public void CalculateMdpFlattened()
{
var model = new DegradedModeModel();
model.System.SignalDetector1.F1.ProbabilityOfOccurrence = null;
var createModel = SafetySharpRuntimeModel.CreateExecutedModelFromFormulasCreator(model);
var markovChainGenerator = new MarkovDecisionProcessFromExecutableModelGenerator <SafetySharpRuntimeModel>(createModel)
{
Configuration = SafetySharpModelChecker.TraversalConfiguration
};
markovChainGenerator.Configuration.SuccessorCapacity *= 2;
markovChainGenerator.Configuration.EnableStaticPruningOptimization = false;
markovChainGenerator.Configuration.LtmdpModelChecker = LtmdpModelChecker.BuildInMdpWithNewStates;
markovChainGenerator.AddFormulaToCheck(model.System.HazardActive);
foreach (var fault in model.Faults)
{
var faultFormula = new FaultFormula(fault);
markovChainGenerator.AddFormulaToCheck(faultFormula);
}
markovChainGenerator.Configuration.UseCompactStateStorage = true;
markovChainGenerator.Configuration.EnableEarlyTermination = false;
var nmdp = markovChainGenerator.GenerateNestedMarkovDecisionProcess();
var nmdpToMpd = new NmdpToMdpByFlattening(nmdp);
}
public void CreateMarkovChainWithHazardsRetraversal2()
{
var model = new DegradedModeModel();
var createModel = SafetySharpRuntimeModel.CreateExecutedModelFromFormulasCreator(model);
var markovChainGenerator = new MarkovChainFromExecutableModelGenerator <SafetySharpRuntimeModel>(createModel)
{
Configuration = SafetySharpModelChecker.TraversalConfiguration
};
markovChainGenerator.Configuration.SuccessorCapacity *= 2;
markovChainGenerator.AddFormulaToCheck(model.System.HazardActive);
markovChainGenerator.Configuration.UseCompactStateStorage = true;
markovChainGenerator.Configuration.UseAtomarPropositionsAsStateLabels = false;
var markovChain = markovChainGenerator.GenerateLabeledMarkovChain();
var retraversalMarkovChainGenerator = new MarkovChainFromMarkovChainGenerator(markovChain);
retraversalMarkovChainGenerator.Configuration.SuccessorCapacity *= 2;
retraversalMarkovChainGenerator.AddFormulaToCheck(model.System.HazardActive);
retraversalMarkovChainGenerator.Configuration.UseCompactStateStorage = true;
retraversalMarkovChainGenerator.Configuration.UseAtomarPropositionsAsStateLabels = false;
retraversalMarkovChainGenerator.GenerateLabeledMarkovChain();
}
public void CalculateHazardSingleCoreAllFaultsWithOnce()
{
var model = new DegradedModeModel();
var createModel = SafetySharpRuntimeModel.CreateExecutedModelFromFormulasCreator(model);
var markovChainGenerator = new MarkovChainFromExecutableModelGenerator <SafetySharpRuntimeModel>(createModel)
{
Configuration = SafetySharpModelChecker.TraversalConfiguration
};
markovChainGenerator.Configuration.SuccessorCapacity *= 2;
markovChainGenerator.Configuration.CpuCount = 1;
markovChainGenerator.Configuration.EnableStaticPruningOptimization = false;
var formula = new ExecutableStateFormula(() => model.System.HazardActive);
var onceFormula = new UnaryFormula(formula, UnaryOperator.Once);
var onceFault1 = new UnaryFormula(new FaultFormula(model.System.SignalDetector1.F1), UnaryOperator.Once);
markovChainGenerator.AddFormulaToCheck(onceFault1);
var formulaToCheck = new BoundedUnaryFormula(new BinaryFormula(onceFault1, BinaryOperator.And, onceFormula), UnaryOperator.Finally, 50);
markovChainGenerator.AddFormulaToCheck(formulaToCheck);
markovChainGenerator.Configuration.UseCompactStateStorage = true;
markovChainGenerator.Configuration.EnableEarlyTermination = false;
markovChainGenerator.Configuration.CpuCount = Int32.MaxValue;
var markovChain = markovChainGenerator.GenerateLabeledMarkovChain();
using (var modelChecker = new ConfigurationDependentLtmcModelChecker(markovChainGenerator.Configuration, markovChain, markovChainGenerator.Configuration.DefaultTraceOutput))
{
var result = modelChecker.CalculateProbability(formulaToCheck);
Console.Write($"Probability of hazard: {result}");
}
}
public void CalculateHazardProbability()
{
var model = new DegradedModeModel();
var result = SafetySharpModelChecker.CalculateProbabilityToReachStateBounded(model, model.System.HazardActive, 50);
