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code simplification, fix conflict in new_diseq_eh

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2026-04-21 10:17:43 +02:00
parent 352b14fe2b
commit 8cc85a7d7b
5 changed files with 47 additions and 47 deletions
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19
src/smt/theory_nseq.cpp
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@ -232,10 +232,9 @@ namespace smt {
auto e2 = n2->get_expr();
TRACE(seq, tout << mk_pp(e1, m) << " == " << mk_pp(e2, m) << "\n");
if (m_seq.is_re(e1)) {
seq_rewriter rw(m);
expr_ref s(m), r(m);
r = m_seq.re.mk_union(m_seq.re.mk_diff(e1, e2), m_seq.re.mk_diff(e2, e1));
switch (rw.some_seq_in_re(r, s)) {
expr_ref s(m);
auto r = m_rewriter.mk_symmetric_diff(e1, e2);
switch (m_rewriter.some_seq_in_re(r, s)) {
case l_false:
// regexes are equivalent: nothing to do
return;
@ -277,15 +276,15 @@ namespace smt {
auto e2 = n2->get_expr();
TRACE(seq, tout << mk_pp(e1, m) << " != " << mk_pp(e2, m) << "\n");
if (m_seq.is_re(e1)) {
seq_rewriter rw(m);
expr_ref s(m), r(m);
r = m_seq.re.mk_union(m_seq.re.mk_diff(e1, e2), m_seq.re.mk_diff(e2, e1));
switch (rw.some_seq_in_re(r, s)) {
expr_ref s(m);
auto r = m_rewriter.mk_symmetric_diff(e1, e2);
switch (m_rewriter.some_seq_in_re(r, s)) {
case l_false: {
enode_pair_vector eqs;
auto lit = mk_eq(e1, e2, false);
literal_vector lits;
lits.push_back(lit);
ctx.mk_th_axiom(get_id(), lits.size(), lits.data());
lits.push_back(~lit);
set_conflict(eqs, lits);
break;
}
case l_true: