1 | /**CFile*********************************************************************** |
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2 | |
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3 | FileName [absTranslate.c] |
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4 | |
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5 | PackageName [abs] |
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6 | |
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7 | Synopsis [Functions to translate CTL formulas to mu-calculus graphs.] |
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8 | |
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9 | Author [Abelardo Pardo <abel@vlsi.colorado.edu>] |
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10 | |
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11 | Copyright [This file was created at the University of Colorado at |
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12 | Boulder. The University of Colorado at Boulder makes no warranty |
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13 | about the suitability of this software for any purpose. It is |
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14 | presented on an AS IS basis.] |
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15 | |
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16 | ******************************************************************************/ |
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17 | |
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18 | #include "absInt.h" |
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19 | |
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20 | static char rcsid[] UNUSED = "$Id: absTranslate.c,v 1.14 2002/09/04 14:58:18 fabio Exp $"; |
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21 | |
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22 | |
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23 | /*---------------------------------------------------------------------------*/ |
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24 | /* Macro declarations */ |
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25 | /*---------------------------------------------------------------------------*/ |
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26 | |
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27 | |
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28 | /**AutomaticStart*************************************************************/ |
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29 | |
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30 | /*---------------------------------------------------------------------------*/ |
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31 | /* Static function prototypes */ |
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32 | /*---------------------------------------------------------------------------*/ |
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33 | |
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34 | static AbsVertexInfo_t * TranslateCtlSubFormula(AbsVertexCatalog_t *catalog, Ctlp_Formula_t *formula, array_t *fairArray, AbsVertexInfo_t *fairPositive, AbsVertexInfo_t *fairNegative, int polarity, int *uniqueIds); |
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35 | static AbsVertexInfo_t * ComputeFairPredicate(AbsVertexCatalog_t *catalog, AbsVertexInfo_t *atomicPredicate, array_t *fairArray, int polarity, int *uniqueIds); |
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36 | static AbsVertexInfo_t * TranslateCtlID(AbsVertexCatalog_t *catalog, Ctlp_Formula_t *formula, int polarity); |
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37 | static AbsVertexInfo_t * TranslateCtlEU(AbsVertexCatalog_t *catalog, Ctlp_Formula_t *formula, array_t *fairArray, AbsVertexInfo_t *fairPositive, AbsVertexInfo_t *fairNegative, int polarity, int *uniqueIds); |
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38 | static AbsVertexInfo_t * TranslateCtlEG(AbsVertexCatalog_t *catalog, Ctlp_Formula_t *formula, int polarity, int *uniqueIds); |
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39 | static AbsVertexInfo_t * TranslateCtlEGFair(AbsVertexCatalog_t *catalog, Ctlp_Formula_t *formula, array_t *fairArray, AbsVertexInfo_t *fairPositive, AbsVertexInfo_t *fairNegative, int polarity, int *uniqueIds); |
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40 | static AbsVertexInfo_t * TranslateCtlEX(AbsVertexCatalog_t *catalog, Ctlp_Formula_t *formula, array_t *fairArray, AbsVertexInfo_t *fairPositive, AbsVertexInfo_t *fairNegative, int polarity, int *uniqueIds); |
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41 | static AbsVertexInfo_t * TranslateCtlNOT(AbsVertexCatalog_t *catalog, Ctlp_Formula_t *formula, array_t *fairArray, AbsVertexInfo_t *fairPositive, AbsVertexInfo_t *fairNegative, int polarity, int *uniqueIds); |
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42 | static AbsVertexInfo_t * TranslateCtlTHEN(AbsVertexCatalog_t *catalog, Ctlp_Formula_t *formula, array_t *fairArray, AbsVertexInfo_t *fairPositive, AbsVertexInfo_t *fairNegative, int polarity, int *uniqueIds); |
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43 | static AbsVertexInfo_t * TranslateCtlAND(AbsVertexCatalog_t *catalog, Ctlp_Formula_t *formula, array_t *fairArray, AbsVertexInfo_t *fairPositive, AbsVertexInfo_t *fairNegative, int polarity, int *uniqueIds); |
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44 | static AbsVertexInfo_t * TranslateCtlOR(AbsVertexCatalog_t *catalog, Ctlp_Formula_t *formula, array_t *fairArray, AbsVertexInfo_t *fairPositive, AbsVertexInfo_t *fairNegative, int polarity, int *uniqueIds); |
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45 | static AbsVertexInfo_t * CreateConjunctionChain(AbsVertexCatalog_t *catalog, array_t *conjunctions, int polarity); |
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46 | |
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47 | /**AutomaticEnd***************************************************************/ |
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48 | |
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49 | |
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50 | /*---------------------------------------------------------------------------*/ |
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51 | /* Definition of exported functions */ |
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52 | /*---------------------------------------------------------------------------*/ |
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53 | |
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54 | /*---------------------------------------------------------------------------*/ |
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55 | /* Definition of internal functions */ |
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56 | /*---------------------------------------------------------------------------*/ |
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57 | |
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58 | /**Function******************************************************************** |
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59 | |
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60 | Synopsis [Translate an array of CTL formulas to an array of labeled |
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61 | operational graphs. The graphs may share vertices among them.] |
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62 | |
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63 | SideEffects [] |
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64 | |
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65 | SeeAlso [TranslateCtlSubFormula] |
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66 | |
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67 | ******************************************************************************/ |
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68 | array_t * |
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69 | AbsCtlFormulaArrayTranslate( |
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70 | Abs_VerificationInfo_t *verInfo, |
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71 | array_t *formulaArray, |
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72 | array_t *fairArray) |
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73 | { |
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74 | AbsVertexCatalog_t *catalog; |
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75 | Ctlp_Formula_t *formulaPtr; |
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76 | AbsVertexInfo_t *fairPositive; |
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77 | AbsVertexInfo_t *fairNegative; |
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78 | array_t *result; |
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79 | boolean initialPolarity; |
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80 | int uniqueIds; |
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81 | int i; |
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82 | |
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83 | if (formulaArray == NIL(array_t)) { |
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84 | return NIL(array_t); |
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85 | } |
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86 | |
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87 | /* Initialize certain variables */ |
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88 | catalog = AbsVerificationInfoReadCatalog(verInfo); |
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89 | uniqueIds = 0; |
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90 | |
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91 | if (fairArray != NIL(array_t)) { |
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92 | fairPositive = ComputeFairPredicate(catalog, NIL(AbsVertexInfo_t), |
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93 | fairArray, TRUE, &uniqueIds); |
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94 | |
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95 | fairNegative = ComputeFairPredicate(catalog, NIL(AbsVertexInfo_t), |
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96 | fairArray, FALSE, &uniqueIds); |
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97 | } |
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98 | else { |
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99 | fairPositive = NIL(AbsVertexInfo_t); |
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100 | fairNegative = NIL(AbsVertexInfo_t); |
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101 | } |
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102 | |
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103 | if (AbsOptionsReadNegateFormula(AbsVerificationInfoReadOptions(verInfo))) { |
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104 | initialPolarity = TRUE; |
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105 | } |
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106 | else { |
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107 | initialPolarity = FALSE; |
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108 | } |
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109 | |
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110 | /* Create the result */ |
