Merge pull request #10181 from ethereum/smt_user_timeout

[SMTChecker] User timeout option
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Leonardo 2020-11-04 10:55:28 +00:00 committed by GitHub
commit 62535c2fd4
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47 changed files with 436 additions and 62 deletions

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@ -6,6 +6,8 @@ Language Features:
Compiler Features:
* SMTChecker: Add division by zero checks in the CHC engine.
* SMTChecker: Support ``selector`` for expressions with value known at compile-time.
* Command Line Interface: New option ``--model-checker-timeout`` sets a timeout in milliseconds for each individual query performed by the SMTChecker.
* Standard JSON: New option ``modelCheckerSettings.timeout`` sets a timeout in milliseconds for each individual query performed by the SMTChecker.
Bugfixes:

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@ -346,7 +346,12 @@ Input Description
"modelCheckerSettings":
{
// Choose which model checker engine to use: all (default), bmc, chc, none.
"engine": "chc"
"engine": "chc",
// Timeout for each SMT query in milliseconds.
// If this option is not given, the SMTChecker will use a deterministic
// resource limit by default.
// A given timeout of 0 means no resource/time restrictions for any query.
"timeout": 20000
}
}

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@ -36,11 +36,13 @@ using namespace solidity::frontend;
using namespace solidity::smtutil;
CHCSmtLib2Interface::CHCSmtLib2Interface(
map<h256, string> const& _queryResponses,
ReadCallback::Callback const& _smtCallback
map<h256, string> _queryResponses,
ReadCallback::Callback _smtCallback,
optional<unsigned> _queryTimeout
):
m_smtlib2(make_unique<SMTLib2Interface>(_queryResponses, _smtCallback)),
m_queryResponses(_queryResponses),
CHCSolverInterface(_queryTimeout),
m_smtlib2(make_unique<SMTLib2Interface>(_queryResponses, _smtCallback, m_queryTimeout)),
m_queryResponses(move(_queryResponses)),
m_smtCallback(_smtCallback)
{
reset();
@ -51,6 +53,8 @@ void CHCSmtLib2Interface::reset()
m_accumulatedOutput.clear();
m_variables.clear();
m_unhandledQueries.clear();
if (m_queryTimeout)
write("(set-option :timeout " + to_string(*m_queryTimeout) + ")");
}
void CHCSmtLib2Interface::registerRelation(Expression const& _expr)

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@ -33,8 +33,9 @@ class CHCSmtLib2Interface: public CHCSolverInterface
{
public:
explicit CHCSmtLib2Interface(
std::map<util::h256, std::string> const& _queryResponses,
frontend::ReadCallback::Callback const& _smtCallback
std::map<util::h256, std::string> _queryResponses = {},
frontend::ReadCallback::Callback _smtCallback = {},
std::optional<unsigned> _queryTimeout = {}
);
void reset();

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@ -33,6 +33,8 @@ namespace solidity::smtutil
class CHCSolverInterface
{
public:
CHCSolverInterface(std::optional<unsigned> _queryTimeout = {}): m_queryTimeout(_queryTimeout) {}
virtual ~CHCSolverInterface() = default;
virtual void declareVariable(std::string const& _name, SortPointer const& _sort) = 0;
@ -56,6 +58,9 @@ public:
virtual std::pair<CheckResult, CexGraph> query(
Expression const& _expr
) = 0;
protected:
std::optional<unsigned> m_queryTimeout;
};
}

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@ -27,7 +27,8 @@ using namespace solidity;
using namespace solidity::util;
using namespace solidity::smtutil;
CVC4Interface::CVC4Interface():
CVC4Interface::CVC4Interface(optional<unsigned> _queryTimeout):
SolverInterface(_queryTimeout),
m_solver(&m_context)
{
reset();
@ -38,6 +39,9 @@ void CVC4Interface::reset()
m_variables.clear();
m_solver.reset();
m_solver.setOption("produce-models", true);
if (m_queryTimeout)
m_solver.setTimeLimit(*m_queryTimeout);
else
m_solver.setResourceLimit(resourceLimit);
}

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@ -40,7 +40,7 @@ namespace solidity::smtutil
class CVC4Interface: public SolverInterface, public boost::noncopyable
{
public:
CVC4Interface();
CVC4Interface(std::optional<unsigned> _queryTimeout = {});
void reset() override;

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@ -39,8 +39,10 @@ using namespace solidity::smtutil;
SMTLib2Interface::SMTLib2Interface(
map<h256, string> _queryResponses,
ReadCallback::Callback _smtCallback
ReadCallback::Callback _smtCallback,
optional<unsigned> _queryTimeout
):
SolverInterface(_queryTimeout),
m_queryResponses(move(_queryResponses)),
m_smtCallback(move(_smtCallback))
{
@ -54,6 +56,8 @@ void SMTLib2Interface::reset()
m_variables.clear();
m_userSorts.clear();
write("(set-option :produce-models true)");
if (m_queryTimeout)
write("(set-option :timeout " + to_string(*m_queryTimeout) + ")");
write("(set-logic ALL)");
}

