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fixmul negative case

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2022-08-23 08:20:32 -07:00
parent 8128ae8109
commit 437e83f6de
1 changed files with 2 additions and 1 deletions
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3
src/math/polysat/simplify_clause.cpp
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@ -40,7 +40,8 @@ namespace polysat {
pdd r(m); pdd r(m);
v = p - p.offset(); v = p - p.offset();
r = p - v; r = p - v;
if (p.leading_coefficient() < 0) { auto const& lc = p.leading_coefficient();
if (mod(-lc, m.two_to_N()) < lc) {
v = -v; v = -v;
r -= m.mk_var(max_var); r -= m.mk_var(max_var);
} }