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fix #8563 - align indices for flat quantifiers with sks vector layout, and also guard creating instantiation equalities with sort checks

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2026-02-16 20:57:26 -08:00
parent c0e8698bae
commit cff06b528f
1 changed files with 12 additions and 10 deletions
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22
src/smt/smt_model_finder.cpp
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@ -2545,11 +2545,11 @@ namespace smt {
// Since we only care about q (and its bindings), it only makes sense to restrict the variables of q.
bool asserted_something = false;
unsigned num_decls = q->get_num_decls();
// Remark: sks were created for the flat version of q.
// Remark: sks were created for the flat version of q.
SASSERT(get_flat_quantifier(q)->get_num_decls() == sks.size());
SASSERT(sks.size() >= num_decls);
for (unsigned i = 0; i < num_decls; ++i) {
expr* sk = sks.get(num_decls - i - 1);
expr *sk = sks.get(sks.size() - i - 1);
instantiation_set const* s = get_uvar_inst_set(q, i);
if (s == nullptr)
continue; // nothing to do
@ -2557,15 +2557,17 @@ namespace smt {
if (inv.empty())
continue; // nothing to do
ptr_buffer<expr> eqs;
for (auto const& kv : inv) {
expr* val = kv.m_key;
eqs.push_back(m.mk_eq(sk, val));
for (auto const& [val, _] : inv) {
if (val->get_sort() == sk->get_sort())
eqs.push_back(m.mk_eq(sk, val));
}
if (!eqs.empty()) {
expr_ref new_cnstr(m);
new_cnstr = m.mk_or(eqs);
TRACE(model_finder, tout << "assert_restriction:\n" << mk_pp(new_cnstr, m) << "\n";);
aux_ctx->assert_expr(new_cnstr);
asserted_something = true;
}
expr_ref new_cnstr(m);
new_cnstr = m.mk_or(eqs);
TRACE(model_finder, tout << "assert_restriction:\n" << mk_pp(new_cnstr, m) << "\n";);
aux_ctx->assert_expr(new_cnstr);
asserted_something = true;
}
return asserted_something;
}