Revert "2"
This reverts commit db386b2a7f.
That commit was half-done and not intended to be merged.
This commit is contained in:
Daniel Marjamäki
parent
8d9f0b3528
commit
7e9cbda2d5
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@ -1029,16 +1029,10 @@ std::string ExprEngine::IntegerTruncation::getSymbolicExpression() const
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#ifdef USE_Z3
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class ExprData {
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public:
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struct ExprData {
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typedef std::map<std::string, z3::expr> ValueExpr;
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typedef std::vector<z3::expr> AssertionList;
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class BailoutValueException {
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public:
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BailoutValueException() {}
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};
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z3::context context;
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ValueExpr valueExpr;
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AssertionList assertionList;
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@ -1048,15 +1042,6 @@ public:
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solver.add(assertExpr);
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}
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void addConstraints(z3::solver &solver, const Data* data) {
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for (auto constraint : data->constraints) {
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try {
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solver.add(getConstraintExpr(constraint));
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} catch (const BailoutValueException &) {
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}
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}
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}
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z3::expr addInt(const std::string &name, int128_t minValue, int128_t maxValue) {
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z3::expr e = context.int_const(name.c_str());
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valueExpr.emplace(name, e);
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@ -1123,8 +1108,6 @@ public:
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z3::expr getExpr(ExprEngine::ValuePtr v) {
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if (!v)
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throw ExprEngineException(nullptr, "Can not solve expressions, operand value is null");
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if (v->type == ExprEngine::ValueType::BailoutValue)
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throw BailoutValueException();
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if (auto intRange = std::dynamic_pointer_cast<ExprEngine::IntRange>(v)) {
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if (intRange->name[0] != '$')
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#if Z3_VERSION_INT >= GET_VERSION_INT(4,7,1)
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@ -1179,6 +1162,7 @@ public:
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}
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private:
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z3::expr bool_expr(z3::expr e) {
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if (e.is_bool())
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return e;
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@ -1207,7 +1191,8 @@ bool ExprEngine::IntRange::isEqual(DataBase *dataBase, int value) const
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z3::solver solver(exprData.context);
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try {
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z3::expr e = exprData.addInt(name, minValue, maxValue);
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exprData.addConstraints(solver, data);
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for (auto constraint : dynamic_cast<const Data *>(dataBase)->constraints)
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solver.add(exprData.getConstraintExpr(constraint));
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exprData.addAssertions(solver);
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solver.add(e == value);
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return solver.check() == z3::sat;
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@ -1235,7 +1220,8 @@ bool ExprEngine::IntRange::isGreaterThan(DataBase *dataBase, int value) const
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z3::solver solver(exprData.context);
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try {
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z3::expr e = exprData.addInt(name, minValue, maxValue);
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exprData.addConstraints(solver, data);
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for (auto constraint : dynamic_cast<const Data *>(dataBase)->constraints)
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solver.add(exprData.getConstraintExpr(constraint));
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exprData.addAssertions(solver);
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solver.add(e > value);
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return solver.check() == z3::sat;
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@ -1263,7 +1249,8 @@ bool ExprEngine::IntRange::isLessThan(DataBase *dataBase, int value) const
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z3::solver solver(exprData.context);
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try {
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z3::expr e = exprData.addInt(name, minValue, maxValue);
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exprData.addConstraints(solver, data);
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for (auto constraint : dynamic_cast<const Data *>(dataBase)->constraints)
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solver.add(exprData.getConstraintExpr(constraint));
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exprData.addAssertions(solver);
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solver.add(e < value);
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return solver.check() == z3::sat;
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@ -1292,7 +1279,8 @@ bool ExprEngine::FloatRange::isEqual(DataBase *dataBase, int value) const
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z3::solver solver(exprData.context);
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try {
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z3::expr e = exprData.addFloat(name);
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exprData.addConstraints(solver, data);
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for (auto constraint : dynamic_cast<const Data *>(dataBase)->constraints)
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solver.add(exprData.getConstraintExpr(constraint));
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exprData.addAssertions(solver);
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solver.add(e >= value && e <= value);
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return solver.check() != z3::unsat;
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@ -1322,7 +1310,8 @@ bool ExprEngine::FloatRange::isGreaterThan(DataBase *dataBase, int value) const
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z3::solver solver(exprData.context);
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try {
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z3::expr e = exprData.addFloat(name);
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exprData.addConstraints(solver, data);
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for (auto constraint : dynamic_cast<const Data *>(dataBase)->constraints)
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solver.add(exprData.getConstraintExpr(constraint));
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exprData.addAssertions(solver);
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solver.add(e > value);
