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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
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Leonardo de Moura 2012-10-21 13:32:12 -07:00
parent 4722fdfca5
commit add684d8e9
377 changed files with 204 additions and 62 deletions
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lib/horn_subsume_model_converter.h
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/*++
Copyright (c) 2012 Microsoft Corporation
Module Name:
horn_subsume_model_converter.h
Abstract:
Model converter for redundant Horn clauses.
Author:
Nikolaj Bjorner (nbjorner) 2012-9-16
Revision History:
Notes:
Subsumption transformation (remove Horn clause):
P(x) :- Body(x,y) Rules
----------------------------
Rules
Model converter:
P(x) := P(x) or (exists y. Body(x,y))
--*/
#ifndef _HORN_SUBSUME_MODEL_CONVERTER_H_
#define _HORN_SUBSUME_MODEL_CONVERTER_H_
#include "model_converter.h"
class horn_subsume_model_converter : public model_converter {
ast_manager& m;
func_decl_ref_vector m_funcs;
expr_ref_vector m_bodies;
void add_default_false_interpretation(expr* e, model_ref& md);
struct add_default_proc {
ast_manager& m;
model_ref& m_md;
add_default_proc(ast_manager& m, model_ref& md): m(m), m_md(md) {}
void operator()(app* n);
void operator()(expr* n) {}
};
public:
horn_subsume_model_converter(ast_manager& m): m(m), m_funcs(m), m_bodies(m) {}
bool mk_horn(expr* clause, func_decl_ref& pred, expr_ref& body) const;
bool mk_horn(app* head, expr* body, func_decl_ref& pred, expr_ref& body_res) const;
void insert(app* head, expr* body);
void insert(app* head, unsigned sz, expr* const* body);
void insert(func_decl* p, expr* body) { m_funcs.push_back(p); m_bodies.push_back(body); }
virtual void operator()(model_ref& m);
virtual model_converter * translate(ast_translation & translator);
ast_manager& get_manager() { return m; }
};
#endif