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fix #4230

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2020-05-09 18:49:00 -07:00
parent f044071f5e
commit 4890c3ce31
7 changed files with 61 additions and 33 deletions
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6
src/math/lp/nla_tangent_lemmas.cpp
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@ -74,7 +74,7 @@ struct imp {
void generate_tang_plane(const point & pl) {
new_lemma lemma(c());
new_lemma lemma(c(), "generate tangent plane");
c().negate_relation(m_jx, m_x.rat_sign()*pl.x);
c().negate_relation(m_jy, m_y.rat_sign()*pl.y);
#if Z3DEBUG
@ -95,13 +95,13 @@ struct imp {
void generate_two_tang_lines() {
{
new_lemma lemma(c());
new_lemma lemma(c(), "two tangent planes 1");
// Should be v = val(m_x)*val(m_y), and val(factor) = factor.rat_sign()*var(factor.var())
c().mk_ineq(m_jx, llc::NE, c().val(m_jx));
c().mk_ineq(m_j, - m_y.rat_sign() * m_xy.x, m_jy, llc::EQ);
}
{
new_lemma lemma(c());
new_lemma lemma(c(), "two tangent planes 2");
c().mk_ineq(m_jy, llc::NE, c().val(m_jy));
c().mk_ineq(m_j, - m_x.rat_sign() * m_xy.y, m_jx, llc::EQ);
}