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init of m_active_vars_weights and fixes in is_simplified

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Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
This commit is contained in:
Lev Nachmanson 2019-10-07 16:19:28 -07:00
parent b2d1bcc8cd
commit 0c126031b0
12 changed files with 129 additions and 92 deletions
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10
src/math/lp/nex_creator.h
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@ -57,11 +57,11 @@ class nex_creator {
svector<unsigned> m_active_vars_weights;
public:
static char ch(unsigned j) {
// std::stringstream s;
// s << "v" << j;
// return s.str();
return (char)('a'+j);
static std::string ch(unsigned j) {
std::stringstream s;
s << "v" << j;
return s.str();
// return (char)('a'+j);
}
// assuming that every lpvar is less than this number