sp
/
tempest
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity
Browse Source

Some refactoring work. 

Former-commit-id: 1e67f5cac8
tempestpy_adaptions
dehnert 11 years ago
parent
ae6838d786
commit
8244420248
2 changed files with 124 additions and 106 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Unified View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 196
      src/counterexamples/SMTMinimalCommandSetGenerator.h
  2. 26
      src/storm.cpp

196
src/counterexamples/SMTMinimalCommandSetGenerator.h
View File

@ -9,6 +9,7 @@
#define STORM_COUNTEREXAMPLES_SMTMINIMALCOMMANDSETGENERATOR_MDP_H_ #define STORM_COUNTEREXAMPLES_SMTMINIMALCOMMANDSETGENERATOR_MDP_H_
#include <queue> #include <queue>
#include <chrono>
// To detect whether the usage of Z3 is possible, this include is neccessary. // To detect whether the usage of Z3 is possible, this include is neccessary.
#include "storm-config.h" #include "storm-config.h"
@ -38,18 +39,34 @@ namespace storm {
#ifdef STORM_HAVE_Z3 #ifdef STORM_HAVE_Z3
private: private:
struct RelevancyInformation { struct RelevancyInformation {
// The set of relevant states in the model.
storm::storage::BitVector relevantStates; storm::storage::BitVector relevantStates;
// The set of relevant labels.
std::set<uint_fast64_t> relevantLabels; std::set<uint_fast64_t> relevantLabels;
// A set of labels that is definitely known to be taken in the final solution.
std::set<uint_fast64_t> knownLabels; std::set<uint_fast64_t> knownLabels;
// A list of relevant choices for each relevant state.
std::unordered_map<uint_fast64_t, std::list<uint_fast64_t>> relevantChoicesForRelevantStates; std::unordered_map<uint_fast64_t, std::list<uint_fast64_t>> relevantChoicesForRelevantStates;
}; };
struct VariableInformation { struct VariableInformation {
// The variables associated with the relevant labels.
std::vector<z3::expr> labelVariables; std::vector<z3::expr> labelVariables;
// A mapping from relevant labels to their indices in the variable vector.
std::map<uint_fast64_t, uint_fast64_t> labelToIndexMap;
// A set of original auxiliary variables needed for the Fu-Malik procedure.
std::vector<z3::expr> originalAuxiliaryVariables; std::vector<z3::expr> originalAuxiliaryVariables;
// A set of auxiliary variables that may be modified by the MaxSAT procedure.
std::vector<z3::expr> auxiliaryVariables; std::vector<z3::expr> auxiliaryVariables;
// A vector of variables that can be used to constrain the number of variables that are set to true.
std::vector<z3::expr> adderVariables; std::vector<z3::expr> adderVariables;
std::map<uint_fast64_t, uint_fast64_t> labelToIndexMap;
}; };
/*! /*!
@ -150,7 +167,7 @@ namespace storm {
} }
/*! /*!
* Asserts the constraints that are initially known.
* Asserts the constraints that are initially needed for the Fu-Malik procedure.
* *
* @param program The program for which to build the constraints. * @param program The program for which to build the constraints.
* @param labeledMdp The MDP that results from the given program. * @param labeledMdp The MDP that results from the given program.
@ -158,17 +175,13 @@ namespace storm {
* @param solver The solver in which to assert the constraints. * @param solver The solver in which to assert the constraints.
* @param variableInformation A structure with information about the variables for the labels. * @param variableInformation A structure with information about the variables for the labels.
*/ */
static void assertInitialConstraints(storm::ir::Program const& program, storm::models::Mdp<T> const& labeledMdp, storm::storage::BitVector const& psiStates, z3::context& context, z3::solver& solver, VariableInformation const& variableInformation, RelevancyInformation const& relevancyInformation) {
static void assertFuMalikInitialConstraints(storm::ir::Program const& program, storm::models::Mdp<T> const& labeledMdp, storm::storage::BitVector const& psiStates, z3::context& context, z3::solver& solver, VariableInformation const& variableInformation, RelevancyInformation const& relevancyInformation) {
// Assert that at least one of the labels must be taken. // Assert that at least one of the labels must be taken.
z3::expr formula = variableInformation.labelVariables.at(0); z3::expr formula = variableInformation.labelVariables.at(0);
for (uint_fast64_t index = 1; index < variableInformation.labelVariables.size(); ++index) { for (uint_fast64_t index = 1; index < variableInformation.labelVariables.size(); ++index) {
formula = formula || variableInformation.labelVariables.at(index); formula = formula || variableInformation.labelVariables.at(index);
} }
solver.add(formula); solver.add(formula);
for (uint_fast64_t index = 0; index < variableInformation.labelVariables.size(); ++index) {
solver.add(!variableInformation.labelVariables[index] || variableInformation.originalAuxiliaryVariables[index]);
}
} }
/*! /*!
