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add logging to lar-solver to capture state for unbounded optimization

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2019-03-03 20:33:12 -08:00
parent 19e7b75536
commit 0c0e79a937
4 changed files with 19 additions and 12 deletions
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15
src/util/lp/lar_solver.cpp
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@ -403,12 +403,15 @@ bool lar_solver::maximize_term_on_tableau(const lar_term & term,
m_mpq_lar_core_solver.m_r_solver.set_status(lp_status::FEASIBLE);
m_mpq_lar_core_solver.solve();
if (m_mpq_lar_core_solver.m_r_solver.get_status() == lp_status::UNBOUNDED)
lp_status st = m_mpq_lar_core_solver.m_r_solver.get_status();
TRACE("lar_solver", tout << st << "\n";);
if (st == lp_status::UNBOUNDED) {
return false;
term_max = term.apply(m_mpq_lar_core_solver.m_r_x);
return true;
}
else {
term_max = term.apply(m_mpq_lar_core_solver.m_r_x);
return true;
}
}
bool lar_solver::costs_are_zeros_for_r_solver() const {
@ -452,7 +455,7 @@ void lar_solver::set_costs_to_zero(const lar_term& term) {
void lar_solver::prepare_costs_for_r_solver(const lar_term & term) {
TRACE("lar_solver", print_term(term, tout << "prepare: "););
TRACE("lar_solver", print_term(term, tout << "prepare: ") << "\n";);
auto & rslv = m_mpq_lar_core_solver.m_r_solver;
rslv.m_using_infeas_costs = false;
lp_assert(costs_are_zeros_for_r_solver());