/// <summary>
/// Show all transitions from the given node and from the nodes that are reached from
/// the given node etc., until the maximum nr of transitions is reached
/// </summary>
internal void ShowReachable(Node node)
{
int transCnt = (firstExploration ? (initTransitions < 0 ? maxTransitions : initTransitions) : maxTransitions);
firstExploration = false;
if (excludeIsomorphicStates)
{
Set<IState> frontier = new Set<IState>(stateMap[node]);
StateContainer<IState> visited = new StateContainer<IState>(this.modelProgram, stateMap[node]);
while (!frontier.IsEmpty && this.transitions.Count < transCnt)
{
IState sourceIState = frontier.Choose(0);
Node sourceNode = nodeMap[sourceIState];
frontier = frontier.Remove(sourceIState);
foreach (Symbol aSymbol in this.modelProgram.PotentiallyEnabledActionSymbols(sourceIState))
{
foreach (CompoundTerm action in this.modelProgram.GetActions(sourceIState, aSymbol))
{
Node targetNode;
if (TryGetTargetNode(sourceNode, action, out targetNode))
{
IState targetIState = stateMap[targetNode];
IState isomorphicState;
Transition t;
if (!visited.HasIsomorphic(targetIState, out isomorphicState))
{
frontier = frontier.Add(targetIState);
//visited = visited.Add(targetIState);
visited.Add(targetIState);
t = new Triple<Term, CompoundTerm, Term>(sourceNode, action, targetNode);
}
else
{
if (collapseExcludedIsomorphicStates)
t = new Triple<Term, CompoundTerm, Term>(sourceNode, action, nodeMap[isomorphicState]);
else
{
Term isoNode = nodeMap[isomorphicState];
t = new Triple<Term, CompoundTerm, Term>(sourceNode, action, targetNode);
if (!targetNode.Equals(sourceNode) && !targetNode.Equals(isoNode))
groupingTransitions = groupingTransitions.Add(new Triple<Term, CompoundTerm, Term>(targetNode, new CompoundTerm(new Symbol("IsomorphicTo"), new Sequence<Term>()), isoNode));
}
}
this.transitions = this.transitions.Add(t);
this.hiddenTransitions = this.hiddenTransitions.Remove(t);
}
}
}
}
//Console.WriteLine(dashedTransitions.ToString());
//Console.WriteLine(visited.ToString());
}
else
{
Set<Node> frontier = new Set<Node>(node);
Set<Node> visited = frontier;
while (!frontier.IsEmpty && this.transitions.Count < transCnt)
{
Node sourceNode = frontier.Choose(0);
frontier = frontier.Remove(sourceNode);
foreach (Symbol aSymbol in this.modelProgram.PotentiallyEnabledActionSymbols(stateMap[sourceNode]))
{
foreach (CompoundTerm action in this.modelProgram.GetActions(stateMap[sourceNode], aSymbol))
{
Node targetNode;
if (TryGetTargetNode(sourceNode, action, out targetNode))
{
if (!visited.Contains(targetNode))
{
frontier = frontier.Add(targetNode);
visited = visited.Add(targetNode);
}
Transition t = new Triple<Term, CompoundTerm, Term>(sourceNode, action, targetNode);
this.transitions = this.transitions.Add(t);
this.hiddenTransitions = this.hiddenTransitions.Remove(t);
}
}
}
}
}
}
/// <summary>
/// Show all transitions from the given node and from the nodes that are reached from
/// the given node etc., until the maximum nr of transitions is reached
/// </summary>
internal void ShowReachable(Node node)
{
int transCnt = (firstExploration ? (initTransitions < 0 ? maxTransitions : initTransitions) : maxTransitions);
firstExploration = false;
if (excludeIsomorphicStates)
{
Set <IState> frontier = new Set <IState>(stateMap[node]);
StateContainer <IState> visited = new StateContainer <IState>(this.modelProgram, stateMap[node]);
while (!frontier.IsEmpty && this.transitions.Count < transCnt)
{
IState sourceIState = frontier.Choose(0);
Node sourceNode = nodeMap[sourceIState];
frontier = frontier.Remove(sourceIState);
foreach (Symbol aSymbol in this.modelProgram.PotentiallyEnabledActionSymbols(sourceIState))
{
foreach (CompoundTerm action in this.modelProgram.GetActions(sourceIState, aSymbol))
{
Node targetNode;
if (TryGetTargetNode(sourceNode, action, out targetNode))
{
IState targetIState = stateMap[targetNode];
IState isomorphicState;
Transition t;
if (!visited.HasIsomorphic(targetIState, out isomorphicState))