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@ -40,7 +40,8 @@ class SMTLib2Interface: public SolverInterface, public boost::noncopyable
public:
explicit SMTLib2Interface(
std::map<util::h256, std::string> _queryResponses = {},
frontend::ReadCallback::Callback _smtCallback = {}
frontend::ReadCallback::Callback _smtCallback = {},
std::optional<unsigned> _queryTimeout = {}
);
void reset() override;

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@ -35,17 +35,19 @@ using namespace solidity::smtutil;
SMTPortfolio::SMTPortfolio(
map<h256, string> _smtlib2Responses,
frontend::ReadCallback::Callback _smtCallback,
[[maybe_unused]] SMTSolverChoice _enabledSolvers
)
[[maybe_unused]] SMTSolverChoice _enabledSolvers,
optional<unsigned> _queryTimeout
):
SolverInterface(_queryTimeout)
{
m_solvers.emplace_back(make_unique<SMTLib2Interface>(move(_smtlib2Responses), move(_smtCallback)));
m_solvers.emplace_back(make_unique<SMTLib2Interface>(move(_smtlib2Responses), move(_smtCallback), m_queryTimeout));
#ifdef HAVE_Z3
if (_enabledSolvers.z3)
m_solvers.emplace_back(make_unique<Z3Interface>());
m_solvers.emplace_back(make_unique<Z3Interface>(m_queryTimeout));
#endif
#ifdef HAVE_CVC4
if (_enabledSolvers.cvc4)
m_solvers.emplace_back(make_unique<CVC4Interface>());
m_solvers.emplace_back(make_unique<CVC4Interface>(m_queryTimeout));
#endif
}

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@ -42,7 +42,8 @@ public:
SMTPortfolio(
std::map<util::h256, std::string> _smtlib2Responses = {},
frontend::ReadCallback::Callback _smtCallback = {},
SMTSolverChoice _enabledSolvers = SMTSolverChoice::All()
SMTSolverChoice _enabledSolvers = SMTSolverChoice::All(),
std::optional<unsigned> _queryTimeout = {}
);
void reset() override;

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@ -374,6 +374,8 @@ DEV_SIMPLE_EXCEPTION(SolverError);
class SolverInterface
{
public:
SolverInterface(std::optional<unsigned> _queryTimeout = {}): m_queryTimeout(_queryTimeout) {}
virtual ~SolverInterface() = default;
virtual void reset() = 0;
@ -401,6 +403,9 @@ public:
/// @returns how many SMT solvers this interface has.
virtual unsigned solvers() { return 1; }
protected:
std::optional<unsigned> m_queryTimeout;
};
}

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@ -27,13 +27,18 @@ using namespace std;
using namespace solidity;
using namespace solidity::smtutil;
Z3CHCInterface::Z3CHCInterface():
m_z3Interface(make_unique<Z3Interface>()),
Z3CHCInterface::Z3CHCInterface(optional<unsigned> _queryTimeout):
CHCSolverInterface(_queryTimeout),
m_z3Interface(make_unique<Z3Interface>(m_queryTimeout)),
m_context(m_z3Interface->context()),
m_solver(*m_context)
{
// These need to be set globally.
z3::set_param("rewriter.pull_cheap_ite", true);
if (m_queryTimeout)
m_context->set("timeout", int(*m_queryTimeout));
else
z3::set_param("rlimit", Z3Interface::resourceLimit);
setSpacerOptions();
@ -97,7 +102,13 @@ pair<CheckResult, CHCSolverInterface::CexGraph> Z3CHCInterface::query(Expression
}
catch (z3::exception const& _err)
{
if (_err.msg() == string("max. resource limit exceeded"))
set<string> msgs{
/// Resource limit (rlimit) exhausted.
"max. resource limit exceeded",
/// User given timeout exhausted.
"canceled"
};
if (msgs.count(_err.msg()))
result = CheckResult::UNKNOWN;
else
result = CheckResult::ERROR;

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@ -33,7 +33,7 @@ namespace solidity::smtutil
class Z3CHCInterface: public CHCSolverInterface
{
public:
Z3CHCInterface();
Z3CHCInterface(std::optional<unsigned> _queryTimeout = {});
/// Forwards variable declaration to Z3Interface.
void declareVariable(std::string const& _name, SortPointer const& _sort) override;

