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add review comment to bug location

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2022-12-24 12:40:47 -08:00
parent 48cd05c725
commit e978b81c7a
3 changed files with 15 additions and 3 deletions
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9
src/math/polysat/saturation.cpp
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@ -1199,7 +1199,6 @@ namespace polysat {
bool saturation::try_factor_equality2(pvar x, conflict& core, inequality const& a_l_b) {
set_rule("[x] ax + b = 0 & C[x] => C[-inv(a)*b]");
auto& m = s.var2pdd(x);
unsigned N = m.power_of_2();
pdd y = m.zero();
pdd a = y, b = y, a1 = y, b1 = y;
if (!is_AxB_eq_0(x, a_l_b, a, b, y))
@ -1242,20 +1241,24 @@ namespace polysat {
auto const& ule = c->to_ule();
auto p = replace(ule.lhs());
auto q = replace(ule.rhs());
if (!change)
continue;
m_lemma.reset();
m_lemma.insert(~c);
m_lemma.insert_eval(~s.eq(y));
if (change && propagate(x, core, a_l_b, c.is_positive() ? s.ule(p, q) : ~s.ule(p, q)))
if (propagate(x, core, a_l_b, c.is_positive() ? s.ule(p, q) : ~s.ule(p, q)))
prop = true;
}
else if (c->is_umul_ovfl()) {
auto const& ovf = c->to_umul_ovfl();
auto p = replace(ovf.p());
auto q = replace(ovf.q());
if (!change)
continue;
m_lemma.reset();
m_lemma.insert(~c);
m_lemma.insert_eval(~s.eq(y));
if (change && propagate(x, core, a_l_b, c.is_positive() ? s.umul_ovfl(p, q) : ~s.umul_ovfl(p, q)))
if (propagate(x, core, a_l_b, c.is_positive() ? s.umul_ovfl(p, q) : ~s.umul_ovfl(p, q)))
prop = true;
}
}