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use var equivalence when evaluating the interval over an expression

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Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
This commit is contained in:
Lev Nachmanson 2019-08-21 14:35:21 -07:00
parent 81a9edae7e
commit 108bfa55ad
6 changed files with 40 additions and 10 deletions
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4
src/math/lp/nla_core.cpp
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@ -409,10 +409,10 @@ bool core:: explain_ineq(const lp::lar_term& t, llc cmp, const rational& rs) {
/**
* \brief
if t is an octagon term -+x -+ y try to explain why the term always
if t is an octagon term -+x -+ y try to explain why the term always is
equal zero
*/
bool core:: explain_by_equiv(const lp::lar_term& t, lp::explanation& e) {
bool core:: explain_by_equiv(const lp::lar_term& t, lp::explanation& e) const {
lpvar i,j;
bool sign;
if (!is_octagon_term(t, sign, i, j))