/// <summary>
/// Add new local variable
/// </summary>
/// <param name="name"></param>
/// <param name="lower"></param>
/// <param name="upper"></param>
public void AddLocalVar(string name, int lower, int upper)
{
varList.AddNewVariable(name, lower, upper);
int numBits = varList.GetNumberOfBits(name);
CUDDNode vr, vc;
CUDDVars rowVar = new CUDDVars();
CUDDVars colVar = new CUDDVars();
for (int j = 0; j < numBits; j++)
{
vr = CUDD.Var(numverOfBoolVars++);
vc = CUDD.Var(numverOfBoolVars++);
rowVar.AddVar(vr);
colVar.AddVar(vc);
}
this.rowVars.Add(rowVar);
this.colVars.Add(colVar);
this.AllRowVars.AddVars(rowVar);
this.AllRowVarsExceptSingleCopy.AddVars(rowVar);
this.AllColVars.AddVars(colVar);
// used for unchanged variable in transition.
CUDDNode identity = CUDD.Constant(0);
for (int i = lower; i <= upper; i++)
{
identity = CUDD.Matrix.SetMatrixElement(identity, rowVar, colVar, i - lower, i - lower, 1);
}
this.varIdentities.Add(identity);
//
CUDDNode expressionDD = CUDD.MINUS_INFINITY; CUDD.Ref(expressionDD);
for (int i = lower; i <= upper; i++)
{
expressionDD = CUDD.Matrix.SetVectorElement(expressionDD, rowVar, i - lower, i);
}
this.variableEncoding.Add(expressionDD);
//
CUDD.Ref(identity);
allRowVarRanges = CUDD.Function.And(allRowVarRanges, CUDD.Abstract.ThereExists(identity, colVar));
CUDD.Ref(identity);
colVarRanges.Add(CUDD.Abstract.ThereExists(identity, rowVar));
}