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JaniParser: Transform reward bounds into time- or step bound if appropriate. Added some checks and warnings.

tempestpy_adaptions
TimQu 6 years ago
parent
f2fe674656
commit
0d8ecaff35
3 changed files with 58 additions and 53 deletions
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  1. 104
      src/storm-parsers/parser/JaniParser.cpp
  2. 4
      src/storm/logic/RewardAccumulation.cpp
  3. 3
      src/storm/logic/RewardAccumulation.h

104
src/storm-parsers/parser/JaniParser.cpp
View File

@ -89,6 +89,7 @@ namespace storm {
//jani-version
STORM_LOG_THROW(parsedStructure.count("jani-version") == 1, storm::exceptions::InvalidJaniException, "Jani-version must be given exactly once.");
uint64_t version = getUnsignedInt(parsedStructure.at("jani-version"), "jani version");
STORM_LOG_WARN_COND(version >= 1 && version <=1, "JANI Version " << version << " is not supported. Results may be wrong.");
//name
STORM_LOG_THROW(parsedStructure.count("name") == 1, storm::exceptions::InvalidJaniException, "A model must have a (single) name");
std::string name = getString(parsedStructure.at("name"), "model name");
@ -224,7 +225,6 @@ namespace storm {
return { parseFormula(model, propertyStructure.at("exp"), formulaContext, scope.refine("Operand of operator " + opstring)) };
}
std::vector<std::shared_ptr<storm::logic::Formula const>> JaniParser::parseBinaryFormulaArguments(storm::jani::Model& model, json const& propertyStructure, storm::logic::FormulaContext formulaContext, std::string const& opstring, Scope const& scope) {
STORM_LOG_THROW(propertyStructure.count("left") == 1, storm::exceptions::InvalidJaniException, "Expecting left operand for operator " << opstring << " in " << scope.description);
STORM_LOG_THROW(propertyStructure.count("right") == 1, storm::exceptions::InvalidJaniException, "Expecting right operand for operator " << opstring << " in " << scope.description);
@ -272,6 +272,19 @@ namespace storm {
return storm::logic::RewardAccumulation(accSteps, accTime, accExit);
}
void insertLowerUpperTimeBounds(std::vector<boost::optional<storm::logic::TimeBound>>& lowerBounds, std::vector<boost::optional<storm::logic::TimeBound>>& upperBounds, storm::jani::PropertyInterval const& pi) {
if (pi.hasLowerBound()) {
lowerBounds.push_back(storm::logic::TimeBound(pi.lowerBoundStrict, pi.lowerBound));
} else {
lowerBounds.push_back(boost::none);
}
if (pi.hasUpperBound()) {
upperBounds.push_back(storm::logic::TimeBound(pi.upperBoundStrict, pi.upperBound));
} else {
upperBounds.push_back(boost::none);
}
}
std::shared_ptr<storm::logic::Formula const> JaniParser::parseFormula(storm::jani::Model& model, json const& propertyStructure, storm::logic::FormulaContext formulaContext, Scope const& scope, boost::optional<storm::logic::Bound> bound) {
if (propertyStructure.is_boolean()) {
return std::make_shared<storm::logic::BooleanLiteralFormula>(propertyStructure.get<bool>());
@ -311,6 +324,7 @@ namespace storm {
assert(bound == boost::none);
STORM_LOG_THROW(false, storm::exceptions::NotImplementedException, "Forall and Exists are currently not supported");
} else if (opString == "Emin" || opString == "Emax") {
STORM_LOG_WARN_COND(model.getJaniVersion() == 1, "Model not compliant: Contains Emin/Emax property in " << scope.description << ".");
STORM_LOG_THROW(propertyStructure.count("exp") == 1, storm::exceptions::InvalidJaniException, "Expecting reward-expression for operator " << opString << " in " << scope.description);
storm::expressions::Expression rewExpr = parseExpression(propertyStructure.at("exp"), scope.refine("Reward expression"));
