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Finally, some progress. 

Former-commit-id: 2eb5173abc
main
PBerger 9 years ago
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2d51ef2c0c
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bd36c7a2e6
4 changed files with 35 additions and 27 deletions
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  1. 28
      src/modelchecker/abstraction/GameBasedMdpModelChecker.cpp
  2. 12
      src/solver/SymbolicGameSolver.cpp
  3. 2
      src/solver/SymbolicGameSolver.h
  4. 16
      test/functional/solver/FullySymbolicGameSolverTest.cpp

28
src/modelchecker/abstraction/GameBasedMdpModelChecker.cpp
View File

@ -400,35 +400,35 @@ namespace storm {
};
template<storm::dd::DdType Type, typename ValueType>
MaybeStateResult<Type, ValueType> solveMaybeStates(storm::OptimizationDirection const& player1Direction, storm::OptimizationDirection const& player2Direction, storm::abstraction::MenuGame<Type, ValueType> const& game, storm::dd::Bdd<Type> const& maybeStates, storm::dd::Bdd<Type> const& prob1States, boost::optional<MaybeStateResult<Type, ValueType>> startInfo = boost::none) {
MaybeStateResult<Type, ValueType> solveMaybeStates(storm::OptimizationDirection const& player1Direction, storm::OptimizationDirection const& player2Direction, storm::abstraction::MenuGame<Type, ValueType> const& game, storm::dd::Bdd<Type> const& prob0States, storm::dd::Bdd<Type> const& prob1States, boost::optional<MaybeStateResult<Type, ValueType>> startInfo = boost::none) {
STORM_LOG_TRACE("Performing quantative solution step. Player 1: " << player1Direction << ", player 2: " << player2Direction << ".");
// Compute the ingredients of the equation system.
storm::dd::Add<Type, ValueType> maybeStatesAdd = maybeStates.template toAdd<ValueType>();
storm::dd::Bdd<Type> allStates = game.getReachableStates();
storm::dd::Add<Type, ValueType> allStatesAdd = allStates.template toAdd<ValueType>();
storm::dd::Add<Type, ValueType> submatrix = allStatesAdd * game.getTransitionMatrix();
storm::dd::Add<Type, ValueType> prob1StatesAsColumn = prob1States.template toAdd<ValueType>().swapVariables(game.getRowColumnMetaVariablePairs());
storm::dd::Add<Type, ValueType> subvector = submatrix * prob1StatesAsColumn;
subvector = subvector.sumAbstract(game.getColumnVariables());
storm::dd::Add<Type, ValueType> maybeStatesAdd = game.getReachableStates().template toAdd<ValueType>();
storm::dd::Add<Type, ValueType> submatrix = maybeStatesAdd * game.getTransitionMatrix();
storm::dd::Add<Type, ValueType> subvector = game.getManager().template getAddZero<ValueType>();
// Cut away all columns targeting non-maybe states.
submatrix *= allStatesAdd.swapVariables(game.getRowColumnMetaVariablePairs());
submatrix *= maybeStatesAdd.swapVariables(game.getRowColumnMetaVariablePairs());
// Cut the starting vector to the maybe states of this query.
storm::dd::Add<Type, ValueType> startVector;
if (startInfo) {
startVector = startInfo.get().values * allStatesAdd;
startVector = startInfo.get().values * maybeStatesAdd;
} else {
startVector = game.getManager().template getAddZero<ValueType>();
}
// Set all target- and Prob1-states to 1 and all Prob0-states to 0
startVector = prob0States.ite(game.getManager().template getAddZero<ValueType>(), startVector);