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@ -27,11 +27,16 @@ using namespace std;
using namespace solidity::smtutil;
using namespace solidity::util;
Z3Interface::Z3Interface():
Z3Interface::Z3Interface(std::optional<unsigned> _queryTimeout):
SolverInterface(_queryTimeout),
m_solver(m_context)
{
// These need to be set globally.
z3::set_param("rewriter.pull_cheap_ite", true);
if (m_queryTimeout)
m_context.set("timeout", int(*m_queryTimeout));
else
z3::set_param("rlimit", resourceLimit);
}
@ -104,8 +109,18 @@ pair<CheckResult, vector<string>> Z3Interface::check(vector<Expression> const& _
values.push_back(util::toString(m.eval(toZ3Expr(e))));
}
}
catch (z3::exception const&)
catch (z3::exception const& _err)
{
set<string> msgs{
/// Resource limit (rlimit) exhausted.
"max. resource limit exceeded",
/// User given timeout exhausted.
"canceled"
};
if (msgs.count(_err.msg()))
result = CheckResult::UNKNOWN;
else
result = CheckResult::ERROR;
values.clear();
}

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@ -28,7 +28,7 @@ namespace solidity::smtutil
class Z3Interface: public SolverInterface, public boost::noncopyable
{
public:
Z3Interface();
Z3Interface(std::optional<unsigned> _queryTimeout = {});
void reset() override;

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@ -34,10 +34,11 @@ BMC::BMC(
ErrorReporter& _errorReporter,
map<h256, string> const& _smtlib2Responses,
ReadCallback::Callback const& _smtCallback,
smtutil::SMTSolverChoice _enabledSolvers
smtutil::SMTSolverChoice _enabledSolvers,
optional<unsigned> _timeout
):
SMTEncoder(_context),
m_interface(make_unique<smtutil::SMTPortfolio>(_smtlib2Responses, _smtCallback, _enabledSolvers)),
m_interface(make_unique<smtutil::SMTPortfolio>(_smtlib2Responses, _smtCallback, _enabledSolvers, _timeout)),
m_outerErrorReporter(_errorReporter)
{
#if defined (HAVE_Z3) || defined (HAVE_CVC4)

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@ -61,7 +61,8 @@ public:
langutil::ErrorReporter& _errorReporter,
std::map<h256, std::string> const& _smtlib2Responses,
ReadCallback::Callback const& _smtCallback,
smtutil::SMTSolverChoice _enabledSolvers
smtutil::SMTSolverChoice _enabledSolvers,
std::optional<unsigned> timeout
);
void analyze(SourceUnit const& _sources, std::map<ASTNode const*, std::set<VerificationTarget::Type>> _solvedTargets);

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@ -49,18 +49,20 @@ CHC::CHC(
ErrorReporter& _errorReporter,
[[maybe_unused]] map<util::h256, string> const& _smtlib2Responses,
[[maybe_unused]] ReadCallback::Callback const& _smtCallback,
SMTSolverChoice _enabledSolvers
SMTSolverChoice _enabledSolvers,
optional<unsigned> _timeout
):
SMTEncoder(_context),
m_outerErrorReporter(_errorReporter),
m_enabledSolvers(_enabledSolvers)
m_enabledSolvers(_enabledSolvers),
m_queryTimeout(_timeout)
{
bool usesZ3 = _enabledSolvers.z3;
#ifndef HAVE_Z3
usesZ3 = false;
#endif
if (!usesZ3)
m_interface = make_unique<CHCSmtLib2Interface>(_smtlib2Responses, _smtCallback);
m_interface = make_unique<CHCSmtLib2Interface>(_smtlib2Responses, _smtCallback, m_queryTimeout);
}
void CHC::analyze(SourceUnit const& _source)
@ -699,7 +701,7 @@ void CHC::resetSourceAnalysis()
if (usesZ3)
{
/// z3::fixedpoint does not have a reset mechanism, so we need to create another.
m_interface.reset(new Z3CHCInterface());
m_interface.reset(new Z3CHCInterface(m_queryTimeout));
auto z3Interface = dynamic_cast<Z3CHCInterface const*>(m_interface.get());
solAssert(z3Interface, "");
m_context.setSolver(z3Interface->z3Interface());

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@ -55,7 +55,8 @@ public:
langutil::ErrorReporter& _errorReporter,
std::map<util::h256, std::string> const& _smtlib2Responses,
ReadCallback::Callback const& _smtCallback,
smtutil::SMTSolverChoice _enabledSolvers
smtutil::SMTSolverChoice _enabledSolvers,
std::optional<unsigned> timeout
);
void analyze(SourceUnit const& _sources);
@ -330,6 +331,9 @@ private:
/// SMT solvers that are chosen at runtime.
smtutil::SMTSolverChoice m_enabledSolvers;
/// SMT query timeout in seconds.
std::optional<unsigned> m_queryTimeout;
};
}

