public IModel Encode()
{
//get variable info from ModulesFile
varList = new VariableList(modules);
//Collect all sync label of all modules
synchs = modules.GetAllSynchs().ToList();
AddVars();
//Create Expression Encoder, use the same copy of varList, variableEncoding
expressionEncoder = new ExpressionToBDD(varList, variableEncoding);
EncodeSystemDef(modules.systemDef);
// get rid of any nondet dd variables not needed
if (modules.modelType == ModelType.MDP)
{
CUDDNode tmp = CUDD.GetSupport(trans);
tmp = CUDD.Abstract.ThereExists(tmp, allRowVars);
tmp = CUDD.Abstract.ThereExists(tmp, allColVars);
CUDDVars ddv = new CUDDVars();
while (!tmp.Equals(CUDD.ONE))
{
ddv.AddVar(CUDD.Var(tmp.GetIndex()));
tmp = tmp.GetThen();
}
CUDD.Deref(tmp);
allNondetVars.Deref();
allNondetVars = ddv;
}
init = GetInitState();
//
CUDD.Deref(moduleRangeDDs, moduleIdentities, colVarRanges, syncVars, choiceVars);
CUDD.Deref(moduleRowVars, moduleColVars, rowVars, colVars, new List <CUDDVars>()
{
globalRowVars, globalColVars, allSynchVars, allChoiceVars
});
IModel result;
if (modules.modelType == ModelType.DTMC)
{
//
allNondetVars.Deref();
result = new ProbModel(trans, init, stateRewards, transRewards, allRowVars, allColVars, varList, allRowVarRanges,
varIdentities, variableEncoding);
}
else
{
result = new NonDetModel(trans, init, stateRewards, transRewards, allRowVars, allColVars, allNondetVars,
varList, allRowVarRanges, varIdentities, variableEncoding);
}
return(result);
}
public override void Close()
{
CUDD.Deref(nondetMask);
allNondetVars.Deref();
base.Close();
}
public virtual void Close()
{
allRowVars.Deref();
allColVars.Deref();
CUDD.Deref(allRowVarRanges, trans, start, trans01, reach);
CUDD.Deref(varIdentities, varEncodings, stateRewards, transRewards);
CUDD.CloseDownCUDD();
}
private void UpdateKnowledge(EventModel eventModel)
{
//Console.WriteLine("Enter update knowledge");
//CUDD.Ref(eventModel.KnowPrecondition);
//Console.WriteLine("After ref know precondition");
//CUDDNode knowledgeWithPre = CUDD.Function.And(Knowledge, eventModel.KnowPrecondition);
CUDD.Ref(eventModel.KnowPartialSsa);
//Console.WriteLine("After ref know partial ssa");
CUDDNode knowledgeWithPssa = CUDD.Function.And(Knowledge, eventModel.KnowPartialSsa);
//Console.WriteLine("After get knowledge with pre and partial ssa");
if (eventModel.KnowAffectedPredSet.Count != 0)
{
CUDDVars oldVars = new CUDDVars();
CUDDVars newVars = new CUDDVars();
foreach (var predicate in eventModel.KnowAffectedPredSet)
{
CUDDNode trueRestrictBy = CUDD.Var(predicate.PreviousCuddIndex);
CUDD.Ref(trueRestrictBy);
CUDD.Ref(knowledgeWithPssa);
CUDDNode trueNode = CUDD.Function.Restrict(knowledgeWithPssa, trueRestrictBy);
CUDDNode falseRestrictBy = CUDD.Function.Not(trueRestrictBy);
CUDDNode falseNode = CUDD.Function.Restrict(knowledgeWithPssa, falseRestrictBy);
knowledgeWithPssa = CUDD.Function.Or(trueNode, falseNode);
oldVars.AddVar(CUDD.Var(predicate.SuccessiveCuddIndex));
newVars.AddVar(CUDD.Var(predicate.PreviousCuddIndex));
}
Knowledge = CUDD.Variable.SwapVariables(knowledgeWithPssa, oldVars, newVars);
oldVars.Deref();
newVars.Deref();
}
else
{
Knowledge = knowledgeWithPssa;
}
//Console.WriteLine("Whether knowledge is equal to false: {0}", Knowledge.Equals(CUDD.ZERO));
//Console.WriteLine("Finish!");
}
private void UpdateBelief(CUDDNode partialSsa, HashSet <Predicate> affectedPredSet)
{
//CUDD.Ref(precondition);
//CUDDNode beliefWithPre = CUDD.Function.And(Belief, precondition);
CUDD.Ref(partialSsa);
CUDDNode beliefWithPssa = CUDD.Function.And(Belief, partialSsa);
if (affectedPredSet.Count != 0)
{
CUDDVars oldVars = new CUDDVars();
CUDDVars newVars = new CUDDVars();
foreach (var predicate in affectedPredSet)
{
CUDDNode trueRestrictBy = CUDD.Var(predicate.PreviousCuddIndex);
CUDD.Ref(trueRestrictBy);
CUDD.Ref(beliefWithPssa);
CUDDNode trueNode = CUDD.Function.Restrict(beliefWithPssa, trueRestrictBy);
CUDDNode falseRestrictBy = CUDD.Function.Not(trueRestrictBy);
CUDDNode falseNode = CUDD.Function.Restrict(beliefWithPssa, falseRestrictBy);
beliefWithPssa = CUDD.Function.Or(trueNode, falseNode);
oldVars.AddVar(CUDD.Var(predicate.SuccessiveCuddIndex));
newVars.AddVar(CUDD.Var(predicate.PreviousCuddIndex));
}
Belief = CUDD.Variable.SwapVariables(beliefWithPssa, oldVars, newVars);
oldVars.Deref();
newVars.Deref();
}
else
{
Belief = beliefWithPssa;
}
//Console.WriteLine("Whether belief is equal to false: {0}", Belief.Equals(CUDD.ZERO));
//Console.WriteLine("Finish!");
}