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Working towards reachability reward properties for parametric DTMCs. 

Former-commit-id: addf59ca34
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dehnert 10 years ago
parent
edfbfaa924
commit
3a18d60925
3 changed files with 91 additions and 139 deletions
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  1. 207
      src/modelchecker/reachability/SparseSccModelChecker.cpp
  2. 15
      src/modelchecker/reachability/SparseSccModelChecker.h
  3. 8
      src/stormParametric.cpp

207
src/modelchecker/reachability/SparseSccModelChecker.cpp
View File

@ -17,7 +17,7 @@ namespace storm {
namespace reachability {
template<typename ValueType>
ValueType SparseSccModelChecker<ValueType>::computeReachabilityProbability(storm::storage::SparseMatrix<ValueType> const& transitionMatrix, std::vector<ValueType>& oneStepProbabilities, storm::storage::SparseMatrix<ValueType> const& backwardTransitions, storm::storage::BitVector const& initialStates, storm::storage::BitVector const& phiStates, storm::storage::BitVector const& psiStates, boost::optional<std::vector<std::size_t>> const& statePriorities) {
ValueType SparseSccModelChecker<ValueType>::computeReachabilityValue(storm::storage::SparseMatrix<ValueType> const& transitionMatrix, std::vector<ValueType>& oneStepProbabilities, storm::storage::SparseMatrix<ValueType> const& backwardTransitions, storm::storage::BitVector const& initialStates, storm::storage::BitVector const& phiStates, storm::storage::BitVector const& psiStates, boost::optional<std::vector<ValueType>>& stateRewards, boost::optional<std::vector<std::size_t>> const& statePriorities) {
std::chrono::high_resolution_clock::time_point totalTimeStart = std::chrono::high_resolution_clock::now();
std::chrono::high_resolution_clock::time_point conversionStart = std::chrono::high_resolution_clock::now();
@ -45,7 +45,7 @@ namespace storm {
STORM_PRINT_AND_LOG("Eliminating " << states.size() << " states using the state elimination technique." << std::endl);
for (auto const& state : states) {
eliminateState(flexibleMatrix, oneStepProbabilities, state, flexibleBackwardTransitions);
eliminateState(flexibleMatrix, oneStepProbabilities, state, flexibleBackwardTransitions, stateRewards);
}
STORM_PRINT_AND_LOG("Eliminated " << states.size() << " states." << std::endl);
} else if (storm::settings::parametricSettings().getEliminationMethod() == storm::settings::modules::ParametricSettings::EliminationMethod::Hybrid) {
@ -53,13 +53,13 @@ namespace storm {
storm::utility::ConstantsComparator<ValueType> comparator;
std::vector<storm::storage::sparse::state_type> entryStateQueue;
STORM_PRINT_AND_LOG("Eliminating " << subsystem.size() << " states using the hybrid elimination technique." << std::endl);
maximalDepth = treatScc(flexibleMatrix, oneStepProbabilities, initialStates, subsystem, transitionMatrix, flexibleBackwardTransitions, false, 0, storm::settings::parametricSettings().getMaximalSccSize(), entryStateQueue, comparator, statePriorities);
maximalDepth = treatScc(flexibleMatrix, oneStepProbabilities, initialStates, subsystem, transitionMatrix, flexibleBackwardTransitions, false, 0, storm::settings::parametricSettings().getMaximalSccSize(), entryStateQueue, comparator, stateRewards, statePriorities);
// If the entry states were to be eliminated last, we need to do so now.
STORM_LOG_DEBUG("Eliminating " << entryStateQueue.size() << " entry states as a last step.");
if (storm::settings::parametricSettings().isEliminateEntryStatesLastSet()) {
for (auto const& state : entryStateQueue) {
eliminateState(flexibleMatrix, oneStepProbabilities, state, flexibleBackwardTransitions);
eliminateState(flexibleMatrix, oneStepProbabilities, state, flexibleBackwardTransitions, stateRewards);
}
}
STORM_PRINT_AND_LOG("Eliminated " << subsystem.size() << " states." << std::endl);
@ -67,7 +67,7 @@ namespace storm {
// Finally eliminate initial state.
STORM_PRINT_AND_LOG("Eliminating initial state " << *initialStates.begin() << "." << std::endl);
eliminateState(flexibleMatrix, oneStepProbabilities, *initialStates.begin(), flexibleBackwardTransitions);
eliminateState(flexibleMatrix, oneStepProbabilities, *initialStates.begin(), flexibleBackwardTransitions, stateRewards);
// Make sure that we have eliminated all transitions from the initial state.
STORM_LOG_ASSERT(flexibleMatrix.getRow(*initialStates.begin()).empty(), "The transitions of the initial states are non-empty.");
@ -101,38 +101,59 @@ namespace storm {
return storm::utility::simplify(oneStepProbabilities[*initialStates.begin()]);
}
// template<typename ValueType>
// ValueType SparseSccModelChecker<ValueType>::computeReachabilityReward(storm::models::Dtmc<ValueType> const& dtmc, std::shared_ptr<storm::properties::prctl::Ap<double>> const& phiFormula, std::shared_ptr<storm::properties::prctl::Ap<double>> const& psiFormula) {
// // Now retrieve the appropriate bitvectors from the atomic propositions.
// storm::storage::BitVector phiStates = phiFormula->getAp() != "true" ? dtmc.getLabeledStates(phiFormula->getAp()) : storm::storage::BitVector(dtmc.getNumberOfStates(), true);
// storm::storage::BitVector psiStates = dtmc.getLabeledStates(psiFormula->getAp());
//
// // Do some sanity checks to establish some required properties.
// STORM_LOG_THROW(!dtmc.hasTransitionRewards(), storm::exceptions::IllegalArgumentException, "Input model does have transition-based rewards, which are currently unsupported.");
// STORM_LOG_THROW(dtmc.hasStateRewards(), storm::exceptions::IllegalArgumentException, "Input model does not have a state-based reward model.");
// STORM_LOG_THROW(dtmc.getInitialStates().getNumberOfSetBits() == 1, storm::exceptions::IllegalArgumentException, "Input model is required to have exactly one initial state.");
//
// // Then, compute the subset of states that has a reachability reward less than infinity.
// storm::storage::BitVector trueStates(dtmc.getNumberOfStates(), true);
// storm::storage::BitVector infinityStates = storm::utility::graph::performProb1(dtmc.getBackwardTransitions(), trueStates, psiStates);
// infinityStates.complement();
// storm::storage::BitVector maybeStates = ~psiStates & ~infinityStates;
//
// // If the initial state is known to have 0 reward or an infinite reward value, we can directly return the result.
// STORM_LOG_THROW(dtmc.getInitialStates().isDisjointFrom(infinityStates), storm::exceptions::IllegalArgumentException, "Initial state has infinite reward.");
// if (!dtmc.getInitialStates().isDisjointFrom(psiStates)) {
// STORM_LOG_DEBUG("The reward of all initial states was found in a preprocessing step.");
// return storm::utility::constantZero<ValueType>();
// }
//
// // Determine the set of states that is reachable from the initial state without jumping over a target state.
// storm::storage::BitVector reachableStates = storm::utility::graph::getReachableStates(dtmc.getTransitionMatrix(), dtmc.getInitialStates(), maybeStates, psiStates);
//
// // Subtract from the maybe states the set of states that is not reachable (on a path from the initial to a target state).
// maybeStates &= reachableStates;
//
//
// }
template<typename ValueType>
ValueType SparseSccModelChecker<ValueType>::computeReachabilityReward(storm::models::Dtmc<ValueType> const& dtmc, std::shared_ptr<storm::properties::prctl::Ap<double>> const& phiFormula, std::shared_ptr<storm::properties::prctl::Ap<double>> const& psiFormula) {
// Now retrieve the appropriate bitvectors from the atomic propositions.
storm::storage::BitVector phiStates = phiFormula->getAp() != "true" ? dtmc.getLabeledStates(phiFormula->getAp()) : storm::storage::BitVector(dtmc.getNumberOfStates(), true);
storm::storage::BitVector psiStates = dtmc.getLabeledStates(psiFormula->getAp());
// Do some sanity checks to establish some required properties.