@ -185,7 +198,6 @@ namespace storm {
// * identify labels that can directly precede a given action // * identify labels that can directly precede a given action
// * identify labels that directly reach a target state // * identify labels that directly reach a target state
// * identify labels that can directly follow a given action // * identify labels that can directly follow a given action
// * identify labels that can be found on each path to the target states.
std::set<uint_fast64_t> initialLabels; std::set<uint_fast64_t> initialLabels;
std::map<uint_fast64_t, std::set<uint_fast64_t>> precedingLabels; std::map<uint_fast64_t, std::set<uint_fast64_t>> precedingLabels;
@ -650,11 +662,29 @@ namespace storm {
return aux[0]; return aux[0];
} }
/*!
* Determines whether the bit at the given index is set in the given value.
*
* @param value The value to test.
* @param index The index of the bit to test.
* @return True iff the bit at the given index is set in the given value.
*/
static bool bitIsSet(uint64_t value, uint64_t index) { static bool bitIsSet(uint64_t value, uint64_t index) {
uint64_t mask = 1 << (index & 63); uint64_t mask = 1 << (index & 63);
return (value & mask) != 0; return (value & mask) != 0;
} }
/*!
* Asserts a constraint in the given solver that expresses that the value encoded by the given input variables
* may at most represent the number k. The constraint is associated with a relaxation variable, that is
* returned by this function and may be used to deactivate the constraint.
*
* @param context The Z3 context in which to build the expressions.
* @param solver The solver to use for the satisfiability evaluation.
* @param input The variables that encode the value to restrict.
* @param k The bound for the binary-encoded value.
* @return The relaxation variable associated with the constraint.
*/
static z3::expr assertLessOrEqualKRelaxed(z3::context& context, z3::solver& solver, std::vector<z3::expr> const& input, uint64_t k) { static z3::expr assertLessOrEqualKRelaxed(z3::context& context, z3::solver& solver, std::vector<z3::expr> const& input, uint64_t k) {
LOG4CPLUS_DEBUG(logger, "Asserting solution has size less or equal " << k << "."); LOG4CPLUS_DEBUG(logger, "Asserting solution has size less or equal " << k << ".");
@ -695,17 +725,13 @@ namespace storm {
* @param solver The solver to use for the satisfiability evaluation. * @param solver The solver to use for the satisfiability evaluation.
* @param input The binary encoded input number. * @param input The binary encoded input number.
*/ */
static void assertLessOrEqualOne(z3::context& context, z3::solver& solver, std::vector<z3::expr> const& input) {
std::vector<z3::expr> tmp;
tmp.reserve(input.size() - 1);
for (uint_fast64_t index = 1; index < input.size(); ++index) {
tmp.push_back(!input[index]);
}
assertConjunction(context, solver, tmp);
static void assertLessOrEqualOne(z3::context& context, z3::solver& solver, std::vector<z3::expr> input) {
std::transform(input.begin(), input.end(), input.begin(), [](z3::expr e) -> z3::expr { return !e; });
assertConjunction(context, solver, input);
} }
/*! /*!
* Asserts that at most one of the blocking variables may be true at any time.
* Asserts that at most one of given literals may be true at any time.
* *
* @param context The Z3 context in which to build the expressions. * @param context The Z3 context in which to build the expressions.
* @param solver The solver to use for the satisfiability evaluation. * @param solver The solver to use for the satisfiability evaluation.
@ -809,17 +835,24 @@ namespace storm {
solver.add(blockSolutionExpression); solver.add(blockSolutionExpression);
} }
static std::set<uint_fast64_t> getUsedLabelSet(z3::context& context, z3::model const& model, VariableInformation const& variableInformation, std::vector<z3::expr> const& usedVariables) {
/*!
* Determines the set of labels that was chosen by the given model.
*
* @param context The Z3 context in which to build the expressions.
* @param model The Z3 model from which to extract the information.
* @param variableInformation A structure with information about the variables of the solver.
