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user propagator

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2020-08-22 19:00:58 -07:00
parent 5e5ef50dbc
commit 96f10b8c1c
15 changed files with 219 additions and 127 deletions
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28
src/smt/user_propagator.cpp
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@ -23,11 +23,13 @@ Author:
using namespace smt;
user_propagator::user_propagator(context& ctx):
theory(ctx, ctx.get_manager().mk_family_id("user_propagator")),
m_qhead(0),
m_num_scopes(0)
theory(ctx, ctx.get_manager().mk_family_id("user_propagator"))
{}
user_propagator::~user_propagator() {
dealloc(m_api_context);
}
void user_propagator::force_push() {
for (; m_num_scopes > 0; --m_num_scopes) {
theory::push_scope_eh();
@ -36,9 +38,6 @@ void user_propagator::force_push() {
}
}
// TODO: check type of 'e', either Bool or Bit-vector.
//
unsigned user_propagator::add_expr(expr* e) {
force_push();
enode* n = ensure_enode(e);
@ -49,13 +48,13 @@ unsigned user_propagator::add_expr(expr* e) {
return v;
}
void user_propagator::propagate(unsigned sz, unsigned const* ids, expr* conseq) {
m_prop.push_back(prop_info(sz, ids, expr_ref(conseq, m)));
void user_propagator::propagate(unsigned num_fixed, unsigned const* fixed_ids, unsigned num_eqs, unsigned const* eq_lhs, unsigned const* eq_rhs, expr* conseq) {
m_prop.push_back(prop_info(num_fixed, fixed_ids, num_eqs, eq_lhs, eq_rhs, expr_ref(conseq, m)));
}
theory * user_propagator::mk_fresh(context * new_ctx) {
auto* th = alloc(user_propagator, *new_ctx);
void* ctx = m_fresh_eh(m_user_context);
void* ctx = m_fresh_eh(m_user_context, new_ctx->get_manager(), th->m_api_context);
th->add(ctx, m_push_eh, m_pop_eh, m_fresh_eh);
if ((bool)m_fixed_eh) th->register_fixed(m_fixed_eh);
if ((bool)m_final_eh) th->register_final(m_final_eh);
@ -110,9 +109,12 @@ void user_propagator::propagate() {
justification* js;
while (qhead < m_prop.size() && !ctx.inconsistent()) {
auto const& prop = m_prop[qhead];
m_lits.reset();
m_lits.reset();
eqs.reset();
for (unsigned id : prop.m_ids)
m_lits.append(m_id2justification[id]);
for (auto const& p : prop.m_eqs)
eqs.push_back(enode_pair(get_enode(p.first), get_enode(p.second)));
if (m.is_false(prop.m_conseq)) {
js = ctx.mk_justification(
ext_theory_conflict_justification(
@ -126,10 +128,16 @@ void user_propagator::propagate() {
get_id(), ctx.get_region(), m_lits.size(), m_lits.c_ptr(), eqs.size(), eqs.c_ptr(), lit));
ctx.assign(lit, js);
}
++m_stats.m_num_propagations;
++qhead;
}
ctx.push_trail(value_trail<context, unsigned>(m_qhead));
m_qhead = qhead;
}
void user_propagator::collect_statistics(::statistics & st) const {
st.update("user-propagations", m_stats.m_num_propagations);
st.update("user-watched", get_num_vars());
}