startVector = prob1States.ite(game.getManager().template getAddOne<ValueType>(), startVector);
// Create the solver and solve the equation system.
storm::utility::solver::SymbolicGameSolverFactory<Type, ValueType> solverFactory;
std::unique_ptr<storm::solver::SymbolicGameSolver<Type, ValueType>> solver = solverFactory.create(submatrix, allStates, game.getIllegalPlayer1Mask(), game.getIllegalPlayer2Mask(), game.getRowVariables(), game.getColumnVariables(), game.getRowColumnMetaVariablePairs(), game.getPlayer1Variables(), game.getPlayer2Variables());
std::unique_ptr<storm::solver::SymbolicGameSolver<Type, ValueType>> solver = solverFactory.create(submatrix, game.getReachableStates(), game.getIllegalPlayer1Mask(), game.getIllegalPlayer2Mask(), game.getRowVariables(), game.getColumnVariables(), game.getRowColumnMetaVariablePairs(), game.getPlayer1Variables(), game.getPlayer2Variables());
solver->setGeneratePlayersStrategies(true);
auto values = solver->solveGame(player1Direction, player2Direction, startVector, subvector, startInfo ? boost::make_optional(startInfo.get().player1Strategy) : boost::none, startInfo ? boost::make_optional(startInfo.get().player2Strategy) : boost::none);
auto values = solver->solveGame(player1Direction, player2Direction, startVector, subvector, prob0States, prob1States, startInfo ? boost::make_optional(startInfo.get().player1Strategy) : boost::none, startInfo ? boost::make_optional(startInfo.get().player2Strategy) : boost::none);
return MaybeStateResult<Type, ValueType>(values, solver->getPlayer1Strategy(), solver->getPlayer2Strategy());
}
@ -533,7 +533,7 @@ namespace storm {
ValueType minValue = storm::utility::zero<ValueType>();
MaybeStateResult<Type, ValueType> minMaybeStateResult(game.getManager().template getAddZero<ValueType>(), game.getManager().getBddZero(), game.getManager().getBddZero());
if (!maybeMin.isZero()) {
minMaybeStateResult = solveMaybeStates(player1Direction, storm::OptimizationDirection::Minimize, game, maybeMin, prob01.min.second.getPlayer1States());
minMaybeStateResult = solveMaybeStates(player1Direction, storm::OptimizationDirection::Minimize, game, prob01.min.first.getPlayer1States(), prob01.min.second.getPlayer1States());
minResult = minMaybeStateResult.values;
storm::dd::Add<Type, ValueType> initialStateMin = initialStatesAdd * minResult;
// Here we can only require a non-zero count of *at most* one, because the result may actually be 0.
@ -553,7 +553,7 @@ namespace storm {
ValueType maxValue = storm::utility::one<ValueType>();
MaybeStateResult<Type, ValueType> maxMaybeStateResult(game.getManager().template getAddZero<ValueType>(), game.getManager().getBddZero(), game.getManager().getBddZero());
if (!maybeMax.isZero()) {
maxMaybeStateResult = solveMaybeStates(player1Direction, storm::OptimizationDirection::Maximize, game, maybeMax, prob01.max.second.getPlayer1States(), boost::make_optional(minMaybeStateResult));
maxMaybeStateResult = solveMaybeStates(player1Direction, storm::OptimizationDirection::Maximize, game, prob01.max.first.getPlayer1States(), prob01.max.second.getPlayer1States(), boost::make_optional(minMaybeStateResult));
maxResult = maxMaybeStateResult.values;
storm::dd::Add<Type, ValueType> initialStateMax = (initialStatesAdd * maxResult);
// Unlike in the min-case, we can require a non-zero count of 1 here, because if the max was in