STORM_LOG_THROW(!dtmc.hasTransitionRewards(), storm::exceptions::IllegalArgumentException, "Input model does have transition-based rewards, which are currently unsupported.");
STORM_LOG_THROW(dtmc.hasStateRewards(), storm::exceptions::IllegalArgumentException, "Input model does not have a state-based reward model.");
STORM_LOG_THROW(dtmc.getInitialStates().getNumberOfSetBits() == 1, storm::exceptions::IllegalArgumentException, "Input model is required to have exactly one initial state.");
// Then, compute the subset of states that has a reachability reward less than infinity.
storm::storage::BitVector trueStates(dtmc.getNumberOfStates(), true);
storm::storage::BitVector infinityStates = storm::utility::graph::performProb1(dtmc.getBackwardTransitions(), trueStates, psiStates);
infinityStates.complement();
storm::storage::BitVector maybeStates = ~psiStates & ~infinityStates;
// If the initial state is known to have 0 reward or an infinite reward value, we can directly return the result.
STORM_LOG_THROW(dtmc.getInitialStates().isDisjointFrom(infinityStates), storm::exceptions::IllegalArgumentException, "Initial state has infinite reward.");
if (!dtmc.getInitialStates().isDisjointFrom(psiStates)) {
STORM_LOG_DEBUG("The reward of all initial states was found in a preprocessing step.");
return storm::utility::constantZero<ValueType>();
}
// Determine the set of states that is reachable from the initial state without jumping over a target state.
storm::storage::BitVector reachableStates = storm::utility::graph::getReachableStates(dtmc.getTransitionMatrix(), dtmc.getInitialStates(), maybeStates, psiStates);
// Subtract from the maybe states the set of states that is not reachable (on a path from the initial to a target state).
maybeStates &= reachableStates;
// Create a vector for the probabilities to go to a state with probability 1 in one step.
std::vector<ValueType> oneStepProbabilities = dtmc.getTransitionMatrix().getConstrainedRowSumVector(maybeStates, psiStates);
// Create a vector that holds the one-step rewards.
std::vector<ValueType> oneStepRewards = std::vector<ValueType>(maybeStates.getNumberOfSetBits(), storm::utility::zero<ValueType>());
// Project the state reward vector to all maybe-states.
boost::optional<std::vector<ValueType>> stateRewards(maybeStates.getNumberOfSetBits());
storm::utility::vector::selectVectorValues(stateRewards.get(), maybeStates, dtmc.getStateRewardVector());
// Determine the set of initial states of the sub-DTMC.
storm::storage::BitVector newInitialStates = dtmc.getInitialStates() % maybeStates;
// We then build the submatrix that only has the transitions of the maybe states.
storm::storage::SparseMatrix<ValueType> submatrix = dtmc.getTransitionMatrix().getSubmatrix(false, maybeStates, maybeStates);
storm::storage::SparseMatrix<ValueType> submatrixTransposed = submatrix.transpose();
// Before starting the model checking process, we assign priorities to states so we can use them to
// impose ordering constraints later.
std::vector<std::size_t> statePriorities = getStatePriorities(submatrix, submatrixTransposed, newInitialStates, oneStepProbabilities);
return computeReachabilityValue(submatrix, oneStepRewards, submatrixTransposed, newInitialStates, phiStates, psiStates, stateRewards, statePriorities);
}
template<typename ValueType>
ValueType SparseSccModelChecker<ValueType>::computeReachabilityProbability(storm::models::Dtmc<ValueType> const& dtmc, std::shared_ptr<storm::properties::prctl::Ap<double>> const& phiFormula, std::shared_ptr<storm::properties::prctl::Ap<double>> const& psiFormula) {
@ -173,8 +194,16 @@ namespace storm {
// Before starting the model checking process, we assign priorities to states so we can use them to
// impose ordering constraints later.
