RTnode)!=0) |
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| 134 | v = SATgetNode(*lp); |
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| 135 | else |
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| 136 | v = *lp; |
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| 137 | if(*lp<0) |
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| 138 | continue; |
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| 139 | |
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| 140 | #if UNSATCORE |
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| 141 | v = SATnormalNode(v); |
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| 142 | fprintf(fp,"%d_%d ",v,SATclass(v)); |
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| 143 | if(SATflags(v)&DummyMask) |
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| 144 | fprintf(fp,"DM "); |
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| 145 | if(SATflags(v)&VisibleVarMask) |
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| 146 | fprintf(fp,"Visible "); |
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| 147 | else |
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| 148 | if(SATflags(v)&StateBitMask) |
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| 149 | fprintf(fp, "InvSV "); |
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| 150 | |
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| 151 | #endif |
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| 152 | v = SATnormalNode(v); |
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| 153 | if((SATflags(v)&VisibleVarMask)){ |
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| 154 | |
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| 155 | if(SATclass(v)==0){ |
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| 156 | if(!st_lookup(tf->idx2name,(char*)v,&name)&& |
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| 157 | !st_lookup(tf->MultiLatchTable,(char*)v,&table)) |
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| 158 | continue; |
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| 159 | } |
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| 160 | #if 1 |
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| 161 | /* at least 2 times to be choosen as a candidate*/ |
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| 162 | if(st_lookup(ctTable,(char*)v,&ct)){ |
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| 163 | if(ct<0) |
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| 164 | continue; |
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| 165 | if(ct>=1){ |
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| 166 | |
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| 167 | if(!st_lookup(tf->MultiLatchTable,(char*)v,&table)){ |
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| 168 | int retVal = st_lookup(tf->idx2name,(char*)v,&name); |
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| 169 | assert(retVal); |
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| 170 | st_insert(refineTable,(char*)name,(char*)0); |
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| 171 | st_insert(ctTable,(char*)v,(char*)-1); |
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| 172 | |
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| 173 | } |
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| 174 | else{ |
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| 175 | #ifdef TIMEFRAME_VERIFY_ |
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| 176 | fprintf(vis_stdout,"%d is in MultiLatchTable: ",v); |
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| 177 | #endif |
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| 178 | st_foreach_item(table,stgen,(char**)&name, |
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| 179 | NIL(char*)){ |
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| 180 | #ifdef TIMEFRAME_VERIFY_ |
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| 181 | fprintf(vis_stdout,"%s ",name); |
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| 182 | #endif |
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| 183 | st_insert(refineTable,(char*)name,(char*)0); |
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| 184 | } |
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| 185 | #ifdef TIMEFRAME_VERIFY_ |
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| 186 | fprintf(vis_stdout,"\n"); |
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| 187 | #endif |
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| 188 | st_insert(ctTable,(char*)v,(char*)-1); |
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| 189 | } |
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| 190 | } |
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| 191 | } |
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| 192 | else{ |
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| 193 | ct=1; |
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| 194 | st_insert(ctTable,(char*)v,(char*)(long)ct); |
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| 195 | } |
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| 196 | #else |
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| 197 | retVal = st_lookup(tf->idx2name,(char*)v,(char**)&name); |
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| 198 | assert(retVal); |
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| 199 | st_insert(refineTable,(char*)name,(char*)0); |
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| 200 | |
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| 201 | #endif |
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| 202 | }/* if(SATflags(v)&StateBitMask){*/ |
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| 203 | } |
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| 204 | #if UNSATCORE |
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| 205 | fprintf(fp,"0\n"); |
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| 206 | #endif |
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| 207 | } |
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| 208 | /*non leaf*/ |