12
src/solver/SymbolicGameSolver.cpp
View File

@ -25,12 +25,16 @@ namespace storm {
}
template<storm::dd::DdType Type, typename ValueType>
storm::dd::Add<Type, ValueType> SymbolicGameSolver<Type, ValueType>::solveGame(OptimizationDirection player1Goal, OptimizationDirection player2Goal, storm::dd::Add<Type, ValueType> const& x, storm::dd::Add<Type, ValueType> const& b, boost::optional<storm::dd::Bdd<Type>> const& basePlayer1Strategy, boost::optional<storm::dd::Bdd<Type>> const& basePlayer2Strategy) {
storm::dd::Add<Type, ValueType> SymbolicGameSolver<Type, ValueType>::solveGame(OptimizationDirection player1Goal, OptimizationDirection player2Goal, storm::dd::Add<Type, ValueType> const& x, storm::dd::Add<Type, ValueType> const& b, storm::dd::Bdd<Type> const& prob0States, storm::dd::Bdd<Type> const& prob1States, boost::optional<storm::dd::Bdd<Type>> const& basePlayer1Strategy, boost::optional<storm::dd::Bdd<Type>> const& basePlayer2Strategy) {
// Set up the environment.
storm::dd::Add<Type, ValueType> xCopy = x;
uint_fast64_t iterations = 0;
bool converged = false;
// Constants
storm::dd::Add<Type, ValueType> const addOne = A.getDdManager().template getAddOne<ValueType>();
storm::dd::Add<Type, ValueType> const addZero = A.getDdManager().template getAddZero<ValueType>();
// Prepare some data storage in case we need to generate strategies.
if (generatePlayer1Strategy) {
if (basePlayer1Strategy) {
@ -49,7 +53,7 @@ namespace storm {
previousPlayer2Values = (player2Strategy.get().template toAdd<ValueType>() * (this->A.multiplyMatrix(x.swapVariables(this->rowColumnMetaVariablePairs), this->columnMetaVariables) + b)).sumAbstract(this->player2Variables);
} else {
player2Strategy = A.getDdManager().getBddZero();
previousPlayer2Values = A.getDdManager().template getAddZero<ValueType>();
previousPlayer2Values = addZero;
}
}
@ -103,6 +107,10 @@ namespace storm {
tmp = newValues;
}
// Fix Prob0 and Prob1 States
tmp = prob0States.ite(addZero, tmp);
tmp = prob1States.ite(addOne, tmp);
// Now check if the process already converged within our precision.
converged = xCopy.equalModuloPrecision(tmp, this->precision, this->relative);

2
src/solver/SymbolicGameSolver.h
View File

@ -70,7 +70,7 @@ namespace storm {
* then this strategy can be used to generate a strategy that only differs from the given one if it has to.
* @return The solution vector.
*/
virtual storm::dd::Add<Type, ValueType> solveGame(OptimizationDirection player1Goal, OptimizationDirection player2Goal, storm::dd::Add<Type, ValueType> const& x, storm::dd::Add<Type, ValueType> const& b, boost::optional<storm::dd::Bdd<Type>> const& basePlayer1Strategy = boost::none, boost::optional<storm::dd::Bdd<Type>> const& basePlayer2Strategy = boost::none);
virtual storm::dd::Add<Type, ValueType> solveGame(OptimizationDirection player1Goal, OptimizationDirection player2Goal, storm::dd::Add<Type, ValueType> const& x, storm::dd::Add<Type, ValueType> const& b, storm::dd::Bdd<Type> const& prob0States, storm::dd::Bdd<Type> const& prob1States, boost::optional<storm::dd::Bdd<Type>> const& basePlayer1Strategy = boost::none, boost::optional<storm::dd::Bdd<Type>> const& basePlayer2Strategy = boost::none);
// Setters that enable the generation of the players' strategies.
void setGeneratePlayer1Strategy(bool value);

