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do not add row with free basic vars in grobner, more tracing

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Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
This commit is contained in:
Lev Nachmanson 2019-12-03 16:56:41 -08:00
parent 6752463a8c
commit 0b1023c2c7
7 changed files with 30 additions and 3 deletions
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4
src/math/lp/nla_common.cpp
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@ -141,8 +141,10 @@ nex * common::nexvar(const rational & coeff, lpvar j, nex_creator& cn, bool fixe
for (lpvar k : m.vars()) {
if (fixed_as_scalars && c().var_is_fixed(k)) {
auto & b = c().m_lar_solver.get_lower_bound(k).x;
if (b.is_zero())
if (b.is_zero()) {
TRACE("nla_grobner", tout << "[" << k << "] is fixed to zero\n";);
return nullptr;
}
e->coeff() *= b;
continue;
}