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* avoid creating rows with  all but one fixed columns

Signed-off-by: Lev Nachmanson <levnach@hotmail.com>

* pb

Signed-off-by: Lev Nachmanson <levnach@hotmail.com>

* once in a while flip bounds of boxed variables during move_nbasic_to_bounds

Signed-off-by: Lev Nachmanson <levnach@hotmail.com>

* flip rarely

Signed-off-by: Lev Nachmanson <levnach@hotmail.com>

* flip rarely

Signed-off-by: Lev Nachmanson <levnach@hotmail.com>

* flip rarely

Signed-off-by: Lev Nachmanson <levnach@hotmail.com>

* return an empty model when lar_solver is not ready

Signed-off-by: Lev Nachmanson <levnach@hotmail.com>

* randomly change bounded base var on demand only

Signed-off-by: Lev Nachmanson <levnach@hotmail.com>

* randomly change bounded base var on demand only

Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
This commit is contained in:
Lev Nachmanson 2020-09-25 17:47:29 -07:00 • committed by GitHub
parent e775964cfd
commit 25724401cf
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10 changed files with 72 additions and 70 deletions
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src/math/lp/int_branch.h
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@ -28,7 +28,7 @@ namespace lp {
class int_solver& lia;
class lar_solver& lra;
lia_move create_branch_on_column(int j);
int find_inf_int_base_column();
int find_inf_int_column();
public:
int_branch(int_solver& lia);