{
frontier = frontier.Add(targetIState);
//visited = visited.Add(targetIState);
visited.Add(targetIState);
t = new Triple <Term, CompoundTerm, Term>(sourceNode, action, targetNode);
}
else
{
if (collapseExcludedIsomorphicStates)
{
t = new Triple <Term, CompoundTerm, Term>(sourceNode, action, nodeMap[isomorphicState]);
}
else
{
Term isoNode = nodeMap[isomorphicState];
t = new Triple <Term, CompoundTerm, Term>(sourceNode, action, targetNode);
if (!targetNode.Equals(sourceNode) && !targetNode.Equals(isoNode))
{
groupingTransitions = groupingTransitions.Add(new Triple <Term, CompoundTerm, Term>(targetNode, new CompoundTerm(new Symbol("IsomorphicTo"), new Sequence <Term>()), isoNode));
}
}
}
this.transitions = this.transitions.Add(t);
this.hiddenTransitions = this.hiddenTransitions.Remove(t);
}
}
}
}
//Console.WriteLine(dashedTransitions.ToString());
//Console.WriteLine(visited.ToString());
}
else
{
Set <Node> frontier = new Set <Node>(node);
Set <Node> visited = frontier;
while (!frontier.IsEmpty && this.transitions.Count < transCnt)
{
Node sourceNode = frontier.Choose(0);
frontier = frontier.Remove(sourceNode);
foreach (Symbol aSymbol in this.modelProgram.PotentiallyEnabledActionSymbols(stateMap[sourceNode]))
{
foreach (CompoundTerm action in this.modelProgram.GetActions(stateMap[sourceNode], aSymbol))
{
Node targetNode;
if (TryGetTargetNode(sourceNode, action, out targetNode))
{
if (!visited.Contains(targetNode))
{
frontier = frontier.Add(targetNode);
visited = visited.Add(targetNode);
}
Transition t = new Triple <Term, CompoundTerm, Term>(sourceNode, action, targetNode);
this.transitions = this.transitions.Add(t);
this.hiddenTransitions = this.hiddenTransitions.Remove(t);
}
}
}
}
}
}
/// <summary>
/// Check if the term represented by goal is reachable. Empty string results in traversing the whole state space.
/// </summary>
/// <param name="goal">The goal term involving the model program name as outer function symbol.</param>
public ReachabilityResult CheckReachability(string goal)
{
uint transCnt = 0;
uint stateCount = 0;
//(firstExploration ? (initTransitions < 0 ? maxTransitions : initTransitions) : maxTransitions);
//firstExploration = false;
//excludeIsomorphicStates = false;
Set<CompoundTerm> goals = processGoal(modelProgram, goal);
Pair<Set<CompoundTerm>, Set<Term>> simpleAndFsmGoals = splitGoals(goals);
if (GoalsSatisfied(simpleAndFsmGoals, modelProgram.InitialState)) goto end;
if (excludeIsomorphicStates)
{
Set<IState> frontier = new Set<IState>(modelProgram.InitialState);
//stateCount++;
//Set<IState> visited = Set<IState>.EmptySet;
StateContainer<IState> visited = new StateContainer<IState>(this.modelProgram, modelProgram.InitialState);
stateCount++;
// need to add a check about the initial state.
Set<string> transitionPropertyNames = Set<string>.EmptySet;
TransitionProperties transitionProperties;
while (!frontier.IsEmpty)
{
IState sourceIState = frontier.Choose(0);
frontier = frontier.Remove(sourceIState);
foreach (Symbol aSymbol in this.modelProgram.PotentiallyEnabledActionSymbols(sourceIState))
{
foreach (CompoundTerm action in this.modelProgram.GetActions(sourceIState, aSymbol))
{
//Node targetNode = GetTargetNode(sourceNode, action);
IState targetIState = modelProgram.GetTargetState(sourceIState, action, transitionPropertyNames, out transitionProperties);
//if (this.modelProgram.IsAccepting(targetIState))
// this.acceptingNodes = this.acceptingNodes.Add(targetNode);
//if (!this.modelProgram.SatisfiesStateInvariant(targetState))
// this.errorNodes = this.errorNodes.Add(targetNode);
//IState isomorphicState;
//Transition t;
transCnt++;
IState isomorphicState;
if (!visited.HasIsomorphic(targetIState, out isomorphicState))
{
if (GoalsSatisfied(simpleAndFsmGoals, targetIState)) goto end;
frontier = frontier.Add(targetIState);
visited.Add(targetIState);
stateCount++;
//visited.Add(targetIState);
//t = new Triple<Term, CompoundTerm, Term>(sourceNode, action, targetNode);
