public void MyTest()
{
PDLEnumerator pdlEnumerator = new PDLEnumerator();
var solver = new CharSetSolver(BitWidth.BV64);
List <char> alph = new List <char> {
'a', 'b'
};
HashSet <char> al = new HashSet <char>(alph);
var a = solver.MkCharConstraint(false, 'a');
var b = solver.MkCharConstraint(false, 'b');
var moves = new List <Move <BDD> >();
moves.Add(new Move <BDD>(0, 1, a));
moves.Add(new Move <BDD>(0, 3, b));
moves.Add(new Move <BDD>(1, 2, b));
moves.Add(new Move <BDD>(2, 1, a));
moves.Add(new Move <BDD>(1, 1, a));
moves.Add(new Move <BDD>(2, 2, b));
moves.Add(new Move <BDD>(3, 4, a));
moves.Add(new Move <BDD>(4, 3, b));
moves.Add(new Move <BDD>(3, 3, b));
moves.Add(new Move <BDD>(4, 4, a));
var dfa1 = Automaton <BDD> .Create(0, new int[] { 0, 1, 3 }, moves).Determinize(solver).Minimize(solver);
foreach (var v in pdlEnumerator.SynthesizePDL(al, dfa1, solver, new StringBuilder(), 5000))
{
Console.WriteLine(PDLUtil.ToEnglishString(v));
break;
}
}
public override string ToString()
{
long enumTimeout = 1000L;
#region feedback components
PDLEnumerator pdlEnumerator = new PDLEnumerator();
PDLPred symmPhi = null;
PDLPred underPhi = null;
string posWitness = null;
string negWitness = null;
//If hint or solution try computing the description of the symmdiff
if (level == FeedbackLevel.Hint || level == FeedbackLevel.Solution)
{
//Avoid formulas that are too complex
var maxSize = 7;
if (symmetricDifference.StateCount < 15)
{
foreach (var phi1 in pdlEnumerator.SynthesizePDL(alphabet, symmetricDifference, solver, new StringBuilder(), enumTimeout))
{
var sizePhi1 = phi1.GetFormulaSize();
if (sizePhi1 < maxSize && !phi1.IsComplex())
{
maxSize = sizePhi1;
symmPhi = phi1;
}
}
}
}
//Avoid empty string case and particular string
if (symmPhi is PDLEmptyString || symmPhi is PDLIsString)
{
symmPhi = null;
}
//If not minimal try computing and underapprox of symmdiff
if (symmPhi == null && level != FeedbackLevel.Minimal)
{
//Avoid formulas that are too complex
var minSize = 9;
if (symmetricDifference.StateCount < 15)
{
foreach (var phi2 in pdlEnumerator.SynthesizeUnderapproximationPDL(alphabet, symmetricDifference, solver, new StringBuilder(), enumTimeout))
{
var formula = phi2.First;
var sizeForm = formula.GetFormulaSize();
if (sizeForm < minSize && !formula.IsComplex())
{
minSize = sizeForm;
underPhi = formula;
}
break;
}
}
}
//Avoid empty string case and particular string
if (underPhi is PDLEmptyString || underPhi is PDLIsString)
{
underPhi = null;
}
if (!positiveDifference.IsEmpty)
{
posWitness = DFAUtilities.GenerateShortTerm(positiveDifference, solver);
}
else
{
negWitness = DFAUtilities.GenerateShortTerm(negativeDifference, solver);
}
#endregion
string result = ""; //string.Format("U: {0}%. ", utility);
if (symmPhi != null)
{
if (symmPhi is PDLEmptyString)
{
result += "Your solution does not behave correctly on the empty string";
}
else
{
result += string.Format("Your solution is not correct on this set of strings: <br /> <div align='center'>{0}</div>", PDLUtil.ToEnglishString(symmPhi));
}
}
else
if (underPhi != null)
{
if (underPhi is PDLEmptyString)
{
result += "Your solution does not behave correctly on the empty string";
}
else
{
result += string.Format("Your solution is not correct on this set of strings: <br /> <div align='center'>{0}</div>",
PDLUtil.ToEnglishString(underPhi));
}
}
else
{
if (posWitness != null)
{
result += string.Format("Your solution does not accept the {0} while the correct solution does.",
posWitness != "" ? "string '<i>" + posWitness + "</i>'" : "empty string");
}
else
{
result += string.Format("Your solution accepts the {0} while the correct solution doesn't.",
negWitness != "" ? "string '<i>" + negWitness + "</i>'" : "empty string");
}
}
return(result);
}