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| 209 | else{ |
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| 210 | assert(RT_left(RTnode)!=RT_NULL&&RT_right(RTnode)!=RT_NULL); |
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| 211 | #if UNSATCORE |
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| 212 | PureSat_GetSufAbsFromCoreRecur(manager,cm,RT_left(RTnode), |
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| 213 | ctTable,refineTable,fp); |
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| 214 | PureSat_GetSufAbsFromCoreRecur(manager,cm,RT_right(RTnode), |
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| 215 | ctTable,refineTable,fp); |
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| 216 | #else |
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| 217 | PureSat_GetSufAbsFromCoreRecur(manager,cm,RT_left(RTnode), |
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| 218 | ctTable,refineTable); |
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| 219 | PureSat_GetSufAbsFromCoreRecur(manager,cm,RT_right(RTnode), |
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| 220 | ctTable,refineTable); |
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| 221 | #endif |
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| 222 | } |
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| 223 | return; |
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| 224 | } |
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| 225 | |
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| 226 | /**Function******************************************************************** |
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| 227 | |
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| 228 | Synopsis [Generate sufficient set from unsat proof by bridge abstraction] |
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| 229 | |
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| 230 | Description [] |
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| 231 | |
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| 232 | SideEffects [] |
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| 233 | |
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| 234 | SeeAlso [] |
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| 235 | |
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| 236 | ******************************************************************************/ |
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| 237 | |
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| 238 | //new pick latch |
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| 239 | #if UNSATCORE |
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| 240 | void PureSat_GetSufAbsFromCoreRecur_2side(mAig_Manager_t *manager, |
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| 241 | satManager_t * cm, |
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| 242 | RTnode_t RTnode, |
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| 243 | st_table *ctTable, |
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| 244 | st_table *refineTable, |
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| 245 | st_table *SufNameTable, |
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| 246 | FILE * fp) |
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| 247 | #else |
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| 248 | void PureSat_GetSufAbsFromCoreRecur_2side(mAig_Manager_t *manager, |
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| 249 | satManager_t * cm, |
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| 250 | RTnode_t RTnode, |
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| 251 | st_table *ctTable, |
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| 252 | st_table *refineTable, |
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| 253 | st_table *SufNameTable) |
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| 254 | #endif |
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| 255 | { |
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| 256 | int i,j,find,find1,times; |
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| 257 | bAigTimeFrame_t *tf = manager->timeframeWOI; |
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| 258 | char *name,*name1; |
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| 259 | bAigEdge_t v,v1,*lp,*lp1, *lp2, left,right; |
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| 260 | st_table *table; |
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| 261 | st_generator *stgen; |
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| 262 | RTManager_t * rm = cm->rm; |
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| 263 | long maxNode; |
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| 264 | |
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| 265 | if(RT_flag(RTnode)&RT_VisitedMask) |
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| 266 | return; |
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| 267 | |
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| 268 | RT_flag(RTnode) |= RT_VisitedMask; |
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| 269 | |
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| 270 | if(RT_pivot(RTnode)==0){ |
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| 271 | #if DBG |
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| 272 | assert(RT_oriClsIdx(RTnode)==0); |
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| 273 | #endif |
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| 274 | if(RT_oriClsIdx(RTnode)!=0) |
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| 275 | lp = (long*)SATfirstLit(RT_oriClsIdx(RTnode)); |
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| 276 | else |
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| 277 | |
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| 278 | lp = RT_formula(RTnode) + cm->rm->fArray; |
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| 279 | lp1 = lp; |
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| 280 | (cm->line)++; |
