internal PathTranslation(TransitionRelationComputation transitionRelationComputer,
List <Cmd> cmds)
{
this.cmds = cmds;
this.transitionRelationComputer = transitionRelationComputer;
this.frame = transitionRelationComputer.frame;
this.first = transitionRelationComputer.first;
this.second = transitionRelationComputer.second;
allInParams = new HashSet <Variable>(first.InParams);
allOutParams = new HashSet <Variable>(first.OutParams);
allLocVars = new HashSet <Variable>(first.LocVars);
frameIntermediateCopy = new Dictionary <Variable, Variable>();
if (IsJoint())
{
allInParams.UnionWith(second.InParams);
allOutParams.UnionWith(second.OutParams);
allLocVars.UnionWith(second.LocVars);
}
SetupVarCopies();
IntroduceIntermediateVars();
EliminateIntermediateVariables();
if (IsJoint())
{
EliminateWithIntermediateState();
}
ComputeTransitionRelationExpr();
}
private TransitionRelationComputation(
AtomicActionCopyAdapter first, AtomicActionCopyAdapter second,
IEnumerable <Variable> frame, List <WitnessFunction> witnesses, bool ignorePostState,
string messagePrefix)
{
this.first = first;
this.second = second;
this.frame = new HashSet <Variable>(frame);
this.ignorePostState = ignorePostState;
this.messagePrefix = messagePrefix;
this.checkingContext = new CheckingContext(null);
this.pathTranslations = new List <Expr>();
this.globalVarToWitnesses = new Dictionary <GlobalVariable, List <WitnessFunction> >();
if (witnesses != null)
{
foreach (var witness in witnesses)
{
var gVar = witness.globalVar;
if (!globalVarToWitnesses.ContainsKey(gVar))
{
globalVarToWitnesses[gVar] = new List <WitnessFunction>();
}
globalVarToWitnesses[gVar].Add(witness);
}
}
}
private static Expr ComputeTransitionRelation(
AtomicActionCopyAdapter first, AtomicActionCopyAdapter second,
IEnumerable <Variable> frame, List <WitnessFunction> witnesses, bool ignorePostState,
string messagePrefix)
{
var trc = new TransitionRelationComputation(first, second, frame, witnesses, ignorePostState, messagePrefix);
trc.EnumeratePaths();
var transitionRelation = Expr.Or(trc.pathTranslations);
ResolutionContext rc = new ResolutionContext(null)
{
StateMode = ResolutionContext.State.Two
};
transitionRelation.Resolve(rc);
transitionRelation.Typecheck(new TypecheckingContext(null));
return(transitionRelation);
}
