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redo purification

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2020-10-29 11:06:31 -07:00
parent da0e140e1c
commit 2e684d58d2
5 changed files with 68 additions and 88 deletions
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21
src/qe/mbp/mbp_plugin.h
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@ -35,17 +35,6 @@ namespace mbp {
def(const expr_ref& v, expr_ref& t): var(v), term(t) {}
};
/***
* An EUF inverter provides two services:
* 1. It inverts an uninterpreted function application f(s1,s2) with 'value' to a ground term evaluating to the same
* 2. It adds constraints for arguments to s_i with 'value' to be within the bounds of the model value.
*/
class euf_inverter {
public:
virtual expr* invert_app(app* t, expr* value) = 0;
virtual void invert_arg(app* t, unsigned i, expr* value, expr_ref_vector& lits) = 0;
};
class project_plugin {
ast_manager& m;
expr_mark m_visited;
@ -67,9 +56,6 @@ namespace mbp {
void mark_non_ground(expr* e);
expr* purify(euf_inverter& inv, model_evaluator& eval, expr* e, expr_ref_vector& lits);
void purify_app(euf_inverter& inv, model_evaluator& eval, app* t, expr_ref_vector& lits);
public:
project_plugin(ast_manager& m) :m(m), m_cache(m), m_args(m), m_pure_eqs(m) {}
virtual ~project_plugin() {}
@ -103,12 +89,6 @@ namespace mbp {
*/
void extract_literals(model& model, app_ref_vector const& vars, expr_ref_vector& fmls);
/*
* Purify literals into linear inequalities or constraints without arithmetic variables.
*/
void purify(euf_inverter& inv, model& model, app_ref_vector const& vars, expr_ref_vector& fmls);
static expr_ref pick_equality(ast_manager& m, model& model, expr* t);
static void erase(expr_ref_vector& lits, unsigned& i);
@ -125,6 +105,7 @@ namespace mbp {
}
bool is_non_ground(expr* t) const { return m_non_ground.is_marked(t); }
};
}