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| 281 | for(i=0;i<RT_fSize(RTnode);i++,lp++){ |
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| 282 | if(RT_oriClsIdx(RTnode)!=0) |
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| 283 | v = SATgetNode(*lp); |
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| 284 | else |
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| 285 | v = *lp; |
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| 286 | if(*lp<0) |
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| 287 | continue; |
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| 288 | #if UNSATCORE |
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| 289 | v = SATnormalNode(v); |
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| 290 | fprintf(fp,"%d_%d ",v,SATclass(v)); |
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| 291 | if(SATflags(v)&DummyMask) |
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| 292 | fprintf(fp,"DM "); |
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| 293 | if(SATflags(v)&VisibleVarMask) |
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| 294 | fprintf(fp,"Visible "); |
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| 295 | else |
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| 296 | if(SATflags(v)&StateBitMask) |
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| 297 | fprintf(fp, "InvSV "); |
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| 298 | |
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| 299 | #endif |
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| 300 | v = SATnormalNode(v); |
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| 301 | #if LAI |
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| 302 | /*mark every node in core for latch interface abs*/ |
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| 303 | flags(v) |= VisitedMask; |
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| 304 | #endif |
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| 305 | if(SATflags(v)&VisibleVarMask){ |
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| 306 | if((SATclass(v)==0)&& |
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| 307 | (st_lookup(tf->idx2name,(char*)v,&name)==0)&& |
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| 308 | (st_lookup(tf->MultiLatchTable,(char*)v,&table)==0)) |
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| 309 | continue; |
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| 310 | |
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| 311 | lp2 = lp1; |
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| 312 | left = SATnormalNode(leftChild(v)); |
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| 313 | right = SATnormalNode(rightChild(v)); |
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| 314 | //find largest node |
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| 315 | maxNode = -1; |
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| 316 | for(j=0;j<RT_fSize(RTnode);j++,lp2++){ |
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| 317 | if(RT_oriClsIdx(RTnode)!=0) |
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| 318 | v1 = SATgetNode(*lp2); |
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| 319 | else |
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| 320 | v1 = *lp2; |
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| 321 | if(maxNode < SATnormalNode(v1)) |
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| 322 | maxNode = SATnormalNode(v1); |
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| 323 | } |
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| 324 | if(maxNode == v){ |
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| 325 | #if DBG |
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| 326 | lp2 = lp1; |
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| 327 | for(j=0;j<RT_fSize(RTnode);j++,lp2++){ |
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| 328 | if(RT_oriClsIdx(RTnode)!=0) |
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| 329 | v1 = SATgetNode(*lp2); |
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| 330 | else |
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| 331 | v1 = *lp2; |
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| 332 | if(*lp2<0||SATnormalNode(v1)==v) |
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| 333 | continue; |
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| 334 | assert((SATnormalNode(v1) == SATnormalNode(leftChild(v)))|| |
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| 335 | SATnormalNode(v1) == SATnormalNode(rightChild(v))); |
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| 336 | } |
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| 337 | #endif |
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| 338 | SATflags(v) |= Visited2Mask; /*left side*/ |
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| 339 | } |
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| 340 | else{ |
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| 341 | #if DBG |
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| 342 | lp2 = lp1; |
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| 343 | for(j=0;j<RT_fSize(RTnode);j++,lp2++){ |
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| 344 | if(RT_oriClsIdx(RTnode)!=0) |
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| 345 | v1 = SATgetNode(*lp2); |
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| 346 | else |
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| 347 | v1 = *lp2; |
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| 348 | if(*lp2<0||SATnormalNode(v1)==maxNode) |
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| 349 | continue; |
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| 350 | assert((SATnormalNode(v1) == SATnormalNode(leftChild(maxNode)))|| |
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| 351 | (SATnormalNode(v1) == SATnormalNode(rightChild(maxNode)))); |
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| 352 | } |
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| 353 | #endif |