}
//else
//{
// //if (collapseExcludedIsomorphicStates)
// // t = new Triple<Term, CompoundTerm, Term>(sourceNode, action, nodeMap[isomorphicState]);
// //else
// {
// Term isoNode = nodeMap[isomorphicState];
// t = new Triple<Term, CompoundTerm, Term>(sourceNode, action, targetNode);
// if (!targetNode.Equals(sourceNode) && !targetNode.Equals(isoNode))
// groupingTransitions = groupingTransitions.Add(new Triple<Term, CompoundTerm, Term>(targetNode, new CompoundTerm(new Symbol("IsomorphicTo"), new Sequence<Term>()), isoNode));
// }
//}
//this.transitions = this.transitions.Add(t);
//this.hiddenTransitions = this.hiddenTransitions.Remove(t);
}
}
}
//Set<IState> frontier = new Set<IState>(stateMap[node]);
//StateContainer<IState> visited = new StateContainer<IState>(this.modelProgram, stateMap[node]);
//while (!frontier.IsEmpty && this.transitions.Count < transCnt)
//{
// IState sourceIState = frontier.Choose(0);
// Node sourceNode = nodeMap[sourceIState];
// frontier = frontier.Remove(sourceIState);
// foreach (Symbol aSymbol in this.modelProgram.PotentiallyEnabledActionSymbols(sourceIState))
// {
// foreach (CompoundTerm action in this.modelProgram.GetActions(sourceIState, aSymbol))
// {
// Node targetNode = GetTargetNode(sourceNode, action);
// IState targetIState = stateMap[targetNode];
// IState isomorphicState;
// Transition t;
// if (!visited.HasIsomorphic(targetIState, out isomorphicState))
// {
// frontier = frontier.Add(targetIState);
// //visited = visited.Add(targetIState);
// visited.Add(targetIState);
// t = new Triple<Term, CompoundTerm, Term>(sourceNode, action, targetNode);
// }
// else
// {
// if (collapseExcludedIsomorphicStates)
// t = new Triple<Term, CompoundTerm, Term>(sourceNode, action, nodeMap[isomorphicState]);
// else
// {
// Term isoNode = nodeMap[isomorphicState];
// t = new Triple<Term, CompoundTerm, Term>(sourceNode, action, targetNode);
// if (!targetNode.Equals(sourceNode) && !targetNode.Equals(isoNode))
// groupingTransitions = groupingTransitions.Add(new Triple<Term, CompoundTerm, Term>(targetNode, new CompoundTerm(new Symbol("IsomorphicTo"), new Sequence<Term>()), isoNode));
// }
// }
// this.transitions = this.transitions.Add(t);
// this.hiddenTransitions = this.hiddenTransitions.Remove(t);
// }
// }
//}
////Console.WriteLine(dashedTransitions.ToString());
////Console.WriteLine(visited.ToString());
}
else
{
Set<IState> frontier = new Set<IState>(modelProgram.InitialState);
Console.Out.WriteLine(frontier.ToString());
Console.Out.WriteLine(modelProgram.ToString());
stateCount++;
// need to add a check about the initial state.
Set<IState> visited = new Set<IState>(modelProgram.InitialState);
Set<string> transitionPropertyNames = Set<string>.EmptySet;
TransitionProperties transitionProperties;
while (!frontier.IsEmpty)
{
IState sourceIState = frontier.Choose(0);
frontier = frontier.Remove(sourceIState);
foreach (Symbol aSymbol in this.modelProgram.PotentiallyEnabledActionSymbols(sourceIState))
{
foreach (CompoundTerm action in this.modelProgram.GetActions(sourceIState, aSymbol))
{
//Node targetNode = GetTargetNode(sourceNode, action);
IState targetIState = modelProgram.GetTargetState(sourceIState, action, transitionPropertyNames, out transitionProperties);
//Console.WriteLine(sourceIState.ToString());
//Console.WriteLine ("--- " + action + " --->");
//Console.WriteLine (targetIState.ToString());
//Console.WriteLine();
//Console.WriteLine();
//if (this.modelProgram.IsAccepting(targetIState))
// this.acceptingNodes = this.acceptingNodes.Add(targetNode);
//if (!this.modelProgram.SatisfiesStateInvariant(targetState))
// this.errorNodes = this.errorNodes.Add(targetNode);
//IState isomorphicState;
//Transition t;
transCnt++;
if (!visited.Contains(targetIState))
{
if (GoalsSatisfied(simpleAndFsmGoals, targetIState)) goto end;
frontier = frontier.Add(targetIState);
visited = visited.Add(targetIState);
stateCount++;
//visited.Add(targetIState);