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@ -27,14 +27,14 @@ using namespace solidity::frontend;
ModelChecker::ModelChecker(
ErrorReporter& _errorReporter,
map<h256, string> const& _smtlib2Responses,
ModelCheckerEngine _engine,
ModelCheckerSettings _settings,
ReadCallback::Callback const& _smtCallback,
smtutil::SMTSolverChoice _enabledSolvers
):
m_engine(_engine),
m_settings(_settings),
m_context(),
m_bmc(m_context, _errorReporter, _smtlib2Responses, _smtCallback, _enabledSolvers),
m_chc(m_context, _errorReporter, _smtlib2Responses, _smtCallback, _enabledSolvers)
m_bmc(m_context, _errorReporter, _smtlib2Responses, _smtCallback, _enabledSolvers, _settings.timeout),
m_chc(m_context, _errorReporter, _smtlib2Responses, _smtCallback, _enabledSolvers, _settings.timeout)
{
}
@ -43,14 +43,14 @@ void ModelChecker::analyze(SourceUnit const& _source)
if (!_source.annotation().experimentalFeatures.count(ExperimentalFeature::SMTChecker))
return;
if (m_engine.chc)
if (m_settings.engine.chc)
m_chc.analyze(_source);
auto solvedTargets = m_chc.safeTargets();
for (auto const& target: m_chc.unsafeTargets())
solvedTargets[target.first] += target.second;
if (m_engine.bmc)
if (m_settings.engine.bmc)
m_bmc.analyze(_source, solvedTargets);
}

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@ -71,6 +71,12 @@ struct ModelCheckerEngine
}
};
struct ModelCheckerSettings
{
ModelCheckerEngine engine = ModelCheckerEngine::All();
std::optional<unsigned> timeout;
};
class ModelChecker
{
public:
@ -79,7 +85,7 @@ public:
ModelChecker(
langutil::ErrorReporter& _errorReporter,
std::map<solidity::util::h256, std::string> const& _smtlib2Responses,
ModelCheckerEngine _engine = ModelCheckerEngine::All(),
ModelCheckerSettings _settings = ModelCheckerSettings{},
ReadCallback::Callback const& _smtCallback = ReadCallback::Callback(),
smtutil::SMTSolverChoice _enabledSolvers = smtutil::SMTSolverChoice::All()
);
@ -95,7 +101,7 @@ public:
static smtutil::SMTSolverChoice availableSolvers();
private:
ModelCheckerEngine m_engine;
ModelCheckerSettings m_settings;
/// Stores the context of the encoding.
smt::EncodingContext m_context;

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@ -87,7 +87,6 @@ static int g_compilerStackCounts = 0;
CompilerStack::CompilerStack(ReadCallback::Callback _readFile):
m_readFile{std::move(_readFile)},
m_modelCheckerEngine{ModelCheckerEngine::All()},
m_enabledSMTSolvers{smtutil::SMTSolverChoice::All()},
m_errorReporter{m_errorList}
{
@ -139,11 +138,11 @@ void CompilerStack::setEVMVersion(langutil::EVMVersion _version)
m_evmVersion = _version;
}
void CompilerStack::setModelCheckerEngine(ModelCheckerEngine _engine)
void CompilerStack::setModelCheckerSettings(ModelCheckerSettings _settings)
{
if (m_stackState >= ParsedAndImported)
BOOST_THROW_EXCEPTION(CompilerError() << errinfo_comment("Must set enabled model checking engines before parsing."));
m_modelCheckerEngine = _engine;
BOOST_THROW_EXCEPTION(CompilerError() << errinfo_comment("Must set model checking settings before parsing."));
m_modelCheckerSettings = _settings;
}
void CompilerStack::setSMTSolverChoice(smtutil::SMTSolverChoice _enabledSMTSolvers)
@ -215,7 +214,7 @@ void CompilerStack::reset(bool _keepSettings)
m_remappings.clear();
m_libraries.clear();
m_evmVersion = langutil::EVMVersion();
m_modelCheckerEngine = ModelCheckerEngine::All();
m_modelCheckerSettings = ModelCheckerSettings{};
m_enabledSMTSolvers = smtutil::SMTSolverChoice::All();
m_generateIR = false;
m_generateEwasm = false;
@ -452,7 +451,7 @@ bool CompilerStack::analyze()
if (noErrors)
{
ModelChecker modelChecker(m_errorReporter, m_smtlib2Responses, m_modelCheckerEngine, m_readFile, m_enabledSMTSolvers);
ModelChecker modelChecker(m_errorReporter, m_smtlib2Responses, m_modelCheckerSettings, m_readFile, m_enabledSMTSolvers);
for (Source const* source: m_sourceOrder)
if (source->ast)
modelChecker.analyze(*source->ast);

