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fixed and extended parsing of jani formulas with Emin or Emax operator

tempestpy_adaptions
TimQu 6 years ago
parent
fe71dfdf9b
commit
5937131ff2
1 changed files with 65 additions and 37 deletions
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  1. 66
      src/storm-parsers/parser/JaniParser.cpp

66
src/storm-parsers/parser/JaniParser.cpp
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@ -228,13 +228,7 @@ namespace storm {
} else {
time = true;
}
std::shared_ptr<storm::logic::Formula const> reach;
if (propertyStructure.count("reach") > 0) {
auto context = time ? storm::logic::FormulaContext::Time : storm::logic::FormulaContext::Reward;
reach = std::make_shared<storm::logic::EventuallyFormula>(parseFormula(propertyStructure.at("reach"), context, globalVars, constants, "Reach-expression of operator " + opString), context);
} else {
STORM_LOG_THROW(false, storm::exceptions::NotSupportedException, "Total reward is currently not supported");
}
storm::logic::OperatorInformation opInfo;
opInfo.optimalityType = opString == "Emin" ? storm::solver::OptimizationDirection::Minimize : storm::solver::OptimizationDirection::Maximize;
opInfo.bound = bound;
@ -257,6 +251,9 @@ namespace storm {
if (propertyStructure.count("step-instant") > 0) {
STORM_LOG_THROW(propertyStructure.count("time-instant") == 0, storm::exceptions::NotSupportedException, "Storm does not support to have a step-instant and a time-instant in " + context);
STORM_LOG_THROW(propertyStructure.count("reward-instants") == 0, storm::exceptions::NotSupportedException, "Storm does not support to have a step-instant and a reward-instant in " + context);
storm::expressions::Expression stepInstantExpr = parseExpression(propertyStructure.at("step-instant"), "Step instant in " + context, globalVars, constants);
STORM_LOG_THROW(!stepInstantExpr.containsVariables(), storm::exceptions::NotSupportedException, "Storm only allows constant step-instants");
@ -278,6 +275,8 @@ namespace storm {
}
}
} else if (propertyStructure.count("time-instant") > 0) {
STORM_LOG_THROW(propertyStructure.count("reward-instants") == 0, storm::exceptions::NotSupportedException, "Storm does not support to have a time-instant and a reward-instant in " + context);
storm::expressions::Expression timeInstantExpr = parseExpression(propertyStructure.at("time-instant"), "time instant in " + context, globalVars, constants);
STORM_LOG_THROW(!timeInstantExpr.containsVariables(), storm::exceptions::NotSupportedException, "Storm only allows constant time-instants");
@ -299,29 +298,60 @@ namespace storm {
}
}
} else if (propertyStructure.count("reward-instants") > 0) {
STORM_LOG_THROW(false, storm::exceptions::NotSupportedException, "Instant Reward for reward constraints not supported currently.");
std::vector<storm::logic::TimeBound> bounds;
std::vector<storm::logic::TimeBoundReference> boundReferences;
for (auto const& rewInst : propertyStructure.at("reward-instants")) {
storm::expressions::Expression rewInstExpression = parseExpression(rewInst.at("exp"), "Reward expression in " + context, globalVars, constants);
STORM_LOG_THROW(!rewInstExpression.isVariable(), storm::exceptions::NotSupportedException, "Reward bounded cumulative reward formulas should only argue over reward expressions.");
boundReferences.emplace_back(rewInstExpression.getVariables().begin()->getName());
bool rewInstAccSteps(false), rewInstAccTime(false);
for (auto const& accEntry : rewInst.at("accumulate")) {
if (accEntry == "steps") {
rewInstAccSteps = true;
} else if (accEntry == "time") {
rewInstAccTime = true;
} else {
STORM_LOG_THROW(false, storm::exceptions::InvalidJaniException, "One may only accumulate either 'steps' or 'time', got " << accEntry.dump() << " in " << context);
}
}
STORM_LOG_THROW((rewInstAccTime && !rewInstAccSteps) || (!rewInstAccTime && rewInstAccSteps), storm::exceptions::NotSupportedException, "Storm only allows to accumulate either over time or over steps in " + context);
