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fix #6988

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This commit is contained in:
Nikolaj Bjorner 2023-11-14 07:30:32 -08:00
parent c2610cb37c
commit 3c2e97ddb6
1 changed files with 6 additions and 5 deletions
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11
src/qe/nlqsat.cpp
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@ -558,9 +558,13 @@ namespace qe {
div_rewriter_cfg(nlqsat& s): m(s.m), a(s.m), m_zero(a.mk_real(0), m) {}
~div_rewriter_cfg() {}
br_status reduce_app(func_decl* f, unsigned sz, expr* const* args, expr_ref& result, proof_ref& pr) {
rational r(1);
rational r1, r(1);
if (a.is_div(f) && sz == 2 && a.is_numeral(args[0], r1) && a.is_numeral(args[1], r) && !r.is_zero()) {
result = a.mk_real(r1 / r);
return BR_DONE;
}
if (is_decl_of(f, a.get_family_id(), OP_DIV) &&
sz == 2 && (!a.is_numeral(args[1], r) || r.is_zero()) &&
sz == 2 &&
is_ground(args[0]) && is_ground(args[1])) {
result = m.mk_fresh_const("div", a.mk_real());
m_divs.push_back(div(m, args[0], args[1], to_app(result)));
@ -609,9 +613,6 @@ namespace qe {
}
expr* n1, *n2;
rational r;
if (a.is_div(n, n1, n2) && a.is_numeral(n2, r) && !r.is_zero()) {
return;
}
if (a.is_power(n, n1, n2) && a.is_numeral(n2, r) && r.is_unsigned() && r.is_pos()) {
return;
}