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adding preferred sat, currently disabled, to wmax. Fixing issue #815

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2016-11-30 09:52:05 -08:00
parent 441dbbb94b
commit 024082a45f
13 changed files with 887 additions and 405 deletions
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27
src/smt/smt_context.h
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@ -200,7 +200,20 @@ namespace smt {
model_ref m_model;
std::string m_unknown;
void mk_proto_model(lbool r);
struct scoped_mk_model;
struct scoped_mk_model {
context & m_ctx;
scoped_mk_model(context & ctx):m_ctx(ctx) {
m_ctx.m_proto_model = 0;
m_ctx.m_model = 0;
}
~scoped_mk_model() {
if (m_ctx.m_proto_model.get() != 0) {
m_ctx.m_model = m_ctx.m_proto_model->mk_model();
m_ctx.m_proto_model = 0; // proto_model is not needed anymore.
}
}
};
// -----------------------------------
//
@ -234,7 +247,6 @@ namespace smt {
return m_params;
}
bool get_cancel_flag() { return !m_manager.limit().inc(); }
region & get_region() {
@ -1056,6 +1068,8 @@ namespace smt {
void inc_limits();
bool restart(lbool& status, unsigned curr_lvl);
void tick(unsigned & counter) const;
lbool bounded_search();
@ -1367,6 +1381,13 @@ namespace smt {
void validate_consequences(expr_ref_vector const& assumptions, expr_ref_vector const& vars,
expr_ref_vector const& conseq, expr_ref_vector const& unfixed);
void justify(literal lit, index_set& s);
void extract_cores(expr_ref_vector const& asms, vector<expr_ref_vector>& cores, unsigned& min_core_size);
void preferred_sat(literal_vector& literals);
void display_partial_assignment(std::ostream& out, expr_ref_vector const& asms, unsigned min_core_size);
public:
context(ast_manager & m, smt_params & fp, params_ref const & p = params_ref());
@ -1410,6 +1431,8 @@ namespace smt {
lbool get_consequences(expr_ref_vector const& assumptions, expr_ref_vector const& vars, expr_ref_vector& conseq, expr_ref_vector& unfixed);
lbool find_mutexes(expr_ref_vector const& vars, vector<expr_ref_vector>& mutexes);
lbool preferred_sat(expr_ref_vector const& asms, vector<expr_ref_vector>& cores);
lbool setup_and_check(bool reset_cancel = true);