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Use refutation to compute ground sat answer

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This commit is contained in:
Arie Gurfinkel 2019-07-25 15:16:19 -04:00
parent 8a0d79251e
commit 92db639caf
4 changed files with 44 additions and 139 deletions
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9
src/muz/spacer/spacer_sat_answer.cpp
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@ -1,7 +1,7 @@
#include "muz/spacer/spacer_sat_answer.h"
#include "muz/base/dl_context.h"
#include "muz/base/dl_rule.h"
#include "ast/scoped_proof.h"
#include "smt/smt_solver.h"
namespace spacer {
@ -44,15 +44,16 @@ struct ground_sat_answer_op::frame {
pred_transformer &pt() {return m_pt;}
};
ground_sat_answer_op::ground_sat_answer_op(context &ctx) :
ground_sat_answer_op::ground_sat_answer_op(const context &ctx) :
m_ctx(ctx), m(m_ctx.get_ast_manager()), m_pm(m_ctx.get_manager()),
m_pinned(m) {
m_solver = mk_smt_solver(m, params_ref::get_empty(), symbol::null);
}
proof_ref ground_sat_answer_op::operator()(pred_transformer &query) {
// -- turn on proof mode so that proof constructing API in ast_manager work correctly
scoped_proof _pf(m);
m_solver = mk_smt_solver(m, params_ref::get_empty(), symbol::null);
vector<frame> todo, new_todo;
// -- find substitution for a query if query is not nullary