//t = new Triple<Term, CompoundTerm, Term>(sourceNode, action, targetNode);
}
//else
//{
// //if (collapseExcludedIsomorphicStates)
// // t = new Triple<Term, CompoundTerm, Term>(sourceNode, action, nodeMap[isomorphicState]);
// //else
// {
// Term isoNode = nodeMap[isomorphicState];
// t = new Triple<Term, CompoundTerm, Term>(sourceNode, action, targetNode);
// if (!targetNode.Equals(sourceNode) && !targetNode.Equals(isoNode))
// groupingTransitions = groupingTransitions.Add(new Triple<Term, CompoundTerm, Term>(targetNode, new CompoundTerm(new Symbol("IsomorphicTo"), new Sequence<Term>()), isoNode));
// }
//}
//this.transitions = this.transitions.Add(t);
//this.hiddenTransitions = this.hiddenTransitions.Remove(t);
}
}
}
}
//Console.WriteLine("Checker results");
//Console.WriteLine("Reached states: "+stateCount);
//Console.WriteLine("Number of transitions: "+transCnt);
ReachabilityResult result = new ReachabilityResult(stateCount, transCnt);
return result;
end:
ReachabilityResult resReached = new ReachabilityResult(stateCount, transCnt);
resReached.Goal = goal;
resReached.GoalReached = true;
return resReached;
}
//internal bool collapseExcludedIsomorphicStates;
//int initTransitions;
//CompoundTerm goal;
/// <summary>
/// Show all transitions from the given node and from the nodes that are reached from
/// the given node etc., until the state space is exhausted or the maximum number
/// of transitions is reached.
/// </summary>
public ReachabilityResult CheckReachability()
{
uint transCnt = 0;
uint stateCount = 0;
//(firstExploration ? (initTransitions < 0 ? maxTransitions : initTransitions) : maxTransitions);
//firstExploration = false;
//excludeIsomorphicStates = false;
if (excludeIsomorphicStates)
{
Set <IState> frontier = new Set <IState>(modelProgram.InitialState);
//stateCount++;
//Set<IState> visited = Set<IState>.EmptySet;
StateContainer <IState> visited = new StateContainer <IState>(this.modelProgram, modelProgram.InitialState);
stateCount++;
// need to add a check about the initial state.
Set <string> transitionPropertyNames = Set <string> .EmptySet;
TransitionProperties transitionProperties;
while (!frontier.IsEmpty)
{
IState sourceIState = frontier.Choose(0);
frontier = frontier.Remove(sourceIState);
foreach (Symbol aSymbol in this.modelProgram.PotentiallyEnabledActionSymbols(sourceIState))
{
foreach (CompoundTerm action in this.modelProgram.GetActions(sourceIState, aSymbol))
{
//Node targetNode = GetTargetNode(sourceNode, action);
IState targetIState = modelProgram.GetTargetState(sourceIState, action, transitionPropertyNames, out transitionProperties);
//if (this.modelProgram.IsAccepting(targetIState))
// this.acceptingNodes = this.acceptingNodes.Add(targetNode);
//if (!this.modelProgram.SatisfiesStateInvariant(targetState))
// this.errorNodes = this.errorNodes.Add(targetNode);
//IState isomorphicState;
//Transition t;
transCnt++;
IState isomorphicState;
if (!visited.HasIsomorphic(targetIState, out isomorphicState))
{
frontier = frontier.Add(targetIState);
visited.Add(targetIState);
stateCount++;
//visited.Add(targetIState);
//t = new Triple<Term, CompoundTerm, Term>(sourceNode, action, targetNode);
}
//else
//{
// //if (collapseExcludedIsomorphicStates)
// // t = new Triple<Term, CompoundTerm, Term>(sourceNode, action, nodeMap[isomorphicState]);
// //else
// {
// Term isoNode = nodeMap[isomorphicState];
// t = new Triple<Term, CompoundTerm, Term>(sourceNode, action, targetNode);
// if (!targetNode.Equals(sourceNode) && !targetNode.Equals(isoNode))
// groupingTransitions = groupingTransitions.Add(new Triple<Term, CompoundTerm, Term>(targetNode, new CompoundTerm(new Symbol("IsomorphicTo"), new Sequence<Term>()), isoNode));
// }
//}
//this.transitions = this.transitions.Add(t);
//this.hiddenTransitions = this.hiddenTransitions.Remove(t);
}
}
}
//Set<IState> frontier = new Set<IState>(stateMap[node]);
//StateContainer<IState> visited = new StateContainer<IState>(this.modelProgram, stateMap[node]);
