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convert term indices to columns in lar_solver::add_equality()

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Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
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Lev Nachmanson 2020-03-24 12:44:50 -07:00
parent e2538afd32
commit bc5b68b16e
1 changed files with 6 additions and 0 deletions
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6
src/math/lp/lar_solver.cpp
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@ -2364,6 +2364,12 @@ bool lar_solver::fetch_normalized_term_column(const lar_term& c, std::pair<mpq,
std::pair<constraint_index, constraint_index> lar_solver::add_equality(lpvar j, lpvar k) {
vector<std::pair<mpq, var_index>> coeffs;
if (tv::is_term(j))
j = map_term_index_to_column_index(j);
if (tv::is_term(k))
k = map_term_index_to_column_index(k);
coeffs.push_back(std::make_pair(mpq(1),j));
coeffs.push_back(std::make_pair(mpq(-1),k));
unsigned term_index = add_term(coeffs, UINT_MAX); // UINT_MAX is the external null var