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@ -167,8 +167,8 @@ public:
/// Must be set before parsing.
void setEVMVersion(langutil::EVMVersion _version = langutil::EVMVersion{});
/// Set which model checking engines should be used.
void setModelCheckerEngine(ModelCheckerEngine _engine);
/// Set model checker settings.
void setModelCheckerSettings(ModelCheckerSettings _settings);
/// Set which SMT solvers should be enabled.
void setSMTSolverChoice(smtutil::SMTSolverChoice _enabledSolvers);
@ -456,7 +456,7 @@ private:
RevertStrings m_revertStrings = RevertStrings::Default;
State m_stopAfter = State::CompilationSuccessful;
langutil::EVMVersion m_evmVersion;
ModelCheckerEngine m_modelCheckerEngine;
ModelCheckerSettings m_modelCheckerSettings;
smtutil::SMTSolverChoice m_enabledSMTSolvers;
std::map<std::string, std::set<std::string>> m_requestedContractNames;
bool m_generateEvmBytecode = true;

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@ -420,7 +420,7 @@ std::optional<Json::Value> checkSettingsKeys(Json::Value const& _input)
std::optional<Json::Value> checkModelCheckerSettingsKeys(Json::Value const& _input)
{
static set<string> keys{"engine"};
static set<string> keys{"engine", "timeout"};
return checkKeys(_input, keys, "modelCheckerSettings");
}
@ -885,7 +885,14 @@ std::variant<StandardCompiler::InputsAndSettings, Json::Value> StandardCompiler:
std::optional<ModelCheckerEngine> engine = ModelCheckerEngine::fromString(modelCheckerSettings["engine"].asString());
if (!engine)
return formatFatalError("JSONError", "Invalid model checker engine requested.");
ret.modelCheckerEngine = *engine;
ret.modelCheckerSettings.engine = *engine;
}
if (modelCheckerSettings.isMember("timeout"))
{
if (!modelCheckerSettings["timeout"].isUInt())
return formatFatalError("JSONError", "modelCheckerSettings.timeout must be an unsigned integer.");
ret.modelCheckerSettings.timeout = modelCheckerSettings["timeout"].asUInt();
}
return { std::move(ret) };
@ -908,7 +915,7 @@ Json::Value StandardCompiler::compileSolidity(StandardCompiler::InputsAndSetting
compilerStack.useMetadataLiteralSources(_inputsAndSettings.metadataLiteralSources);
compilerStack.setMetadataHash(_inputsAndSettings.metadataHash);
compilerStack.setRequestedContractNames(requestedContractNames(_inputsAndSettings.outputSelection));
compilerStack.setModelCheckerEngine(_inputsAndSettings.modelCheckerEngine);
compilerStack.setModelCheckerSettings(_inputsAndSettings.modelCheckerSettings);
compilerStack.enableEvmBytecodeGeneration(isEvmBytecodeRequested(_inputsAndSettings.outputSelection));
compilerStack.enableIRGeneration(isIRRequested(_inputsAndSettings.outputSelection));

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@ -71,7 +71,7 @@ private:
bool metadataLiteralSources = false;
CompilerStack::MetadataHash metadataHash = CompilerStack::MetadataHash::IPFS;
Json::Value outputSelection;
ModelCheckerEngine modelCheckerEngine = ModelCheckerEngine::All();
ModelCheckerSettings modelCheckerSettings = ModelCheckerSettings{};
};
/// Parses the input json (and potentially invokes the read callback) and either returns

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@ -147,6 +147,7 @@ static string const g_strMetadata = "metadata";
static string const g_strMetadataHash = "metadata-hash";
static string const g_strMetadataLiteral = "metadata-literal";
static string const g_strModelCheckerEngine = "model-checker-engine";
static string const g_strModelCheckerTimeout = "model-checker-timeout";
static string const g_strNatspecDev = "devdoc";
static string const g_strNatspecUser = "userdoc";
static string const g_strNone = "none";
@ -217,6 +218,7 @@ static string const g_argMetadata = g_strMetadata;
static string const g_argMetadataHash = g_strMetadataHash;
static string const g_argMetadataLiteral = g_strMetadataLiteral;
static string const g_argModelCheckerEngine = g_strModelCheckerEngine;
static string const g_argModelCheckerTimeout = g_strModelCheckerTimeout;
static string const g_argNatspecDev = g_strNatspecDev;
static string const g_argNatspecUser = g_strNatspecUser;
static string const g_argOpcodes = g_strOpcodes;
@ -1002,6 +1004,13 @@ General Information)").c_str(),
po::value<string>()->value_name("all,bmc,chc,none")->default_value("all"),
"Select model checker engine."
)
(
g_strModelCheckerTimeout.c_str(),
po::value<unsigned>()->value_name("ms"),
"Set model checker timeout per query in milliseconds. "
"The default is a deterministic resource limit. "
"A timeout of 0 means no resource/time restrictions for any query."
)
;
desc.add(smtCheckerOptions);
@ -1400,9 +1409,12 @@ bool CommandLineInterface::processInput()
serr() << "Invalid option for --" << g_argModelCheckerEngine << ": " << engineStr << endl;
return false;
}
m_modelCheckerEngine = *engine;
m_modelCheckerSettings.engine = *engine;
}
if (m_args.count(g_argModelCheckerTimeout))
m_modelCheckerSettings.timeout = m_args[g_argModelCheckerTimeout].as<unsigned>();
m_compiler = make_unique<CompilerStack>(fileReader);
unique_ptr<SourceReferenceFormatter> formatter;
@ -1417,8 +1429,8 @@ bool CommandLineInterface::processInput()
m_compiler->useMetadataLiteralSources(true);
if (m_args.count(g_argMetadataHash))
m_compiler->setMetadataHash(m_metadataHash);
if (m_args.count(g_argModelCheckerEngine))
m_compiler->setModelCheckerEngine(m_modelCheckerEngine);
if (m_args.count(g_argModelCheckerEngine) || m_args.count(g_argModelCheckerTimeout))
m_compiler->setModelCheckerSettings(m_modelCheckerSettings);
if (m_args.count(g_argInputFile))
m_compiler->setRemappings(m_remappings);

