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68 lines
1.3 KiB
C++
68 lines
1.3 KiB
C++
/*++
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Copyright (c) 2012 Microsoft Corporation
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Module Name:
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horn_subsume_model_converter.h
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Abstract:
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Model converter for redundant Horn clauses.
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Author:
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Nikolaj Bjorner (nbjorner) 2012-9-16
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Revision History:
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Notes:
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Subsumption transformation (remove Horn clause):
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P(x) :- Body(x,y) Rules
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----------------------------
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Rules
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Model converter:
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P(x) := P(x) or (exists y. Body(x,y))
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--*/
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#ifndef _HORN_SUBSUME_MODEL_CONVERTER_H_
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#define _HORN_SUBSUME_MODEL_CONVERTER_H_
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#include "model_converter.h"
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class horn_subsume_model_converter : public model_converter {
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ast_manager& m;
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func_decl_ref_vector m_funcs;
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expr_ref_vector m_bodies;
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public:
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horn_subsume_model_converter(ast_manager& m): m(m), m_funcs(m), m_bodies(m) {}
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bool mk_horn(expr* clause, func_decl_ref& pred, expr_ref& body) const;
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bool mk_horn(app* head, expr* body, func_decl_ref& pred, expr_ref& body_res) const;
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void insert(app* head, expr* body);
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void insert(app* head, unsigned sz, expr* const* body);
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void insert(func_decl* p, expr* body) { m_funcs.push_back(p); m_bodies.push_back(body); }
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virtual void operator()(model_ref& m);
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virtual model_converter * translate(ast_translation & translator);
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ast_manager& get_manager() { return m; }
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};
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#endif
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