Пример #1
0
    def assertConstraint(self, constraint, cfr):
        if Common.FLAG:
            SMTLib.toStr(constraint)

        if Options.PRODUCE_UNSAT_CORE:
            p = cfr.solver.convert(SMTLib.SMT_Bool("bool" + str(Common.getConstraintUID()) + "_" + str(self.assertID)))
            cfr.unsat_core_trackers.append(p)
            cfr.low_level_unsat_core_trackers[str(p)] = constraint
            cfr.unsat_map[str(p)] = self
            cfr.solver.add(SMTLib.SMT_Implies(p, constraint, unsat_core_implies=True))
        else:
            cfr.solver.add(constraint)
Пример #2
0
 def declpexpVisit(self, element):
     if Options.BREAK_QUANTIFIER_SYMMETRY:
         #TODO actually do this...
         sys.exit("BREAK_QUANTIFIER_SYMMETRY still unimplemented.")
         symmetryChecker = CheckFunctionSymmetry(self.cfr)
         visitors.Visitor.visit(symmetryChecker, element.bodyParentExp)
         isSymmetric = symmetryChecker.isSymmetric
         # print(symmetryChecker.isSymmetric)
     else:
         isSymmetric = False
     num_args = 0
     if element.declaration:
         visitors.Visitor.visit(self, element.declaration.body.iExp[0])
         if not self.currentConstraint.stack:
             return
         arg = self.currentConstraint.stack.pop()
         isDisjunct = element.declaration.isDisjunct
         for i in range(len(arg)):
             (combinations,
              ifconstraints) = self.createAllLocalsCombinations(
                  element.declaration.localDeclarations, arg[i], isDisjunct,
                  isSymmetric)
             if len(combinations) == 0:
                 if element.quantifier == "Some":
                     self.currentConstraint.stack.append(
                         [BoolArg(SMTLib.SMT_Bool(False))])
                 elif element.quantifier == "All":
                     self.currentConstraint.stack.append(
                         [BoolArg(SMTLib.SMT_Bool(True))])
                 return
             num_args = len(combinations[0])
             num_combinations = len(combinations)
             for i in combinations:
                 for j in range(num_args):
                     self.currentConstraint.addLocal(
                         element.declaration.localDeclarations[j].element,
                         [i[j]])
                 visitors.Visitor.visit(self, element.bodyParentExp)
             self.currentConstraint.addQuantifier(element.quantifier,
                                                  num_args,
                                                  num_combinations,
                                                  ifconstraints)
         exprArgList = []
         for i in range(len(arg)):
             exprArgList.insert(0, self.currentConstraint.stack.pop()[0])
         self.currentConstraint.addArg(exprArgList)
     else:
         visitors.Visitor.visit(self, element.bodyParentExp)
         num_args = 1
         num_combinations = 1
         ifconstraints = []
         exprList = self.currentConstraint.stack.pop()
         exprArgList = []
         for i in exprList:
             self.currentConstraint.stack.append([i])
             self.currentConstraint.addQuantifier(element.quantifier,
                                                  num_args,
                                                  num_combinations,
                                                  ifconstraints)
             exprArgList.append(self.currentConstraint.stack.pop()[0])
         self.currentConstraint.addArg(exprArgList)