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111 | result = array_alloc(AbsVertexInfo_t *, array_n(formulaArray)); |
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112 | |
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113 | arrayForEachItem(Ctlp_Formula_t *, formulaArray, i, formulaPtr) { |
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114 | AbsVertexInfo_t *resultPtr; |
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115 | |
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116 | /* Translate the formula */ |
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117 | resultPtr = TranslateCtlSubFormula(AbsVerificationInfoReadCatalog(verInfo), |
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118 | formulaPtr, /* Formula */ |
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119 | fairArray, /* Fairness |
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120 | constraints */ |
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121 | fairPositive, /* Predicate fair |
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122 | with positive |
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123 | polarity */ |
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124 | fairNegative, /* Predicate fair |
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125 | with negative |
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126 | polarity */ |
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127 | initialPolarity, /* Initial polarity */ |
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128 | &uniqueIds); /* Unique id counter */ |
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129 | |
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130 | /* Negate the formula if needed */ |
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131 | if (AbsOptionsReadNegateFormula(AbsVerificationInfoReadOptions(verInfo))) { |
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132 | AbsVertexInfo_t *newResult; |
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133 | |
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134 | /* If the formula's top vertex is a negation, eliminate the redundancy */ |
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135 | if (AbsVertexReadType(resultPtr) == not_c) { |
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136 | |
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137 | newResult = AbsVertexReadLeftKid(resultPtr); |
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138 | AbsVertexReadRefs(newResult)++; |
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139 | AbsVertexFree(catalog, resultPtr, NIL(AbsVertexInfo_t)); |
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140 | |
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141 | resultPtr = newResult; |
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142 | } |
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143 | else { |
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144 | /* Create the not vertex */ |
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145 | newResult = AbsVertexCatalogFindOrAdd(catalog, not_c, FALSE, |
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146 | resultPtr, |
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147 | NIL(AbsVertexInfo_t), 0, |
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148 | NIL(char), |
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149 | NIL(char)); |
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150 | if (AbsVertexReadType(newResult) == false_c) { |
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151 | AbsVertexSetPolarity(newResult, FALSE); |
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152 | AbsVertexSetDepth(newResult, AbsVertexReadDepth(resultPtr) + 1); |
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153 | AbsVertexSetType(newResult, not_c); |
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154 | AbsVertexSetLeftKid(newResult, resultPtr); |
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155 | AbsVertexSetParent(resultPtr, newResult); |
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156 | } |
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157 | else { |
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158 | AbsVertexFree(catalog, resultPtr, NIL(AbsVertexInfo_t)); |
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159 | } |
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160 | resultPtr = newResult; |
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161 | } |
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162 | } /* If the formula needs to be negated */ |
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163 | |
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164 | /* Set the constant bit */ |
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165 | AbsFormulaSetConstantBit(resultPtr); |
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166 | |
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167 | array_insert(AbsVertexInfo_t *, result, i, resultPtr); |
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168 | } |
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169 | |
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170 | /* Clean up */ |
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171 | if (fairPositive != NIL(AbsVertexInfo_t)) { |
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172 | AbsVertexFree(catalog, fairPositive, NIL(AbsVertexInfo_t)); |
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173 | } |
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174 | if (fairNegative != NIL(AbsVertexInfo_t)) { |
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175 | AbsVertexFree(catalog, fairNegative, NIL(AbsVertexInfo_t)); |
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176 | } |
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177 | |
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178 | #ifndef NDEBUG |
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179 | { |
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180 | AbsVertexInfo_t *operationGraph; |
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181 | st_table *rootTable = st_init_table(st_ptrcmp, st_ptrhash); |
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182 | arrayForEachItem(AbsVertexInfo_t *, result, i, operationGraph) { |
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183 | st_insert(rootTable, (char *) operationGraph, NIL(char)); |
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184 | } |
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185 | arrayForEachItem(AbsVertexInfo_t *, result, i, operationGraph) { |
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186 | assert(AbsFormulaSanityCheck(operationGraph, rootTable)); |
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187 | } |
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188 | st_free_table(rootTable); |
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189 | } |
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190 | #endif |
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191 | |
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192 | return result; |
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193 | } /* End of AbsCtlFormulaArrayTranslate */ |
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194 | |
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195 | |
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196 | /*---------------------------------------------------------------------------*/ |
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197 | /* Definition of static functions */ |
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198 | /*---------------------------------------------------------------------------*/ |
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199 | |
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200 | /**Function******************************************************************** |
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201 | |
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202 | Synopsis [Recursive formula to translate a formula to its operational graph] |
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203 | |
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204 | Description [This function is just a case to call the specific translation |
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205 | routines for the different types of sub-formulas] |
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206 | |
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207 | SideEffects [] |
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208 | |
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209 | SeeAlso [TranslateCtlId, TranslateCtlEG, TranslateCtlEGFair, TranslateCtlEU, |
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210 | TranslateCtlEX, TranslateCtlNOT, TranslateCtlTHEN, TranslateCtlAND, |
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211 | TranslateCtlOR] |
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212 | |
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213 | ******************************************************************************/ |
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214 | static AbsVertexInfo_t * |
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215 | TranslateCtlSubFormula( |
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216 | AbsVertexCatalog_t *catalog, |
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217 | Ctlp_Formula_t *formula, |
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218 | array_t *fairArray, |
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219 | AbsVertexInfo_t *fairPositive, |
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220 | AbsVertexInfo_t *fairNegative, |
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221 | int polarity, |
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222 | int *uniqueIds) |
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223 | { |
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224 | AbsVertexInfo_t *result; |
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225 | |
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226 | result = NIL(AbsVertexInfo_t); |
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227 | |
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228 | switch (Ctlp_FormulaReadType(formula)) { |
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229 | case Ctlp_TRUE_c: |
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230 | case Ctlp_FALSE_c: { |
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231 | (void) fprintf(vis_stderr, "** abs error: Error in TranslateCtlSubFormula. "); |
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232 | (void) fprintf(vis_stderr, "TRUE/FALSE constant found.\n"); |
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233 | result = NIL(AbsVertexInfo_t); |
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234 | break; |
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235 | } |
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236 | case Ctlp_ID_c: { |
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237 | result = TranslateCtlID(catalog, formula, polarity); |
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238 | break; |
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239 | } |
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240 | case Ctlp_EG_c: { |
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241 | if (fairArray == NIL(array_t)) { |