STORM_LOG_THROW(rewExpr.hasNumericalType(), storm::exceptions::InvalidJaniException, "Reward expression '" << rewExpr << "' does not have numerical type in " << scope.description);
@ -356,12 +370,18 @@ namespace storm {
for (auto const& rewInst : propertyStructure.at("reward-instants")) {
storm::expressions::Expression rewInstRewardModelExpression = parseExpression(rewInst.at("exp"), scope.refine("Reward expression at reward instant"));
STORM_LOG_THROW(rewInstRewardModelExpression.hasNumericalType(), storm::exceptions::InvalidJaniException, "Reward expression '" << rewInstRewardModelExpression << "' does not have numerical type in " << scope.description);
std::string rewInstRewardModelName = rewInstRewardModelExpression.toString();
if (!rewInstRewardModelExpression.isVariable()) {
model.addNonTrivialRewardExpression(rewInstRewardModelName, rewInstRewardModelExpression);
}
storm::logic::RewardAccumulation boundRewardAccumulation = parseRewardAccumulation(rewInst.at("accumulate"), scope.description);
boundReferences.emplace_back(rewInstRewardModelName, boundRewardAccumulation);
bool steps = (boundRewardAccumulation.isStepsSet() || boundRewardAccumulation.isExitSet()) && boundRewardAccumulation.size() == 1;
bool time = boundRewardAccumulation.isTimeSet() && boundRewardAccumulation.size() == 1 && !model.isDiscreteTimeModel();
if ((steps || time) && !rewInstRewardModelExpression.containsVariables() && storm::utility::isOne(rewInstRewardModelExpression.evaluateAsRational())) {
boundReferences.emplace_back(steps ? storm::logic::TimeBoundType::Steps : storm::logic::TimeBoundType::Time);
} else {
std::string rewInstRewardModelName = rewInstRewardModelExpression.toString();
if (!rewInstRewardModelExpression.isVariable()) {
model.addNonTrivialRewardExpression(rewInstRewardModelName, rewInstRewardModelExpression);
}
boundReferences.emplace_back(rewInstRewardModelName, boundRewardAccumulation);
}
storm::expressions::Expression rewInstantExpr = parseExpression(rewInst.at("instant"), scope.refine("reward instant"));
bounds.emplace_back(false, rewInstantExpr);
}
@ -395,21 +415,20 @@ namespace storm {
// Reward accumulation is optional as it was not available in the early days...
boost::optional<storm::logic::RewardAccumulation> rewardAccumulation;
if (propertyStructure.count("accumulate") > 0) {
rewardAccumulation = parseRewardAccumulation(propertyStructure.at("accumulate"), scope.description);
STORM_LOG_WARN_COND(model.getJaniVersion() == 1, "Unexpected accumulate field in " << scope.description << ".");
rewardAccumulation = parseRewardAccumulation(propertyStructure.at("accumulate"), scope.description);
}
//STORM_LOG_THROW(, storm::exceptions::InvalidJaniException, "Expected an accumulate array at steady state property at " << scope.description);
STORM_LOG_THROW(propertyStructure.count("exp") > 0, storm::exceptions::InvalidJaniException, "Expected an expression at steady state property at " << scope.description);
auto rewExpr = parseExpression(propertyStructure["exp"], scope.refine("steady-state operator"), true);
if (!rewExpr.isInitialized()) {
auto exp = parseExpression(propertyStructure["exp"], scope.refine("steady-state operator"), true);
if (!exp.isInitialized() || exp.hasBooleanType()) {
STORM_LOG_THROW(!rewardAccumulation.is_initialized(), storm::exceptions::InvalidJaniException, "Long-run average probabilities are not allowed to have a reward accumulation at" << scope.description);
STORM_LOG_THROW(propertyStructure.count("exp") > 0, storm::exceptions::InvalidJaniException, "Expected an expression at steady state property at " << scope.description);