std::vector<std::size_t> statePriorities(submatrix.getRowCount());
std::vector<std::size_t> states(submatrix.getRowCount());
std::vector<std::size_t> statePriorities = getStatePriorities(submatrix, submatrixTransposed, newInitialStates, oneStepProbabilities);
boost::optional<std::vector<ValueType>> missingStateRewards;
return computeReachabilityValue(submatrix, oneStepProbabilities, submatrixTransposed, newInitialStates, phiStates, psiStates, missingStateRewards, statePriorities);
}
template<typename ValueType>
std::vector<std::size_t> SparseSccModelChecker<ValueType>::getStatePriorities(storm::storage::SparseMatrix<ValueType> const& transitionMatrix, storm::storage::SparseMatrix<ValueType> const& transitionMatrixTransposed, storm::storage::BitVector const& initialStates, std::vector<ValueType> const& oneStepProbabilities) {
std::vector<std::size_t> statePriorities(transitionMatrix.getRowCount());
std::vector<std::size_t> states(transitionMatrix.getRowCount());
for (std::size_t index = 0; index < states.size(); ++index) {
states[index] = index;
}
@ -183,19 +212,19 @@ namespace storm {
} else {
std::vector<std::size_t> distances;
if (storm::settings::parametricSettings().getEliminationOrder() == storm::settings::modules::ParametricSettings::EliminationOrder::Forward || storm::settings::parametricSettings().getEliminationOrder() == storm::settings::modules::ParametricSettings::EliminationOrder::ForwardReversed) {
distances = storm::utility::graph::getDistances(submatrix, newInitialStates);
distances = storm::utility::graph::getDistances(transitionMatrix, initialStates);
} else if (storm::settings::parametricSettings().getEliminationOrder() == storm::settings::modules::ParametricSettings::EliminationOrder::Backward || storm::settings::parametricSettings().getEliminationOrder() == storm::settings::modules::ParametricSettings::EliminationOrder::BackwardReversed) {
// Since the target states were eliminated from the matrix already, we construct a replacement by
// treating all states that have some non-zero probability to go to a target state in one step.
storm::utility::ConstantsComparator<ValueType> comparator;
storm::storage::BitVector pseudoTargetStates(submatrix.getRowCount());
storm::storage::BitVector pseudoTargetStates(transitionMatrix.getRowCount());
for (std::size_t index = 0; index < oneStepProbabilities.size(); ++index) {
if (!comparator.isZero(oneStepProbabilities[index])) {
pseudoTargetStates.set(index);
}
}
distances = storm::utility::graph::getDistances(submatrixTransposed, pseudoTargetStates);
distances = storm::utility::graph::getDistances(transitionMatrixTransposed, pseudoTargetStates);
} else {
STORM_LOG_ASSERT(false, "Illegal sorting order selected.");
}
@ -214,7 +243,7 @@ namespace storm {
statePriorities[states[index]] = index;
}
return computeReachabilityProbability(submatrix, oneStepProbabilities, submatrixTransposed, newInitialStates, phiStates, psiStates, statePriorities);
return statePriorities;
}
template<typename ValueType>
@ -232,7 +261,7 @@ namespace storm {
}
template<typename ValueType>
uint_fast64_t SparseSccModelChecker<ValueType>::treatScc(FlexibleSparseMatrix<ValueType>& matrix, std::vector<ValueType>& oneStepProbabilities, storm::storage::BitVector const& entryStates, storm::storage::BitVector const& scc, storm::storage::SparseMatrix<ValueType> const& forwardTransitions, FlexibleSparseMatrix<ValueType>& backwardTransitions, bool eliminateEntryStates, uint_fast64_t level, uint_fast64_t maximalSccSize, std::vector<storm::storage::sparse::state_type>& entryStateQueue, storm::utility::ConstantsComparator<ValueType> const& comparator, boost::optional<std::vector<std::size_t>> const& statePriorities) {
uint_fast64_t SparseSccModelChecker<ValueType>::treatScc(FlexibleSparseMatrix<ValueType>& matrix, std::vector<ValueType>& oneStepProbabilities, storm::storage::BitVector const& entryStates, storm::storage::BitVector const& scc, storm::storage::SparseMatrix<ValueType> const& forwardTransitions, FlexibleSparseMatrix<ValueType>& backwardTransitions, bool eliminateEntryStates, uint_fast64_t level, uint_fast64_t maximalSccSize, std::vector<storm::storage::sparse::state_type>& entryStateQueue, storm::utility::ConstantsComparator<ValueType> const& comparator, boost::optional<std::vector<ValueType>>& stateRewards, boost::optional<std::vector<std::size_t>> const& statePriorities) {
uint_fast64_t maximalDepth = level;
// If the SCCs are large enough, we try to split them further.
