451452453454455456457458459460461
private ISet available(){ ISet avail = availableSetElements; for(int j = 0; j < currentVar; j++){ if(isSetVar(j)){ if(varVal[j] != null) avail = avail.subtract((ISet)varVal[j]); } else { if(varVal[j] != null) avail = avail.delete(varVal[j]); } }