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add filter to gcd test

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2020-01-28 11:30:16 -08:00
parent f161bdaf8f
commit 8b7426f5ad
1 changed files with 8 additions and 3 deletions
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11
src/math/lp/int_solver.cpp
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@ -533,7 +533,13 @@ mpq get_denominators_lcm(const row_strip<mpq> & row) {
}
bool int_solver::gcd_test_for_row(static_matrix<mpq, numeric_pair<mpq>> & A, unsigned i) {
mpq lcm_den = get_denominators_lcm(A.m_rows[i]);
auto const& row = A.m_rows[i];
auto & lcs = m_lar_solver->m_mpq_lar_core_solver;
unsigned basic_var = lcs.m_r_basis[i];
if (!column_is_int(basic_var) || get_value(basic_var).is_int())
return true;
mpq lcm_den = get_denominators_lcm(row);
mpq consts(0);
mpq gcds(0);
mpq least_coeff(0);
@ -771,9 +777,8 @@ bool int_solver::get_freedom_interval_for_column(unsigned j, bool & inf_l, impq
if (column_is_int(i) && column_is_int(j) && !a.is_int())
m = lcm(m, denominator(a));
if (a.is_neg()) {
if (has_low(i))
if (has_low(i))
set_lower(l, inf_l, xj + (xi - lcs.m_r_lower_bounds()[i]) / a);
if (has_upper(i))
set_upper(u, inf_u, xj + (xi - lcs.m_r_upper_bounds()[i]) / a);
}