Console.Write($"Probability of hazard: {result}");
}
public void CalculateHazardProbabilityWhenF1NeverOccurs()
{
var model = new DegradedModeModel();
model.System.SignalDetector1.F1.ProbabilityOfOccurrence = new Probability(0.0);
var result = SafetySharpModelChecker.CalculateProbabilityToReachStateBounded(model, model.System.HazardActive, 50);
Console.Write($"Probability of hazard: {result}");
}
public void CalculateHazardWithoutEarlyTermination()
{
var model = new DegradedModeModel();
SafetySharpModelChecker.TraversalConfiguration.EnableEarlyTermination = false;
var result = SafetySharpModelChecker.CalculateProbabilityToReachStateBounded(model, model.System.HazardActive, 50);
SafetySharpModelChecker.TraversalConfiguration.EnableEarlyTermination = true;
Console.Write($"Probability of hazard: {result}");
}
public void CalculateRangeHazardLtmdp()
{
var model = new DegradedModeModel();
model.System.SignalDetector1.F1.ProbabilityOfOccurrence = null;
SafetySharpModelChecker.TraversalConfiguration.EnableStaticPruningOptimization = true;
var result = SafetySharpModelChecker.CalculateProbabilityRangeToReachStateBounded(model, model.System.HazardActive, 50);
Console.Write($"Probability of hazard: {result}");
}
public void CalculateHazardProbability()
{
var tc = SafetySharpModelChecker.TraversalConfiguration;
tc.WriteGraphvizModels = true;
tc.EnableStaticPruningOptimization = false;
SafetySharpModelChecker.TraversalConfiguration = tc;
var model = new DegradedModeModel();
var result = SafetySharpModelChecker.CalculateProbabilityToReachStateBounded(model, model.System.HazardActive, 50);
Console.WriteLine($"Probability of hazard in model: {result}");
}
public void CalculateHazardSingleCore()
{
var model = new DegradedModeModel();
SafetySharpModelChecker.TraversalConfiguration.CpuCount = 1;
SafetySharpModelChecker.TraversalConfiguration.EnableEarlyTermination = false;
SafetySharpModelChecker.TraversalConfiguration.EnableStaticPruningOptimization = false;
var result = SafetySharpModelChecker.CalculateProbabilityToReachStateBounded(model, model.System.HazardActive, 50);
SafetySharpModelChecker.TraversalConfiguration.CpuCount = Int32.MaxValue;
SafetySharpModelChecker.TraversalConfiguration.EnableEarlyTermination = true;
SafetySharpModelChecker.TraversalConfiguration.EnableStaticPruningOptimization = true;
Console.Write($"Probability of hazard: {result}");
}
public void CalculateDcca()
{
var model = new DegradedModeModel();
var analysis = new SafetySharpSafetyAnalysis {
Backend = SafetyAnalysisBackend.FaultOptimizedOnTheFly, Heuristics = { new MaximalSafeSetHeuristic(model.Faults) }
};
var result = analysis.ComputeMinimalCriticalSets(model, model.System.HazardActive);
//result.SaveCounterExamples("counter examples/height control/dcca/collision/original");
var orderResult = SafetySharpOrderAnalysis.ComputeOrderRelationships(result);
Console.WriteLine(orderResult);
}
public void CalculateHazardProbabilityGraph()
{
var model = new DegradedModeModel();
var minValue = 0.0;
var maxValue = 1.0;
var steps = 250;
var stepSize = (maxValue - minValue) / (steps - 1);
var sourceValues = new double[steps];
var resultValues = new double[steps];
for (var i = 0; i < steps; i++)
{
var currentValue = i * stepSize;
sourceValues[i] = currentValue;
model.System.SignalDetector1.F1.ProbabilityOfOccurrence = new Probability(currentValue);
var currentResult = SafetySharpModelChecker.CalculateProbabilityToReachStateBounded(model, model.System.HazardActive, 50);
GC.Collect();
resultValues[i] = currentResult.Value;
}
var fileWriter = new StreamWriter("PrecisenessTradeoff/graph.csv", append: false);
var csvWriter = new CsvWriter(fileWriter);
csvWriter.AddEntry("Step");
for (var i = 0; i < steps; i++)
{
csvWriter.AddEntry(i);
}
csvWriter.NewLine();
csvWriter.AddEntry("Pr(F1)");
for (var i = 0; i < steps; i++)
{
csvWriter.AddEntry(sourceValues[i]);
}
csvWriter.NewLine();
csvWriter.AddEntry("Pr(Hazard)");
for (var i = 0; i < steps; i++)
{
csvWriter.AddEntry(resultValues[i]);
}
csvWriter.NewLine();
fileWriter.Close();
}
public void CreateMarkovChainWithHazards()
