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z3/lib/proof_utils.h
Nikolaj Bjorner 9828a29b68 better proof mining for Farkas
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
2012-10-13 10:13:14 -07:00

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/*++
Copyright (c) 2012 Microsoft Corporation
Module Name:
proof_utils.h
Abstract:
Utilities for transforming proofs.
Author:
Nikolaj Bjorner (nbjorner) 2012-10-12.
Revision History:
--*/
#ifndef _PROOF_UTILS_H_
#define _PROOF_UTILS_H_
class proof_utils {
public:
/**
\brief reduce the set of hypotheses used in the proof.
*/
static void reduce_hypotheses(proof_ref& pr);
/**
\brief Check that a proof does not contain open hypotheses.
*/
static bool is_closed(ast_manager& m, proof* p);
/**
\brief Permute unit resolution rule with th-lemma
*/
static void permute_unit_resolution(proof_ref& pr);
};
#endif _PROOF_UTILS_H_