*/
static std::set<uint_fast64_t> getUsedLabelSet(z3::context& context, z3::model const& model, VariableInformation const& variableInformation) {
std::set<uint_fast64_t> result; std::set<uint_fast64_t> result;
for (auto const& labelIndexPair : variableInformation.labelToIndexMap) { for (auto const& labelIndexPair : variableInformation.labelToIndexMap) {
z3::expr auxValue = model.eval(usedVariables.at(labelIndexPair.second));
z3::expr auxValue = model.eval(variableInformation.labelVariables.at(labelIndexPair.second));
// Check whether the auxiliary variable was set or not. // Check whether the auxiliary variable was set or not.
if (eq(auxValue, context.bool_val(true))) { if (eq(auxValue, context.bool_val(true))) {
result.insert(labelIndexPair.first); result.insert(labelIndexPair.first);
} else if (eq(auxValue, context.bool_val(false))) { } else if (eq(auxValue, context.bool_val(false))) {
// Nothing to do in this case. // Nothing to do in this case.
} else if (eq(auxValue, usedVariables.at(labelIndexPair.second))) {
} else if (eq(auxValue, variableInformation.labelVariables.at(labelIndexPair.second))) {
// If the auxiliary variable is a don't care, then we don't take the corresponding command. // If the auxiliary variable is a don't care, then we don't take the corresponding command.
} else { } else {
throw storm::exceptions::InvalidStateException() << "Could not retrieve value of boolean variable from illegal value."; throw storm::exceptions::InvalidStateException() << "Could not retrieve value of boolean variable from illegal value.";
@ -828,41 +861,14 @@ namespace storm {
return result; return result;
} }
/*! /*!
* Finds the smallest set of labels such that the constraint system of the solver is still satisfiable.
* Asserts an adder structure in the given solver that counts the number of variables that are set to true
* out of the given variables.
* *
* @param context The Z3 context in which to build the expressions. * @param context The Z3 context in which to build the expressions.
* @param solver The solver to use for the satisfiability evaluation.
* @param variableInformation A structure with information about the variables for the labels.
* @return The smallest set of labels such that the constraint system of the solver is still satisfiable.
* @param solver The solver for which to add the adder.
* @param variableInformation A structure with information about the variables of the solver.
*/ */
static std::set<uint_fast64_t> findSmallestCommandSet(z3::context& context, z3::solver& solver, VariableInformation& variableInformation, std::vector<z3::expr>& softConstraints, uint_fast64_t& currentBound, uint_fast64_t& nextFreeVariableIndex, bool useFuMalik = false) {
if (useFuMalik) {
while (!fuMalikMaxsatStep(context, solver, variableInformation.auxiliaryVariables, softConstraints, nextFreeVariableIndex)) {
// Intentionally left empty.
}
// Now we are ready to construct the label set from the model of the solver.
return getUsedLabelSet(context, solver.get_model(), variableInformation, variableInformation.originalAuxiliaryVariables);
} else {
// Check if we can find a solution with the current bound.
z3::expr assumption = !variableInformation.auxiliaryVariables.back();
while (solver.check(1, &assumption) == z3::unsat) {
// If the constraints are unsatisfiable, we need to relax the last at-most-k constraint and
// try with an increased bound.
LOG4CPLUS_DEBUG(logger, "Constraint system is unsatisfiable with at most " << currentBound << " taken commands; increasing bound.");
solver.add(variableInformation.auxiliaryVariables.back());
variableInformation.auxiliaryVariables.push_back(assertLessOrEqualKRelaxed(context, solver, variableInformation.adderVariables, ++currentBound));
assumption = !variableInformation.auxiliaryVariables.back();
}
// At this point we know that the constraint system was satisfiable, so compute the induced label
// set and return it.
return getUsedLabelSet(context, solver.get_model(), variableInformation, variableInformation.labelVariables);
}
}
static std::vector<z3::expr> assertAdder(z3::context& context, z3::solver& solver, VariableInformation const& variableInformation) { static std::vector<z3::expr> assertAdder(z3::context& context, z3::solver& solver, VariableInformation const& variableInformation) {
std::stringstream variableName; std::stringstream variableName;
std::vector<z3::expr> result; std::vector<z3::expr> result;
@ -878,11 +884,41 @@ namespace storm {
return result; return result;
} }
/*!
* Finds the smallest set of labels such that the constraint system of the solver is still satisfiable.
*
* @param context The Z3 context in which to build the expressions.
* @param solver The solver to use for the satisfiability evaluation.
* @param variableInformation A structure with information about the variables of the solver.
* @param currentBound The currently known lower bound for the number of labels that need to be enabled
* in order to satisfy the constraint system.
