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change conflict to th_axiom (#78)

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2018-08-26 14:54:54 +02:00 • committed by Lev Nachmanson
parent 3138c929ee
commit a9a45b7b47
2 changed files with 25 additions and 23 deletions
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38
src/smt/theory_lra.cpp
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@ -2102,10 +2102,7 @@ public:
literal lit(ctx().get_bool_var(atom), pos);
core.push_back(~lit);
}
std::cout << "the following conjunction should be unsat:\n";
ctx().display_literals_verbose(std::cout << "core ", core) << "\n";
display_evidence(std::cout, m_explanation); std::cout << "\n";
set_conflict(core);
set_conflict_or_lemma(core, false);
break;
}
case l_true:
@ -3174,10 +3171,10 @@ public:
void set_conflict1() {
literal_vector core;
set_conflict(core);
set_conflict_or_lemma(core, true);
}
void set_conflict(literal_vector const& core) {
void set_conflict_or_lemma(literal_vector const& core, bool is_conflict) {
m_eqs.reset();
m_core.reset();
m_params.reset();
@ -3185,12 +3182,6 @@ public:
m_core.push_back(lit);
}
// m_solver->shrink_explanation_to_minimum(m_explanation); // todo, enable when perf is fixed
/*
static unsigned cn = 0;
static unsigned num_l = 0;
num_l+=m_explanation.size();
std::cout << num_l / (++cn) << "\n";
*/
++m_num_conflicts;
++m_stats.m_conflicts;
TRACE("arith", tout << "scope: " << ctx().get_scope_level() << "\n"; display_evidence(tout, m_explanation); );
@ -3202,12 +3193,23 @@ public:
}
// SASSERT(validate_conflict());
dump_conflict();
ctx().set_conflict(
ctx().mk_justification(
ext_theory_conflict_justification(
get_id(), ctx().get_region(),
m_core.size(), m_core.c_ptr(),
m_eqs.size(), m_eqs.c_ptr(), m_params.size(), m_params.c_ptr())));
if (is_conflict) {
ctx().set_conflict(
ctx().mk_justification(
ext_theory_conflict_justification(
get_id(), ctx().get_region(),
m_core.size(), m_core.c_ptr(),
m_eqs.size(), m_eqs.c_ptr(), m_params.size(), m_params.c_ptr())));
}
else {
for (auto const& eq : m_eqs) {
m_core.push_back(th.mk_eq(eq.first->get_owner(), eq.second->get_owner(), false));
}
for (auto & c : m_core) {
c.neg();
}
ctx().mk_th_axiom(get_id(), m_core.size(), m_core.c_ptr());
}
}
justification * why_is_diseq(theory_var v1, theory_var v2) {