16
test/functional/solver/FullySymbolicGameSolverTest.cpp
View File

@ -49,25 +49,25 @@ TEST(FullySymbolicGameSolverTest, Solve_Cudd) {
storm::dd::Add<storm::dd::DdType::CUDD, double> b = manager->getEncoding(state.first, 2).template toAdd<double>() + manager->getEncoding(state.first, 4).template toAdd<double>();
// Now solve the game with different strategies for the players.
storm::dd::Add<storm::dd::DdType::CUDD> result = solver->solveGame(storm::OptimizationDirection::Minimize, storm::OptimizationDirection::Minimize, x, b);
storm::dd::Add<storm::dd::DdType::CUDD> result = solver->solveGame(storm::OptimizationDirection::Minimize, storm::OptimizationDirection::Minimize, x, b, manager->getBddZero(), manager->getBddZero());
result *= manager->getEncoding(state.first, 1).template toAdd<double>();
result = result.sumAbstract({state.first});
EXPECT_NEAR(0, result.getValue(), storm::settings::getModule<storm::settings::modules::NativeEquationSolverSettings>().getPrecision());
x = manager->getAddZero<double>();
result = solver->solveGame(storm::OptimizationDirection::Minimize, storm::OptimizationDirection::Maximize, x, b);
result = solver->solveGame(storm::OptimizationDirection::Minimize, storm::OptimizationDirection::Maximize, x, b, manager->getBddZero(), manager->getBddZero());
result *= manager->getEncoding(state.first, 1).template toAdd<double>();
result = result.sumAbstract({state.first});
EXPECT_NEAR(0.5, result.getValue(), storm::settings::getModule<storm::settings::modules::NativeEquationSolverSettings>().getPrecision());
x = manager->getAddZero<double>();
result = solver->solveGame(storm::OptimizationDirection::Maximize, storm::OptimizationDirection::Minimize, x, b);
result = solver->solveGame(storm::OptimizationDirection::Maximize, storm::OptimizationDirection::Minimize, x, b, manager->getBddZero(), manager->getBddZero());
result *= manager->getEncoding(state.first, 1).template toAdd<double>();
result = result.sumAbstract({state.first});
EXPECT_NEAR(0.2, result.getValue(), storm::settings::getModule<storm::settings::modules::NativeEquationSolverSettings>().getPrecision());
x = manager->getAddZero<double>();
result = solver->solveGame(storm::OptimizationDirection::Maximize, storm::OptimizationDirection::Maximize, x, b);
result = solver->solveGame(storm::OptimizationDirection::Maximize, storm::OptimizationDirection::Maximize, x, b, manager->getBddZero(), manager->getBddZero());
result *= manager->getEncoding(state.first, 1).template toAdd<double>();
result = result.sumAbstract({state.first});
EXPECT_NEAR(0.99999892625817599, result.getValue(), storm::settings::getModule<storm::settings::modules::NativeEquationSolverSettings>().getPrecision());
@ -114,25 +114,25 @@ TEST(FullySymbolicGameSolverTest, Solve_Sylvan) {
storm::dd::Add<storm::dd::DdType::Sylvan, double> b = manager->getEncoding(state.first, 2).template toAdd<double>() + manager->getEncoding(state.first, 4).template toAdd<double>();
// Now solve the game with different strategies for the players.
storm::dd::Add<storm::dd::DdType::Sylvan> result = solver->solveGame(storm::OptimizationDirection::Minimize, storm::OptimizationDirection::Minimize, x, b);
storm::dd::Add<storm::dd::DdType::Sylvan> result = solver->solveGame(storm::OptimizationDirection::Minimize, storm::OptimizationDirection::Minimize, x, b, manager->getBddZero(), manager->getBddZero());
result *= manager->getEncoding(state.first, 1).template toAdd<double>();
result = result.sumAbstract({state.first});
EXPECT_NEAR(0, result.getValue(), storm::settings::getModule<storm::settings::modules::NativeEquationSolverSettings>().getPrecision());
x = manager->getAddZero<double>();
result = solver->solveGame(storm::OptimizationDirection::Minimize, storm::OptimizationDirection::Maximize, x, b);
result = solver->solveGame(storm::OptimizationDirection::Minimize, storm::OptimizationDirection::Maximize, x, b, manager->getBddZero(), manager->getBddZero());
result *= manager->getEncoding(state.first, 1).template toAdd<double>();
result = result.sumAbstract({state.first});
EXPECT_NEAR(0.5, result.getValue(), storm::settings::getModule<storm::settings::modules::NativeEquationSolverSettings>().getPrecision());
x = manager->getAddZero<double>();
result = solver->solveGame(storm::OptimizationDirection::Maximize, storm::OptimizationDirection::Minimize, x, b);
result = solver->solveGame(storm::OptimizationDirection::Maximize, storm::OptimizationDirection::Minimize, x, b, manager->getBddZero(), manager->getBddZero());
result *= manager->getEncoding(state.first, 1).template toAdd<double>();
result = result.sumAbstract({state.first});
EXPECT_NEAR(0.2, result.getValue(), storm::settings::getModule<storm::settings::modules::NativeEquationSolverSettings>().getPrecision());
x = manager->getAddZero<double>();
result = solver->solveGame(storm::OptimizationDirection::Maximize, storm::OptimizationDirection::Maximize, x, b);
result = solver->solveGame(storm::OptimizationDirection::Maximize, storm::OptimizationDirection::Maximize, x, b, manager->getBddZero(), manager->getBddZero());
result *= manager->getEncoding(state.first, 1).template toAdd<double>();
result = result.sumAbstract({state.first});
EXPECT_NEAR(0.99999892625817599, result.getValue(), storm::settings::getModule<storm::settings::modules::NativeEquationSolverSettings>().getPrecision());
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