* @return The smallest set of labels such that the constraint system of the solver is satisfiable.
*/
static std::set<uint_fast64_t> findSmallestCommandSet(z3::context& context, z3::solver& solver, VariableInformation& variableInformation, uint_fast64_t& currentBound) {
// Check if we can find a solution with the current bound.
z3::expr assumption = !variableInformation.auxiliaryVariables.back();
// As long as the constraints are unsatisfiable, we need to relax the last at-most-k constraint and
// try with an increased bound.
while (solver.check(1, &assumption) == z3::unsat) {
LOG4CPLUS_DEBUG(logger, "Constraint system is unsatisfiable with at most " << currentBound << " taken commands; increasing bound.");
solver.add(variableInformation.auxiliaryVariables.back());
variableInformation.auxiliaryVariables.push_back(assertLessOrEqualKRelaxed(context, solver, variableInformation.adderVariables, ++currentBound));
assumption = !variableInformation.auxiliaryVariables.back();
}
// At this point we know that the constraint system was satisfiable, so compute the induced label
// set and return it.
return getUsedLabelSet(context, solver.get_model(), variableInformation);
}
#endif #endif
public: public:
static std::set<uint_fast64_t> getMinimalCommandSet(storm::ir::Program program, std::string const& constantDefinitionString, storm::models::Mdp<T> const& labeledMdp, storm::storage::BitVector const& phiStates, storm::storage::BitVector const& psiStates, double probabilityThreshold, bool checkThresholdFeasible = false, bool useFuMalik = false) {
static std::set<uint_fast64_t> getMinimalCommandSet(storm::ir::Program program, std::string const& constantDefinitionString, storm::models::Mdp<T> const& labeledMdp, storm::storage::BitVector const& phiStates, storm::storage::BitVector const& psiStates, double probabilityThreshold, bool checkThresholdFeasible = false) {
#ifdef STORM_HAVE_Z3 #ifdef STORM_HAVE_Z3
auto startTime = std::chrono::high_resolution_clock::now();
storm::utility::ir::defineUndefinedConstants(program, constantDefinitionString); storm::utility::ir::defineUndefinedConstants(program, constantDefinitionString);
// (0) Check whether the MDP is indeed labeled. // (0) Check whether the MDP is indeed labeled.
@ -890,7 +926,16 @@ namespace storm {
throw storm::exceptions::InvalidArgumentException() << "Minimal command set generation is impossible for unlabeled model."; throw storm::exceptions::InvalidArgumentException() << "Minimal command set generation is impossible for unlabeled model.";
} }
// (1) FIXME: check whether its possible to exceed the threshold if checkThresholdFeasible is set.
// (1) Check whether its possible to exceed the threshold if checkThresholdFeasible is set.
double maximalReachabilityProbability = 0;
storm::modelchecker::prctl::SparseMdpPrctlModelChecker<T> modelchecker(labeledMdp, new storm::solver::GmmxxNondeterministicLinearEquationSolver<T>());
std::vector<T> result = modelchecker.checkUntil(false, phiStates, psiStates, false, nullptr);
for (auto state : labeledMdp.getInitialStates()) {
maximalReachabilityProbability = std::max(maximalReachabilityProbability, result[state]);
}
if (maximalReachabilityProbability <= probabilityThreshold) {
throw storm::exceptions::InvalidArgumentException() << "Given probability threshold " << probabilityThreshold << " can not be achieved in model with maximal reachability probability of " << maximalReachabilityProbability << ".";
}
// (2) Identify all states and commands that are relevant, because only these need to be considered later. // (2) Identify all states and commands that are relevant, because only these need to be considered later.
RelevancyInformation relevancyInformation = determineRelevantStatesAndLabels(labeledMdp, phiStates, psiStates); RelevancyInformation relevancyInformation = determineRelevantStatesAndLabels(labeledMdp, phiStates, psiStates);
@ -905,52 +950,32 @@ namespace storm {
// (5) After all variables have been created, create a solver for that context. // (5) After all variables have been created, create a solver for that context.
z3::solver solver(context); z3::solver solver(context);
// (5) Build the initial constraint system.
if (useFuMalik) {
assertInitialConstraints(program, labeledMdp, psiStates, context, solver, variableInformation, relevancyInformation);
LOG4CPLUS_DEBUG(logger, "Asserted initial constraints.");
}
// (6) If we are supposed to use the counter-circuit method, we need to assert the adder circuit.
