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wip - fixes to implied-eq proof hints

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This commit is contained in:
Nikolaj Bjorner 2022-10-11 09:54:00 +02:00
parent ffeb8f4572
commit 1b3684c9c1
3 changed files with 13 additions and 13 deletions
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10
src/sat/smt/arith_diagnostics.cpp
View file

@ -82,9 +82,9 @@ namespace arith {
if (m_nla) m_nla->collect_statistics(st);
}
void solver::explain_assumptions() {
void solver::explain_assumptions(lp::explanation const& e) {
unsigned i = 0;
for (auto const & ev : m_explanation) {
for (auto const & ev : e) {
++i;
auto idx = ev.ci();
if (UINT_MAX == idx)
@ -118,17 +118,17 @@ namespace arith {
if (!ctx.use_drat())
return nullptr;
m_arith_hint.set_type(ctx, ty);
explain_assumptions();
explain_assumptions(m_explanation);
if (lit != sat::null_literal)
m_arith_hint.add_lit(rational(1), ~lit);
return m_arith_hint.mk(ctx);
}
arith_proof_hint const* solver::explain_implied_eq(euf::enode* a, euf::enode* b) {
arith_proof_hint const* solver::explain_implied_eq(lp::explanation const& e, euf::enode* a, euf::enode* b) {
if (!ctx.use_drat())
return nullptr;
m_arith_hint.set_type(ctx, hint_type::implied_eq_h);
explain_assumptions();
explain_assumptions(e);
m_arith_hint.set_num_le(1); // TODO
m_arith_hint.add_diseq(a, b);
return m_arith_hint.mk(ctx);

4
src/sat/smt/arith_solver.cpp
View file

@ -320,7 +320,7 @@ namespace arith {
reset_evidence();
for (auto ev : e)
set_evidence(ev.ci());
auto* ex = explain_implied_eq(n1, n2);
auto* ex = explain_implied_eq(e, n1, n2);
auto* jst = euf::th_explain::propagate(*this, m_core, m_eqs, n1, n2, ex);
ctx.propagate(n1, n2, jst->to_index());
return true;
@ -744,7 +744,7 @@ namespace arith {
set_evidence(ci4);
enode* x = var2enode(v1);
enode* y = var2enode(v2);
auto* ex = explain_implied_eq(x, y);
auto* ex = explain_implied_eq(m_explanation, x, y);
auto* jst = euf::th_explain::propagate(*this, m_core, m_eqs, x, y, ex);
ctx.propagate(x, y, jst->to_index());
}

12
src/sat/smt/arith_solver.h
View file

@ -71,10 +71,10 @@ namespace arith {
unsigned m_lit_head = 0, m_lit_tail = 0, m_eq_head = 0, m_eq_tail = 0;
void reset() { m_lit_head = m_lit_tail; m_eq_head = m_eq_tail; }
void add(euf::enode* a, euf::enode* b, bool is_eq) {
if (m_eq_tail < m_eqs.size())
m_eqs[m_eq_tail] = std::tuple(a, b, is_eq);
else
m_eqs.push_back(std::tuple(a, b, is_eq));
if (m_eq_tail < m_eqs.size())
m_eqs[m_eq_tail] = { a, b, is_eq };
else
m_eqs.push_back({a, b, is_eq });
m_eq_tail++;
}
public:
@ -476,9 +476,9 @@ namespace arith {
arith_proof_hint_builder m_arith_hint;
arith_proof_hint const* explain(hint_type ty, sat::literal lit = sat::null_literal);
arith_proof_hint const* explain_implied_eq(euf::enode* a, euf::enode* b);
arith_proof_hint const* explain_implied_eq(lp::explanation const& e, euf::enode* a, euf::enode* b);
arith_proof_hint const* explain_trichotomy(sat::literal le, sat::literal ge, sat::literal eq);
void explain_assumptions();
void explain_assumptions(lp::explanation const& e);
public: