public static void Reset()
{
//Debug.WriteLine("SAT Reset IN!");
instance = null;
ConstraintSystemSolver newSolver = ConstraintSystemSolver.Instance;
wireTermsDictionary.Clear();
//Debug.WriteLine("SAT Reset OUT!");
}
/// <summary>
/// If true its a diagnosis
// If false its a conflict
/// </summary>
/// <param name="observation"></param>
/// <param name="posibleConflict"></param>
/// <returns></returns>
public bool CheckConsistensy(Observation observation, List <Gate> posibleConflict)
{
lock (Locker)
{
//Debug.WriteLine("SAT CheckConsistensy IN!");
// Set broken gates
foreach (Gate gate in posibleConflict)
{
gate.IsNotHealthy = true;
}
/*
* // Add input constrain
* List<Wire> allInputWires = observation.TheModel.Input;
* foreach (Wire wire in allInputWires)
* {
* Solver.AddConstraints(wire.GetTerm());
* }
*
*
* // Add output constrain
* List<Wire> allOutputWires = observation.TheModel.Output;
* foreach (Wire wire in allOutputWires)
* {
* Solver.AddConstraints(wire.GetTerm());
* }
*/
// Add components constrain
List <Gate> allSystemGates = observation.TheModel.Components;
foreach (Gate gate in allSystemGates)
{
gate.AddConstaint();
}
ConstraintSolverSolution solution;
try
{
solution = Solver.Solve();
}
catch (Exception)
{
Reset();
solution = Solver.Solve();
}
// If true its a diagnosis
// If false its a conflict
bool explainOutput = solution.HasFoundSolution;
if (!explainOutput)
{
Debug.WriteLine("SAT Doesn't found a solution. The new node is N-O-T a diagnosis!");
}
//Reset
instance = null;
Solver.ResetSolver();
ConstraintSystemSolver newSolver = ConstraintSystemSolver.Instance;
wireTermsDictionary.Clear();
//Revert broken
foreach (Gate gate in posibleConflict)
{
gate.IsNotHealthy = false;
}
//Debug.WriteLine("SAT CheckConsistensy OUT!");
return(explainOutput);
}
}
