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remove trc

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2019-04-17 10:47:46 -07:00
parent 502b29c424
commit 86b98e3477
9 changed files with 28 additions and 71 deletions
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44
src/smt/theory_special_relations.cpp
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@ -322,9 +322,6 @@ namespace smt {
// we need reachability in the R graph not R* graph
theory_var r1 = get_representative(a.v1());
theory_var r2 = get_representative(a.v2());
if (r.m_property == sr_trc && r1 == r2) {
continue;
}
if (r_graph.can_reach(r1, r2)) {
TRACE("special_relations",
tout << a.v1() << ": " << mk_pp(arg1, m) << " -> "
@ -397,13 +394,6 @@ namespace smt {
return final_check_po(r);
}
lbool theory_special_relations::final_check_trc(relation& r) {
//
// reflexivity is enforced from propagation.
// enforce transitivity.
//
return final_check_tc(r);
}
lbool theory_special_relations::final_check_to(relation& r) {
uint_set visited, target;
@ -510,9 +500,6 @@ namespace smt {
case sr_tc:
res = final_check_tc(r);
break;
case sr_trc:
res = final_check_trc(r);
break;
default:
UNREACHABLE();
res = l_undef;
@ -525,7 +512,6 @@ namespace smt {
bool theory_special_relations::extract_equalities(relation& r) {
switch (r.m_property) {
case sr_tc:
case sr_trc:
return false;
default:
break;
@ -593,30 +579,6 @@ namespace smt {
return res;
}
/**
\brief ensure that reflexivity is enforce for Transitive Reflexive closures
!TRC(R)xy => x != y
*/
lbool theory_special_relations::propagate_trc(atom& a) {
lbool res = l_true;
if (a.phase()) {
VERIFY(a.enable());
relation& r = a.get_relation();
r.m_uf.merge(a.v1(), a.v2());
}
else {
literal lit(a.var(), true);
context& ctx = get_context();
expr* arg1 = get_expr(a.v1());
expr* arg2 = get_expr(a.v2());
literal consequent = ~mk_eq(arg1, arg2, false);
justification* j = ctx.mk_justification(theory_propagation_justification(get_id(), ctx.get_region(), 1, &lit, consequent));
ctx.assign(consequent, j);
res = l_false;
}
return res;
}
lbool theory_special_relations::propagate_tc(atom& a) {
if (a.phase()) {
VERIFY(a.enable());
@ -670,9 +632,6 @@ namespace smt {
res = propagate_po(a);
break;
case sr_tc:
res = propagate_trc(a);
break;
case sr_trc:
res = propagate_tc(a);
break;
default:
@ -1165,9 +1124,6 @@ namespace smt {
case sr_tc:
init_model_po(*kv.m_value, m, true);
break;
case sr_trc:
init_model_po(*kv.m_value, m, true);
break;
default:
// other 28 combinations of 0x1F
NOT_IMPLEMENTED_YET();