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@ -133,8 +133,8 @@ private:
RevertStrings m_revertStrings = RevertStrings::Default;
/// Chosen hash method for the bytecode metadata.
CompilerStack::MetadataHash m_metadataHash = CompilerStack::MetadataHash::IPFS;
/// Chosen model checker engine.
ModelCheckerEngine m_modelCheckerEngine = ModelCheckerEngine::All();
/// Model checker settings.
ModelCheckerSettings m_modelCheckerSettings;
/// Whether or not to colorize diagnostics output.
bool m_coloredOutput = true;
/// Whether or not to output error IDs.

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@ -0,0 +1 @@
--model-checker-timeout 1

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@ -0,0 +1,50 @@
Warning: CHC: Assertion violation might happen here.
--> model_checker_timeout_all/input.sol:6:3:
|
6 | assert(x > 0);
| ^^^^^^^^^^^^^
Warning: CHC: Assertion violation might happen here.
--> model_checker_timeout_all/input.sol:7:3:
|
7 | assert(x > 2);
| ^^^^^^^^^^^^^
Warning: CHC: Assertion violation might happen here.
--> model_checker_timeout_all/input.sol:8:3:
|
8 | assert(x > 4);
| ^^^^^^^^^^^^^
Warning: BMC: Assertion violation happens here.
--> model_checker_timeout_all/input.sol:6:3:
|
6 | assert(x > 0);
| ^^^^^^^^^^^^^
Note: Counterexample:
x = 0
Note: Callstack:
Note:
Warning: BMC: Assertion violation happens here.
--> model_checker_timeout_all/input.sol:7:3:
|
7 | assert(x > 2);
| ^^^^^^^^^^^^^
Note: Counterexample:
x = 1
Note: Callstack:
Note:
Warning: BMC: Assertion violation happens here.
--> model_checker_timeout_all/input.sol:8:3:
|
8 | assert(x > 4);
| ^^^^^^^^^^^^^
Note: Counterexample:
x = 3
Note: Callstack:
Note:

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@ -0,0 +1,10 @@
// SPDX-License-Identifier: GPL-3.0
pragma solidity >=0.0;
pragma experimental SMTChecker;
contract test {
function f(uint x) public pure {
assert(x > 0);
assert(x > 2);
assert(x > 4);
}
}

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@ -0,0 +1 @@
--model-checker-engine bmc --model-checker-timeout 1

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@ -0,0 +1,32 @@
Warning: BMC: Assertion violation happens here.
--> model_checker_timeout_bmc/input.sol:6:3:
|
6 | assert(x > 0);
| ^^^^^^^^^^^^^
Note: Counterexample:
x = 0
Note: Callstack:
Note:
Warning: BMC: Assertion violation happens here.
--> model_checker_timeout_bmc/input.sol:7:3:
|
7 | assert(x > 2);
| ^^^^^^^^^^^^^
Note: Counterexample:
x = 1
Note: Callstack:
Note:
Warning: BMC: Assertion violation happens here.
--> model_checker_timeout_bmc/input.sol:8:3:
|
8 | assert(x > 4);
| ^^^^^^^^^^^^^
Note: Counterexample:
x = 3
Note: Callstack:
Note:

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@ -0,0 +1,10 @@
// SPDX-License-Identifier: GPL-3.0
pragma solidity >=0.0;
pragma experimental SMTChecker;
contract test {
function f(uint x) public pure {
assert(x > 0);
assert(x > 2);
assert(x > 4);
}
}

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@ -0,0 +1 @@
--model-checker-engine chc --model-checker-timeout 1

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Warning: CHC: Assertion violation might happen here.
--> model_checker_timeout_chc/input.sol:6:3:
|
6 | assert(x > 0);
| ^^^^^^^^^^^^^
Warning: CHC: Assertion violation might happen here.
--> model_checker_timeout_chc/input.sol:7:3:
|
7 | assert(x > 2);
| ^^^^^^^^^^^^^
Warning: CHC: Assertion violation might happen here.
--> model_checker_timeout_chc/input.sol:8:3:
|
8 | assert(x > 4);
| ^^^^^^^^^^^^^