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242 | result = TranslateCtlEG(catalog, formula, polarity, uniqueIds); |
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243 | } |
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244 | else { |
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245 | result = TranslateCtlEGFair(catalog, formula, fairArray, fairPositive, |
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246 | fairNegative, polarity, uniqueIds); |
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247 | } |
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248 | break; |
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249 | } |
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250 | case Ctlp_EU_c: { |
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251 | result = TranslateCtlEU(catalog, formula, fairArray, fairPositive, |
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252 | fairNegative, polarity, uniqueIds); |
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253 | break; |
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254 | } |
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255 | case Ctlp_EX_c: { |
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256 | result = TranslateCtlEX(catalog, formula, fairArray, fairPositive, |
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257 | fairNegative, polarity, uniqueIds); |
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258 | break; |
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259 | } |
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260 | case Ctlp_NOT_c: { |
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261 | result = TranslateCtlNOT(catalog, formula, fairArray, fairPositive, |
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262 | fairNegative, polarity, uniqueIds); |
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263 | break; |
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264 | } |
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265 | case Ctlp_THEN_c: { |
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266 | result = TranslateCtlTHEN(catalog, formula, fairArray, fairPositive, |
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267 | fairNegative, polarity, uniqueIds); |
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268 | break; |
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269 | } |
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270 | case Ctlp_EQ_c: |
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271 | case Ctlp_XOR_c: { |
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272 | /* Non-monotonic operators should have been replaced before |
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273 | * reaching this point. |
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274 | */ |
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275 | fail("Encountered unexpected type of CTL formula\n"); |
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276 | break; |
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277 | } |
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278 | case Ctlp_AND_c: { |
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279 | result = TranslateCtlAND(catalog, formula, fairArray, fairPositive, |
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280 | fairNegative, polarity, uniqueIds); |
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281 | break; |
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282 | } |
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283 | case Ctlp_OR_c: { |
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284 | result = TranslateCtlOR(catalog, formula, fairArray, fairPositive, |
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285 | fairNegative, polarity, uniqueIds); |
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286 | break; |
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287 | } |
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288 | default: fail("Encountered unknown type of CTL formula\n"); |
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289 | } |
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290 | |
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291 | return result; |
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292 | } /* End of TranslateCtlSubFormula */ |
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293 | |
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294 | /**Function******************************************************************** |
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295 | |
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296 | Synopsis [Computes the operational graph representation of the predicate |
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297 | "fair"] |
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298 | |
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299 | Description [Given a set of formulas f_1,...,f_n compute the predicate fair |
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300 | which is computed as follows: fair(p) = nu(x).(p * Product(i=1,n)(EX[E[p U (x |
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301 | * f_i)]])). The final graph will have in its top vertex the polarity given as |
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302 | a parameter to the routine.] |
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303 | |
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304 | SideEffects [] |
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305 | |
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306 | SeeAlso [AbsCtlFormulaArrayTranslate] |
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307 | |
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308 | ******************************************************************************/ |
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309 | static AbsVertexInfo_t * |
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310 | ComputeFairPredicate( |
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311 | AbsVertexCatalog_t *catalog, |
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312 | AbsVertexInfo_t *atomicPredicate, |
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313 | array_t *fairArray, |
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314 | int polarity, |
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315 | int *uniqueIds) |
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316 | { |
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317 | Ctlp_Formula_t *ctlPtr; |
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318 | AbsVertexInfo_t *mainVarVertex; |
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319 | AbsVertexInfo_t *mainVarNotVertex; |
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320 | AbsVertexInfo_t *vertexPtr; |
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321 | AbsVertexInfo_t *aux1; |
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322 | AbsVertexInfo_t *aux2; |
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323 | AbsVertexInfo_t *aux3; |
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324 | array_t *conjunctions; |
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325 | array_t *constraintArray; |
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326 | int mainVarId; |
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327 | int i; |
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328 | |
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329 | /* Obtain the representation of the fairness predicates */ |
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330 | constraintArray = array_alloc(AbsVertexInfo_t *, array_n(fairArray)); |
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331 | arrayForEachItem(Ctlp_Formula_t *, fairArray, i, ctlPtr) { |
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332 | array_insert(AbsVertexInfo_t *, constraintArray, i, |
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333 | TranslateCtlSubFormula(catalog, ctlPtr, NIL(array_t), |
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334 | NIL(AbsVertexInfo_t), |
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335 | NIL(AbsVertexInfo_t), polarity, |
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336 | uniqueIds)); |
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337 | } |
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338 | |
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339 | /* Create the vertex representing the variable of the greatest fixed point */ |
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340 | mainVarId = (*uniqueIds)++; |
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341 | |
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342 | aux1 = AbsVertexCatalogFindOrAdd(catalog, variable_c, !polarity, |
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343 | NIL(AbsVertexInfo_t), |
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344 | NIL(AbsVertexInfo_t), |
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345 | mainVarId, NIL(char), NIL(char)); |
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346 | if (AbsVertexReadType(aux1) == false_c) { |
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347 | AbsVertexSetPolarity(aux1, !polarity); |
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348 | AbsVertexSetDepth(aux1, 1); |
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349 | AbsVertexSetType(aux1, variable_c); |
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350 | AbsVertexSetVarId(aux1, mainVarId); |
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351 | } |
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352 | mainVarVertex = aux1; |
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353 | |
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354 | mainVarNotVertex = AbsVertexCatalogFindOrAdd(catalog, not_c, polarity, aux1, |
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355 | NIL(AbsVertexInfo_t), 0, |
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356 | NIL(char), NIL(char)); |
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357 | if (AbsVertexReadType(mainVarNotVertex) == false_c) { |
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358 | AbsVertexSetPolarity(mainVarNotVertex, polarity); |
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359 | AbsVertexSetDepth(mainVarNotVertex, 2); |
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360 | AbsVertexSetType(mainVarNotVertex, not_c); |
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361 | AbsVertexSetLeftKid(mainVarNotVertex, aux1); |
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362 | AbsVertexSetParent(mainVarVertex, mainVarNotVertex); |
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363 | } |
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364 | else { |
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365 | AbsVertexFree(catalog, aux1, NIL(AbsVertexInfo_t)); |
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366 | } |
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367 | |
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368 | /* Create the predicates EX[E[f U z * f_i]] */ |
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369 | conjunctions = array_alloc(AbsVertexInfo_t *, array_n(fairArray)); |
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370 | arrayForEachItem(AbsVertexInfo_t *, constraintArray, i, vertexPtr) { |
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371 | AbsVertexInfo_t *varVertex; |
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372 | int variableId; |
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373 | |
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374 | /* Create the conjunction between z and f_i */ |
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375 | AbsVertexReadRefs(mainVarNotVertex)++; |
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376 | aux1 = AbsVertexCatalogFindOrAdd(catalog, and_c, polarity, vertexPtr, |
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377 | mainVarNotVertex, 0, NIL(char), |
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378 | NIL(char)); |
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379 | if (AbsVertexReadType(aux1) == false_c) { |
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380 | AbsVertexSetPolarity(aux1, polarity); |
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381 | if (AbsVertexReadDepth(vertexPtr) > 2) { |
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382 | AbsVertexSetDepth(aux1, AbsVertexReadDepth(vertexPtr) + 1); |
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383 | } |
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384 | else { |
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385 | AbsVertexSetDepth(aux1, 3); |
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386 | } |
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387 | AbsVertexSetType(aux1, and_c); |
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388 | AbsVertexSetLeftKid(aux1, vertexPtr); |
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389 | AbsVertexSetRightKid(aux1, mainVarNotVertex); |
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390 | AbsVertexSetParent(vertexPtr, aux1); |
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391 | AbsVertexSetParent(mainVarNotVertex, aux1); |
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392 | } |
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393 | else { |
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394 | /* Cache hit */ |
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395 | AbsVertexFree(catalog, vertexPtr, NIL(AbsVertexInfo_t)); |
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396 | AbsVertexFree(catalog, mainVarNotVertex, NIL(AbsVertexInfo_t)); |
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397 | } |
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398 | |
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399 | /* Create the vertex negating the previous conjunction */ |
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400 | aux2 = AbsVertexCatalogFindOrAdd(catalog, not_c, !polarity, aux1, |
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401 | NIL(AbsVertexInfo_t), 0, NIL(char), |
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402 | NIL(char)); |
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403 | if (AbsVertexReadType(aux2) == false_c) { |
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404 | AbsVertexSetPolarity(aux2, !polarity); |
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405 | AbsVertexSetDepth(aux2, AbsVertexReadDepth(aux1) + 1); |
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406 | AbsVertexSetType(aux2, not_c); |
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407 | AbsVertexSetLeftKid(aux2, aux1); |
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408 | AbsVertexSetParent(aux1, aux2); |
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409 | } |
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410 | else { |
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411 | /* Cache hit */ |
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412 | AbsVertexFree(catalog, aux1, NIL(AbsVertexInfo_t)); |
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413 | } |
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414 | |
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415 | /* Create the variable of the fixed point in the EU sub-formula*/ |
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416 | variableId = (*uniqueIds)++; |
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417 | aux1 = AbsVertexCatalogFindOrAdd(catalog, variable_c, polarity, |
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418 | NIL(AbsVertexInfo_t), |
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419 | NIL(AbsVertexInfo_t), variableId, |
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420 | NIL(char), NIL(char)); |
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421 | if (AbsVertexReadType(aux1) == false_c) { |
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422 | AbsVertexSetPolarity(aux1, polarity); |
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423 | AbsVertexSetDepth(aux1, 1); |
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424 | AbsVertexSetType(aux1, variable_c); |
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425 | AbsVertexSetVarId(aux1, variableId); |
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426 | } |
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427 | varVertex = aux1; |
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428 | |
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429 | /* Create the vertex storing the preimage sub-formula */ |
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430 | aux3 = AbsVertexCatalogFindOrAdd(catalog, preImage_c, polarity, |
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431 | aux1, NIL(AbsVertexInfo_t), |
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432 | 0, NIL(char), NIL(char)); |
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433 | if (AbsVertexReadType(aux3) == false_c) { |
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434 | AbsVertexSetPolarity(aux3, polarity); |
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435 | AbsVertexSetDepth(aux3, 2); |
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436 | AbsVertexSetType(aux3, preImage_c); |
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437 | AbsVertexSetLeftKid(aux3, aux1); |
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438 | AbsVertexSetParent(aux1, aux3); |
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439 | } |
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440 | else { |
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441 | /* Cache hit */ |
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442 | AbsVertexFree(catalog, aux1, NIL(AbsVertexInfo_t)); |
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443 | } |
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444 | |
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445 | if (atomicPredicate != NIL(AbsVertexInfo_t)) { |
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446 | AbsVertexReadRefs(atomicPredicate)++; |
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447 | /* Create the vertex representing the and */ |
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448 | aux1 = AbsVertexCatalogFindOrAdd(catalog, and_c, polarity, |
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449 | atomicPredicate, aux3, 0, NIL(char), |
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450 | NIL(char)); |
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451 | if (AbsVertexReadType(aux1) == false_c) { |
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452 | AbsVertexSetPolarity(aux1, polarity); |
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453 | if (AbsVertexReadDepth(atomicPredicate) > 2) { |
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454 | AbsVertexSetDepth(aux1, AbsVertexReadDepth(atomicPredicate) + 1); |
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455 | } |
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456 | else { |
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457 | AbsVertexSetDepth(aux1, 3); |
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458 | } |
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459 | AbsVertexSetType(aux1, and_c); |
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460 | AbsVertexSetLeftKid(aux1, atomicPredicate); |
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461 | AbsVertexSetRightKid(aux1, aux3); |
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462 | AbsVertexSetParent(atomicPredicate, aux1); |
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463 | AbsVertexSetParent(aux3, aux1); |
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464 | } |
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465 | else { |
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466 | /* Cache hit */ |
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467 | AbsVertexFree(catalog, aux3, NIL(AbsVertexInfo_t)); |
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468 | AbsVertexFree(catalog, atomicPredicate, NIL(AbsVertexInfo_t)); |
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469 | } |
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470 | } |
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471 | else { |
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472 | aux1 = aux3; |
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473 | } |
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474 | |
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475 | /* Create the not vertex on top of the conjunction */ |
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476 | aux3 = AbsVertexCatalogFindOrAdd(catalog, not_c, !polarity, aux1, |
---|
477 | NIL(AbsVertexInfo_t), 0, NIL(char), |
---|
478 | NIL(char)); |
---|
479 | if (AbsVertexReadType(aux3) == false_c) { |
---|
480 | AbsVertexSetPolarity(aux3, !polarity); |
---|
481 | AbsVertexSetDepth(aux3, AbsVertexReadDepth(aux1) + 1); |
---|
482 | AbsVertexSetType(aux3, not_c); |
---|
483 | AbsVertexSetLeftKid(aux3, aux1); |
---|
484 | AbsVertexSetParent(aux1, aux3); |
---|
485 | } |
---|
486 | else { |
---|
487 | /* Cache hit */ |
---|
488 | AbsVertexFree(catalog, aux1, NIL(AbsVertexInfo_t)); |
---|
489 | } |
---|
490 | |
---|
491 | /* Vertex taking the conjunction */ |
---|
492 | aux1 = AbsVertexCatalogFindOrAdd(catalog, and_c, !polarity, aux2, aux3, |
---|
493 | 0, NIL(char), NIL(char)); |
---|
494 | if (AbsVertexReadType(aux1) == false_c) { |
---|
495 | AbsVertexSetPolarity(aux1, !polarity); |
---|
496 | if (AbsVertexReadDepth(aux2) > AbsVertexReadDepth(aux3)) { |
---|
497 | AbsVertexSetDepth(aux1, AbsVertexReadDepth(aux2) + 1); |
---|
498 | } |
---|
499 | else { |
---|
500 | AbsVertexSetDepth(aux1, AbsVertexReadDepth(aux3) + 1); |
---|
501 | } |
---|
502 | AbsVertexSetType(aux1, and_c); |
---|
503 | AbsVertexSetLeftKid(aux1, aux2); |
---|
504 | AbsVertexSetRightKid(aux1, aux3); |
---|
505 | AbsVertexSetParent(aux3, aux1); |
---|
506 | AbsVertexSetParent(aux2, aux1); |
---|
507 | } |
---|
508 | else { |
---|
509 | AbsVertexFree(catalog, aux3, NIL(AbsVertexInfo_t)); |
---|
510 | AbsVertexFree(catalog, aux2, NIL(AbsVertexInfo_t)); |
---|
511 | } |
---|
512 | |
---|
513 | /* negation of the conjunction */ |
---|
514 | aux2 = AbsVertexCatalogFindOrAdd(catalog, not_c, polarity, aux1, |
---|
515 | NIL(AbsVertexInfo_t), 0, NIL(char), |
---|
516 | NIL(char)); |
---|
517 | if (AbsVertexReadType(aux2) == false_c) { |
---|
518 | AbsVertexSetPolarity(aux2, polarity); |
---|
519 | AbsVertexSetDepth(aux2, AbsVertexReadDepth(aux1) + 1); |
---|
520 | AbsVertexSetType(aux2, not_c); |
---|
521 | AbsVertexSetLeftKid(aux2, aux1); |
---|
522 | AbsVertexSetParent(aux1, aux2); |
---|
523 | } |
---|
524 | else { |
---|
525 | AbsVertexFree(catalog, aux1, NIL(AbsVertexInfo_t)); |
---|
526 | } |
---|
527 | |
---|