//while (!frontier.IsEmpty && this.transitions.Count < transCnt)
//{
// IState sourceIState = frontier.Choose(0);
// Node sourceNode = nodeMap[sourceIState];
// frontier = frontier.Remove(sourceIState);
// foreach (Symbol aSymbol in this.modelProgram.PotentiallyEnabledActionSymbols(sourceIState))
// {
// foreach (CompoundTerm action in this.modelProgram.GetActions(sourceIState, aSymbol))
// {
// Node targetNode = GetTargetNode(sourceNode, action);
// IState targetIState = stateMap[targetNode];
// IState isomorphicState;
// Transition t;
// if (!visited.HasIsomorphic(targetIState, out isomorphicState))
// {
// frontier = frontier.Add(targetIState);
// //visited = visited.Add(targetIState);
// visited.Add(targetIState);
// t = new Triple<Term, CompoundTerm, Term>(sourceNode, action, targetNode);
// }
// else
// {
// if (collapseExcludedIsomorphicStates)
// t = new Triple<Term, CompoundTerm, Term>(sourceNode, action, nodeMap[isomorphicState]);
// else
// {
// Term isoNode = nodeMap[isomorphicState];
// t = new Triple<Term, CompoundTerm, Term>(sourceNode, action, targetNode);
// if (!targetNode.Equals(sourceNode) && !targetNode.Equals(isoNode))
// groupingTransitions = groupingTransitions.Add(new Triple<Term, CompoundTerm, Term>(targetNode, new CompoundTerm(new Symbol("IsomorphicTo"), new Sequence<Term>()), isoNode));
// }
// }
// this.transitions = this.transitions.Add(t);
// this.hiddenTransitions = this.hiddenTransitions.Remove(t);
// }
// }
//}
////Console.WriteLine(dashedTransitions.ToString());
////Console.WriteLine(visited.ToString());
}
else
{
Set <IState> frontier = new Set <IState>(modelProgram.InitialState);
stateCount++;
// need to add a check about the initial state.
Set <IState> visited = new Set <IState>(modelProgram.InitialState);
Set <string> transitionPropertyNames = Set <string> .EmptySet;
TransitionProperties transitionProperties;
while (!frontier.IsEmpty)
{
IState sourceIState = frontier.Choose(0);
frontier = frontier.Remove(sourceIState);
foreach (Symbol aSymbol in this.modelProgram.PotentiallyEnabledActionSymbols(sourceIState))
{
foreach (CompoundTerm action in this.modelProgram.GetActions(sourceIState, aSymbol))
{
//Node targetNode = GetTargetNode(sourceNode, action);
IState targetIState = modelProgram.GetTargetState(sourceIState, action, transitionPropertyNames, out transitionProperties);
//Console.WriteLine(sourceIState.ToString());
//Console.WriteLine ("--- " + action + " --->");
//Console.WriteLine (targetIState.ToString());
//Console.WriteLine();
//Console.WriteLine();
//if (this.modelProgram.IsAccepting(targetIState))
// this.acceptingNodes = this.acceptingNodes.Add(targetNode);
//if (!this.modelProgram.SatisfiesStateInvariant(targetState))
// this.errorNodes = this.errorNodes.Add(targetNode);
//IState isomorphicState;
//Transition t;
transCnt++;
if (!visited.Contains(targetIState))
{
frontier = frontier.Add(targetIState);
visited = visited.Add(targetIState);
stateCount++;
//visited.Add(targetIState);
//t = new Triple<Term, CompoundTerm, Term>(sourceNode, action, targetNode);
}
//else
//{
// //if (collapseExcludedIsomorphicStates)
// // t = new Triple<Term, CompoundTerm, Term>(sourceNode, action, nodeMap[isomorphicState]);
// //else
// {
// Term isoNode = nodeMap[isomorphicState];
// t = new Triple<Term, CompoundTerm, Term>(sourceNode, action, targetNode);
// if (!targetNode.Equals(sourceNode) && !targetNode.Equals(isoNode))
// groupingTransitions = groupingTransitions.Add(new Triple<Term, CompoundTerm, Term>(targetNode, new CompoundTerm(new Symbol("IsomorphicTo"), new Sequence<Term>()), isoNode));
// }
//}
//this.transitions = this.transitions.Add(t);
//this.hiddenTransitions = this.hiddenTransitions.Remove(t);
}
}
}
}
//Console.WriteLine("Checker results");
//Console.WriteLine("Reached states: "+stateCount);
//Console.WriteLine("Number of transitions: "+transCnt);
ReachabilityResult result = new ReachabilityResult(stateCount, transCnt);
return(result);
}