mirrors/z3
3
0
Fork 0
mirror of https://github.com/Z3Prover/z3 synced 2025-08-03 09:50:23 +00:00
Code Activity

remove iff

Browse source 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2018-05-16 18:35:38 -07:00 • committed by Arie Gurfinkel
parent ecf15ab07d
commit ff0f257102
47 changed files with 199 additions and 264 deletions
Download patch file Download diff file Expand all files Collapse all files

7
src/smt/asserted_formulas.cpp
View file

@ -500,8 +500,7 @@ unsigned asserted_formulas::propagate_values(unsigned i) {
void asserted_formulas::update_substitution(expr* n, proof* pr) {
expr* lhs, *rhs, *n1;
proof_ref pr1(m);
if (is_ground(n) && (m.is_eq(n, lhs, rhs) || m.is_iff(n, lhs, rhs))) {
if (is_ground(n) && m.is_eq(n, lhs, rhs)) {
compute_depth(lhs);
compute_depth(rhs);
if (is_gt(lhs, rhs)) {
@ -511,12 +510,12 @@ void asserted_formulas::update_substitution(expr* n, proof* pr) {
}
if (is_gt(rhs, lhs)) {
TRACE("propagate_values", tout << "insert " << mk_pp(rhs, m) << " -> " << mk_pp(lhs, m) << "\n";);
pr1 = m.proofs_enabled() ? m.mk_symmetry(pr) : nullptr;
m_scoped_substitution.insert(rhs, lhs, pr1);
m_scoped_substitution.insert(rhs, lhs, m.proofs_enabled() ? m.mk_symmetry(pr) : nullptr);
return;
}
TRACE("propagate_values", tout << "incompatible " << mk_pp(n, m) << "\n";);
}
proof_ref pr1(m);
if (m.is_not(n, n1)) {
pr1 = m.proofs_enabled() ? m.mk_iff_false(pr) : nullptr;
m_scoped_substitution.insert(n1, m.mk_false(), pr1);