std::shared_ptr<storm::logic::Formula const> subformula = parseUnaryFormulaArgument(model, propertyStructure, formulaContext, opString, scope.refine("Steady-state operator"))[0];
return std::make_shared<storm::logic::LongRunAverageOperatorFormula>(subformula, opInfo);
}
STORM_LOG_THROW(rewExpr.hasNumericalType(), storm::exceptions::InvalidJaniException, "Reward expression '" << rewExpr << "' does not have numerical type in " << scope.description);
std::string rewardName = rewExpr.toString();
if (!rewExpr.isVariable()) {
model.addNonTrivialRewardExpression(rewardName, rewExpr);
STORM_LOG_THROW(exp.hasNumericalType(), storm::exceptions::InvalidJaniException, "Reward expression '" << exp << "' does not have numerical type in " << scope.description);
std::string rewardName = exp.toString();
if (!exp.isVariable()) {
model.addNonTrivialRewardExpression(rewardName, exp);
}
auto subformula = std::make_shared<storm::logic::LongRunAverageRewardFormula>(rewardAccumulation);
return std::make_shared<storm::logic::RewardOperatorFormula>(subformula, rewardName, opInfo);
@ -429,56 +448,35 @@ namespace storm {
std::vector<boost::optional<storm::logic::TimeBound>> lowerBounds, upperBounds;
std::vector<storm::logic::TimeBoundReference> tbReferences;
if (propertyStructure.count("step-bounds") > 0) {
STORM_LOG_WARN_COND(model.getJaniVersion() == 1, "Jani model not compliant: Contains step-bounds in " << scope.description << ".");
storm::jani::PropertyInterval pi = parsePropertyInterval(propertyStructure.at("step-bounds"), scope.refine("step-bounded until").clearVariables());
boost::optional<storm::logic::TimeBound> lowerBound, upperBound;
if (pi.hasLowerBound()) {
lowerBounds.push_back(storm::logic::TimeBound(pi.lowerBoundStrict, pi.lowerBound));
} else {
lowerBounds.push_back(boost::none);
}
if (pi.hasUpperBound()) {
upperBounds.push_back(storm::logic::TimeBound(pi.upperBoundStrict, pi.upperBound));
} else {
upperBounds.push_back(boost::none);
}
insertLowerUpperTimeBounds(lowerBounds, upperBounds, pi);
tbReferences.emplace_back(storm::logic::TimeBoundType::Steps);
}
if (propertyStructure.count("time-bounds") > 0) {
STORM_LOG_WARN_COND(model.getJaniVersion() == 1, "Jani model not compliant: Contains time-bounds in " << scope.description << ".");
storm::jani::PropertyInterval pi = parsePropertyInterval(propertyStructure.at("time-bounds"), scope.refine("time-bounded until").clearVariables());
boost::optional<storm::logic::TimeBound> lowerBound, upperBound;
if (pi.hasLowerBound()) {
lowerBounds.push_back(storm::logic::TimeBound(pi.lowerBoundStrict, pi.lowerBound));
} else {
lowerBounds.push_back(boost::none);
}
if (pi.hasUpperBound()) {
upperBounds.push_back(storm::logic::TimeBound(pi.upperBoundStrict, pi.upperBound));
} else {
upperBounds.push_back(boost::none);
}
insertLowerUpperTimeBounds(lowerBounds, upperBounds, pi);
tbReferences.emplace_back(storm::logic::TimeBoundType::Time);
}
if (propertyStructure.count("reward-bounds") > 0 ) {
for (auto const& rbStructure : propertyStructure.at("reward-bounds")) {
storm::jani::PropertyInterval pi = parsePropertyInterval(rbStructure.at("bounds"), scope.refine("reward-bounded until").clearVariables());
insertLowerUpperTimeBounds(lowerBounds, upperBounds, pi);
STORM_LOG_THROW(rbStructure.count("exp") == 1, storm::exceptions::InvalidJaniException, "Expecting reward-expression for operator " << opString << " in " << scope.description);
storm::expressions::Expression rewInstRewardModelExpression = parseExpression(rbStructure.at("exp"), scope.refine("Reward expression at reward-bounds"));
