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fix in gomory cut

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Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
This commit is contained in:
Lev Nachmanson 2020-03-04 11:59:35 -08:00
parent fad08454c1
commit cbefa8d2b0
1 changed files with 4 additions and 1 deletions
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5
src/math/lp/gomory.cpp
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@ -45,7 +45,8 @@ class create_cut {
const impq & get_value(unsigned j) const { return lia.get_value(j); }
bool is_int(unsigned j) const { return lia.column_is_int(j) || (lia.is_fixed(j) &&
lia.lra.column_lower_bound(j).is_int()); }
bool is_real(unsigned j) const { return !is_int(j); }
bool is_real(unsigned j) const { return lia.is_real(j) && (! (lia.is_fixed(j) &&
lia.lra.column_lower_bound(j).is_int())); }
bool at_lower(unsigned j) const { return lia.at_lower(j); }
bool at_upper(unsigned j) const { return lia.at_upper(j); }
const impq & lower_bound(unsigned j) const { return lia.lower_bound(j); }
@ -54,6 +55,8 @@ class create_cut {
constraint_index column_upper_bound_constraint(unsigned j) const { return lia.column_upper_bound_constraint(j); }
bool column_is_fixed(unsigned j) const { return lia.lra.column_is_fixed(j); }
void int_case_in_gomory_cut(unsigned j) {
lp_assert(is_int(j) && m_fj.is_pos());
TRACE("gomory_cut_detail",