private Predicate createPredicate(ISCContextRoot root, FormulaFactory ff) throws CoreException {
ITypeEnvironmentBuilder te = ff.makeTypeEnvironment();
List<Predicate> selected = new ArrayList<Predicate>();
for (ISCAxiom iscAxiom : root.getSCAxioms()) {
if (iscAxiom.hasAttribute(ContradictionAttribute.ATTRIBUTE)) {
if (iscAxiom.getAttributeValue(ContradictionAttribute.ATTRIBUTE)) {
selected.add(iscAxiom.getPredicate(te));
}
}
}
Predicate conjunctionOfAxioms;
if (selected.size() == 1) {
conjunctionOfAxioms = selected.get(0);
} else {
conjunctionOfAxioms = ff.makeAssociativePredicate(Predicate.LAND, selected, null);
}
List<BoundIdentDecl> theBoundOnes = new ArrayList<BoundIdentDecl>();
conjunctionOfAxioms = conjunctionOfAxioms.bindAllFreeIdents(theBoundOnes);
Predicate full =
ff.makeQuantifiedPredicate(Predicate.EXISTS, theBoundOnes, conjunctionOfAxioms, null);
return full;
}
@Override
public Expression rewriteToEmptySet(SetExtension src) {
final AtomicExpression expr = factory.makeEmptySet(src.getType(), src.getSourceLocation());
return checkReplacement(src, rewriter.rewrite(expr));
}