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| 354 | SATflags(v) |= Visited3Mask; /*right side*/ |
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| 355 | #if THROUGHPICK |
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| 356 | /*pick latch due to split*/ |
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| 357 | if(SATflags(v)&VPGVMask){ |
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| 358 | if(SATclass(maxNode)<=1) |
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| 359 | SATflags(v) |= NewMask; /*the same tf*/ |
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| 360 | else |
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| 361 | SATflags(v) |= Visited4Mask; /* larger tf*/ |
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| 362 | } |
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| 363 | #endif |
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| 364 | } |
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| 365 | |
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| 366 | } |
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| 367 | |
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| 368 | #if THROUGHPICK |
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| 369 | if((SATflags(v)&VisibleVarMask)&& |
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| 370 | (((SATflags(v)&Visited2Mask)&&(SATflags(v)&Visited3Mask))|| |
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| 371 | ((SATflags(v)&Visited4Mask)&&(SATflags(v)&NewMask)))){ |
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| 372 | #else |
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| 373 | if((SATflags(v)&VisibleVarMask)&& |
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| 374 | ((SATflags(v)&Visited2Mask)&&(SATflags(v)&Visited3Mask))){ |
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| 375 | #endif |
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| 376 | times = 1; |
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| 377 | if(!st_lookup(tf->MultiLatchTable,(char*)v,&table)){ |
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| 378 | int retVal = st_lookup(tf->idx2name,(char*)v,&name); |
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| 379 | assert(retVal); |
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| 380 | |
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| 381 | if(st_lookup(refineTable,(char*)name,×)) |
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| 382 | times++; |
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| 383 | st_insert(refineTable,(char*)name,(char*)(long)times); |
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| 384 | } |
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| 385 | |
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| 386 | /*for iden latches, we only add one, which is enough*/ |
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| 387 | else{ |
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| 388 | find = 0; |
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| 389 | find1 = 0; |
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| 390 | st_foreach_item(table,stgen,(char**)&name, |
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| 391 | NIL(char*)){ |
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| 392 | if(st_lookup(refineTable,name,NIL(char*))){ |
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| 393 | find = 1; |
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| 394 | break; |
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| 395 | } |
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| 396 | if(find1==0){ |
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| 397 | if(st_lookup(SufNameTable,name, NIL(char*))){ |
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| 398 | name1 = name; |
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| 399 | find1 = 1; |
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| 400 | } |
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| 401 | } |
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| 402 | } |
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| 403 | if(find==0){ |
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| 404 | times = 1; |
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| 405 | if(st_lookup(refineTable,(char*)name1,×)) |
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| 406 | times++; |
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| 407 | st_insert(refineTable,(char*)name1,(char*)(long)times); |
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| 408 | |
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| 409 | } |
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| 410 | } |
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| 411 | |
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| 412 | |
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| 413 | } |
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| 414 | } |
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| 415 | #if UNSATCORE |
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| 416 | fprintf(fp,"0\n"); |
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| 417 | #endif |
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| 418 | } |
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| 419 | /*non leaf*/ |
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| 420 | else{ |
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| 421 | assert(RT_left(RTnode)!=RT_NULL&&RT_right(RTnode)!=RT_NULL); |
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| 422 | #if UNSATCORE |
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| 423 | PureSat_GetSufAbsFromCoreRecur_2side(manager,cm,RT_left(RTnode), |
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| 424 | ctTable,refineTable,SufNameTable,fp); |
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| 425 | PureSat_GetSufAbsFromCoreRecur_2side(manager,cm,RT_right(RTnode), |
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| 426 | ctTable,refineTable,SufNameTable,fp); |
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| 427 | #else |