@ -264,7 +293,7 @@ namespace storm {
STORM_LOG_DEBUG("Eliminating " << trivialSccs.size() << " trivial SCCs.");
for (auto const& stateIndexPair : trivialSccs) {
eliminateState(matrix, oneStepProbabilities, stateIndexPair.first, backwardTransitions);
eliminateState(matrix, oneStepProbabilities, stateIndexPair.first, backwardTransitions, stateRewards);
remainingSccs.set(stateIndexPair.second, false);
}
STORM_LOG_DEBUG("Eliminated all trivial SCCs.");
@ -288,7 +317,7 @@ namespace storm {
}
// Recursively descend in SCC-hierarchy.
uint_fast64_t depth = treatScc(matrix, oneStepProbabilities, entryStates, newSccAsBitVector, forwardTransitions, backwardTransitions, !storm::settings::parametricSettings().isEliminateEntryStatesLastSet(), level + 1, maximalSccSize, entryStateQueue, comparator, statePriorities);
uint_fast64_t depth = treatScc(matrix, oneStepProbabilities, entryStates, newSccAsBitVector, forwardTransitions, backwardTransitions, !storm::settings::parametricSettings().isEliminateEntryStatesLastSet(), level + 1, maximalSccSize, entryStateQueue, comparator, stateRewards, statePriorities);
maximalDepth = std::max(maximalDepth, depth);
}
@ -307,7 +336,7 @@ namespace storm {
// Eliminate the remaining states that do not have a self-loop (in the current, i.e. modified)
// transition probability matrix.
for (auto const& state : states) {
eliminateState(matrix, oneStepProbabilities, state, backwardTransitions);
eliminateState(matrix, oneStepProbabilities, state, backwardTransitions, stateRewards);
}
STORM_LOG_DEBUG("Eliminated all states of SCC.");
@ -317,7 +346,7 @@ namespace storm {
if (eliminateEntryStates) {
STORM_LOG_DEBUG("Finally, eliminating/adding entry states.");
for (auto state : entryStates) {
eliminateState(matrix, oneStepProbabilities, state, backwardTransitions);
eliminateState(matrix, oneStepProbabilities, state, backwardTransitions, stateRewards);
}
STORM_LOG_DEBUG("Eliminated/added entry states.");
} else {
@ -335,7 +364,7 @@ namespace storm {
}
template<typename ValueType>
void SparseSccModelChecker<ValueType>::eliminateState(FlexibleSparseMatrix<ValueType>& matrix, std::vector<ValueType>& oneStepProbabilities, uint_fast64_t state, FlexibleSparseMatrix<ValueType>& backwardTransitions) {
void SparseSccModelChecker<ValueType>::eliminateState(FlexibleSparseMatrix<ValueType>& matrix, std::vector<ValueType>& oneStepProbabilities, uint_fast64_t state, FlexibleSparseMatrix<ValueType>& backwardTransitions, boost::optional<std::vector<ValueType>>& stateRewards) {
auto eliminationStart = std::chrono::high_resolution_clock::now();
++counter;
@ -513,86 +542,6 @@ namespace storm {
auto eliminationTime = eliminationEnd - eliminationStart;
}
template <typename ValueType>
bool SparseSccModelChecker<ValueType>::eliminateStateInPlace(storm::storage::SparseMatrix<ValueType>& matrix, std::vector<ValueType>& oneStepProbabilities, uint_fast64_t state, storm::storage::SparseMatrix<ValueType>& backwardTransitions) {
typename storm::storage::SparseMatrix<ValueType>::iterator forwardElement = matrix.getRow(state).begin();
typename storm::storage::SparseMatrix<ValueType>::iterator backwardElement = backwardTransitions.getRow(state).begin();
if (forwardElement->getValue() != storm::utility::constantOne<ValueType>() || backwardElement->getValue() != storm::utility::constantOne<ValueType>()) {
return false;
}
std::cout << "eliminating " << state << std::endl;
std::cout << "fwd element: " << *forwardElement << " and bwd element: " << *backwardElement << std::endl;
// Find the element of the predecessor that moves to the state that we want to eliminate.
