{
d_ppFacts.push_back(in);
d_ppEqualityEngine.assertEquality(in, true, in);
- if (in[0].isVar() && !in[1].hasSubterm(in[0])) {
+ if (in[0].isVar() && !in[1].hasSubterm(in[0]) && (in[1].getType()).isSubtypeOf(in[0].getType()) ){
outSubstitutions.addSubstitution(in[0], in[1]);
return PP_ASSERT_STATUS_SOLVED;
}
- if (in[1].isVar() && !in[0].hasSubterm(in[1])) {
+ if (in[1].isVar() && !in[0].hasSubterm(in[1]) && (in[0].getType()).isSubtypeOf(in[1].getType())){
outSubstitutions.addSubstitution(in[1], in[0]);
return PP_ASSERT_STATUS_SOLVED;
}