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| 428 | PureSat_GetSufAbsFromCoreRecur_2side(manager,cm,RT_left(RTnode), |
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| 429 | ctTable,refineTable,SufNameTable); |
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| 430 | PureSat_GetSufAbsFromCoreRecur_2side(manager,cm,RT_right(RTnode), |
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| 431 | ctTable,refineTable,SufNameTable); |
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| 432 | #endif |
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| 433 | } |
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| 434 | return; |
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| 435 | } |
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| 436 | |
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| 437 | |
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| 438 | |
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| 439 | /**Function******************************************************************** |
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| 440 | |
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| 441 | Synopsis [Generate sufficient set from unsat proof] |
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| 442 | |
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| 443 | Description [] |
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| 444 | |
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| 445 | SideEffects [] |
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| 446 | |
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| 447 | SeeAlso [] |
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| 448 | |
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| 449 | ******************************************************************************/ |
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| 450 | |
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| 451 | array_t * PureSat_GetSufAbsFromCore(Ntk_Network_t *network, |
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| 452 | satManager_t * cm, |
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| 453 | PureSat_Manager_t *pm, |
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| 454 | bAigEdge_t property, |
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| 455 | st_table * SufAbsNameTable) |
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| 456 | { |
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| 457 | array_t * refArray = array_alloc(char *,0); |
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| 458 | char *name; |
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| 459 | st_generator *stgen; |
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| 460 | Ntk_Node_t *latch; |
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| 461 | bAig_Manager_t * manager = Ntk_NetworkReadMAigManager(network); |
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| 462 | st_table * ctTable = st_init_table(st_numcmp,st_numhash); |
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| 463 | st_table * refineTable = st_init_table(strcmp,st_strhash); |
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| 464 | int times; |
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| 465 | #if UNSATCORE |
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| 466 | FILE * fp = fopen("unsatcore.txt","w"); |
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| 467 | #endif |
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| 468 | #if LAI |
|---|
| 469 | st_table * refineTable1 = st_init_table(strcmp,st_strhash); |
|---|
| 470 | |
|---|
| 471 | #endif |
|---|
| 472 | |
|---|
| 473 | |
|---|
| 474 | PureSat_CleanMask(manager,ResetVisited1234NewMask); |
|---|
| 475 | #if UNSATCORE |
|---|
| 476 | fprintf(fp,"p cnf %d line, # nodes:%d\n", |
|---|
| 477 | cm->initNumVariables,cm->nodesArraySize); |
|---|
| 478 | cm->line = 0; |
|---|
| 479 | PureSat_GetSufAbsFromCoreRecur_2side(manager,cm,cm->rm->root, |
|---|
| 480 | ctTable,refineTable,SufAbsNameTable,fp); |
|---|
| 481 | fprintf(fp,"total lines: %d\n",cm->line); |
|---|
| 482 | #else |
|---|
| 483 | PureSat_GetSufAbsFromCoreRecur_2side(manager,cm,cm->rm->root, |
|---|
| 484 | ctTable,refineTable,SufAbsNameTable); |
|---|
| 485 | |
|---|
| 486 | #endif |
|---|
| 487 | PureSat_CleanMask(manager,ResetVisited1234NewMask); |
|---|
| 488 | |
|---|
| 489 | #if LAI |
|---|
| 490 | ResetRTree(cm->rm); |
|---|
| 491 | PureSat_GetLIAForNode(manager,property); |
|---|
| 492 | PureSat_GetSufAbsByLIA(manager,cm,cm->rm->root, |
|---|
| 493 | refineTable1); |
|---|
| 494 | #endif |
|---|
| 495 | |
|---|
| 496 | |
|---|
| 497 | st_foreach_item(refineTable,stgen,&name,×){ |
|---|
| 498 | latch = Ntk_NetworkFindNodeByName(network,name); |
|---|
| 499 | |
|---|
| 500 | if(!st_lookup(pm->vertexTable,(char*)name,NIL(char*))&& |
|---|
| 501 | st_lookup(pm->SufAbsTable, (char*)latch,NIL(char*))){ |
|---|
| 502 | array_insert_last(char *,refArray,name); |
|---|
| 503 | if(pm->verbosity>=2) |
|---|
| 504 | fprintf(vis_stdout,"ref cand:%s %d\n",name,times); |
|---|
| 505 | } |
|---|
| 506 | } |
|---|
| 507 | |
|---|
| 508 | #if LAI |
|---|
| 509 | st_foreach_item(refineTable1,stgen,(char**)&name,NIL(char*)){ |
|---|
| 510 | latch = Ntk_NetworkFindNodeByName(network,name); |
|---|
| 511 | if(!st_lookup(pm->vertexTable,(char*)name,NIL(char*))&& |
|---|
| 512 | st_lookup(pm->CoiTable, (char*)latch,NIL(char*))){ |
|---|
| 513 | if(pm->verbosity>=2) |
|---|
| 514 | fprintf(vis_stdout,"from LIA ref candidate:%s\n",name); |
|---|
| 515 | |
|---|
| 516 | } |
|---|
| 517 | } |
|---|
| 518 | #endif |
|---|
| 519 | |
|---|
| 520 | #if UNSATCORE |
|---|
| 521 | fclose(fp); |
|---|
| 522 | #endif |
|---|
| 523 | |
|---|
| 524 | st_free_table(ctTable); |
|---|
| 525 | st_free_table(refineTable); |
|---|
| 526 | #if LAI |
|---|
| 527 | st_free_table(refineTable1); |
|---|
| 528 | #endif |
|---|
| 529 | return refArray; |
|---|
| 530 | } |
|---|
| 531 | |
|---|
| 532 | |
|---|
| 533 | |
|---|
| 534 | /**Function******************************************************************** |
|---|
| 535 | |
|---|
