/// <summary>
/// Initializes a new instance.
/// </summary>
/// <param name="runtimeModelCreator">A factory function that creates the model instance that should be executed.</param>
/// <param name="configuration">The analysis configuration that should be used.</param>
/// The number of bytes that should be reserved at the beginning of each state vector for the model checker tool.
/// </param>
internal LtmdpExecutedModel(CoupledExecutableModelCreator <TExecutableModel> runtimeModelCreator, AnalysisConfiguration configuration)
: base(runtimeModelCreator, 0, configuration)
{
var formulas = RuntimeModel.Formulas.Select(formula => FormulaCompilationVisitor <TExecutableModel> .Compile(RuntimeModel, formula)).ToArray();
_stepGraph = new LtmdpStepGraph();
_cachedLabeledStates = new LtmdpCachedLabeledStates <TExecutableModel>(TemporaryStateStorage, configuration.SuccessorCapacity, _stepGraph, formulas);
bool useForwardOptimization;
switch (configuration.MomentOfIndependentFaultActivation)
{
case MomentOfIndependentFaultActivation.AtStepBeginning:
case MomentOfIndependentFaultActivation.OnFirstMethodWithoutUndo:
useForwardOptimization = false;
break;
case MomentOfIndependentFaultActivation.OnFirstMethodWithUndo:
useForwardOptimization = true;
break;
default:
throw new ArgumentOutOfRangeException();
}
_ltmdpChoiceResolver = new LtmdpChoiceResolver(_stepGraph, useForwardOptimization);
ChoiceResolver = _ltmdpChoiceResolver;
RuntimeModel.SetChoiceResolver(ChoiceResolver);
_allowFaultsOnInitialTransitions = configuration.AllowFaultsOnInitialTransitions;
_activateIndependentFaultsAtStepBeginning =
configuration.MomentOfIndependentFaultActivation == MomentOfIndependentFaultActivation.AtStepBeginning;
}
private void CheckIfStepGraphCanBeProcessed(LtmdpStepGraph stepGraph)
{
// Need to reserve the memory for the transitions
var upperBoundaryForStepGraph = _ltmdp._continuationGraphElementCount + stepGraph.Size;
if (upperBoundaryForStepGraph < 0 || upperBoundaryForStepGraph >= _ltmdp._maxNumberOfContinuationGraphElements)
{
throw new OutOfMemoryException("Unable to store transitions. Try increasing the transition capacity.");
}
}
/// <summary>
/// Initializes a new instance.
/// </summary>
/// <param name="runtimeModelCreator">A factory function that creates the model instance that should be executed.</param>
/// <param name="successorStateCapacity">The maximum number of successor states supported per state.</param>
/// <param name="stateHeaderBytes">
/// The number of bytes that should be reserved at the beginning of each state vector for the model checker tool.
/// </param>
internal LtmdpExecutedModel(CoupledExecutableModelCreator <TExecutableModel> runtimeModelCreator, int stateHeaderBytes, long successorStateCapacity)
: base(runtimeModelCreator, stateHeaderBytes)
{
var formulas = RuntimeModel.Formulas.Select(formula => FormulaCompilationVisitor <TExecutableModel> .Compile(RuntimeModel, formula)).ToArray();
_stepGraph = new LtmdpStepGraph();
_cachedLabeledStates = new LtmdpCachedLabeledStates <TExecutableModel>(RuntimeModel, successorStateCapacity, _stepGraph, formulas);
_ltmdpChoiceResolver = new LtmdpChoiceResolver(_stepGraph);
ChoiceResolver = _ltmdpChoiceResolver;
RuntimeModel.SetChoiceResolver(ChoiceResolver);
}
private void AddStepGraph(LtmdpStepGraph stepGraph, int sourceState, bool areInitialTransitions)
{
_stepGraphMapper.Clear();
var place = _ltmdp.GetPlaceForNewContinuationGraphElements(1);
if (areInitialTransitions)
{
_ltmdp._indexOfInitialContinuationGraphRoot = place;
}
else
{
_ltmdp.SourceStates.Add(sourceState);
_ltmdp._stateStorageStateToRootOfContinuationGraphMemory[sourceState] = place;
}
AddChoiceOfStepGraph(stepGraph, 0, place);
}
/// <summary>
/// Initializes a new instance.