if (useFuMalik) {
variableInformation.auxiliaryVariables = variableInformation.originalAuxiliaryVariables;
} else {
// (6) Now assert an adder whose result variables can later be used to constrain the nummber of label
// variables that were set to true. Initially, we are looking for a solution that has no label enabled
// and subsequently relax that.
variableInformation.adderVariables = assertAdder(context, solver, variableInformation); variableInformation.adderVariables = assertAdder(context, solver, variableInformation);
variableInformation.auxiliaryVariables.push_back(assertLessOrEqualKRelaxed(context, solver, variableInformation.adderVariables, 0)); variableInformation.auxiliaryVariables.push_back(assertLessOrEqualKRelaxed(context, solver, variableInformation.adderVariables, 0));
}
// (6) Add constraints that cut off a lot of suboptimal solutions.
// (7) Add constraints that cut off a lot of suboptimal solutions.
assertExplicitCuts(labeledMdp, psiStates, variableInformation, relevancyInformation, context, solver); assertExplicitCuts(labeledMdp, psiStates, variableInformation, relevancyInformation, context, solver);
LOG4CPLUS_DEBUG(logger, "Asserted explicit cuts."); LOG4CPLUS_DEBUG(logger, "Asserted explicit cuts.");
assertSymbolicCuts(program, labeledMdp, variableInformation, relevancyInformation, context, solver); assertSymbolicCuts(program, labeledMdp, variableInformation, relevancyInformation, context, solver);
LOG4CPLUS_DEBUG(logger, "Asserted symbolic cuts."); LOG4CPLUS_DEBUG(logger, "Asserted symbolic cuts.");
// (7) Find the smallest set of commands that satisfies all constraints. If the probability of
// (8) Find the smallest set of commands that satisfies all constraints. If the probability of
// satisfying phi until psi exceeds the given threshold, the set of labels is minimal and can be returned. // satisfying phi until psi exceeds the given threshold, the set of labels is minimal and can be returned.
// Otherwise, the current solution has to be ruled out and the next smallest solution is retrieved from // Otherwise, the current solution has to be ruled out and the next smallest solution is retrieved from
// the solver. // the solver.
// Start by building the initial vector of constraints out of which we want to satisfy maximally many.
std::vector<z3::expr> softConstraints;
softConstraints.reserve(variableInformation.labelVariables.size());
for (auto const& labelExpr : variableInformation.labelVariables) {
softConstraints.push_back(!labelExpr);
}
// Create an index counter that keeps track of the next free index we can use for blocking variables.
uint_fast64_t nextFreeVariableIndex = 0;
// Keep track of the command set we used to achieve the current probability as well as the probability
// itself.
// Set up some variables for the iterations.
std::set<uint_fast64_t> commandSet(relevancyInformation.relevantLabels); std::set<uint_fast64_t> commandSet(relevancyInformation.relevantLabels);
double maximalReachabilityProbability = 0;
bool done = false; bool done = false;
uint_fast64_t iterations = 0; uint_fast64_t iterations = 0;
uint_fast64_t currentBound = 0; uint_fast64_t currentBound = 0;
maximalReachabilityProbability = 0;
do { do {
LOG4CPLUS_DEBUG(logger, "Computing minimal command set."); LOG4CPLUS_DEBUG(logger, "Computing minimal command set.");
commandSet = findSmallestCommandSet(context, solver, variableInformation, softConstraints, currentBound, nextFreeVariableIndex, useFuMalik);
commandSet = findSmallestCommandSet(context, solver, variableInformation, currentBound);
LOG4CPLUS_DEBUG(logger, "Computed minimal command set of size " << commandSet.size() << "."); LOG4CPLUS_DEBUG(logger, "Computed minimal command set of size " << commandSet.size() << ".");
// Restrict the given MDP to the current set of labels and compute the reachability probability. // Restrict the given MDP to the current set of labels and compute the reachability probability.
@ -976,13 +1001,12 @@ namespace storm {
} while (!done); } while (!done);
LOG4CPLUS_INFO(logger, "Found minimal label set after " << iterations << " iterations."); LOG4CPLUS_INFO(logger, "Found minimal label set after " << iterations << " iterations.");
// Verify the results.
storm::ir::Program programCopy(program);
programCopy.restrictCommands(commandSet);
std::cout << programCopy.toString() << std::endl;
// (8) Return the resulting command set after undefining the constants.
