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Code Activity

solve send-more-money_lev.smt2

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

handle integer vars in random_update

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

call the assert in gomory_cut and branching to a correct place

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

fixes in goromy cut

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

disable x values tracking in random_update

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

more fixes in gomory cut

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

change in mk_bound by Nikolaj

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

fixes in gomory cut and setup

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

fixes in int_solver

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

change a printout

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

fix by Nikolaj in treating terms returned by int_solver

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

fix syntax

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

fix a free coefficient bug in bound propagaion and simplify gomory cut

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

avoid tracking pivoted rows during int_solver::check()
This commit is contained in:
Lev Nachmanson 2017-07-27 10:49:00 -07:00 • committed by Lev Nachmanson
parent aba7dcab3e
commit db8f01894f
31 changed files with 894 additions and 767 deletions
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3
src/smt/theory_arith_int.h
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@ -1385,6 +1385,7 @@ namespace smt {
m_branch_cut_counter++;
// TODO: add giveup code
TRACE("gomory_cut", tout << m_branch_cut_counter << ", " << m_params.m_arith_branch_cut_ratio << std::endl;);
if (m_branch_cut_counter % m_params.m_arith_branch_cut_ratio == 0) {
TRACE("opt_verbose", display(tout););
move_non_base_vars_to_bounds();
@ -1399,7 +1400,7 @@ namespace smt {
SASSERT(is_base(int_var));
row const & r = m_rows[get_var_row(int_var)];
if (!mk_gomory_cut(r)) {
// silent failure
TRACE("gomory_cut", tout << "silent failure\n";);
}
return FC_CONTINUE;
}