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@ -0,0 +1,10 @@
// SPDX-License-Identifier: GPL-3.0
pragma solidity >=0.0;
pragma experimental SMTChecker;
contract test {
function f(uint x) public pure {
assert(x > 0);
assert(x > 2);
assert(x > 4);
}
}

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@ -0,0 +1,14 @@
{
"language": "Solidity",
"sources":
{
"A":
{
"content": "// SPDX-License-Identifier: GPL-3.0\npragma solidity >=0.0;\npragma experimental SMTChecker;\ncontract C { function f(uint x) public pure { assert(x > 0); } }"
}
},
"modelCheckerSettings":
{
"timeout": 1
}
}

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@ -0,0 +1,37 @@
{"auxiliaryInputRequested":{"smtlib2queries":{"0x067a0b3dedbdbea0177dfdac7720e0016881a66f25f487ed054daeecdca08a44":"(set-option :produce-models true)
(set-option :timeout 1)
(set-logic ALL)
(declare-fun |error_0| () Int)
(declare-fun |this_0| () Int)
(declare-datatypes ((|state_type| 0)) (((|state_type| (|balances| (Array Int Int))))))
(declare-fun |state_0| () |state_type|)
(declare-datatypes ((|bytes_tuple| 0)) (((|bytes_tuple| (|bytes_tuple_accessor_array| (Array Int Int)) (|bytes_tuple_accessor_length| Int)))))
(declare-datatypes ((|tx_type| 0)) (((|tx_type| (|block.coinbase| Int) (|block.difficulty| Int) (|block.gaslimit| Int) (|block.number| Int) (|block.timestamp| Int) (|blockhash| (Array Int Int)) (|msg.data| |bytes_tuple|) (|msg.sender| Int) (|msg.sig| Int) (|msg.value| Int) (|tx.gasprice| Int) (|tx.origin| Int)))))
(declare-fun |tx_0| () |tx_type|)
(declare-datatypes ((|ecrecover_input_type| 0)) (((|ecrecover_input_type| (|hash| Int) (|v| Int) (|r| Int) (|s| Int)))))
(declare-datatypes ((|crypto_type| 0)) (((|crypto_type| (|ecrecover| (Array |ecrecover_input_type| Int)) (|keccak256| (Array |bytes_tuple| Int)) (|ripemd160| (Array |bytes_tuple| Int)) (|sha256| (Array |bytes_tuple| Int))))))
(declare-fun |crypto_0| () |crypto_type|)
(declare-fun |x_4_0| () Int)
(declare-fun |expr_8_0| () Int)
(declare-fun |expr_9_0| () Int)
(declare-fun |expr_10_1| () Bool)
(assert (and (and true (and (= expr_10_1 (> expr_8_0 expr_9_0)) (and (= expr_9_0 0) (and (= expr_8_0 x_4_0) (and (and (>= x_4_0 0) (<= x_4_0 115792089237316195423570985008687907853269984665640564039457584007913129639935)) true))))) (not expr_10_1)))
(declare-const |EVALEXPR_0| Int)
(assert (= |EVALEXPR_0| x_4_0))
(check-sat)
(get-value (|EVALEXPR_0| ))
"}},"errors":[{"component":"general","errorCode":"6328","formattedMessage":"A:4:47: Warning: CHC: Assertion violation might happen here.
contract C { function f(uint x) public pure { assert(x > 0); } }
^-----------^
","message":"CHC: Assertion violation might happen here.","severity":"warning","sourceLocation":{"end":150,"file":"A","start":137},"type":"Warning"},{"component":"general","errorCode":"4661","formattedMessage":"A:4:47: Warning: BMC: Assertion violation happens here.
contract C { function f(uint x) public pure { assert(x > 0); } }
^-----------^
Counterexample:
x = 0
Callstack:
","message":"BMC: Assertion violation happens here.","secondarySourceLocations":[{"message":"Counterexample:
x = 0
"},{"message":"Callstack:"},{"message":""}],"severity":"warning","sourceLocation":{"end":150,"file":"A","start":137},"type":"Warning"}],"sources":{"A":{"id":0}}}

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@ -0,0 +1,15 @@
{
"language": "Solidity",
"sources":
{
"A":
{
"content": "// SPDX-License-Identifier: GPL-3.0\npragma solidity >=0.0;\npragma experimental SMTChecker;\ncontract C { function f(uint x) public pure { assert(x > 0); } }"
}
},
"modelCheckerSettings":
{
"engine": "bmc",
"timeout": 1
}
}

