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fix #3423

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2020-03-23 10:27:42 -07:00
parent f158ab8395
commit 84090aaf24
4 changed files with 18 additions and 15 deletions
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22
src/tactic/arith/purify_arith_tactic.cpp
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@ -258,7 +258,7 @@ struct purify_arith_proc {
}
void push_cnstr_pr(proof * def_pr) {
if (produce_proofs())
if (produce_proofs())
m_new_cnstr_prs.push_back(m().mk_th_lemma(u().get_family_id(), m_new_cnstrs.back(), 1, &def_pr));
}
@ -725,15 +725,15 @@ struct purify_arith_proc {
r(q->get_expr(), new_body, new_body_pr);
unsigned num_vars = r.cfg().m_new_vars.size();
expr_ref_vector & cnstrs = r.cfg().m_new_cnstrs;
cnstrs.push_back(new_body);
new_body = m().mk_and(cnstrs.size(), cnstrs.c_ptr());
if (true || !cnstrs.empty()) {
cnstrs.push_back(new_body);
new_body = m().mk_and(cnstrs.size(), cnstrs.c_ptr());
}
TRACE("purify_arith",
tout << "num_vars: " << num_vars << "\n";
tout << "body: " << mk_ismt2_pp(q->get_expr(), m()) << "\nnew_body: " << mk_ismt2_pp(new_body, m()) << "\n";);
if (num_vars == 0) {
result = m().update_quantifier(q, new_body);
if (m_produce_proofs)
result_pr = m().mk_quant_intro(q, to_quantifier(result.get()), result_pr);
}
else {
// Add new constraints
@ -757,11 +757,12 @@ struct purify_arith_proc {
(*replacer)(new_body, new_body);
new_body = m().mk_exists(num_vars, sorts.c_ptr(), names.c_ptr(), new_body, q->get_weight());
result = m().update_quantifier(q, new_body);
if (m_produce_proofs) {
auto& cnstr_prs = r.cfg().m_new_cnstr_prs;
result_pr = m().mk_quant_intro(q, to_quantifier(result.get()), m().mk_rewrite_star(q->get_expr(), new_body, cnstr_prs.size(), cnstr_prs.c_ptr()));
r.cfg().push_cnstr_pr(result_pr);
}
}
if (m_produce_proofs) {
auto& cnstr_prs = r.cfg().m_new_cnstr_prs;
result_pr = m().mk_rewrite_star(q->get_expr(), new_body, cnstr_prs.size(), cnstr_prs.c_ptr());
result_pr = m().mk_quant_intro(q, to_quantifier(result.get()), result_pr);
r.cfg().push_cnstr_pr(result_pr);
}
}
@ -784,6 +785,7 @@ struct purify_arith_proc {
// add cnstraints
sz = r.cfg().m_new_cnstrs.size();
TRACE("purify_arith", tout << r.cfg().m_new_cnstrs << "\n";);
TRACE("purify_arith", tout << r.cfg().m_new_cnstr_prs << "\n";);
for (unsigned i = 0; i < sz; i++) {
m_goal.assert_expr(r.cfg().m_new_cnstrs.get(i), m_produce_proofs ? r.cfg().m_new_cnstr_prs.get(i) : nullptr, nullptr);
}