// (9) Return the resulting command set after undefining the constants.
storm::utility::ir::undefineUndefinedConstants(program); storm::utility::ir::undefineUndefinedConstants(program);
auto endTime = std::chrono::high_resolution_clock::now();
LOG4CPLUS_WARN(logger, "Computed minimal command set of size " << commandSet.size() << " in " << std::chrono::duration_cast<std::chrono::milliseconds>(endTime - startTime).count() << "ms.");
return commandSet; return commandSet;
#else #else

26
src/storm.cpp
View File

@ -338,27 +338,12 @@ int main(const int argc, const char* argv[]) {
model->printModelInformationToStream(std::cout); model->printModelInformationToStream(std::cout);
// Enable the following lines to test the MinimalLabelSetGenerator. // Enable the following lines to test the MinimalLabelSetGenerator.
// if (model->getType() == storm::models::MDP) {
// std::shared_ptr<storm::models::Mdp<double>> labeledMdp = model->as<storm::models::Mdp<double>>();
// storm::storage::BitVector const& finishedStates = labeledMdp->getLabeledStates("finished");
// storm::storage::BitVector const& allCoinsEqual1States = labeledMdp->getLabeledStates("all_coins_equal_1");
// storm::storage::BitVector targetStates = finishedStates & allCoinsEqual1States;
// std::set<uint_fast64_t> labels = storm::counterexamples::MILPMinimalLabelSetGenerator<double>::getMinimalLabelSet(*labeledMdp, storm::storage::BitVector(labeledMdp->getNumberOfStates(), true), targetStates, 0.4, true, true);
//
// std::cout << "Found solution with " << labels.size() << " commands." << std::endl;
// for (uint_fast64_t label : labels) {
// std::cout << label << ", ";
// }
// std::cout << std::endl;
// }
// Enable the following lines to test the SMTMinimalCommandSetGenerator.
if (model->getType() == storm::models::MDP) { if (model->getType() == storm::models::MDP) {
std::shared_ptr<storm::models::Mdp<double>> labeledMdp = model->as<storm::models::Mdp<double>>(); std::shared_ptr<storm::models::Mdp<double>> labeledMdp = model->as<storm::models::Mdp<double>>();
storm::storage::BitVector const& finishedStates = labeledMdp->getLabeledStates("finished"); storm::storage::BitVector const& finishedStates = labeledMdp->getLabeledStates("finished");
storm::storage::BitVector const& allCoinsEqual1States = labeledMdp->getLabeledStates("all_coins_equal_1"); storm::storage::BitVector const& allCoinsEqual1States = labeledMdp->getLabeledStates("all_coins_equal_1");
storm::storage::BitVector targetStates = finishedStates & allCoinsEqual1States; storm::storage::BitVector targetStates = finishedStates & allCoinsEqual1States;
std::set<uint_fast64_t> labels = storm::counterexamples::SMTMinimalCommandSetGenerator<double>::getMinimalCommandSet(program, constants, *labeledMdp, storm::storage::BitVector(labeledMdp->getNumberOfStates(), true), targetStates, 0.4, true);
std::set<uint_fast64_t> labels = storm::counterexamples::MILPMinimalLabelSetGenerator<double>::getMinimalLabelSet(*labeledMdp, storm::storage::BitVector(labeledMdp->getNumberOfStates(), true), targetStates, 0.4, true, true);
std::cout << "Found solution with " << labels.size() << " commands." << std::endl; std::cout << "Found solution with " << labels.size() << " commands." << std::endl;
for (uint_fast64_t label : labels) { for (uint_fast64_t label : labels) {
@ -366,6 +351,15 @@ int main(const int argc, const char* argv[]) {
} }
std::cout << std::endl; std::cout << std::endl;
} }
// Enable the following lines to test the SMTMinimalCommandSetGenerator.
// if (model->getType() == storm::models::MDP) {
// std::shared_ptr<storm::models::Mdp<double>> labeledMdp = model->as<storm::models::Mdp<double>>();
// storm::storage::BitVector const& finishedStates = labeledMdp->getLabeledStates("finished");
// storm::storage::BitVector const& allCoinsEqual1States = labeledMdp->getLabeledStates("all_coins_equal_1");
// storm::storage::BitVector targetStates = finishedStates & allCoinsEqual1States;
// std::set<uint_fast64_t> labels = storm::counterexamples::SMTMinimalCommandSetGenerator<double>::getMinimalCommandSet(program, constants, *labeledMdp, storm::storage::BitVector(labeledMdp->getNumberOfStates(), true), targetStates, 0.4, true);
// }
} }
// Perform clean-up and terminate. // Perform clean-up and terminate.

Write Preview
Loading…
Cancel
Save