typename storm::storage::SparseMatrix<ValueType>::rows forwardRow = matrix.getRow(backwardElement->getColumn());
typename storm::storage::SparseMatrix<ValueType>::iterator multiplyElement = std::find_if(forwardRow.begin(), forwardRow.end(), [&](storm::storage::MatrixEntry<typename storm::storage::SparseMatrix<ValueType>::index_type, typename storm::storage::SparseMatrix<ValueType>::value_type> const& a) { return a.getColumn() == state; });
std::cout << "before fwd: " << std::endl;
for (auto element : matrix.getRow(backwardElement->getColumn())) {
std::cout << element << ", " << std::endl;
}
// Modify the forward probability entry of the predecessor.
multiplyElement->setValue(multiplyElement->getValue() * forwardElement->getValue());
multiplyElement->setColumn(forwardElement->getColumn());
// Modify the one-step probability for the predecessor if necessary.
if (oneStepProbabilities[state] != storm::utility::constantZero<ValueType>()) {
oneStepProbabilities[backwardElement->getColumn()] += multiplyElement->getValue() * oneStepProbabilities[state];
}
// If the forward entry is not at the right position, we need to move it there.
if (multiplyElement != forwardRow.begin() && multiplyElement->getColumn() < (multiplyElement - 1)->getColumn()) {
while (multiplyElement != forwardRow.begin() && multiplyElement->getColumn() < (multiplyElement - 1)->getColumn()) {
std::swap(*multiplyElement, *(multiplyElement - 1));
--multiplyElement;
}
} else if ((multiplyElement + 1) != forwardRow.end() && multiplyElement->getColumn() > (multiplyElement + 1)->getColumn()) {
while ((multiplyElement + 1) != forwardRow.end() && multiplyElement->getColumn() > (multiplyElement + 1)->getColumn()) {
std::swap(*multiplyElement, *(multiplyElement + 1));
++multiplyElement;
}
}
std::cout << "after fwd: " << std::endl;
for (auto element : matrix.getRow(backwardElement->getColumn())) {
std::cout << element << ", " << std::endl;
}
// Find the backward element of the successor that moves to the state that we want to eliminate.
typename storm::storage::SparseMatrix<ValueType>::rows backwardRow = backwardTransitions.getRow(forwardElement->getColumn());
typename storm::storage::SparseMatrix<ValueType>::iterator backwardEntry = std::find_if(backwardRow.begin(), backwardRow.end(), [&](storm::storage::MatrixEntry<typename storm::storage::SparseMatrix<ValueType>::index_type, typename storm::storage::SparseMatrix<ValueType>::value_type> const& a) { return a.getColumn() == state; });
std::cout << "before bwd" << std::endl;
for (auto element : backwardTransitions.getRow(forwardElement->getColumn())) {
std::cout << element << ", " << std::endl;
}
// Modify the predecessor list of the successor and add the predecessor of the state we eliminate.
backwardEntry->setColumn(backwardElement->getColumn());
// If the backward entry is not at the right position, we need to move it there.
if (backwardEntry != backwardRow.begin() && backwardEntry->getColumn() < (backwardEntry - 1)->getColumn()) {
while (backwardEntry != backwardRow.begin() && backwardEntry->getColumn() < (backwardEntry - 1)->getColumn()) {
std::swap(*backwardEntry, *(backwardEntry - 1));
--backwardEntry;
}
} else if ((backwardEntry + 1) != backwardRow.end() && backwardEntry->getColumn() > (backwardEntry + 1)->getColumn()) {
while ((backwardEntry + 1) != backwardRow.end() && backwardEntry->getColumn() > (backwardEntry + 1)->getColumn()) {
std::swap(*backwardEntry, *(backwardEntry + 1));
++backwardEntry;
}
}
std::cout << "after bwd" << std::endl;
for (auto element : backwardTransitions.getRow(forwardElement->getColumn())) {
std::cout << element << ", " << std::endl;
}
return true;
}
template<typename ValueType>
FlexibleSparseMatrix<ValueType>::FlexibleSparseMatrix(index_type rows) : data(rows) {
// Intentionally left empty.