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@ -0,0 +1,34 @@
{"auxiliaryInputRequested":{"smtlib2queries":{"0x067a0b3dedbdbea0177dfdac7720e0016881a66f25f487ed054daeecdca08a44":"(set-option :produce-models true)
(set-option :timeout 1)
(set-logic ALL)
(declare-fun |error_0| () Int)
(declare-fun |this_0| () Int)
(declare-datatypes ((|state_type| 0)) (((|state_type| (|balances| (Array Int Int))))))
(declare-fun |state_0| () |state_type|)
(declare-datatypes ((|bytes_tuple| 0)) (((|bytes_tuple| (|bytes_tuple_accessor_array| (Array Int Int)) (|bytes_tuple_accessor_length| Int)))))
(declare-datatypes ((|tx_type| 0)) (((|tx_type| (|block.coinbase| Int) (|block.difficulty| Int) (|block.gaslimit| Int) (|block.number| Int) (|block.timestamp| Int) (|blockhash| (Array Int Int)) (|msg.data| |bytes_tuple|) (|msg.sender| Int) (|msg.sig| Int) (|msg.value| Int) (|tx.gasprice| Int) (|tx.origin| Int)))))
(declare-fun |tx_0| () |tx_type|)
(declare-datatypes ((|ecrecover_input_type| 0)) (((|ecrecover_input_type| (|hash| Int) (|v| Int) (|r| Int) (|s| Int)))))
(declare-datatypes ((|crypto_type| 0)) (((|crypto_type| (|ecrecover| (Array |ecrecover_input_type| Int)) (|keccak256| (Array |bytes_tuple| Int)) (|ripemd160| (Array |bytes_tuple| Int)) (|sha256| (Array |bytes_tuple| Int))))))
(declare-fun |crypto_0| () |crypto_type|)
(declare-fun |x_4_0| () Int)
(declare-fun |expr_8_0| () Int)
(declare-fun |expr_9_0| () Int)
(declare-fun |expr_10_1| () Bool)
(assert (and (and true (and (= expr_10_1 (> expr_8_0 expr_9_0)) (and (= expr_9_0 0) (and (= expr_8_0 x_4_0) (and (and (>= x_4_0 0) (<= x_4_0 115792089237316195423570985008687907853269984665640564039457584007913129639935)) true))))) (not expr_10_1)))
(declare-const |EVALEXPR_0| Int)
(assert (= |EVALEXPR_0| x_4_0))
(check-sat)
(get-value (|EVALEXPR_0| ))
"}},"errors":[{"component":"general","errorCode":"4661","formattedMessage":"A:4:47: Warning: BMC: Assertion violation happens here.
contract C { function f(uint x) public pure { assert(x > 0); } }
^-----------^
Counterexample:
x = 0
Callstack:
","message":"BMC: Assertion violation happens here.","secondarySourceLocations":[{"message":"Counterexample:
x = 0
"},{"message":"Callstack:"},{"message":""}],"severity":"warning","sourceLocation":{"end":150,"file":"A","start":137},"type":"Warning"}],"sources":{"A":{"id":0}}}

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@ -0,0 +1,15 @@
{
"language": "Solidity",
"sources":
{
"A":
{
"content": "// SPDX-License-Identifier: GPL-3.0\npragma solidity >=0.0;\npragma experimental SMTChecker;\ncontract C { function f(uint x) public pure { assert(x > 0); } }"
}
},
"modelCheckerSettings":
{
"engine": "chc",
"timeout": 1
}
}

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@ -0,0 +1,4 @@
{"errors":[{"component":"general","errorCode":"6328","formattedMessage":"A:4:47: Warning: CHC: Assertion violation might happen here.
contract C { function f(uint x) public pure { assert(x > 0); } }
^-----------^
","message":"CHC: Assertion violation might happen here.","severity":"warning","sourceLocation":{"end":150,"file":"A","start":137},"type":"Warning"}],"sources":{"A":{"id":0}}}

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@ -0,0 +1,15 @@
{
"language": "Solidity",
"sources":
{
"A":
{
"content": "// SPDX-License-Identifier: GPL-3.0\npragma solidity >=0.0;\npragma experimental SMTChecker;\ncontract C { function f(uint x) public pure { assert(x > 0); } }"
}
},
"modelCheckerSettings":
{
"engine": "chc",
"atimeout": 1
}
}

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@ -0,0 +1 @@
{"errors":[{"component":"general","formattedMessage":"Unknown key \"atimeout\"","message":"Unknown key \"atimeout\"","severity":"error","type":"JSONError"}]}

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@ -0,0 +1,14 @@
{
"language": "Solidity",
"sources":
{
"A":
{
"content": "// SPDX-License-Identifier: GPL-3.0\npragma solidity >=0.0;\npragma experimental SMTChecker;\ncontract C { function f(uint x) public pure { assert(x > 0); } }"
}
},
"modelCheckerSettings":
{
"timeout": "asd"
}
}

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@ -0,0 +1 @@
{"errors":[{"component":"general","formattedMessage":"modelCheckerSettings.timeout must be an unsigned integer.","message":"modelCheckerSettings.timeout must be an unsigned integer.","severity":"error","type":"JSONError"}]}