bool STPSolverImpl::computeTruth(const Query &query, bool &isValid) {
std::vector<const Array *> objects;
std::vector<std::vector<unsigned char> > values;
bool hasSolution;
if (!computeInitialValues(query, objects, values, hasSolution))
return false;
isValid = !hasSolution;
return true;
}
// TODO: Use model evaluation in Z3
bool Z3BaseSolverImpl::computeValue(const Query &query, ref<Expr> &result) {
std::vector<const Array*> objects;
std::vector<std::vector<unsigned char> > values;
bool hasSolution;
findSymbolicObjects(query.expr, objects);
if (!computeInitialValues(query.withFalse(), objects, values, hasSolution))
return false;
assert(hasSolution && "state has invalid constraint set");
Assignment a(objects, values);
result = a.evaluate(query.expr);
return true;
}
bool MetaSMTSolverImpl<SolverContext>::computeTruth(const Query &query,
bool &isValid) {
bool success = false;
std::vector<const Array *> objects;
std::vector<std::vector<unsigned char> > values;
bool hasSolution;
if (computeInitialValues(query, objects, values, hasSolution)) {
// query.expr is valid iff !query.expr is not satisfiable
isValid = !hasSolution;
success = true;
}
return (success);
}
bool Z3SolverImpl::computeValue(const Query &query, ref<Expr> &result) {
std::vector<const Array *> objects;
std::vector<std::vector<unsigned char> > values;
bool hasSolution;
// Find the object used in the expression, and compute an assignment
// for them.
findSymbolicObjects(query.expr, objects);
if (!computeInitialValues(query.withFalse(), objects, values, hasSolution))
return false;
assert(hasSolution && "state has invalid constraint set");
// Evaluate the expression with the computed assignment.
Assignment a(objects, values);
result = a.evaluate(query.expr);
return true;
}