15
src/modelchecker/reachability/SparseSccModelChecker.h
View File

@ -38,15 +38,18 @@ namespace storm {
class SparseSccModelChecker {
public:
static ValueType computeReachabilityProbability(storm::models::Dtmc<ValueType> const& dtmc, std::shared_ptr<storm::properties::prctl::Ap<double>> const& phiFormula, std::shared_ptr<storm::properties::prctl::Ap<double>> const& psiFormula);
// static ValueType computeReachabilityReward(storm::models::Dtmc<ValueType> const& dtmc, std::shared_ptr<storm::properties::prctl::Ap<double>> const& phiFormula, std::shared_ptr<storm::properties::prctl::Ap<double>> const& psiFormula);
static ValueType computeReachabilityProbability(storm::storage::SparseMatrix<ValueType> const& transitionMatrix, std::vector<ValueType>& oneStepProbabilities, storm::storage::SparseMatrix<ValueType> const& backwardTransitions, storm::storage::BitVector const& initialStates, storm::storage::BitVector const& phiStates, storm::storage::BitVector const& psiStates, boost::optional<std::vector<std::size_t>> const& statePriorities = {});
static ValueType computeReachabilityReward(storm::models::Dtmc<ValueType> const& dtmc, std::shared_ptr<storm::properties::prctl::Ap<double>> const& phiFormula, std::shared_ptr<storm::properties::prctl::Ap<double>> const& psiFormula);
private:
static uint_fast64_t treatScc(FlexibleSparseMatrix<ValueType>& matrix, std::vector<ValueType>& oneStepProbabilities, storm::storage::BitVector const& entryStates, storm::storage::BitVector const& scc, storm::storage::SparseMatrix<ValueType> const& forwardTransitions, FlexibleSparseMatrix<ValueType>& backwardTransitions, bool eliminateEntryStates, uint_fast64_t level, uint_fast64_t maximalSccSize, std::vector<storm::storage::sparse::state_type>& entryStateQueue, storm::utility::ConstantsComparator<ValueType> const& comparator, boost::optional<std::vector<std::size_t>> const& distances = {});
static ValueType computeReachabilityValue(storm::storage::SparseMatrix<ValueType> const& transitionMatrix, std::vector<ValueType>& oneStepProbabilities, storm::storage::SparseMatrix<ValueType> const& backwardTransitions, storm::storage::BitVector const& initialStates, storm::storage::BitVector const& phiStates, storm::storage::BitVector const& psiStates, boost::optional<std::vector<ValueType>>& stateRewards, boost::optional<std::vector<std::size_t>> const& statePriorities = {});
static uint_fast64_t treatScc(FlexibleSparseMatrix<ValueType>& matrix, std::vector<ValueType>& oneStepProbabilities, storm::storage::BitVector const& entryStates, storm::storage::BitVector const& scc, storm::storage::SparseMatrix<ValueType> const& forwardTransitions, FlexibleSparseMatrix<ValueType>& backwardTransitions, bool eliminateEntryStates, uint_fast64_t level, uint_fast64_t maximalSccSize, std::vector<storm::storage::sparse::state_type>& entryStateQueue, storm::utility::ConstantsComparator<ValueType> const& comparator, boost::optional<std::vector<ValueType>>& stateRewards, boost::optional<std::vector<std::size_t>> const& statePriorities = {});
static FlexibleSparseMatrix<ValueType> getFlexibleSparseMatrix(storm::storage::SparseMatrix<ValueType> const& matrix, bool setAllValuesToOne = false);
static void eliminateState(FlexibleSparseMatrix<ValueType>& matrix, std::vector<ValueType>& oneStepProbabilities, uint_fast64_t state, FlexibleSparseMatrix<ValueType>& backwardTransitions);
static bool eliminateStateInPlace(storm::storage::SparseMatrix<ValueType>& matrix, std::vector<ValueType>& oneStepProbabilities, uint_fast64_t state, storm::storage::SparseMatrix<ValueType>& backwardTransitions);
