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add a config parameter to grobner

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Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
This commit is contained in:
Lev Nachmanson 2020-01-08 17:26:04 -08:00
parent cca19ef1a7
commit d1e9998332
6 changed files with 19 additions and 13 deletions
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9
src/math/lp/nla_core.cpp
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@ -1425,18 +1425,21 @@ void core::run_pdd_grobner() {
// configure grobner
// TBD: move this code somewhere self-contained, and tune it.
double tree_size = 100;
unsigned gr_eq_size = 0;
for (auto* e : m_pdd_grobner.equations()) {
tree_size = std::max(tree_size, e->poly().tree_size());
gr_eq_size ++;
}
tree_size *= 10;
struct dd::solver::config cfg;
cfg.m_expr_size_limit = (unsigned)tree_size;
cfg.m_eqs_threshold = m_pdd_grobner.equations().size()*5;
cfg.m_max_steps = m_pdd_grobner.equations().size();
cfg.m_max_steps = gr_eq_size;
cfg.m_eqs_threshold = m_nla_settings.grobner_eqs_growth() * ceil(log(gr_eq_size + 1)) * gr_eq_size;;
m_pdd_grobner.set(cfg);
m_pdd_grobner.set_thresholds();
m_pdd_manager.set_max_num_nodes(10000); // or something proportional to the number of initial nodes.
m_pdd_grobner.set_thresholds();
m_pdd_grobner.saturate();
bool conflict = false;
for (auto eq : m_pdd_grobner.equations()) {