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fix a bug in nex_creator, already fixed in debug branch

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Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
This commit is contained in:
Lev Nachmanson 2020-03-17 14:46:46 -07:00
parent fd54408629
commit dae3cd450b
1 changed files with 6 additions and 1 deletions
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7
src/math/lp/nex_creator.cpp
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@ -156,7 +156,12 @@ bool nex_creator::gt_on_var_nex(const nex_var& a, const nex& b) const {
return b.get_degree() <= 1 && gt_on_var_nex(a, *b.to_mul()[0].e()); return b.get_degree() <= 1 && gt_on_var_nex(a, *b.to_mul()[0].e());
case expr_type::SUM: case expr_type::SUM:
SASSERT(b.size() > 1); SASSERT(b.size() > 1);
return gt(&a, b.to_sum()[0]); if(gt(&a, b.to_sum()[0]))
return true;
if (gt(b.to_sum()[0], &a ))
return false;
return true;
default: default:
UNREACHABLE(); UNREACHABLE();
return false; return false;