528 | /* Create the lfp vertex for the EU operator */ |
---|
529 | aux1 = AbsVertexCatalogFindOrAdd(catalog, fixedPoint_c, polarity, aux2, |
---|
530 | NIL(AbsVertexInfo_t), 0, NIL(char), |
---|
531 | NIL(char)); |
---|
532 | if (AbsVertexReadType(aux1) == false_c) { |
---|
533 | AbsVertexSetPolarity(aux1, polarity); |
---|
534 | AbsVertexSetDepth(aux1, AbsVertexReadDepth(aux2) + 1); |
---|
535 | AbsVertexSetType(aux1, fixedPoint_c); |
---|
536 | AbsVertexSetLeftKid(aux1, aux2); |
---|
537 | AbsVertexSetFpVar(aux1, varVertex); |
---|
538 | AbsVertexSetUseExtraCareSet(aux1, TRUE); |
---|
539 | AbsVertexSetParent(aux2, aux1); |
---|
540 | } |
---|
541 | else { |
---|
542 | AbsVertexFree(catalog, aux2, NIL(AbsVertexInfo_t)); |
---|
543 | } |
---|
544 | |
---|
545 | /* Create the final EX vertex on top of the EU */ |
---|
546 | aux2 = AbsVertexCatalogFindOrAdd(catalog, preImage_c, polarity, |
---|
547 | aux1, NIL(AbsVertexInfo_t), 0, NIL(char), |
---|
548 | NIL(char)); |
---|
549 | if (AbsVertexReadType(aux2) == false_c) { |
---|
550 | AbsVertexSetPolarity(aux2, polarity); |
---|
551 | AbsVertexSetDepth(aux2, AbsVertexReadDepth(aux1) + 1); |
---|
552 | AbsVertexSetType(aux2, preImage_c); |
---|
553 | AbsVertexSetLeftKid(aux2, aux1); |
---|
554 | AbsVertexSetParent(aux1, aux2); |
---|
555 | } |
---|
556 | else { |
---|
557 | AbsVertexFree(catalog, aux1, NIL(AbsVertexInfo_t)); |
---|
558 | } |
---|
559 | |
---|
560 | array_insert(AbsVertexInfo_t *, conjunctions, i, aux2); |
---|
561 | } /* End of the loop iterating over the fairness constraints */ |
---|
562 | AbsVertexReadRefs(mainVarNotVertex)--; |
---|
563 | |
---|
564 | /* Create the chain of ands for the conjunctions */ |
---|
565 | aux1 = CreateConjunctionChain(catalog, conjunctions, polarity); |
---|
566 | |
---|
567 | /* Create the and with the atomic predicate if required */ |
---|
568 | if (atomicPredicate != NIL(AbsVertexInfo_t)) { |
---|
569 | aux2 = AbsVertexCatalogFindOrAdd(catalog, and_c, polarity, atomicPredicate, |
---|
570 | aux1, 0, NIL(char), NIL(char)); |
---|
571 | if (AbsVertexReadType(aux2) == false_c) { |
---|
572 | AbsVertexSetPolarity(aux2, polarity); |
---|
573 | if (AbsVertexReadDepth(aux1) > AbsVertexReadDepth(atomicPredicate)) { |
---|
574 | AbsVertexSetDepth(aux2, AbsVertexReadDepth(aux1) + 1); |
---|
575 | } |
---|
576 | else { |
---|
577 | AbsVertexSetDepth(aux2, AbsVertexReadDepth(atomicPredicate) + 1); |
---|
578 | } |
---|
579 | AbsVertexSetType(aux2, and_c); |
---|
580 | AbsVertexSetLeftKid(aux2, atomicPredicate); |
---|
581 | AbsVertexSetRightKid(aux2, aux1); |
---|
582 | AbsVertexSetParent(atomicPredicate, aux2); |
---|
583 | AbsVertexSetParent(aux1, aux2); |
---|
584 | } |
---|
585 | else { |
---|
586 | AbsVertexFree(catalog, aux1, NIL(AbsVertexInfo_t)); |
---|
587 | AbsVertexFree(catalog, atomicPredicate, NIL(AbsVertexInfo_t)); |
---|
588 | } |
---|
589 | } |
---|
590 | else { |
---|
591 | aux2 = aux1; |
---|
592 | } |
---|
593 | |
---|
594 | /* Create the not vertex on top of the conjunction */ |
---|
595 | aux1 = AbsVertexCatalogFindOrAdd(catalog, not_c, !polarity, aux2, |
---|
596 | NIL(AbsVertexInfo_t), 0, NIL(char), |
---|
597 | NIL(char)); |
---|
598 | if (AbsVertexReadType(aux1) == false_c) { |
---|
599 | AbsVertexSetPolarity(aux1, !polarity); |
---|
600 | AbsVertexSetDepth(aux1, AbsVertexReadDepth(aux2) + 1); |
---|
601 | AbsVertexSetType(aux1, not_c); |
---|
602 | AbsVertexSetLeftKid(aux1, aux2); |
---|
603 | AbsVertexSetParent(aux2, aux1); |
---|
604 | } |
---|
605 | else { |
---|
606 | AbsVertexFree(catalog, aux2, NIL(AbsVertexInfo_t)); |
---|
607 | } |
---|
608 | |
---|
609 | /* Create the top most fixed point vertex */ |
---|
610 | aux2 = AbsVertexCatalogFindOrAdd(catalog, fixedPoint_c, !polarity, aux1, |
---|
611 | NIL(AbsVertexInfo_t), mainVarId, |
---|
612 | NIL(char), NIL(char)); |
---|
613 | if (AbsVertexReadType(aux2) == false_c) { |
---|
614 | AbsVertexSetPolarity(aux2, !polarity); |
---|
615 | AbsVertexSetDepth(aux2, AbsVertexReadDepth(aux1) + 1); |
---|
616 | AbsVertexSetType(aux2, fixedPoint_c); |
---|
617 | AbsVertexSetVarId(aux2, mainVarId); |
---|
618 | AbsVertexSetLeftKid(aux2, aux1); |
---|
619 | AbsVertexSetFpVar(aux2, mainVarVertex); |
---|
620 | AbsVertexSetUseExtraCareSet(aux2, FALSE); |
---|
621 | AbsVertexSetParent(aux1, aux2); |
---|
622 | } |
---|
623 | else { |
---|
624 | AbsVertexSetUseExtraCareSet(aux2, FALSE); |
---|
625 | AbsVertexFree(catalog, aux1, NIL(AbsVertexInfo_t)); |
---|
626 | } |
---|
627 | |
---|
628 | /* Create the top most vertex */ |
---|
629 | aux1 = AbsVertexCatalogFindOrAdd(catalog, not_c, polarity, aux2, |
---|
630 | NIL(AbsVertexInfo_t), 0, NIL(char), |
---|
631 | NIL(char)); |
---|
632 | if (AbsVertexReadType(aux1) == false_c) { |
---|
633 | AbsVertexSetPolarity(aux1, polarity); |
---|
634 | AbsVertexSetDepth(aux1, AbsVertexReadDepth(aux2) + 1); |
---|
635 | AbsVertexSetType(aux1, not_c); |
---|
636 | AbsVertexSetLeftKid(aux1, aux2); |
---|
637 | AbsVertexSetParent(aux2, aux1); |
---|
638 | } |
---|
639 | else { |
---|
640 | AbsVertexFree(catalog, aux2, NIL(AbsVertexInfo_t)); |
---|
641 | } |
---|
642 | |
---|
643 | /* Clean up */ |
---|
644 | array_free(constraintArray); |
---|
645 | arrayForEachItem(AbsVertexInfo_t *, conjunctions, i, vertexPtr) { |
---|
646 | AbsVertexFree(catalog, vertexPtr, NIL(AbsVertexInfo_t)); |
---|
647 | } |
---|
648 | array_free(conjunctions); |
---|
649 | |
---|
650 | return aux1; |
---|
651 | } /* End of ComputeFairPredicate */ |
---|
652 | |
---|
653 | /**Function******************************************************************** |
---|
654 | |
---|
655 | Synopsis [Computes the operational grarph representation of an atomic |
---|
656 | predicate] |
---|
657 | |
---|
658 | SideEffects [] |
---|
659 | |
---|
660 | SeeAlso [TranslateCtlSubFormula] |
---|
661 | |
---|
662 | ******************************************************************************/ |
---|
663 | static AbsVertexInfo_t * |
---|
664 | TranslateCtlID( |
---|
665 | AbsVertexCatalog_t *catalog, |
---|
666 | Ctlp_Formula_t *formula, |
---|
667 | int polarity) |
---|
668 | { |
---|
669 | AbsVertexInfo_t *result; |
---|
670 | |
---|
671 | result = AbsVertexCatalogFindOrAdd(catalog, |
---|
672 | identifier_c, |
---|
673 | polarity, |
---|
674 | NIL(AbsVertexInfo_t), |
---|
675 | NIL(AbsVertexInfo_t), |
---|
676 | 0, |
---|
677 | Ctlp_FormulaReadVariableName(formula), |
---|
678 | Ctlp_FormulaReadValueName(formula)); |
---|
679 | if (AbsVertexReadType(result) == false_c) { |
---|
680 | AbsVertexSetPolarity(result, polarity); |
---|
681 | AbsVertexSetDepth(result, 1); |
---|
682 | AbsVertexSetType(result, identifier_c); |
---|
683 | AbsVertexSetName(result, |
---|
684 | util_strsav(Ctlp_FormulaReadVariableName(formula))); |
---|
685 | AbsVertexSetValue(result, |
---|
686 | util_strsav(Ctlp_FormulaReadValueName(formula))); |
---|
687 | } |
---|
688 | |
---|
689 | return result; |
---|
690 | } /* End of TranslateCtlID */ |
---|
691 | |
---|
692 | /**Function******************************************************************** |
---|
693 | |
---|
694 | Synopsis [Computes the operational graph representation of a formula of the |
---|
695 | form E(pUq)] |
---|
696 | |
---|
697 | SideEffects [] |
---|
698 | |
---|
699 | SeeAlso [TranslateCtlSubFormula] |
---|
700 | |
---|
701 | ******************************************************************************/ |
---|
702 | static AbsVertexInfo_t * |
---|
703 | TranslateCtlEU( |
---|
704 | AbsVertexCatalog_t *catalog, |
---|
705 | Ctlp_Formula_t *formula, |
---|
706 | array_t *fairArray, |
---|
707 | AbsVertexInfo_t *fairPositive, |
---|
708 | AbsVertexInfo_t *fairNegative, |
---|
709 | int polarity, |
---|
710 | int *uniqueIds) |
---|
711 | { |
---|
712 | AbsVertexInfo_t *result; |
---|
713 | AbsVertexInfo_t *leftResult; |
---|
714 | AbsVertexInfo_t *rightResult; |
---|
715 | AbsVertexInfo_t *aux1; |
---|
716 | AbsVertexInfo_t *aux2; |
---|
717 | AbsVertexInfo_t *aux3; |
---|
718 | AbsVertexInfo_t *varVertex; |
---|
719 | int variableId; |
---|
720 | |
---|
721 | /* Allocate a unique id for the fixed point */ |
---|
722 | variableId = (*uniqueIds)++; |
---|
723 | |
---|
724 | /* Create the vertex storing the fixed point variable */ |
---|
725 | aux1 = AbsVertexCatalogFindOrAdd(catalog, variable_c, polarity, |
---|
726 | NIL(AbsVertexInfo_t), |
---|
727 | NIL(AbsVertexInfo_t), variableId, |
---|
728 | NIL(char), NIL(char)); |
---|
729 | if (AbsVertexReadType(aux1) == false_c) { |
---|
730 | AbsVertexSetPolarity(aux1, polarity); |
---|
731 | AbsVertexSetDepth(aux1, 1); |
---|
732 | AbsVertexSetType(aux1, variable_c); |
---|
733 | AbsVertexSetVarId(aux1, variableId); |
---|
734 | } |
---|
735 | varVertex = aux1; |
---|
736 | |
---|
737 | /* Create the vertex storing the preimage sub-formula */ |
---|
738 | aux2 = AbsVertexCatalogFindOrAdd(catalog, preImage_c, polarity, |
---|
739 | aux1, NIL(AbsVertexInfo_t), |
---|
740 | 0, NIL(char), NIL(char)); |
---|
741 | if (AbsVertexReadType(aux2) == false_c) { |
---|
742 | AbsVertexSetPolarity(aux2, polarity); |
---|
743 | AbsVertexSetDepth(aux2, 2); |
---|
744 | AbsVertexSetType(aux2, preImage_c); |
---|
745 | AbsVertexSetLeftKid(aux2, aux1); |
---|
746 | AbsVertexSetParent(aux1, aux2); |
---|
747 | } |
---|
748 | else { |
---|
749 | /* Cache hit */ |
---|
750 | AbsVertexFree(catalog, aux1, NIL(AbsVertexInfo_t)); |
---|
751 | } |
---|
752 | |
---|
753 | if (Ctlp_FormulaReadType(Ctlp_FormulaReadLeftChild(formula)) != Ctlp_TRUE_c) { |
---|
754 | /* Compute the value of the sub-formula */ |
---|
755 | leftResult = TranslateCtlSubFormula(catalog, |
---|
756 | Ctlp_FormulaReadLeftChild(formula), |
---|
757 | fairArray, fairPositive, fairNegative, |
---|
758 | polarity, uniqueIds); |
---|
759 | |
---|
760 | /* Create the vertex representing the and */ |
---|
761 | aux1 = AbsVertexCatalogFindOrAdd(catalog, and_c, polarity, leftResult, aux2, |
---|
762 | 0, NIL(char), |
---|
763 | NIL(char)); |
---|
764 | if (AbsVertexReadType(aux1) == false_c) { |
---|
765 | AbsVertexSetPolarity(aux1, polarity); |
---|
766 | if (AbsVertexReadDepth(leftResult) > 2) { |
---|
767 | AbsVertexSetDepth(aux1, AbsVertexReadDepth(leftResult) + 1); |
---|
768 | } |
---|
769 | else { |
---|
770 | AbsVertexSetDepth(aux1, 3); |
---|
771 | } |
---|
772 | AbsVertexSetType(aux1, and_c); |
---|
773 | AbsVertexSetLeftKid(aux1, leftResult); |
---|
774 | AbsVertexSetRightKid(aux1, aux2); |
---|
775 | AbsVertexSetParent(leftResult, aux1); |
---|
776 | AbsVertexSetParent(aux2, aux1); |
---|
777 | } |
---|
778 | else { |
---|
779 | /* Cache hit */ |
---|
780 | AbsVertexFree(catalog, aux2, NIL(AbsVertexInfo_t)); |
---|
781 | AbsVertexFree(catalog, leftResult, NIL(AbsVertexInfo_t)); |
---|
782 | } |
---|
783 | } /* if type is TRUE */ |
---|
784 | else { |
---|
785 | aux1 = aux2; |
---|
786 | } |
---|
787 | |
---|
788 | /* Create the not vertex on top of the conjunction */ |
---|
789 | aux2 = AbsVertexCatalogFindOrAdd(catalog, not_c, !polarity, aux1, |
---|
790 | NIL(AbsVertexInfo_t), 0, NIL(char), |
---|
791 | NIL(char)); |
---|
792 | if (AbsVertexReadType(aux2) == false_c) { |
---|
793 | AbsVertexSetPolarity(aux2, !polarity); |
---|
794 | AbsVertexSetDepth(aux2, AbsVertexReadDepth(aux1) + 1); |
---|
795 | AbsVertexSetType(aux2, not_c); |
---|
796 | AbsVertexSetLeftKid(aux2, aux1); |
---|
797 | AbsVertexSetParent(aux1, aux2); |
---|
798 | } |
---|
799 | else { |
---|
800 | /* Cache hit */ |
---|
801 | AbsVertexFree(catalog, aux1, NIL(AbsVertexInfo_t)); |
---|
802 | } |
---|
803 | |
---|
804 | /* Evaluate the right operand of the EU */ |
---|
805 | rightResult= TranslateCtlSubFormula(catalog, |
