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fixes in lar_solver around nl unit propagation

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Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
This commit is contained in:
Lev Nachmanson 2023-10-01 11:39:58 -07:00
parent 702322a6e9
commit a297a2b25c
8 changed files with 28 additions and 6 deletions
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11
src/math/lp/lar_solver.cpp
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@ -476,6 +476,9 @@ namespace lp {
auto& x = m_mpq_lar_core_solver.m_r_x[j];
auto delta = new_val - x;
x = new_val;
TRACE("lar_solver_feas", tout << "setting " << j << " to "
<< new_val << (column_is_feasible(j)?"feas":"non-feas") << "\n";);
m_mpq_lar_core_solver.m_r_solver.track_column_feasibility(j);
change_basic_columns_dependend_on_a_given_nb_column(j, delta);
}
@ -1101,7 +1104,6 @@ namespace lp {
mpq lar_solver::get_value(column_index const& j) const {
SASSERT(get_status() == lp_status::OPTIMAL || get_status() == lp_status::FEASIBLE);
SASSERT(m_columns_with_changed_bounds.empty());
numeric_pair<mpq> const& rp = get_column_value(j);
return from_model_in_impq_to_mpq(rp);
}
@ -1818,7 +1820,7 @@ namespace lp {
if (is_base(j) && column_is_fixed(j))
m_fixed_base_var_set.insert(j);
TRACE("lar_solver_feas", tout << "j = " << j << " became " << (this->column_is_feasible(j) ? "feas" : "non-feas") << ", and " << (this->column_is_bounded(j) ? "bounded" : "non-bounded") << std::endl;);
TRACE("lar_solver_feas", tout << "j = " << j << " became " << (this->column_is_feasible(j) ? "feas" : "non-feas") << ", and " << (this->column_is_bounded(j) ? "bounded" : "non-bounded") << " val = " << get_column_value(j) << std::endl;);
}
void lar_solver::insert_to_columns_with_changed_bounds(unsigned j) {
@ -2363,6 +2365,11 @@ namespace lp {
SASSERT(bdep != nullptr);
m_crossed_bounds_deps = m_dependencies.mk_join(bdep, dep);
}
void lar_solver::track_column_feasibility(lpvar j) {
m_mpq_lar_core_solver.m_r_solver.track_column_feasibility(j);
}
} // namespace lp