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fixing the order

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Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
This commit is contained in:
Lev Nachmanson 2025-10-06 13:22:18 -07:00
parent 542e015550
commit aa5645b54b
1 changed files with 9 additions and 6 deletions
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15
src/ast/normal_forms/nnf.cpp
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@ -566,7 +566,8 @@ struct nnf::imp {
expr * _then = rs[2];
expr * _else = rs[3];
app * r = m.mk_and(m.mk_or(_not_cond, _then), m.mk_or(_cond, _else));
expr* a = m.mk_or(_not_cond, _then);
app * r = m.mk_and(a, m.mk_or(_cond, _else));
m_result_stack.shrink(fr.m_spos);
m_result_stack.push_back(r);
if (proofs_enabled()) {
@ -612,11 +613,13 @@ struct nnf::imp {
app * r;
if (is_eq(t) == fr.m_pol) {
auto a = m.mk_or(not_lhs, rhs);
expr* a = m.mk_or(not_lhs, rhs);
r = m.mk_and(a, m.mk_or(lhs, not_rhs));
}
else
r = m.mk_and(m.mk_or(lhs, rhs), m.mk_or(not_lhs, not_rhs));
else {
expr* a = m.mk_or(lhs, rhs);
r = m.mk_and(a, m.mk_or(not_lhs, not_rhs));
}
m_result_stack.shrink(fr.m_spos);
m_result_stack.push_back(r);
if (proofs_enabled()) {
@ -688,8 +691,8 @@ struct nnf::imp {
if (proofs_enabled()) {
expr_ref aux(m);
aux = m.mk_label(true, names.size(), names.data(), arg);
pr = m.mk_transitivity(mk_proof(fr.m_pol, 1, &arg_pr, t, to_app(aux)),
m.mk_iff_oeq(m.mk_rewrite(aux, r)));
auto a = mk_proof(fr.m_pol, 1, &arg_pr, t, to_app(aux));
pr = m.mk_transitivity(a, m.mk_iff_oeq(m.mk_rewrite(aux, r)));
}
}
else {