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port look for 0 witness

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Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
This commit is contained in:
Lev Nachmanson 2024-08-06 18:25:31 -10:00 • committed by Lev Nachmanson
parent a09e412cf0
commit 0306eff692
4 changed files with 58 additions and 27 deletions
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4
src/nlsat/nlsat_solver.cpp
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@ -218,6 +218,7 @@ namespace nlsat {
bool m_inline_vars;
bool m_log_lemmas;
bool m_check_lemmas;
bool m_look_for_0_witness;
unsigned m_max_conflicts;
unsigned m_lemma_count;
@ -289,6 +290,7 @@ namespace nlsat {
m_inline_vars = p.inline_vars();
m_log_lemmas = p.log_lemmas();
m_check_lemmas = p.check_lemmas();
m_look_for_0_witness = p.look_for_zero_witness();
m_ism.set_seed(m_random_seed);
m_explain.set_simplify_cores(m_simplify_cores);
m_explain.set_minimize_cores(min_cores);
@ -1518,7 +1520,7 @@ namespace nlsat {
void select_witness() {
scoped_anum w(m_am);
SASSERT(!m_ism.is_full(m_infeasible[m_xk]));
m_ism.peek_in_complement(m_infeasible[m_xk], is_int(m_xk), w, m_randomize);
m_ism.pick_in_complement(m_infeasible[m_xk], is_int(m_xk), w, m_randomize, m_look_for_0_witness);
TRACE("nlsat",
tout << "infeasible intervals: "; m_ism.display(tout, m_infeasible[m_xk]); tout << "\n";
tout << "assigning "; m_display_var(tout, m_xk) << "(x" << m_xk << ") -> " << w << "\n";);