{
var model = new DegradedModeModel();
var createModel = SafetySharpRuntimeModel.CreateExecutedModelFromFormulasCreator(model);
var markovChainGenerator = new MarkovChainFromExecutableModelGenerator <SafetySharpRuntimeModel>(createModel)
{
Configuration = SafetySharpModelChecker.TraversalConfiguration
};
markovChainGenerator.Configuration.SuccessorCapacity *= 2;
markovChainGenerator.AddFormulaToCheck(model.System.HazardActive);
markovChainGenerator.Configuration.UseCompactStateStorage = true;
markovChainGenerator.Configuration.EnableEarlyTermination = false;
var markovChain = markovChainGenerator.GenerateMarkovChain();
}
public void CalculateLtmdpWithoutFaultsWithPruning()
{
var model = new DegradedModeModel();
model.System.SignalDetector1.F1.ProbabilityOfOccurrence = null;
var createModel = SafetySharpRuntimeModel.CreateExecutedModelFromFormulasCreator(model);
var markovChainGenerator = new MarkovDecisionProcessFromExecutableModelGenerator <SafetySharpRuntimeModel>(createModel)
{
Configuration = SafetySharpModelChecker.TraversalConfiguration
};
markovChainGenerator.Configuration.SuccessorCapacity *= 2;
markovChainGenerator.Configuration.EnableStaticPruningOptimization = true;
markovChainGenerator.Configuration.LtmdpModelChecker = LtmdpModelChecker.BuiltInLtmdp;
markovChainGenerator.AddFormulaToCheck(model.System.HazardActive);
markovChainGenerator.Configuration.UseCompactStateStorage = true;
markovChainGenerator.Configuration.EnableEarlyTermination = false;
var markovChain = markovChainGenerator.GenerateLabeledTransitionMarkovDecisionProcess();
}
public void CreateFaultAwareMarkovChainAllFaults()
{
var model = new DegradedModeModel();
var createModel = SafetySharpRuntimeModel.CreateExecutedModelFromFormulasCreator(model);
var markovChainGenerator = new MarkovChainFromExecutableModelGenerator <SafetySharpRuntimeModel>(createModel)
{
Configuration = SafetySharpModelChecker.TraversalConfiguration
};
markovChainGenerator.Configuration.SuccessorCapacity *= 2;
markovChainGenerator.Configuration.EnableStaticPruningOptimization = false;
markovChainGenerator.AddFormulaToCheck(model.System.HazardActive);
foreach (var fault in model.Faults)
{
var faultFormula = new FaultFormula(fault);
markovChainGenerator.AddFormulaToCheck(faultFormula);
}
markovChainGenerator.Configuration.UseCompactStateStorage = true;
markovChainGenerator.Configuration.EnableEarlyTermination = false;
var markovChain = markovChainGenerator.GenerateMarkovChain();
}
public void CalculateLtmdpWithoutStaticPruningSingleCore()
{
var model = new DegradedModeModel();
model.System.SignalDetector1.F1.ProbabilityOfOccurrence = null;
var createModel = SafetySharpRuntimeModel.CreateExecutedModelFromFormulasCreator(model);
var markovChainGenerator = new MarkovDecisionProcessFromExecutableModelGenerator <SafetySharpRuntimeModel>(createModel)
{
Configuration = SafetySharpModelChecker.TraversalConfiguration
};
markovChainGenerator.Configuration.SuccessorCapacity *= 2;
markovChainGenerator.Configuration.EnableStaticPruningOptimization = false;
markovChainGenerator.Configuration.LtmdpModelChecker = LtmdpModelChecker.BuiltInLtmdp;
var formula = new ExecutableStateFormula(() => model.System.HazardActive);
var formulaToCheck = new BoundedUnaryFormula(formula, UnaryOperator.Finally, 50);
markovChainGenerator.AddFormulaToCheck(formulaToCheck);
foreach (var fault in model.Faults)
{
var faultFormula = new FaultFormula(fault);
markovChainGenerator.AddFormulaToCheck(faultFormula);
}
markovChainGenerator.Configuration.UseCompactStateStorage = true;
markovChainGenerator.Configuration.CpuCount = 1;
markovChainGenerator.Configuration.EnableEarlyTermination = false;
var markovChain = markovChainGenerator.GenerateLabeledTransitionMarkovDecisionProcess();
using (var modelChecker = new ConfigurationDependentLtmdpModelChecker(markovChainGenerator.Configuration, markovChain, markovChainGenerator.Configuration.DefaultTraceOutput))
{
var result = modelChecker.CalculateProbabilityRange(formulaToCheck);
Console.Write($"Probability of hazard: {result}");
}
}
