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fixes in nex expressions simplifications

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Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
This commit is contained in:
Lev Nachmanson 2019-10-18 14:24:20 -07:00
parent 7fbf3e0707
commit 64b189d932
6 changed files with 207 additions and 45 deletions
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3
src/math/lp/horner.cpp
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@ -99,6 +99,9 @@ bool horner::lemmas_on_row(const T& row) {
create_sum_from_row(row, cn.get_nex_creator(), m_row_sum, m_fixed_var_constraints_for_row);
set_active_vars_weights(); // without this call the comparisons will be incorrect
nex* e = m_nex_creator.simplify(&m_row_sum);
TRACE("nla_horner", tout << "e = " << * e << "\n";);
if (e->get_degree() < 2)
return false;
if (!e->is_sum())
return false;