static void eliminateState(FlexibleSparseMatrix<ValueType>& matrix, std::vector<ValueType>& oneStepProbabilities, uint_fast64_t state, FlexibleSparseMatrix<ValueType>& backwardTransitions, boost::optional<std::vector<ValueType>>& stateRewards);
static std::vector<std::size_t> getStatePriorities(storm::storage::SparseMatrix<ValueType> const& transitionMatrix, storm::storage::SparseMatrix<ValueType> const& transitionMatrixTransposed, storm::storage::BitVector const& initialStates, std::vector<ValueType> const& oneStepProbabilities);
};
} // namespace reachability

8
src/stormParametric.cpp
View File

@ -157,7 +157,7 @@ int main(const int argc, const char** argv) {
std::shared_ptr<storm::properties::prctl::PrctlFilter<double>> filterFormula = storm::parser::PrctlParser::parsePrctlFormula(storm::settings::generalSettings().getPctlProperty());
std::cout << "Checking formula " << *filterFormula << std::endl;
bool keepRewards = false;
bool checkRewards = false;
std::shared_ptr<storm::properties::prctl::Ap<double>> phiStateFormulaApFormula = nullptr;
std::shared_ptr<storm::properties::prctl::Ap<double>> psiStateFormulaApFormula = nullptr;
@ -180,7 +180,7 @@ int main(const int argc, const char** argv) {
STORM_LOG_THROW(reachabilityRewardFormula, storm::exceptions::InvalidPropertyException, "Illegal formula " << *filterFormula << " for parametric model checking. Note that only unbounded reachability properties (probabilities/rewards) are admitted.");
phiStateFormula = std::shared_ptr<storm::properties::prctl::Ap<double>>(new storm::properties::prctl::Ap<double>("true"));
psiStateFormula = reachabilityRewardFormula->getChild();
keepRewards = true;
checkRewards = true;
}
}
@ -192,7 +192,7 @@ int main(const int argc, const char** argv) {
// Perform bisimulation minimization if requested.
if (storm::settings::generalSettings().isBisimulationSet()) {
storm::storage::DeterministicModelBisimulationDecomposition<storm::RationalFunction> bisimulationDecomposition(*dtmc, phiStateFormulaApFormula->getAp(), psiStateFormulaApFormula->getAp(), keepRewards, storm::settings::bisimulationSettings().isWeakBisimulationSet(), false, true);
storm::storage::DeterministicModelBisimulationDecomposition<storm::RationalFunction> bisimulationDecomposition(*dtmc, phiStateFormulaApFormula->getAp(), psiStateFormulaApFormula->getAp(), checkRewards, storm::settings::bisimulationSettings().isWeakBisimulationSet(), false, true);
dtmc = bisimulationDecomposition.getQuotient()->as<storm::models::Dtmc<storm::RationalFunction>>();
dtmc->printModelInformationToStream(std::cout);
@ -204,7 +204,7 @@ int main(const int argc, const char** argv) {
storm::modelchecker::reachability::SparseSccModelChecker<storm::RationalFunction> modelchecker;
storm::RationalFunction valueFunction = modelchecker.computeReachabilityProbability(*dtmc, phiStateFormulaApFormula, psiStateFormulaApFormula);
storm::RationalFunction valueFunction = checkRewards ? modelchecker.computeReachabilityReward(*dtmc, phiStateFormulaApFormula, psiStateFormulaApFormula) : modelchecker.computeReachabilityProbability(*dtmc, phiStateFormulaApFormula, psiStateFormulaApFormula);
// STORM_PRINT_AND_LOG(std::endl << "Result: (" << carl::computePolynomial(valueFunction.nominator()) << ") / (" << carl::computePolynomial(valueFunction.denominator()) << ")" << std::endl);
// STORM_PRINT_AND_LOG(std::endl << "Result: (" << valueFunction.nominator() << ") / (" << valueFunction.denominator() << ")" << std::endl);
STORM_PRINT_AND_LOG(std::endl << "Result: " << valueFunction << std::endl);

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