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fix bug in proof generation for PDR, add more features for handling quantifiers

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2012-12-02 15:33:18 -08:00
parent 2d1a6bf270
commit a813c384a6
8 changed files with 356 additions and 40 deletions
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21
src/muz_qe/pdr_util.cpp
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@ -386,13 +386,12 @@ namespace pdr {
for_each_expr(*this, m_visited, tocollect[i]);
}
unsigned sz = m_model->get_num_constants();
expr_ref e(m), eq(m);
expr_ref e(m), eq(m), val(m);
expr_ref_vector model(m);
for (unsigned i = 0; i < sz; i++) {
func_decl * d = m_model->get_constant(i);
expr* val = m_model->get_const_interp(d);
e = m.mk_const(d);
e = m.mk_const(m_model->get_constant(i));
if (m_visited.is_marked(e)) {
val = eval(m_model, e);
eq = m.mk_eq(e, val);
model.push_back(eq);
}
@ -923,6 +922,20 @@ namespace pdr {
return !has_x;
}
expr_ref model_evaluator::eval(model_ref& model, func_decl* d) {
SASSERT(d->get_arity() == 0);
expr_ref result(m);
if (m_array.is_array(d->get_range())) {
expr_ref e(m);
e = m.mk_const(d);
result = eval(model, e);
}
else {
result = model->get_const_interp(d);
}
return result;
}
expr_ref model_evaluator::eval(model_ref& model, expr* e) {
expr_ref result(m);
m_model = model;