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#6196

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This commit is contained in:
Nikolaj Bjorner 2022-08-07 09:44:10 +03:00
parent a4ea281602
commit f34317d604
1 changed files with 6 additions and 2 deletions
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8
src/smt/theory_arith_core.h
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@ -563,7 +563,7 @@ namespace smt {
if (!m_util.is_zero(divisor)) {
// if divisor is zero, then idiv and mod are uninterpreted functions.
expr_ref div(m), mod(m), zero(m), abs_divisor(m), one(m);
expr_ref eqz(m), eq(m), lower(m), upper(m), qr(m);
expr_ref eqz(m), eq(m), lower(m), upper(m), qr(m), le(m), ge(m);
div = m_util.mk_idiv(dividend, divisor);
mod = m_util.mk_mod(dividend, divisor);
zero = m_util.mk_int(0);
@ -581,12 +581,16 @@ namespace smt {
tout << "lower: " << lower << "\n";
tout << "upper: " << upper << "\n";);
le = m_util.mk_le(m_util.mk_sub(qr, dividend), zero);
ge = m_util.mk_ge(m_util.mk_sub(qr, dividend), zero);
mk_axiom(eqz, le, false);
mk_axiom(eqz, ge, false);
mk_axiom(eqz, eq, false);
mk_axiom(eqz, lower, false);
mk_axiom(eqz, upper, !m_util.is_numeral(abs_divisor));
rational k;
m_arith_eq_adapter.mk_axioms(ensure_enode(qr), ensure_enode(mod));
//m_arith_eq_adapter.mk_axioms(ensure_enode(qr), ensure_enode(dividend));
if (m_util.is_zero(dividend)) {
mk_axiom(eqz, m.mk_eq(div, zero));