storm::expressions::Expression rewInstantExpr = parseExpression(rewInst.at("instant"), "reward instant in " + context, globalVars, constants);
STORM_LOG_THROW(!rewInstantExpr.containsVariables(), storm::exceptions::NotSupportedException, "Storm only allows constant time-instants");
double rewInstant = rewInstantExpr.evaluateAsDouble();
STORM_LOG_THROW(rewInstant >= 0, storm::exceptions::InvalidJaniException, "Only non-negative reward-instants are allowed");
bounds.emplace_back(false, rewInstantExpr);
}
if (rewExpr.isVariable()) {
std::string rewardName = rewExpr.getVariables().begin()->getName();
return std::make_shared<storm::logic::RewardOperatorFormula>(std::make_shared<storm::logic::CumulativeRewardFormula>(bounds, boundReferences), rewardName, opInfo);
} else {
STORM_LOG_THROW(false, storm::exceptions::NotSupportedException, "Only simple reward expressions are currently supported");
}
} else {
std::shared_ptr<storm::logic::Formula const> subformula;
if (propertyStructure.count("reach") > 0) {
auto context = time ? storm::logic::FormulaContext::Time : storm::logic::FormulaContext::Reward;
subformula = std::make_shared<storm::logic::EventuallyFormula>(parseFormula(propertyStructure.at("reach"), context, globalVars, constants, "Reach-expression of operator " + opString), context);
} else {
subformula = std::make_shared<storm::logic::TotalRewardFormula>();
}
//STORM_LOG_THROW(!accTime && !accSteps, storm::exceptions::NotSupportedException, "Storm only allows accumulation if a step- or time-bound is given.");
if (rewExpr.isVariable()) {
assert(!time);
std::string rewardName = rewExpr.getVariables().begin()->getName();
return std::make_shared<storm::logic::RewardOperatorFormula>(reach, rewardName, opInfo);
return std::make_shared<storm::logic::RewardOperatorFormula>(subformula, rewardName, opInfo);
} else if (!rewExpr.containsVariables()) {
assert(time);
assert(reach->isTimePathFormula());
assert(subformula->isTotalRewardFormula() || subformula->isTimePathFormula());
if(rewExpr.hasIntegerType()) {
if (rewExpr.evaluateAsInt() == 1) {
return std::make_shared<storm::logic::TimeOperatorFormula>(reach, opInfo);
return std::make_shared<storm::logic::TimeOperatorFormula>(subformula, opInfo);
} else {
STORM_LOG_THROW(false, storm::exceptions::NotSupportedException, "Expected steps/time only works with constant one.");
}
} else if (rewExpr.hasRationalType()){
if (rewExpr.evaluateAsDouble() == 1.0) {
return std::make_shared<storm::logic::TimeOperatorFormula>(reach, opInfo);
return std::make_shared<storm::logic::TimeOperatorFormula>(subformula, opInfo);
} else {
STORM_LOG_THROW(false, storm::exceptions::NotSupportedException, "Expected steps/time only works with constant one.");
}
@ -332,8 +362,7 @@ namespace storm {
} else {
STORM_LOG_THROW(false, storm::exceptions::NotSupportedException, "No complex reward expressions are supported at the moment");
}
}
} else if (opString == "Smin" || opString == "Smax") {
STORM_LOG_THROW(false, storm::exceptions::NotImplementedException, "Smin and Smax are currently not supported");
} else if (opString == "U" || opString == "F") {
@ -382,7 +411,6 @@ namespace storm {
std::vector<storm::logic::TimeBoundReference> tbReferences;
for (auto const& rbStructure : propertyStructure.at("reward-bounds")) {
storm::jani::PropertyInterval pi = parsePropertyInterval(rbStructure.at("bounds"));
STORM_LOG_THROW(pi.hasUpperBound(), storm::exceptions::NotSupportedException, "Storm only supports time-bounded until with an upper bound.");
STORM_LOG_THROW(rbStructure.count("exp") == 1, storm::exceptions::InvalidJaniException, "Expecting reward-expression for operator " << opString << " in " << context);
storm::expressions::Expression rewExpr = parseExpression(rbStructure.at("exp"), "Reward expression in " + context, globalVars, constants);
STORM_LOG_THROW(rewExpr.isVariable(), storm::exceptions::NotSupportedException, "Storm currently does not support complex reward expressions.");

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