STORM_LOG_THROW(rewInstRewardModelExpression.hasNumericalType(), storm::exceptions::InvalidJaniException, "Reward expression '" << rewInstRewardModelExpression << "' does not have numerical type in " << scope.description);
std::string rewInstRewardModelName = rewInstRewardModelExpression.toString();
if (!rewInstRewardModelExpression.isVariable()) {
model.addNonTrivialRewardExpression(rewInstRewardModelName, rewInstRewardModelExpression);
}
storm::logic::RewardAccumulation boundRewardAccumulation = parseRewardAccumulation(rbStructure.at("accumulate"), scope.description);
tbReferences.emplace_back(rewInstRewardModelName, boundRewardAccumulation);
if (pi.hasLowerBound()) {
lowerBounds.push_back(storm::logic::TimeBound(pi.lowerBoundStrict, pi.lowerBound));
bool steps = (boundRewardAccumulation.isStepsSet() || boundRewardAccumulation.isExitSet()) && boundRewardAccumulation.size() == 1;
bool time = boundRewardAccumulation.isTimeSet() && boundRewardAccumulation.size() == 1 && !model.isDiscreteTimeModel();
if ((steps || time) && !rewInstRewardModelExpression.containsVariables() && storm::utility::isOne(rewInstRewardModelExpression.evaluateAsRational())) {
tbReferences.emplace_back(steps ? storm::logic::TimeBoundType::Steps : storm::logic::TimeBoundType::Time);
} else {
lowerBounds.push_back(boost::none);
}
if (pi.hasUpperBound()) {
upperBounds.push_back(storm::logic::TimeBound(pi.upperBoundStrict, pi.upperBound));
} else {
upperBounds.push_back(boost::none);
std::string rewInstRewardModelName = rewInstRewardModelExpression.toString();
if (!rewInstRewardModelExpression.isVariable()) {
model.addNonTrivialRewardExpression(rewInstRewardModelName, rewInstRewardModelExpression);
}
tbReferences.emplace_back(rewInstRewardModelName, boundRewardAccumulation);
}
}
}
@ -493,11 +491,11 @@ namespace storm {
assert(bound == boost::none);
std::vector<std::shared_ptr<storm::logic::Formula const>> args = parseUnaryFormulaArgument(model, propertyStructure, formulaContext, opString, scope.refine("Subformula of globally operator "));
if (propertyStructure.count("step-bounds") > 0) {
STORM_LOG_THROW(false, storm::exceptions::NotSupportedException, "Globally and step-bounds are not supported currently");
STORM_LOG_THROW(false, storm::exceptions::NotSupportedException, "Globally and step-bounds are not supported.");
} else if (propertyStructure.count("time-bounds") > 0) {
STORM_LOG_THROW(false, storm::exceptions::NotSupportedException, "Globally and time bounds are not supported by storm");
STORM_LOG_THROW(false, storm::exceptions::NotSupportedException, "Globally and time bounds are not supported.");
} else if (propertyStructure.count("reward-bounds") > 0 ) {
STORM_LOG_THROW(false, storm::exceptions::NotSupportedException, "Reward bounded properties are not supported by storm");
STORM_LOG_THROW(false, storm::exceptions::NotSupportedException, "Globally and reward bounded properties are not supported.");
}
return std::make_shared<storm::logic::GloballyFormula const>(args[1]);

4
src/storm/logic/RewardAccumulation.cpp
View File

@ -23,6 +23,10 @@ namespace storm {
return !isStepsSet() && !isTimeSet() && !isExitSet();
}
uint64_t RewardAccumulation::size() const {
return (isStepsSet() ? 1 : 0) + (isTimeSet() ? 1 : 0) + (isExitSet() ? 1 : 0);
}
std::ostream& operator<<(std::ostream& out, RewardAccumulation const& acc) {
bool hasEntry = false;
if (acc.isStepsSet()) {

3
src/storm/logic/RewardAccumulation.h
View File

@ -16,6 +16,9 @@ namespace storm {
// Returns true iff accumulation for all types of reward is disabled.
bool isEmpty() const;
// Returns the number of types of rewards that are enabled.
uint64_t size() const;
private:
bool time, steps, exit;
};

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