| 536 | Synopsis [Main procedure of refinement computation] |
|---|
| 537 | |
|---|
| 538 | Description [] |
|---|
| 539 | |
|---|
| 540 | SideEffects [] |
|---|
| 541 | |
|---|
| 542 | SeeAlso [] |
|---|
| 543 | |
|---|
| 544 | ******************************************************************************/ |
|---|
| 545 | |
|---|
| 546 | array_t *PureSat_RefineOnAbs(Ntk_Network_t *network, |
|---|
| 547 | PureSat_Manager_t *pm, |
|---|
| 548 | bAigEdge_t property, |
|---|
| 549 | array_t *previousResultArray, |
|---|
| 550 | int latchThreshHold, |
|---|
| 551 | int * sccArray, |
|---|
| 552 | array_t * sufArray) |
|---|
| 553 | { |
|---|
| 554 | array_t * tmpRef,*tmpRef1,*tmpRef2,*tmpRef3; |
|---|
| 555 | array_t * tmpModel = array_alloc(char *,0),*tmpArray1,*tmpArray2; |
|---|
| 556 | satManager_t *cm; |
|---|
| 557 | mAig_Manager_t * manager = Ntk_NetworkReadMAigManager(network); |
|---|
| 558 | st_table *table; |
|---|
| 559 | char * name; |
|---|
| 560 | int i,j; |
|---|
| 561 | int NumInSecondLevel; |
|---|
| 562 | st_generator *stgen; |
|---|
| 563 | Ntk_Node_t *latch; |
|---|
| 564 | double t1,t2,t3,t4; |
|---|
| 565 | st_table * SufAbsNameTable = st_init_table(strcmp,st_strhash); |
|---|
| 566 | st_table * junkTable; |
|---|
| 567 | int noArosat = 1; |
|---|
| 568 | |
|---|
| 569 | |
|---|
| 570 | tmpRef = array_alloc(char *,0); |
|---|
| 571 | st_foreach_item(pm->SufAbsTable,stgen,&latch,NIL(char*)){ |
|---|
| 572 | name = Ntk_NodeReadName(latch); |
|---|
| 573 | if(st_lookup(pm->vertexTable,name,NIL(char *))) |
|---|
| 574 | array_insert_last(char *,tmpModel,name); |
|---|
| 575 | array_insert_last(char *,tmpRef,name); |
|---|
| 576 | st_insert(SufAbsNameTable,name,(char *)0); |
|---|
| 577 | |
|---|
| 578 | } |
|---|
| 579 | |
|---|
| 580 | t1 = util_cpu_ctime(); |
|---|
| 581 | manager->assertArray = sat_ArrayAlloc(1); |
|---|
| 582 | sat_ArrayInsert(manager->assertArray,manager->InitState); |
|---|
| 583 | cm = PureSat_SatManagerAlloc_WOCOI(manager,pm,property,previousResultArray); |
|---|
| 584 | if(pm->Arosat){ |
|---|
| 585 | cm->option->decisionHeuristic &= RESET_LC; |
|---|
| 586 | cm->option->decisionHeuristic |= DVH_DECISION; |
|---|
| 587 | cm->option->arosat = 1; |
|---|
| 588 | } |
|---|
| 589 | cm->option->coreGeneration = 1; |
|---|
| 590 | cm->option->AbRf = 1; |
|---|
| 591 | cm->property = property; |
|---|
| 592 | cm->option->IP = 1; |
|---|
| 593 | PureSat_CleanMask(manager,ResetVisibleVarMask); |
|---|
| 594 | PuresatMarkVisibleVarWithVPGV(network,tmpRef,pm,0,pm->Length+1); |
|---|
| 595 | array_free(tmpRef); |
|---|
| 596 | t3 = util_cpu_ctime(); |
|---|
| 597 | PureSatPreprocess(network,cm,pm,SufAbsNameTable,pm->Length); |
|---|
| 598 | t4 = util_cpu_ctime(); |
|---|
| 599 | pm->tPro += t4-t3; |
|---|
| 600 | if(pm->verbosity>=2) |
|---|
| 601 | fprintf(vis_stdout,"process time:%g,total:%g\n", |
|---|
| 602 | (double)((t4-t3)/1000.0),pm->tPro/1000); |
|---|
| 603 | |
|---|
| 604 | if(cm->option->arosat){ |
|---|
| 605 | PureSatCreateLayer(network,pm,cm,tmpModel,sufArray); |
|---|
| 606 | cm->Length = pm->Length; |
|---|
| 607 | AS_Main(cm); |
|---|
| 608 | noArosat = 0; |
|---|
| 609 | st_foreach_item(cm->layerTable,stgen,&table,NIL(char*)) |
|---|
| 610 | st_free_table(table); |
|---|
| 611 | st_free_table(cm->layerTable); |
|---|
| 612 | FREE(cm->assignedArray); |
|---|
| 613 | FREE(cm->numArray); |
|---|
| 614 | } |
|---|
| 615 | else |
|---|
| 616 | sat_Main(cm); |
|---|
| 617 | |
|---|
| 618 | manager->NodesArray = cm->nodesArray;; |
|---|
| 619 | assert(cm->status==SAT_UNSAT); |
|---|
| 620 | t3 = util_cpu_ctime(); |
|---|
| 621 | PureSatPostprocess(manager,cm,pm); |
|---|
| 622 | PureSatProcessDummy(manager,cm,cm->rm->root); |
|---|
| 623 | ResetRTree(cm->rm); |
|---|
| 624 | t4 = util_cpu_ctime(); |
|---|
| 625 | pm->tPro += t4-t3; |
|---|
| 626 | if(pm->verbosity>=2) |
|---|
| 627 | fprintf(vis_stdout,"process time:%g,total:%g\n", |
|---|
| 628 | (double)((t4-t3)/1000.0),pm->tPro/1000); |
|---|
| 629 | t2 = util_cpu_ctime(); |
|---|
| 630 | pm->tCoreGen += t2 - t1; |
|---|
| 631 | if(pm->verbosity>=2) |
|---|
| 632 | fprintf(vis_stdout,"time for UNsat core generation:%g,total:%g\n", |
|---|
| 633 | (double)(t2-t1)/1000.0,pm->tCoreGen/1000.0); |
|---|
| 634 | |
|---|
| 635 | t1 = util_cpu_ctime(); |
|---|
| 636 | tmpRef1 = PureSat_GetSufAbsFromCore(network,cm,pm,property,SufAbsNameTable); |
|---|
| 637 | t2 = util_cpu_ctime(); |
|---|
| 638 | |
|---|
| 639 | st_free_table(SufAbsNameTable); |
|---|
| 640 | RT_Free(cm->rm); |
|---|
| 641 | sat_ArrayFree(manager->assertArray); |
|---|
| 642 | PureSat_SatFreeManager(cm); |
|---|
| 643 | |
|---|
| 644 | /*Get suff set*/ |
|---|
| 645 | tmpRef2 = array_alloc(char *,0); |
|---|
| 646 | tmpRef3 = array_alloc(char *,0); |
|---|
| 647 | tmpArray1 = array_alloc(char *,0); |
|---|
| 648 | tmpArray2 = array_alloc(char *,0); |
|---|
| 649 | |
|---|
| 650 | if(noArosat){ |
|---|
| 651 | t1 = util_cpu_ctime(); |
|---|
| 652 | if(array_n(tmpRef1)){ |
|---|
| 653 | tmpRef = PureSatGenerateRCArray_2(network,pm,tmpRef1, |
|---|
| 654 | &NumInSecondLevel); |
|---|
| 655 | array_free(pm->latchArray); |
|---|
| 656 | } |
|---|
| 657 | |
|---|
| 658 | } |
|---|
| 659 | else{ |
|---|
| 660 | if(array_n(tmpRef1)){ |
|---|
| 661 | tmpRef = PureSatGenerateRCArray_2(network,pm,tmpRef1, |
|---|
| 662 | &NumInSecondLevel); |
|---|
| 663 | array_free(pm->latchArray); |
|---|
| 664 | } |
|---|
| 665 | else |
|---|
| 666 | tmpRef = array_alloc(char*,0); |
|---|
| 667 | #if NOREFMIN |
|---|
| 668 | if(pm->verbosity>=1){ |
|---|
| 669 | fprintf(vis_stdout,"\n sufficient refinement candidates from CA\n"); |
|---|
| 670 | arrayForEachItem(char *,tmpRef,i,name) |
|---|
| 671 | fprintf(vis_stdout,"%s\n",name); |
|---|
| 672 | } |
|---|
| 673 | PureSatAddIdenLatchToAbs(network,pm,tmpRef); |
|---|
| 674 | array_free(tmpRef1); |
|---|
| 675 | array_free(tmpModel); |
|---|
| 676 | return tmpRef; |
|---|
| 677 | #endif |
|---|
| 678 | } |
|---|
| 679 | |
|---|
| 680 | |
|---|
| 681 | /*Ref Minimization |
|---|
| 682 | //try all the candidates*/ |
|---|
| 683 | t1 = util_cpu_ctime(); |
|---|
| 684 | |
|---|
| 685 | if(pm->CoreRefMin && array_n(tmpRef)>=5){ |
