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add hint verification, combine bounds/farkas into one rule

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2022-05-29 10:12:05 -07:00
parent 36ad377a7d
commit bffa7ff2f6
9 changed files with 59 additions and 49 deletions
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6
src/sat/smt/arith_solver.cpp
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@ -263,7 +263,7 @@ namespace arith {
TRACE("arith", for (auto lit : m_core) tout << lit << ": " << s().value(lit) << "\n";);
DEBUG_CODE(for (auto lit : m_core) { VERIFY(s().value(lit) == l_true); });
++m_stats.m_bound_propagations1;
assign(lit, m_core, m_eqs, explain(sat::hint_type::bound_h));
assign(lit, m_core, m_eqs, explain(sat::hint_type::farkas_h, lit));
}
if (should_refine_bounds() && first)
@ -378,7 +378,7 @@ namespace arith {
reset_evidence();
m_explanation.clear();
lp().explain_implied_bound(be, m_bp);
assign(bound, m_core, m_eqs, explain(sat::hint_type::bound_h));
assign(bound, m_core, m_eqs, explain(sat::hint_type::farkas_h, bound));
}
@ -1177,7 +1177,7 @@ namespace arith {
app_ref b = mk_bound(m_lia->get_term(), m_lia->get_offset(), !m_lia->is_upper());
IF_VERBOSE(4, verbose_stream() << "cut " << b << "\n");
literal lit = expr2literal(b);
assign(lit, m_core, m_eqs, explain(sat::hint_type::cut_h));
assign(lit, m_core, m_eqs, explain(sat::hint_type::cut_h, lit));
lia_check = l_false;
break;
}