---|
806 | Ctlp_FormulaReadRightChild(formula), |
---|
807 | fairArray, fairPositive, fairNegative, |
---|
808 | polarity, uniqueIds); |
---|
809 | |
---|
810 | /* check if there are fairness constraints */ |
---|
811 | if (fairPositive != NIL(AbsVertexInfo_t)) { |
---|
812 | AbsVertexInfo_t *fairness; |
---|
813 | AbsVertexInfo_t *conjunction; |
---|
814 | |
---|
815 | /* The negative polarity version of the fairness must be present as well */ |
---|
816 | assert(fairNegative != NIL(AbsVertexInfo_t)); |
---|
817 | |
---|
818 | /* Select the apropriate representation of the fairness constraint */ |
---|
819 | if (polarity) { |
---|
820 | fairness = fairPositive; |
---|
821 | } |
---|
822 | else { |
---|
823 | fairness = fairNegative; |
---|
824 | } |
---|
825 | AbsVertexReadRefs(fairness)++; |
---|
826 | |
---|
827 | conjunction = AbsVertexCatalogFindOrAdd(catalog, and_c, polarity, |
---|
828 | rightResult, fairness, 0, NIL(char), |
---|
829 | NIL(char)); |
---|
830 | |
---|
831 | if (AbsVertexReadType(conjunction) == false_c) { |
---|
832 | int leftDepth; |
---|
833 | int rightDepth; |
---|
834 | |
---|
835 | leftDepth = AbsVertexReadDepth(rightResult); |
---|
836 | rightDepth = AbsVertexReadDepth(fairness); |
---|
837 | |
---|
838 | AbsVertexSetPolarity(conjunction, polarity); |
---|
839 | if (leftDepth > rightDepth) { |
---|
840 | AbsVertexSetDepth(conjunction, leftDepth + 1); |
---|
841 | } |
---|
842 | else { |
---|
843 | AbsVertexSetDepth(conjunction, rightDepth + 1); |
---|
844 | } |
---|
845 | AbsVertexSetType(conjunction, and_c); |
---|
846 | AbsVertexSetLeftKid(conjunction, rightResult); |
---|
847 | AbsVertexSetRightKid(conjunction, fairness); |
---|
848 | AbsVertexSetParent(rightResult, conjunction); |
---|
849 | AbsVertexSetParent(fairness, conjunction); |
---|
850 | } |
---|
851 | else { |
---|
852 | AbsVertexFree(catalog, rightResult, NIL(AbsVertexInfo_t)); |
---|
853 | AbsVertexFree(catalog, fairness, NIL(AbsVertexInfo_t)); |
---|
854 | } |
---|
855 | rightResult = conjunction; |
---|
856 | } |
---|
857 | |
---|
858 | /* If the sub-formula's top vertex is a negation, eliminate the redundancy */ |
---|
859 | if (AbsVertexReadType(rightResult) == not_c) { |
---|
860 | AbsVertexInfo_t *newResult; |
---|
861 | |
---|
862 | |
---|
863 | newResult = AbsVertexReadLeftKid(rightResult); |
---|
864 | AbsVertexReadRefs(newResult)++; |
---|
865 | AbsVertexFree(catalog, rightResult, NIL(AbsVertexInfo_t)); |
---|
866 | aux1 = newResult; |
---|
867 | } |
---|
868 | else { |
---|
869 | /* Vertex negating second operand */ |
---|
870 | aux1 = AbsVertexCatalogFindOrAdd(catalog, not_c, !polarity, rightResult, |
---|
871 | NIL(AbsVertexInfo_t), 0, NIL(char), |
---|
872 | NIL(char)); |
---|
873 | if (AbsVertexReadType(aux1) == false_c) { |
---|
874 | AbsVertexSetPolarity(aux1, !polarity); |
---|
875 | AbsVertexSetDepth(aux1, AbsVertexReadDepth(rightResult) + 1); |
---|
876 | AbsVertexSetType(aux1, not_c); |
---|
877 | AbsVertexSetLeftKid(aux1, rightResult); |
---|
878 | AbsVertexSetParent(rightResult, aux1); |
---|
879 | } |
---|
880 | else { |
---|
881 | AbsVertexFree(catalog, rightResult, NIL(AbsVertexInfo_t)); |
---|
882 | } |
---|
883 | } |
---|
884 | |
---|
885 | /* Vertex taking the conjunction */ |
---|
886 | aux3 = AbsVertexCatalogFindOrAdd(catalog, and_c, !polarity, aux1, aux2, |
---|
887 | 0, NIL(char), NIL(char)); |
---|
888 | if (AbsVertexReadType(aux3) == false_c) { |
---|
889 | AbsVertexSetPolarity(aux3, !polarity); |
---|
890 | if (AbsVertexReadDepth(aux1) > AbsVertexReadDepth(aux2)) { |
---|
891 | AbsVertexSetDepth(aux3, AbsVertexReadDepth(aux1) + 1); |
---|
892 | } |
---|
893 | else { |
---|
894 | AbsVertexSetDepth(aux3, AbsVertexReadDepth(aux2) + 1); |
---|
895 | } |
---|
896 | AbsVertexSetType(aux3, and_c); |
---|
897 | AbsVertexSetLeftKid(aux3, aux1); |
---|
898 | AbsVertexSetRightKid(aux3, aux2); |
---|
899 | AbsVertexSetParent(aux1, aux3); |
---|
900 | AbsVertexSetParent(aux2, aux3); |
---|
901 | } |
---|
902 | else { |
---|
903 | AbsVertexFree(catalog, aux1, NIL(AbsVertexInfo_t)); |
---|
904 | AbsVertexFree(catalog, aux2, NIL(AbsVertexInfo_t)); |
---|
905 | } |
---|
906 | |
---|
907 | /* negation of the conjunction */ |
---|
908 | aux1 = AbsVertexCatalogFindOrAdd(catalog, not_c, polarity, aux3, |
---|
909 | NIL(AbsVertexInfo_t), 0, NIL(char), |
---|
910 | NIL(char)); |
---|
911 | if (AbsVertexReadType(aux1) == false_c) { |
---|
912 | AbsVertexSetPolarity(aux1, polarity); |
---|
913 | AbsVertexSetDepth(aux1, AbsVertexReadDepth(aux3) + 1); |
---|
914 | AbsVertexSetType(aux1, not_c); |
---|
915 | AbsVertexSetLeftKid(aux1, aux3); |
---|
916 | AbsVertexSetParent(aux3, aux1); |
---|
917 | } |
---|
918 | else { |
---|
919 | AbsVertexFree(catalog, aux3, NIL(AbsVertexInfo_t)); |
---|
920 | } |
---|
921 | |
---|
922 | /* Top vertex fixed point operator */ |
---|
923 | result = AbsVertexCatalogFindOrAdd(catalog, fixedPoint_c, polarity, aux1, |
---|
924 | NIL(AbsVertexInfo_t), 0, NIL(char), |
---|
925 | NIL(char)); |
---|
926 | if (AbsVertexReadType(result) == false_c) { |
---|
927 | AbsVertexSetPolarity(result, polarity); |
---|
928 | AbsVertexSetDepth(result, AbsVertexReadDepth(aux1) + 1); |
---|
929 | AbsVertexSetType(result, fixedPoint_c); |
---|
930 | AbsVertexSetLeftKid(result, aux1); |
---|
931 | AbsVertexSetFpVar(result, varVertex); |
---|
932 | AbsVertexSetUseExtraCareSet(result, TRUE); |
---|
933 | AbsVertexSetParent(aux1, result); |
---|
934 | } |
---|
935 | else { |
---|
936 | AbsVertexFree(catalog, aux1, NIL(AbsVertexInfo_t)); |
---|
937 | } |
---|
938 | |
---|
939 | return result; |
---|
940 | } /* End of TranslateCtlEU */ |
---|
941 | |
---|
942 | /**Function******************************************************************** |
---|
943 | |
---|
944 | Synopsis [Computes the operational graph representation of a formula of the |
---|
945 | form EG(p)] |
---|
946 | |
---|
947 | SideEffects [] |
---|
948 | |
---|
949 | SeeAlso [TranslateCtlSubFormula] |
---|
950 | |
---|
951 | ******************************************************************************/ |
---|
952 | static AbsVertexInfo_t * |
---|
953 | TranslateCtlEG( |
---|
954 | AbsVertexCatalog_t *catalog, |
---|
955 | Ctlp_Formula_t *formula, |
---|
956 | int polarity, |
---|
957 | int *uniqueIds) |
---|
958 | { |
---|
959 | AbsVertexInfo_t *result; |
---|
960 | AbsVertexInfo_t *varVertex; |
---|
961 | AbsVertexInfo_t *aux1; |
---|
962 | AbsVertexInfo_t *aux2; |
---|
963 | AbsVertexInfo_t *childResult; |
---|
964 | int variableId; |
---|
965 | |
---|
966 | /* Allocate a unique id for the fixed point */ |
---|
967 | variableId = (*uniqueIds)++; |
---|
968 | |
---|
969 | /* Create the vertex storing the fixed point variable */ |
---|
970 | aux1 = AbsVertexCatalogFindOrAdd(catalog, variable_c, !polarity, |
---|
971 | NIL(AbsVertexInfo_t), |
---|
972 | NIL(AbsVertexInfo_t), |
---|
973 | variableId, NIL(char), NIL(char)); |
---|
974 | if (AbsVertexReadType(aux1) == false_c) { |
---|
975 | AbsVertexSetPolarity(aux1, !polarity); |
---|
976 | AbsVertexSetDepth(aux1, 1); |
---|
977 | AbsVertexSetType(aux1, variable_c); |
---|
978 | AbsVertexSetVarId(aux1, variableId); |
---|
979 | } |
---|
980 | varVertex = aux1; |
---|
981 | |
---|
982 | /* Create the vertex to negate the variable of the fixed point */ |
---|
983 | aux2 = AbsVertexCatalogFindOrAdd(catalog, not_c, polarity, aux1, |
---|
984 | NIL(AbsVertexInfo_t), 0, NIL(char), |
---|
985 | NIL(char)); |
---|
986 | if (AbsVertexReadType(aux2) == false_c) { |
---|
987 | AbsVertexSetPolarity(aux2, polarity); |
---|
988 | AbsVertexSetDepth(aux2, 2); |
---|
989 | AbsVertexSetType(aux2, not_c); |
---|
990 | AbsVertexSetLeftKid(aux2, aux1); |
---|
991 | AbsVertexSetParent(aux1, aux2); |
---|
992 | } |
---|
993 | else { |
---|
994 | AbsVertexFree(catalog, aux1, NIL(AbsVertexInfo_t)); |
---|
995 | } |
---|
996 | |
---|
997 | /* Create the vertex storing the preimage sub-formula */ |
---|
998 | aux1 = AbsVertexCatalogFindOrAdd(catalog, preImage_c, polarity, |
---|
999 | aux1, NIL(AbsVertexInfo_t), |
---|
1000 | 0, NIL(char), NIL(char)); |
---|
1001 | if (AbsVertexReadType(aux1) == false_c) { |
---|
1002 | AbsVertexSetPolarity(aux1, polarity); |
---|
1003 | AbsVertexSetDepth(aux1, 3); |
---|
1004 | AbsVertexSetType(aux1, preImage_c); |
---|
1005 | AbsVertexSetLeftKid(aux1, aux2); |
---|
1006 | AbsVertexSetParent(aux2, aux1); |
---|
1007 | } |
---|
1008 | else { |
---|
1009 | AbsVertexFree(catalog, aux1, NIL(AbsVertexInfo_t)); |
---|
1010 | } |
---|
1011 | |
---|
1012 | if (Ctlp_FormulaReadType(Ctlp_FormulaReadLeftChild(formula)) != Ctlp_TRUE_c) { |
---|
1013 | /* Create the vertex representing the sub-formula of EG */ |
---|
1014 | childResult = TranslateCtlSubFormula(catalog, |
---|
1015 | Ctlp_FormulaReadLeftChild(formula), |
---|
1016 | NIL(array_t), NIL(AbsVertexInfo_t), |
---|
1017 | NIL(AbsVertexInfo_t), polarity, |
---|
1018 | uniqueIds); |
---|
1019 | |
---|
1020 | /* Create the vertex representing the and */ |
---|
1021 | aux2 = AbsVertexCatalogFindOrAdd(catalog, and_c, polarity, childResult, |
---|
1022 | aux1, 0, NIL(char), |
---|
1023 | NIL(char)); |
---|
1024 | if (AbsVertexReadType(aux2) == false_c) { |
---|
1025 | AbsVertexSetPolarity(aux2, polarity); |
---|
1026 | if (AbsVertexReadDepth(childResult) > 2) { |
---|
1027 | AbsVertexSetDepth(aux2, AbsVertexReadDepth(childResult) + 1); |
---|
1028 | } |
---|
1029 | else { |
---|
1030 | AbsVertexSetDepth(aux2, 4); |
---|
1031 | } |
---|
1032 | AbsVertexSetType(aux2, and_c); |
---|
1033 | AbsVertexSetLeftKid(aux2, childResult); |
---|
1034 | AbsVertexSetRightKid(aux2, aux1); |
---|
1035 | AbsVertexSetParent(childResult, aux2); |
---|
1036 | AbsVertexSetParent(aux1, aux2); |
---|
1037 | } |
---|
1038 | else { |
---|
1039 | AbsVertexFree(catalog, aux1, NIL(AbsVertexInfo_t)); |
---|
1040 | AbsVertexFree(catalog, childResult, NIL(AbsVertexInfo_t)); |
---|
1041 | } |
---|
1042 | } |
---|
1043 | else { |
---|
1044 | aux2 = aux1; |
---|
1045 | } |
---|
1046 | |
---|
1047 | /* Create the not vertex on top of the conjunction */ |
---|
1048 | aux1 = AbsVertexCatalogFindOrAdd(catalog, not_c, !polarity, aux2, |
---|
1049 | NIL(AbsVertexInfo_t), 0, NIL(char), |
---|
1050 | NIL(char)); |
---|
1051 | if (AbsVertexReadType(aux1) == false_c) { |
---|
1052 | AbsVertexSetPolarity(aux1, !polarity); |
---|
1053 | AbsVertexSetDepth(aux1, AbsVertexReadDepth(aux2) + 1); |
---|
1054 | AbsVertexSetType(aux1, not_c); |
---|
1055 | AbsVertexSetLeftKid(aux1, aux2); |
---|
1056 | AbsVertexSetParent(aux2, aux1); |
---|
1057 | } |
---|
1058 | else { |
---|
1059 | AbsVertexFree(catalog, aux2, NIL(AbsVertexInfo_t)); |
---|
1060 | } |
---|
1061 | |
---|
1062 | /* Create the fixedpoint_c vertex */ |
---|
1063 | aux2 = AbsVertexCatalogFindOrAdd(catalog, fixedPoint_c, !polarity, aux1, |
---|
1064 | NIL(AbsVertexInfo_t), variableId, |
---|
1065 | NIL(char), NIL(char)); |
---|
1066 | if (AbsVertexReadType(aux2) == false_c) { |
---|
1067 | AbsVertexSetPolarity(aux2, !polarity); |
---|
1068 | AbsVertexSetDepth(aux2, AbsVertexReadDepth(aux1) + 1); |
---|
1069 | AbsVertexSetType(aux2, fixedPoint_c); |
---|
1070 | AbsVertexSetVarId(aux2, variableId); |
---|
1071 | AbsVertexSetLeftKid(aux2, aux1); |
---|
1072 | AbsVertexSetFpVar(aux2, varVertex); |
---|
1073 | AbsVertexSetUseExtraCareSet(aux2, FALSE); |
---|
1074 | AbsVertexSetParent(aux1, aux2); |
---|
1075 | } |
---|
1076 | else { |
---|
1077 | AbsVertexSetUseExtraCareSet(aux2, FALSE); |
---|
1078 | AbsVertexFree(catalog, aux1, NIL(AbsVertexInfo_t)); |
---|
1079 | } |
---|
1080 | |
---|
1081 | /* Create the top most not vertex */ |