|---|
| 686 | if(pm->verbosity>=1) |
|---|
| 687 | fprintf(vis_stdout,"Core Ref Min\n"); |
|---|
| 688 | junkTable = st_init_table(strcmp,st_strhash); |
|---|
| 689 | for(i=array_n(tmpRef)-1;i>=0;i--) |
|---|
| 690 | { |
|---|
| 691 | array_t * tmpA; |
|---|
| 692 | name = array_fetch(char *,tmpRef,i); |
|---|
| 693 | if(pm->verbosity>=1) |
|---|
| 694 | fprintf(vis_stdout,"RefMin: testing %s\n",name); |
|---|
| 695 | tmpArray2 = PureSatRemove_char(tmpRef,i); |
|---|
| 696 | if(st_lookup(junkTable,name,NIL(char))){ |
|---|
| 697 | array_free(tmpRef); |
|---|
| 698 | tmpRef = tmpArray2; |
|---|
| 699 | if(pm->verbosity>=1) |
|---|
| 700 | fprintf(vis_stdout,"%s is junk\n",name); |
|---|
| 701 | continue; |
|---|
| 702 | } |
|---|
| 703 | tmpA = array_dup(tmpModel); |
|---|
| 704 | array_append(tmpA,tmpArray2); |
|---|
| 705 | |
|---|
| 706 | t3 = util_cpu_time(); |
|---|
| 707 | tmpArray1 = array_alloc(char*,0); |
|---|
| 708 | arrayForEachItem(char*,tmpA,j,name) |
|---|
| 709 | if(!st_lookup(junkTable,name,NIL(char))) |
|---|
| 710 | array_insert_last(char*,tmpArray1,name); |
|---|
| 711 | array_free(tmpA); |
|---|
| 712 | |
|---|
| 713 | if(!PureSat_ConcretTest_Core(network,pm,tmpArray1,property, |
|---|
| 714 | previousResultArray,junkTable)){ |
|---|
| 715 | /*then the candidate can' be deleted*/ |
|---|
| 716 | t4 = util_cpu_time(); |
|---|
| 717 | if(pm->verbosity>=2) |
|---|
| 718 | fprintf(vis_stdout," %g\n",(t4-t3)/1000); |
|---|
| 719 | array_free(tmpArray2); |
|---|
| 720 | } |
|---|
| 721 | else /*delete it*/ |
|---|
| 722 | { |
|---|
| 723 | t4 = util_cpu_time(); |
|---|
| 724 | if(pm->verbosity>=2) |
|---|
| 725 | fprintf(vis_stdout,"time: %g\n",(t4-t3)/1000); |
|---|
| 726 | array_free(tmpRef); |
|---|
| 727 | tmpRef = tmpArray2; |
|---|
| 728 | } |
|---|
| 729 | array_free(tmpArray1); |
|---|
| 730 | } |
|---|
| 731 | st_free_table(junkTable); |
|---|
| 732 | } |
|---|
| 733 | else{ |
|---|
| 734 | for(i=array_n(tmpRef)-1;i>=0;i--) |
|---|
| 735 | { |
|---|
| 736 | name = array_fetch(char *,tmpRef,i); |
|---|
| 737 | |
|---|
| 738 | if(pm->verbosity>=1) |
|---|
| 739 | fprintf(vis_stdout,"RefMin: testing %s\n",name); |
|---|
| 740 | tmpArray2 = PureSatRemove_char(tmpRef,i); |
|---|
| 741 | tmpArray1 = array_dup(tmpModel); |
|---|
| 742 | array_append(tmpArray1,tmpArray2); |
|---|
| 743 | |
|---|
| 744 | t3 = util_cpu_time(); |
|---|
| 745 | if(!PureSat_ConcretTest(network,pm,tmpArray1,property, |
|---|
| 746 | previousResultArray,0,0,0)){ |
|---|
| 747 | t4 = util_cpu_time(); |
|---|
| 748 | if(pm->verbosity>=2) |
|---|
| 749 | fprintf(vis_stdout," %g\n",(t4-t3)/1000); |
|---|
| 750 | array_free(tmpArray2); |
|---|
| 751 | } |
|---|
| 752 | else /*delete it*/ |
|---|
| 753 | { |
|---|
| 754 | t4 = util_cpu_time(); |
|---|
| 755 | if(pm->verbosity>=2) |
|---|
| 756 | fprintf(vis_stdout,"time: %g\n",(t4-t3)/1000); |
|---|
| 757 | array_free(tmpRef); |
|---|
| 758 | tmpRef = tmpArray2; |
|---|
| 759 | } |
|---|
| 760 | array_free(tmpArray1); |
|---|
| 761 | } |
|---|
| 762 | } |
|---|
| 763 | |
|---|
| 764 | |
|---|
| 765 | t2 = util_cpu_ctime(); |
|---|
| 766 | pm->tRefMin += t2 - t1; |
|---|
| 767 | if(pm->verbosity>=2) |
|---|
| 768 | fprintf(vis_stdout,"\ntime for Ref Min: %g, total:%g\n", |
|---|
| 769 | (t2-t1)/1000,pm->tRefMin/1000); |
|---|
| 770 | if(pm->verbosity>=1){ |
|---|
| 771 | fprintf(vis_stdout,"\n sufficient refinement candidates from CA\n"); |
|---|
| 772 | arrayForEachItem(char *,tmpRef,i,name) |
|---|
| 773 | fprintf(vis_stdout,"%s\n",name); |
|---|
| 774 | } |
|---|
| 775 | PureSatAddIdenLatchToAbs(network,pm,tmpRef); |
|---|
| 776 | array_free(tmpRef1); |
|---|
| 777 | array_free(tmpModel); |
|---|
| 778 | return tmpRef; |
|---|
| 779 | } |
|---|
| 780 | |
|---|
| 781 | |
|---|
| 782 | /**Function******************************************************************** |
|---|
| 783 | |
|---|
| 784 | Synopsis [Refinement procedure without refinement minimization] |
|---|
| 785 | |
|---|
| 786 | Description [] |
|---|
| 787 | |
|---|
| 788 | SideEffects [] |
|---|
| 789 | |
|---|
| 790 | SeeAlso [] |
|---|
| 791 | |
|---|
| 792 | ******************************************************************************/ |
|---|
| 793 | |
|---|
| 794 | |
|---|
| 795 | array_t *PureSat_RefineOnAbs_DA(Ntk_Network_t *network, |
|---|
| 796 | PureSat_Manager_t *pm, |
|---|
| 797 | bAigEdge_t property, |
|---|
| 798 | array_t *previousResultArray, |
|---|
| 799 | int latchThreshHold, |
|---|
| 800 | int * sccArray, |
|---|
| 801 | array_t * sufArray) |
|---|
| 802 | { |
|---|
| 803 | array_t * tmpRef,*tmpRef1,*tmpRef2,*tmpRef3; //= array_alloc(char *,0); |
|---|
| 804 | array_t * tmpModel = array_alloc(char *,0),*tmpArray1,*tmpArray2; |
|---|
| 805 | satManager_t *cm; |
|---|
| 806 | mAig_Manager_t * manager = Ntk_NetworkReadMAigManager(network); |
|---|
| 807 | st_table *table; |
|---|
| 808 | char * name; |
|---|
| 809 | int i; |
|---|
| 810 | int NumInSecondLevel; |
|---|
| 811 | st_generator *stgen; |
|---|
| 812 | Ntk_Node_t *latch; |
|---|
| 813 | double t1,t2,t3,t4; |
|---|
| 814 | st_table * SufAbsNameTable = st_init_table(strcmp,st_strhash); |
|---|
| 815 | int noArosat = 1; |
|---|
| 816 | |
|---|
| 817 | |
|---|
| 818 | tmpRef = array_alloc(char *,0); |
|---|
| 819 | st_foreach_item(pm->SufAbsTable,stgen,&latch,NIL(char*)){ |
|---|
| 820 | name = Ntk_NodeReadName(latch); |
|---|
| 821 | if(st_lookup(pm->vertexTable,name,NIL(char *))) |
|---|
| 822 | array_insert_last(char *,tmpModel,name); |
|---|
| 823 | array_insert_last(char *,tmpRef,name); |
|---|
| 824 | st_insert(SufAbsNameTable,name,(char *)0); |
|---|
| 825 | |
|---|
| 826 | } |
|---|
| 827 | |
|---|
| 828 | t1 = util_cpu_ctime(); |
|---|
| 829 | manager->assertArray = sat_ArrayAlloc(1); |
|---|
| 830 | sat_ArrayInsert(manager->assertArray,manager->InitState); |
|---|
| 831 | cm = PureSat_SatManagerAlloc_WOCOI(manager,pm,property,previousResultArray); |
|---|
| 832 | #if AROSAT |
|---|
| 833 | cm->option->decisionHeuristic &= RESET_LC; |
|---|
| 834 | cm->option->decisionHeuristic |= DVH_DECISION; |
|---|
| 835 | cm->option->arosat = 1; |
|---|
| 836 | #endif |
|---|