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return solver.check() == z3::sat;
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@ -1352,7 +1341,8 @@ bool ExprEngine::FloatRange::isLessThan(DataBase *dataBase, int value) const
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z3::solver solver(exprData.context);
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try {
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z3::expr e = exprData.addFloat(name);
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exprData.addConstraints(solver, data);
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for (auto constraint : dynamic_cast<const Data *>(dataBase)->constraints)
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solver.add(exprData.getConstraintExpr(constraint));
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exprData.addAssertions(solver);
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solver.add(e < value);
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return solver.check() == z3::sat;
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@ -1373,7 +1363,8 @@ bool ExprEngine::BinOpResult::isEqual(ExprEngine::DataBase *dataBase, int value)
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ExprData exprData;
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z3::solver solver(exprData.context);
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z3::expr e = exprData.getExpr(this);
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exprData.addConstraints(solver, dynamic_cast<const Data *>(dataBase));
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for (auto constraint : dynamic_cast<const Data *>(dataBase)->constraints)
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solver.add(exprData.getConstraintExpr(constraint));
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exprData.addAssertions(solver);
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solver.add(e == value);
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return solver.check() == z3::sat;
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@ -1391,7 +1382,8 @@ bool ExprEngine::BinOpResult::isGreaterThan(ExprEngine::DataBase *dataBase, int
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ExprData exprData;
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z3::solver solver(exprData.context);
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z3::expr e = exprData.getExpr(this);
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exprData.addConstraints(solver, dynamic_cast<const Data *>(dataBase));
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for (auto constraint : dynamic_cast<const Data *>(dataBase)->constraints)
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solver.add(exprData.getConstraintExpr(constraint));
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exprData.addAssertions(solver);
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solver.add(e > value);
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return solver.check() == z3::sat;
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@ -1413,7 +1405,8 @@ bool ExprEngine::BinOpResult::isLessThan(ExprEngine::DataBase *dataBase, int val
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ExprData exprData;
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z3::solver solver(exprData.context);
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z3::expr e = exprData.getExpr(this);
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exprData.addConstraints(solver, dynamic_cast<const Data *>(dataBase));
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for (auto constraint : dynamic_cast<const Data *>(dataBase)->constraints)
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solver.add(exprData.getConstraintExpr(constraint));
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exprData.addAssertions(solver);
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solver.add(e < value);
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return solver.check() == z3::sat;
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@ -1435,7 +1428,8 @@ bool ExprEngine::BinOpResult::isTrue(ExprEngine::DataBase *dataBase) const
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ExprData exprData;
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z3::solver solver(exprData.context);
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z3::expr e = exprData.getExpr(this);
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exprData.addConstraints(solver, dynamic_cast<const Data *>(dataBase));
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for (auto constraint : dynamic_cast<const Data *>(dataBase)->constraints)
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solver.add(exprData.getConstraintExpr(constraint));
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exprData.addAssertions(solver);
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return solver.check() == z3::sat;
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} catch (const z3::exception &exception) {
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@ -1455,7 +1449,8 @@ std::string ExprEngine::BinOpResult::getExpr(ExprEngine::DataBase *dataBase) con
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ExprData exprData;
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z3::solver solver(exprData.context);
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z3::expr e = exprData.getExpr(this);
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exprData.addConstraints(solver, dynamic_cast<const Data *>(dataBase));
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for (auto constraint : dynamic_cast<const Data *>(dataBase)->constraints)
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solver.add(exprData.getConstraintExpr(constraint));
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exprData.addAssertions(solver);
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solver.add(e);
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std::ostringstream os;
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@ -1772,11 +1767,7 @@ static void checkContract(Data &data, const Token *tok, const Function *function
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z3::solver solver(exprData.context);
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try {
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// Invert contract, we want to know if the contract might not be met
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try {
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solver.add(z3::ite(exprData.getConstraintExpr(data.executeContract(function, executeExpression1)), exprData.context.bool_val(false), exprData.context.bool_val(true)));
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} catch (const ExprData::BailoutValueException &) {
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throw ExprEngineException(tok, "Internal error: Bailout value used");
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}
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solver.add(z3::ite(exprData.getConstraintExpr(data.executeContract(function, executeExpression1)), exprData.context.bool_val(false), exprData.context.bool_val(true)));
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bool bailoutValue = false;
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for (nonneg int i = 0; i < argValues.size(); ++i) {
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@ -1823,7 +1814,7 @@ static void checkContract(Data &data, const Token *tok, const Function *function
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}
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} catch (const z3::exception &exception) {
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std::cerr << "z3: " << exception << std::endl;
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} catch (const ExprEngineException &) {
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} catch (const ExprEngineException &e) {
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const char id[] = "internalErrorInExprEngine";
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const auto contractIt = data.settings->functionContracts.find(function->fullName());
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const std::string functionName = contractIt->first;
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