/// </summary>
/// <param name="temporalStateStorage">A storage where temporal states can be saved to.</param>
/// <param name="capacity">The maximum number of successors that can be cached.</param>
/// <param name="formulas">The formulas that should be checked for all successor states.</param>
public LtmdpCachedLabeledStates(TemporaryStateStorage temporalStateStorage, long capacity, LtmdpStepGraph ltmdpStepGraph, params Func <bool>[] formulas)
{
Requires.NotNull(temporalStateStorage, nameof(temporalStateStorage));
Requires.NotNull(formulas, nameof(formulas));
Requires.That(formulas.Length < 32, "At most 32 formulas are supported.");
Requires.That(capacity <= (1 << 30), nameof(capacity), $"Maximum supported capacity is {1 << 30}.");
_temporalStateStorage = temporalStateStorage;
_formulas = formulas;
_capacity = capacity;
LtmdpStepGraph = ltmdpStepGraph;
_transitionsWithContinuationIdBuffer.Resize(capacity * sizeof(LtmdpTransition), zeroMemory: false);
_transitionsWithContinuationIdMemory = (LtmdpTransition *)_transitionsWithContinuationIdBuffer.Pointer;
}
private void AddChoiceOfStepGraph(LtmdpStepGraph stepGraph, int continuationId, long locationForContinuationGraphElement)
{
BufferCidMapping(continuationId, locationForContinuationGraphElement);
var choice = stepGraph.GetChoiceOfCid(continuationId);
if (choice.IsChoiceTypeUnsplitOrFinal)
{
AddFinalChoiceOfStepGraph(choice.To, locationForContinuationGraphElement, choice.Probability);
return;
}
if (choice.IsChoiceTypeForward)
{
// no recursive descent here
var bufferedTargetCid = GetBufferedLtmdpCid(choice.To);
_ltmdp._continuationGraph[locationForContinuationGraphElement] =
new ContinuationGraphElement
{
ChoiceType = choice.ChoiceType,
From = bufferedTargetCid,
To = bufferedTargetCid,
Probability = choice.Probability
};
return;
}
var offsetTo = choice.To - choice.From;
var numberOfChildren = offsetTo + 1;
var placesForChildren = _ltmdp.GetPlaceForNewContinuationGraphElements(numberOfChildren);
_ltmdp._continuationGraph[locationForContinuationGraphElement] =
new ContinuationGraphElement
{
ChoiceType = choice.ChoiceType,
From = placesForChildren,
To = placesForChildren + offsetTo,
Probability = choice.Probability
};
for (var currentChildNo = 0; currentChildNo < numberOfChildren; currentChildNo++)
{
var originalContinuationId = choice.From + currentChildNo;
var newLocation = placesForChildren + currentChildNo;
AddChoiceOfStepGraph(stepGraph, originalContinuationId, newLocation);
}
}
/// <summary>
/// Initializes a new instance.
/// </summary>
/// <param name="runtimeModelCreator">A factory function that creates the model instance that should be executed.</param>
/// <param name="configuration">The analysis configuration that should be used.</param>
/// The number of bytes that should be reserved at the beginning of each state vector for the model checker tool.
/// </param>
internal LtmdpExecutedModel(CoupledExecutableModelCreator <TExecutableModel> runtimeModelCreator, AnalysisConfiguration configuration)
: base(runtimeModelCreator, 0, configuration)
{
var formulas = RuntimeModel.Formulas.Select(formula => FormulaCompilationVisitor <TExecutableModel> .Compile(RuntimeModel, formula)).ToArray();
_stepGraph = new LtmdpStepGraph();
_cachedLabeledStates = new LtmdpCachedLabeledStates <TExecutableModel>(TemporaryStateStorage, configuration.SuccessorCapacity, _stepGraph, formulas);
var useForwardOptimization = configuration.EnableStaticPruningOptimization;
_ltmdpChoiceResolver = new LtmdpChoiceResolver(_stepGraph, useForwardOptimization);
ChoiceResolver = _ltmdpChoiceResolver;
RuntimeModel.SetChoiceResolver(ChoiceResolver);
_allowFaultsOnInitialTransitions = configuration.AllowFaultsOnInitialTransitions;
}
/// <summary>
/// Initializes a new instance.
/// </summary>
/// <param name="model">The model the successors are computed for.</param>
/// <param name="capacity">The maximum number of successors that can be cached.</param>
/// <param name="formulas">The formulas that should be checked for all successor states.</param>
public LtmdpCachedLabeledStates(ExecutableModel <TExecutableModel> model, long capacity, LtmdpStepGraph ltmdpStepGraph, params Func <bool>[] formulas)
{
Requires.NotNull(model, nameof(model));
Requires.NotNull(formulas, nameof(formulas));
Requires.That(formulas.Length < 32, "At most 32 formulas are supported.");
Requires.That(capacity <= (1 << 30), nameof(capacity), $"Maximum supported capacity is {1 << 30}.");
_stateVectorSize = model.StateVectorSize;
_formulas = formulas;
_capacity = capacity;
LtmdpStepGraph = ltmdpStepGraph;
_transitionsWithContinuationIdBuffer.Resize(capacity * sizeof(LtmdpTransition), zeroMemory: false);
_transitionsWithContinuationIdMemory = (LtmdpTransition *)_transitionsWithContinuationIdBuffer.Pointer;
_targetStateBuffer.Resize(capacity * model.StateVectorSize, zeroMemory: true);
_targetStateMemory = _targetStateBuffer.Pointer;
}
/// <summary>
/// Initializes a new instance.
/// </summary>
public LtmdpChoiceResolver(LtmdpStepGraph ltmdpStepGraph)
: base()
{
LtmdpStepGraph = ltmdpStepGraph;
}
/// <summary>
/// Initializes a new instance.
/// </summary>
/// <param name="useForwardOptimization">Use Forward Optimization.</param>
public LtmdpChoiceResolver(LtmdpStepGraph ltmdpStepGraph, bool useForwardOptimization)
: base(useForwardOptimization)
{
LtmdpStepGraph = ltmdpStepGraph;
}
public DirectChildrenEnumerator(LtmdpStepGraph ltmdpStepGraph, int parentContinuationId)
{
Choice = ltmdpStepGraph.GetChoiceOfCid(parentContinuationId);
CurrentChildContinuationId = Choice.From - 1;
ParentContinuationId = parentContinuationId;
}
