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generalize model finder code to be independent of conjunction elimination

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2017-12-13 13:48:24 -08:00
parent 2e186633ee
commit 5a479fca76
1 changed files with 5 additions and 6 deletions
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11
src/smt/smt_model_finder.cpp
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@ -2272,10 +2272,9 @@ namespace smt {
process_literal(atom, pol == NEG); process_literal(atom, pol == NEG);
} }
void process_or(app * n, polarity p) { void process_and_or(app * n, polarity p) {
unsigned num_args = n->get_num_args(); for (expr* arg : *n)
for (unsigned i = 0; i < num_args; i++) visit_formula(arg, p);
visit_formula(n->get_arg(i), p);
} }
void process_ite(app * n, polarity p) { void process_ite(app * n, polarity p) {
@ -2306,13 +2305,13 @@ namespace smt {
if (is_app(curr)) { if (is_app(curr)) {
if (to_app(curr)->get_family_id() == m_manager.get_basic_family_id() && m_manager.is_bool(curr)) { if (to_app(curr)->get_family_id() == m_manager.get_basic_family_id() && m_manager.is_bool(curr)) {
switch (static_cast<basic_op_kind>(to_app(curr)->get_decl_kind())) { switch (static_cast<basic_op_kind>(to_app(curr)->get_decl_kind())) {
case OP_AND:
case OP_IMPLIES: case OP_IMPLIES:
case OP_XOR: case OP_XOR:
UNREACHABLE(); // simplifier eliminated ANDs, IMPLIEs, and XORs UNREACHABLE(); // simplifier eliminated ANDs, IMPLIEs, and XORs
break; break;
case OP_OR: case OP_OR:
process_or(to_app(curr), pol); case OP_AND:
process_and_or(to_app(curr), pol);
break; break;
case OP_NOT: case OP_NOT:
visit_formula(to_app(curr)->get_arg(0), neg(pol)); visit_formula(to_app(curr)->get_arg(0), neg(pol));