---|
1082 | result = AbsVertexCatalogFindOrAdd(catalog, not_c, polarity, aux2, |
---|
1083 | NIL(AbsVertexInfo_t), 0, NIL(char), |
---|
1084 | NIL(char)); |
---|
1085 | if (AbsVertexReadType(result) == false_c) { |
---|
1086 | AbsVertexSetPolarity(result, polarity); |
---|
1087 | AbsVertexSetDepth(result, AbsVertexReadDepth(aux2) + 1); |
---|
1088 | AbsVertexSetType(result, not_c); |
---|
1089 | AbsVertexSetLeftKid(result, aux2); |
---|
1090 | AbsVertexSetParent(aux2, result); |
---|
1091 | } |
---|
1092 | else { |
---|
1093 | AbsVertexFree(catalog, aux2, NIL(AbsVertexInfo_t)); |
---|
1094 | } |
---|
1095 | |
---|
1096 | return result; |
---|
1097 | } /* End of TranslateCtlEG */ |
---|
1098 | |
---|
1099 | /**Function******************************************************************** |
---|
1100 | |
---|
1101 | Synopsis [Computes the operational graph representation of a predicate of the |
---|
1102 | form EGfair(f)] |
---|
1103 | |
---|
1104 | SideEffects [] |
---|
1105 | |
---|
1106 | SeeAlso [TranslateCtlSubFormula] |
---|
1107 | |
---|
1108 | ******************************************************************************/ |
---|
1109 | static AbsVertexInfo_t * |
---|
1110 | TranslateCtlEGFair( |
---|
1111 | AbsVertexCatalog_t *catalog, |
---|
1112 | Ctlp_Formula_t *formula, |
---|
1113 | array_t *fairArray, |
---|
1114 | AbsVertexInfo_t *fairPositive, |
---|
1115 | AbsVertexInfo_t *fairNegative, |
---|
1116 | int polarity, |
---|
1117 | int *uniqueIds) |
---|
1118 | { |
---|
1119 | AbsVertexInfo_t *result; |
---|
1120 | AbsVertexInfo_t *childResult; |
---|
1121 | |
---|
1122 | if (Ctlp_FormulaReadType(Ctlp_FormulaReadLeftChild(formula)) == Ctlp_TRUE_c) { |
---|
1123 | if (polarity) { |
---|
1124 | result = fairPositive; |
---|
1125 | AbsVertexReadRefs(fairPositive)++; |
---|
1126 | } |
---|
1127 | else { |
---|
1128 | result = fairNegative; |
---|
1129 | AbsVertexReadRefs(fairNegative)++; |
---|
1130 | } |
---|
1131 | } |
---|
1132 | else { |
---|
1133 | childResult = TranslateCtlSubFormula(catalog, |
---|
1134 | Ctlp_FormulaReadLeftChild(formula), |
---|
1135 | fairArray, fairPositive, fairNegative, |
---|
1136 | polarity, uniqueIds); |
---|
1137 | |
---|
1138 | result = ComputeFairPredicate(catalog, childResult, fairArray, polarity, |
---|
1139 | uniqueIds); |
---|
1140 | } |
---|
1141 | |
---|
1142 | return result; |
---|
1143 | } /* End of TranslateCtlEGFair */ |
---|
1144 | |
---|
1145 | /**Function******************************************************************** |
---|
1146 | |
---|
1147 | Synopsis [Computes the operational graph representation of the predicate |
---|
1148 | EX(p)] |
---|
1149 | |
---|
1150 | SideEffects [] |
---|
1151 | |
---|
1152 | SeeAlso [TranslateCtlSubFormula] |
---|
1153 | |
---|
1154 | ******************************************************************************/ |
---|
1155 | static AbsVertexInfo_t * |
---|
1156 | TranslateCtlEX( |
---|
1157 | AbsVertexCatalog_t *catalog, |
---|
1158 | Ctlp_Formula_t *formula, |
---|
1159 | array_t *fairArray, |
---|
1160 | AbsVertexInfo_t *fairPositive, |
---|
1161 | AbsVertexInfo_t *fairNegative, |
---|
1162 | int polarity, |
---|
1163 | int *uniqueIds) |
---|
1164 | { |
---|
1165 | AbsVertexInfo_t *result; |
---|
1166 | AbsVertexInfo_t *childResult; |
---|
1167 | |
---|
1168 | /* Translate the sub-formula regardless */ |
---|
1169 | childResult = TranslateCtlSubFormula(catalog, |
---|
1170 | Ctlp_FormulaReadLeftChild(formula), |
---|
1171 | fairArray, fairPositive, fairNegative, |
---|
1172 | polarity, uniqueIds); |
---|
1173 | |
---|
1174 | /* check if there are fairness constraints */ |
---|
1175 | if (fairPositive != NIL(AbsVertexInfo_t)) { |
---|
1176 | AbsVertexInfo_t *fairness; |
---|
1177 | AbsVertexInfo_t *conjunction; |
---|
1178 | |
---|
1179 | /* The negative polarity version of the fairness must be present as well */ |
---|
1180 | assert(fairNegative != NIL(AbsVertexInfo_t)); |
---|
1181 | |
---|
1182 | /* Select the apropriate representation of the fairness constraint */ |
---|
1183 | if (polarity) { |
---|
1184 | fairness = fairPositive; |
---|
1185 | } |
---|
1186 | else { |
---|
1187 | fairness = fairNegative; |
---|
1188 | } |
---|
1189 | AbsVertexReadRefs(fairness)++; |
---|
1190 | |
---|
1191 | conjunction = AbsVertexCatalogFindOrAdd(catalog, and_c, polarity, |
---|
1192 | childResult, fairness, 0, NIL(char), |
---|
1193 | NIL(char)); |
---|
1194 | |
---|
1195 | if (AbsVertexReadType(conjunction) == false_c) { |
---|
1196 | int leftDepth; |
---|
1197 | int rightDepth; |
---|
1198 | |
---|
1199 | leftDepth = AbsVertexReadDepth(childResult); |
---|
1200 | rightDepth = AbsVertexReadDepth(fairness); |
---|
1201 | |
---|
1202 | AbsVertexSetPolarity(conjunction, polarity); |
---|
1203 | if (leftDepth > rightDepth) { |
---|
1204 | AbsVertexSetDepth(conjunction, leftDepth + 1); |
---|
1205 | } |
---|
1206 | else { |
---|
1207 | AbsVertexSetDepth(conjunction, rightDepth + 1); |
---|
1208 | } |
---|
1209 | AbsVertexSetType(conjunction, and_c); |
---|
1210 | AbsVertexSetLeftKid(conjunction, childResult); |
---|
1211 | AbsVertexSetRightKid(conjunction, fairness); |
---|
1212 | AbsVertexSetParent(childResult, conjunction); |
---|
1213 | AbsVertexSetParent(fairness, conjunction); |
---|
1214 | } |
---|
1215 | else { |
---|
1216 | AbsVertexFree(catalog, childResult, NIL(AbsVertexInfo_t)); |
---|
1217 | AbsVertexFree(catalog, fairness, NIL(AbsVertexInfo_t)); |
---|
1218 | } |
---|
1219 | childResult = conjunction; |
---|
1220 | } |
---|
1221 | |
---|
1222 | /* Create the preImage vertex */ |
---|
1223 | result = AbsVertexCatalogFindOrAdd(catalog, preImage_c, polarity, |
---|
1224 | childResult, NIL(AbsVertexInfo_t), 0, |
---|
1225 | NIL(char), NIL(char)); |
---|
1226 | if (AbsVertexReadType(result) == false_c) { |
---|
1227 | AbsVertexSetPolarity(result, polarity); |
---|
1228 | AbsVertexSetDepth(result, AbsVertexReadDepth(childResult) + 1); |
---|
1229 | AbsVertexSetType(result, preImage_c); |
---|
1230 | AbsVertexSetLeftKid(result, childResult); |
---|
1231 | AbsVertexSetParent(childResult, result); |
---|
1232 | } |
---|
1233 | else { |
---|
1234 | AbsVertexFree(catalog, childResult, NIL(AbsVertexInfo_t)); |
---|
1235 | } |
---|
1236 | |
---|
1237 | return result; |
---|
1238 | } /* End of TranslateCtlEX */ |
---|
1239 | |
---|
1240 | /**Function******************************************************************** |
---|
1241 | |
---|
1242 | Synopsis [Computes the operational graph representation of the predicate |
---|
1243 | NOT(p)] |
---|
1244 | |
---|
1245 | SideEffects [] |
---|
1246 | |
---|
1247 | SeeAlso [TranslateCtlSubFormula] |
---|
1248 | |
---|
1249 | ******************************************************************************/ |
---|
1250 | static AbsVertexInfo_t * |
---|
1251 | TranslateCtlNOT( |
---|
1252 | AbsVertexCatalog_t *catalog, |
---|
1253 | Ctlp_Formula_t *formula, |
---|
1254 | array_t *fairArray, |
---|
1255 | AbsVertexInfo_t *fairPositive, |
---|
1256 | AbsVertexInfo_t *fairNegative, |
---|
1257 | int polarity, |
---|
1258 | int *uniqueIds) |
---|
1259 | { |
---|
1260 | AbsVertexInfo_t *result; |
---|
1261 | AbsVertexInfo_t *childResult; |
---|
1262 | |
---|
1263 | childResult = TranslateCtlSubFormula(catalog, |
---|
1264 | Ctlp_FormulaReadLeftChild(formula), |
---|
1265 | fairArray, fairPositive, fairNegative, |
---|
1266 | !polarity, uniqueIds); |
---|
1267 | |
---|
1268 | /* If the sub-formula's top vertex is a negation, eliminate the redundancy */ |
---|
1269 | if (AbsVertexReadType(childResult) == not_c) { |
---|
1270 | AbsVertexInfo_t *newResult; |
---|
1271 | |
---|
1272 | newResult = AbsVertexReadLeftKid(childResult); |
---|
1273 | AbsVertexReadRefs(newResult)++; |
---|
1274 | AbsVertexFree(catalog, childResult, NIL(AbsVertexInfo_t)); |
---|
1275 | |
---|
1276 | return newResult; |
---|
1277 | } |
---|
1278 | |
---|
1279 | /* Create the not vertex */ |
---|
1280 | result = AbsVertexCatalogFindOrAdd(catalog, not_c, polarity, childResult, |
---|
1281 | NIL(AbsVertexInfo_t), 0, NIL(char), |
---|
1282 | NIL(char)); |
---|
1283 | if (AbsVertexReadType(result) == false_c) { |
---|
1284 | AbsVertexSetPolarity(result, polarity); |
---|
1285 | AbsVertexSetDepth(result, AbsVertexReadDepth(childResult) + 1); |
---|
1286 | AbsVertexSetType(result, not_c); |
---|
1287 | AbsVertexSetLeftKid(result, childResult); |
---|
1288 | AbsVertexSetParent(childResult, result); |
---|
1289 | } |
---|
1290 | else { |
---|
1291 | AbsVertexFree(catalog, childResult, NIL(AbsVertexInfo_t)); |
---|
1292 | } |
---|
1293 | |
---|
1294 | return result; |
---|
1295 | } /* End of TranslateCtlNOT */ |
---|
1296 | |
---|
1297 | /**Function******************************************************************** |
---|
1298 | |
---|
1299 | Synopsis [Computes the operational graph representation of the predicate |
---|
1300 | of the form p -> q] |
---|
1301 | |
---|
1302 | SideEffects [] |
---|
1303 | |
---|
1304 | SeeAlso [TranslateCtlSubFormula] |
---|
1305 | |
---|
1306 | ******************************************************************************/ |
---|
1307 | static AbsVertexInfo_t * |
---|
1308 | TranslateCtlTHEN( |
---|
1309 | AbsVertexCatalog_t *catalog, |
---|
1310 | Ctlp_Formula_t *formula, |
---|
1311 | array_t *fairArray, |
---|
1312 | AbsVertexInfo_t *fairPositive, |
---|
1313 | AbsVertexInfo_t *fairNegative, |
---|
1314 | int polarity, |
---|
1315 | int *uniqueIds) |
---|
1316 | { |
---|
1317 | AbsVertexInfo_t *result; |
---|
1318 | AbsVertexInfo_t *leftResult, *rightResult; |
---|
1319 | AbsVertexInfo_t *aux1; |
---|
1320 | AbsVertexInfo_t *aux2; |
---|
1321 | |
---|
1322 | leftResult = TranslateCtlSubFormula(catalog, |
---|
1323 | Ctlp_FormulaReadLeftChild(formula), |
---|
1324 | fairArray, fairPositive, fairNegative, |
---|
1325 | !polarity, uniqueIds); |
---|
1326 | rightResult= TranslateCtlSubFormula(catalog, |
---|
1327 | Ctlp_FormulaReadRightChild(formula), |
---|
1328 | fairArray, fairPositive, fairNegative, |
---|
1329 | polarity, uniqueIds); |
---|
1330 | |
---|
1331 | /* If the sub-formula's top vertex is a negation, eliminate the redundancy */ |
---|
1332 | if (AbsVertexReadType(rightResult) == not_c) { |
---|
1333 | AbsVertexInfo_t *newResult; |
---|
1334 | |
---|
1335 | newResult = AbsVertexReadLeftKid(rightResult); |
---|
1336 | AbsVertexReadRefs(newResult)++; |
---|
1337 | AbsVertexFree(catalog, rightResult, NIL(AbsVertexInfo_t)); |
---|
1338 | aux1 = newResult; |
---|
1339 | } |
---|
1340 | else { |
---|
1341 | /* Vertex negating first operand */ |
---|
1342 | aux1 = AbsVertexCatalogFindOrAdd(catalog, not_c, !polarity, rightResult, |
---|
1343 | NIL(AbsVertexInfo_t), 0, NIL(char), |
---|
1344 | NIL(char)); |
---|
1345 | if (AbsVertexReadType(aux1) == false_c) { |
---|
1346 | AbsVertexSetPolarity(aux1, !polarity); |
---|
1347 | AbsVertexSetDepth(aux1, AbsVertexReadDepth(rightResult) + 1); |
---|
1348 | AbsVertexSetType(aux1, not_c); |
---|
1349 | AbsVertexSetLeftKid(aux1, rightResult); |
---|
1350 | AbsVertexSetParent(rightResult, aux1); |
---|
1351 | } |
---|
1352 | else { |
---|
1353 | AbsVertexFree(catalog, rightResult, NIL(AbsVertexInfo_t)); |
---|
1354 | } |
---|
1355 | } |
---|
1356 | |
---|
1357 | /* Result node holding the and of both operands */ |
---|
1358 | aux2 = AbsVertexCatalogFindOrAdd(catalog, and_c, !polarity, leftResult, |
---|
1359 | aux1, 0, NIL(char), NIL(char)); |
---|
1360 | if (AbsVertexReadType(aux2) == false_c) { |
---|
1361 | AbsVertexSetPolarity(aux2, !polarity); |
---|
1362 | if (AbsVertexReadDepth(leftResult) > AbsVertexReadDepth(aux1)) { |
---|
1363 | AbsVertexSetDepth(aux2, AbsVertexReadDepth(leftResult) + 1); |
---|
1364 | } |
---|
1365 | else { |
---|
1366 | AbsVertexSetDepth(aux2, AbsVertexReadDepth(aux1) + 1); |
---|
1367 | } |
---|
1368 | AbsVertexSetType(aux2, and_c); |
---|
1369 | AbsVertexSetLeftKid(aux2, leftResult); |
---|
1370 | AbsVertexSetRightKid(aux2, aux1); |
---|
1371 | AbsVertexSetParent(aux1, aux2); |
---|
1372 | AbsVertexSetParent(leftResult, aux2); |
---|
1373 | } |
---|
1374 | else { |
---|
1375 | AbsVertexFree(catalog, leftResult, NIL(AbsVertexInfo_t)); |
---|
1376 | AbsVertexFree(catalog, aux1, NIL(AbsVertexInfo_t)); |
---|
1377 | } |
---|
1378 | |
---|
1379 | /* Top vertex negation of the conjunction */ |
---|
1380 | result = AbsVertexCatalogFindOrAdd(catalog, not_c, polarity, aux2, |
---|
1381 | NIL(AbsVertexInfo_t), 0, NIL(char), |
---|
1382 | NIL(char)); |
---|
1383 | if (AbsVertexReadType(result) == false_c) { |
---|
1384 | AbsVertexSetPolarity(result, polarity); |
---|
1385 | AbsVertexSetDepth(result, AbsVertexReadDepth(aux2) + 1); |
---|
1386 | AbsVertexSetType(result, not_c); |
---|
1387 | AbsVertexSetLeftKid(result, aux2); |
---|
1388 | AbsVertexSetParent(aux2, result); |
---|
1389 | } |
---|
1390 | else { |
---|
1391 | AbsVertexFree(catalog, aux2, NIL(AbsVertexInfo_t)); |
---|
1392 | } |
---|
1393 | |
---|
1394 | return result; |
---|
1395 | } /* End of TranslateCtlTHEN */ |
---|
1396 | |
---|
1397 | /**Function******************************************************************** |
---|
1398 | |
---|
1399 | Synopsis [Computes the operational graph representation of the predicate of |
---|
1400 | the form p AND q] |
---|
1401 | |
---|
1402 | SideEffects [] |
---|
1403 | |
---|
1404 | SeeAlso [TranslateCtlSubFormula] |
---|
1405 | |
---|
1406 | ******************************************************************************/ |
---|
1407 | static AbsVertexInfo_t * |
---|
1408 | TranslateCtlAND( |
---|
1409 | AbsVertexCatalog_t *catalog, |
---|
1410 | Ctlp_Formula_t *formula, |
---|
1411 | array_t *fairArray, |
---|
1412 | AbsVertexInfo_t *fairPositive, |
---|
1413 | AbsVertexInfo_t *fairNegative, |
---|
1414 | int polarity, |
---|
1415 | int *uniqueIds) |
---|
1416 | { |
---|
1417 | AbsVertexInfo_t *result; |
---|
1418 | AbsVertexInfo_t *leftResult, *rightResult; |
---|
1419 | int leftDepth; |
---|
1420 | int rightDepth; |
---|
1421 | |
---|
1422 | leftResult = TranslateCtlSubFormula(catalog, |
---|
1423 | Ctlp_FormulaReadLeftChild(formula), |
---|
1424 | fairArray, fairPositive, fairNegative, |
---|
1425 | polarity, uniqueIds); |
---|
1426 | rightResult= TranslateCtlSubFormula(catalog, |
---|
1427 | Ctlp_FormulaReadRightChild(formula), |
---|
1428 | fairArray, fairPositive, fairNegative, |
---|
1429 | polarity, uniqueIds); |
---|
1430 | |
---|
1431 | /* Read the depths */ |
---|
1432 | leftDepth = AbsVertexReadDepth(leftResult); |
---|
1433 | rightDepth = AbsVertexReadDepth(rightResult); |
---|
1434 | |
---|
1435 | result = AbsVertexCatalogFindOrAdd(catalog, and_c, polarity, leftResult, |
---|
1436 | rightResult, 0, NIL(char), NIL(char)); |
---|
1437 | if (AbsVertexReadType(result) == false_c) { |
---|
1438 | AbsVertexSetPolarity(result, polarity); |
---|
1439 | if (leftDepth > rightDepth) { |
---|
1440 | AbsVertexSetDepth(result, leftDepth + 1); |
---|
1441 | } |
---|
1442 | else { |
---|
1443 | AbsVertexSetDepth(result, rightDepth + 1); |
---|
1444 | } |
---|
1445 | AbsVertexSetType(result, and_c); |
---|
1446 | AbsVertexSetLeftKid(result, leftResult); |
---|
1447 | AbsVertexSetRightKid(result, rightResult); |
---|
1448 | AbsVertexSetParent(leftResult, result); |
---|
1449 | AbsVertexSetParent(rightResult, result); |
---|
1450 | } |
---|
1451 | else { |
---|
1452 | AbsVertexFree(catalog, leftResult, NIL(AbsVertexInfo_t)); |
---|
1453 | AbsVertexFree(catalog, rightResult, NIL(AbsVertexInfo_t)); |
---|
1454 | } |
---|
1455 | |
---|
1456 | return result; |
---|
1457 | } /* End of TranslateCtlAND */ |
---|
1458 | |
---|
1459 | /**Function******************************************************************** |
---|
1460 | |
---|
1461 | Synopsis [Computes the operational graph representation of the predicate of |
---|
1462 | the for p OR q] |
---|
1463 | |
---|
1464 | SideEffects [] |
---|
1465 | |
---|
1466 | SeeAlso [TranslateCtlSubFormula] |
---|
1467 | |
---|
1468 | ******************************************************************************/ |
---|
1469 | static AbsVertexInfo_t * |
---|
1470 | TranslateCtlOR( |
---|
1471 | AbsVertexCatalog_t *catalog, |
---|
1472 | Ctlp_Formula_t *formula, |
---|
1473 | array_t *fairArray, |
---|
1474 | AbsVertexInfo_t *fairPositive, |
---|
1475 | AbsVertexInfo_t *fairNegative, |
---|
1476 | int polarity, |
---|
1477 | int *uniqueIds) |
---|
1478 | { |
---|
1479 | AbsVertexInfo_t *result; |
---|
1480 | AbsVertexInfo_t *leftResult, *rightResult; |
---|
1481 | AbsVertexInfo_t *aux1; |
---|
1482 | AbsVertexInfo_t *aux2; |
---|
1483 | AbsVertexInfo_t *aux3; |
---|
1484 | |
---|
1485 | leftResult = TranslateCtlSubFormula(catalog, |
---|
1486 | Ctlp_FormulaReadLeftChild(formula), |
---|
1487 | fairArray, fairPositive, fairNegative, |
---|
1488 | polarity, uniqueIds); |
---|
1489 | rightResult= TranslateCtlSubFormula(catalog, |
---|
1490 | Ctlp_FormulaReadRightChild(formula), |
---|
1491 | fairArray, fairPositive, fairNegative, |
---|
1492 | polarity, uniqueIds); |
---|
1493 | |
---|
1494 | /* If the sub-formula's top vertex is a negation, eliminate the redundancy */ |
---|
1495 | if (AbsVertexReadType(leftResult) == not_c) { |
---|
1496 | AbsVertexInfo_t *newResult; |
---|
1497 | |
---|
1498 | newResult = AbsVertexReadLeftKid(leftResult); |
---|
1499 | AbsVertexReadRefs(newResult)++; |
---|
1500 | AbsVertexFree(catalog, leftResult, NIL(AbsVertexInfo_t)); |
---|
1501 | aux1 = newResult; |
---|
1502 | } |
---|
1503 | else { |
---|
1504 | /* Vertex negating first operand */ |
---|
1505 | aux1 = AbsVertexCatalogFindOrAdd(catalog, not_c, !polarity, leftResult, |
---|
1506 | NIL(AbsVertexInfo_t), 0, NIL(char), |
---|
1507 | NIL(char)); |
---|
1508 | if (AbsVertexReadType(aux1) == false_c) { |
---|
1509 | AbsVertexSetPolarity(aux1, !polarity); |
---|
1510 | AbsVertexSetDepth(aux1, AbsVertexReadDepth(leftResult) + 1); |
---|
1511 | AbsVertexSetType(aux1, not_c); |
---|
1512 | AbsVertexSetLeftKid(aux1, leftResult); |
---|
1513 | AbsVertexSetParent(leftResult, aux1); |
---|
1514 | } |
---|
1515 | else { |
---|
1516 | AbsVertexFree(catalog, leftResult, NIL(AbsVertexInfo_t)); |
---|
1517 | } |
---|
1518 | } |
---|
1519 | |
---|
1520 | if (AbsVertexReadType(rightResult) == not_c) { |
---|
1521 | AbsVertexInfo_t *newResult; |
---|
1522 | |
---|
1523 | newResult = AbsVertexReadLeftKid(rightResult); |
---|
1524 | AbsVertexReadRefs(newResult)++; |
---|
1525 | AbsVertexFree(catalog, rightResult, NIL(AbsVertexInfo_t)); |
---|
1526 | aux2 = newResult; |
---|
1527 | } |
---|
1528 | else { |
---|
1529 | /* Vertex negating second operand */ |
---|
1530 | aux2 = AbsVertexCatalogFindOrAdd(catalog, not_c, !polarity, rightResult, |
---|
1531 | NIL(AbsVertexInfo_t), 0, NIL(char), |
---|
1532 | NIL(char)); |
---|
1533 | if (AbsVertexReadType(aux2) == false_c) { |
---|
1534 | AbsVertexSetPolarity(aux2, !polarity); |
---|
1535 | AbsVertexSetDepth(aux2, AbsVertexReadDepth(rightResult) + 1); |
---|
1536 | AbsVertexSetType(aux2, not_c); |
---|
1537 | AbsVertexSetLeftKid(aux2, rightResult); |
---|
1538 | AbsVertexSetParent(rightResult, aux2); |
---|
1539 | } |
---|
1540 | else { |
---|
1541 | AbsVertexFree(catalog, rightResult, NIL(AbsVertexInfo_t)); |
---|
1542 | } |
---|
1543 | } |
---|
1544 | |
---|
1545 | /* Vertex taking the conjunction */ |
---|
1546 | aux3 = AbsVertexCatalogFindOrAdd(catalog, and_c, !polarity, aux1, aux2, |
---|
1547 | 0, NIL(char), NIL(char)); |
---|
1548 | if (AbsVertexReadType(aux3) == false_c) { |
---|
1549 | AbsVertexSetPolarity(aux3, !polarity); |
---|
1550 | if (AbsVertexReadDepth(aux1) > AbsVertexReadDepth(aux2)) { |
---|
1551 | AbsVertexSetDepth(aux3, AbsVertexReadDepth(aux1) + 1); |
---|
1552 | } |
---|
1553 | else { |
---|
1554 | AbsVertexSetDepth(aux3, AbsVertexReadDepth(aux2) + 1); |
---|
1555 | } |
---|
1556 | AbsVertexSetType(aux3, and_c); |
---|
1557 | AbsVertexSetLeftKid(aux3, aux1); |
---|
1558 | AbsVertexSetRightKid(aux3, aux2); |
---|
1559 | AbsVertexSetParent(aux1, aux3); |
---|
1560 | AbsVertexSetParent(aux2, aux3); |
---|
1561 | } |
---|
1562 | else { |
---|
1563 | AbsVertexFree(catalog, aux1, NIL(AbsVertexInfo_t)); |
---|
1564 | AbsVertexFree(catalog, aux2, NIL(AbsVertexInfo_t)); |
---|
1565 | } |
---|
1566 | |
---|
1567 | /* Top vertex negation of the conjunction */ |
---|
1568 | result = AbsVertexCatalogFindOrAdd(catalog, not_c, polarity, aux3, |
---|
1569 | NIL(AbsVertexInfo_t), 0, NIL(char), |
---|
1570 | NIL(char)); |
---|
1571 | if (AbsVertexReadType(result) == false_c) { |
---|
1572 | AbsVertexSetPolarity(result, polarity); |
---|
1573 | AbsVertexSetDepth(result, AbsVertexReadDepth(aux3) + 1); |
---|
1574 | AbsVertexSetType(result, not_c); |
---|
1575 | AbsVertexSetLeftKid(result, aux3); |
---|
1576 | AbsVertexSetParent(aux3, result); |
---|
1577 | } |
---|
1578 | else { |
---|
1579 | AbsVertexFree(catalog, aux3, NIL(AbsVertexInfo_t)); |
---|
1580 | } |
---|
1581 | |
---|
1582 | return result; |
---|
1583 | } /* End of TranslateCtlOR */ |
---|
1584 | |
---|
1585 | /**Function******************************************************************** |
---|
1586 | |
---|
1587 | Synopsis [Given an array containing vertices, creates the conjunction of all |
---|
1588 | of them.] |
---|
1589 | |
---|
1590 | SideEffects [] |
---|
1591 | |
---|
1592 | SeeAlso [ComputeFairPredicate] |
---|
1593 | |
---|
1594 | ******************************************************************************/ |
---|
1595 | static AbsVertexInfo_t * |
---|
1596 | CreateConjunctionChain( |
---|
1597 | AbsVertexCatalog_t *catalog, |
---|
1598 | array_t *conjunctions, |
---|
1599 | int polarity) |
---|
1600 | { |
---|
1601 | AbsVertexInfo_t *aux1; |
---|
1602 | AbsVertexInfo_t *aux2; |
---|
1603 | AbsVertexInfo_t *aux3; |
---|
1604 | int i; |
---|
1605 | |
---|
1606 | assert(conjunctions != NIL(array_t)); |
---|
1607 | |
---|
1608 | aux1 = array_fetch(AbsVertexInfo_t *, conjunctions, 0); |
---|
1609 | AbsVertexReadRefs(aux1)++; |
---|
1610 | |
---|
1611 | if (array_n(conjunctions) == 1) { |
---|
1612 | return aux1; |
---|
1613 | } |
---|
1614 | |
---|
1615 | for (i=1; i<array_n(conjunctions); i++) { |
---|
1616 | aux2 = array_fetch(AbsVertexInfo_t *, conjunctions, i); |
---|
1617 | AbsVertexReadRefs(aux2)++; |
---|
1618 | |
---|
1619 | aux3 = AbsVertexCatalogFindOrAdd(catalog, and_c, polarity, aux1, aux2, 0, |
---|
1620 | NIL(char), NIL(char)); |
---|
1621 | |
---|
1622 | if (AbsVertexReadType(aux3) == false_c) { |
---|
1623 | AbsVertexSetPolarity(aux3, polarity); |
---|
1624 | if (AbsVertexReadDepth(aux1) < AbsVertexReadDepth(aux2)) { |
---|
1625 | AbsVertexSetDepth(aux3, AbsVertexReadDepth(aux2) + 1); |
---|
1626 | } |
---|
1627 | else { |
---|
1628 | AbsVertexSetDepth(aux3, AbsVertexReadDepth(aux1) + 1); |
---|
1629 | } |
---|
1630 | AbsVertexSetType(aux3, and_c); |
---|
1631 | AbsVertexSetLeftKid(aux3, aux1); |
---|
1632 | AbsVertexSetRightKid(aux3, aux2); |
---|
1633 | AbsVertexSetParent(aux1, aux3); |
---|
1634 | AbsVertexSetParent(aux2, aux3); |
---|
1635 | } |
---|
1636 | else { |
---|
1637 | AbsVertexFree(catalog, aux1, NIL(AbsVertexInfo_t)); |
---|
1638 | AbsVertexFree(catalog, aux2, NIL(AbsVertexInfo_t)); |
---|
1639 | } |
---|
1640 | |
---|
1641 | aux1 = aux3; |
---|
1642 | } |
---|
1643 | |
---|
1644 | return aux1; |
---|
1645 | } /* End of CreateConjunctionChain */ |
---|