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branch on a free variable before trying Gomory cuts

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Signed-off-by: Lev Nachmanson <levnach@microsoft.com>
This commit is contained in:
Lev Nachmanson 2017-07-11 16:44:04 -07:00
parent bac16bac85
commit 2056404ed4
4 changed files with 54 additions and 18 deletions
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2
src/smt/theory_arith_int.h
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@ -1387,7 +1387,7 @@ namespace smt {
m_branch_cut_counter++;
// TODO: add giveup code
if (m_branch_cut_counter % m_params.m_arith_branch_cut_ratio == 0) {
if (true || m_branch_cut_counter % m_params.m_arith_branch_cut_ratio == 0) { // remove true :todo
TRACE("opt_verbose", display(tout););
move_non_base_vars_to_bounds();
if (!make_feasible()) {