| 837 | cm->option->coreGeneration = 1; |
|---|
| 838 | cm->option->AbRf = 1; |
|---|
| 839 | |
|---|
| 840 | cm->option->IP = 1; |
|---|
| 841 | cm->property = property; |
|---|
| 842 | PureSat_CleanMask(manager,ResetVisibleVarMask); |
|---|
| 843 | PuresatMarkVisibleVarWithVPGV(network,tmpRef,pm,0,pm->Length+1); |
|---|
| 844 | array_free(tmpRef); |
|---|
| 845 | t3 = util_cpu_ctime(); |
|---|
| 846 | PureSatPreprocess(network,cm,pm,SufAbsNameTable,pm->Length); |
|---|
| 847 | t4 = util_cpu_ctime(); |
|---|
| 848 | pm->tPro += t4-t3; |
|---|
| 849 | if(pm->verbosity>=2) |
|---|
| 850 | fprintf(vis_stdout,"process time:%g,total:%g\n", |
|---|
| 851 | (double)((t4-t3)/1000.0),pm->tPro/1000); |
|---|
| 852 | #if DBG |
|---|
| 853 | PureSatCheckCoi(manager); |
|---|
| 854 | #endif |
|---|
| 855 | if(cm->option->arosat){ |
|---|
| 856 | PureSatCreateLayer(network,pm,cm,tmpModel,sufArray); |
|---|
| 857 | cm->Length = pm->Length; |
|---|
| 858 | AS_Main(cm); |
|---|
| 859 | noArosat = 0; |
|---|
| 860 | st_foreach_item(cm->layerTable,stgen,&table,NIL(char*)) |
|---|
| 861 | st_free_table(table); |
|---|
| 862 | st_free_table(cm->layerTable); |
|---|
| 863 | FREE(cm->assignedArray); |
|---|
| 864 | FREE(cm->numArray); |
|---|
| 865 | } |
|---|
| 866 | else |
|---|
| 867 | sat_Main(cm); |
|---|
| 868 | manager->NodesArray = cm->nodesArray;; |
|---|
| 869 | assert(cm->status==SAT_UNSAT); |
|---|
| 870 | t3 = util_cpu_ctime(); |
|---|
| 871 | PureSatPostprocess(manager,cm,pm); |
|---|
| 872 | PureSatProcessDummy(manager,cm,cm->rm->root); |
|---|
| 873 | ResetRTree(cm->rm); |
|---|
| 874 | t4 = util_cpu_ctime(); |
|---|
| 875 | pm->tPro += t4-t3; |
|---|
| 876 | if(pm->verbosity>=2) |
|---|
| 877 | fprintf(vis_stdout,"process time:%g,total:%g\n", |
|---|
| 878 | (double)((t4-t3)/1000.0),pm->tPro/1000); |
|---|
| 879 | t2 = util_cpu_ctime(); |
|---|
| 880 | pm->tCoreGen += t2 - t1; |
|---|
| 881 | if(pm->verbosity>=2) |
|---|
| 882 | fprintf(vis_stdout,"time for UNsat core generation:%g,total:%g\n", |
|---|
| 883 | (double)(t2-t1)/1000.0,pm->tCoreGen/1000.0); |
|---|
| 884 | #if DBG |
|---|
| 885 | PureSat_CheckFanoutFanin(manager); |
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| 886 | #endif |
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| 887 | t1 = util_cpu_ctime(); |
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| 888 | tmpRef1 = PureSat_GetSufAbsFromCore(network,cm,pm,property,SufAbsNameTable); |
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| 889 | t2 = util_cpu_ctime(); |
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| 890 | |
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| 891 | st_free_table(SufAbsNameTable); |
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| 892 | RT_Free(cm->rm); |
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| 893 | sat_ArrayFree(manager->assertArray); |
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| 894 | PureSat_SatFreeManager(cm); |
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| 895 | |
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| 896 | /*Get suff set*/ |
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| 897 | |
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| 898 | tmpRef2 = array_alloc(char *,0); |
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| 899 | tmpRef3 = array_alloc(char *,0); |
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| 900 | tmpArray1 = array_alloc(char *,0); |
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| 901 | tmpArray2 = array_alloc(char *,0); |
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| 902 | |
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| 903 | if(noArosat){ |
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| 904 | t1 = util_cpu_ctime(); |
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| 905 | if(array_n(tmpRef1)){ |
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| 906 | tmpRef = PureSatGenerateRCArray_2(network,pm,tmpRef1, |
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| 907 | &NumInSecondLevel); |
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| 908 | |
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| 909 | array_free(pm->latchArray); |
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| 910 | } |
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| 911 | } |
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| 912 | /*if arosat*/ |
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| 913 | else{ |
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| 914 | if(array_n(tmpRef1)){ |
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| 915 | tmpRef = PureSatGenerateRCArray_2(network,pm,tmpRef1, |
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| 916 | &NumInSecondLevel); |
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| 917 | array_free(pm->latchArray); |
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| 918 | } |
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| 919 | else |
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| 920 | tmpRef = array_alloc(char*,0); |
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| 921 | |
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| 922 | if(pm->verbosity>=1){ |
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| 923 | fprintf(vis_stdout,"\n sufficient refinement candidates from CA\n"); |
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| 924 | arrayForEachItem(char *,tmpRef,i,name) |
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| 925 | fprintf(vis_stdout,"%s\n",name); |
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| 926 | } |
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| 927 | PureSatAddIdenLatchToAbs(network,pm,tmpRef); |
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| 928 | array_free(tmpRef1); |
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| 929 | array_free(tmpModel); |
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| 930 | return tmpRef; |
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| 931 | } |
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| 932 | } |
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