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; Milawa - A Reflective Theorem Prover
; Copyright (C) 2005-2009 Kookamara LLC
;
; Contact:
;
; Kookamara LLC
; 11410 Windermere Meadows
; Austin, TX 78759, USA
; http://www.kookamara.com/
;
; License: (An MIT/X11-style license)
;
; Permission is hereby granted, free of charge, to any person obtaining a
; copy of this software and associated documentation files (the "Software"),
; to deal in the Software without restriction, including without limitation
; the rights to use, copy, modify, merge, publish, distribute, sublicense,
; and/or sell copies of the Software, and to permit persons to whom the
; Software is furnished to do so, subject to the following conditions:
;
; The above copyright notice and this permission notice shall be included in
; all copies or substantial portions of the Software.
;
; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
; IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
; FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
; AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
; LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
; FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
; DEALINGS IN THE SOFTWARE.
;
; Original author: Jared Davis <jared@kookamara.com>
(in-package "MILAWA")
(include-book "colors")
(include-book "skeletonp")
(set-verify-guards-eagerness 2)
(set-case-split-limitations nil)
(set-well-founded-relation ord<)
(set-measure-function rank)
(defund tactic.cleanup-okp (x)
(declare (xargs :guard (tactic.skeletonp x)))
(let ((goals (tactic.skeleton->goals x))
(tacname (tactic.skeleton->tacname x))
(extras (tactic.skeleton->extras x))
(history (tactic.skeleton->history x)))
(and (equal tacname 'cleanup)
(not extras)
(let* ((old-goals (tactic.skeleton->goals history))
(cleanup (clause.fast-clean-clauses old-goals))
(unprovablep (first cleanup))
(progressp (second cleanup))
(new-goals (third cleanup)))
(and (not unprovablep)
progressp
(equal goals new-goals))))))
(defthm booleanp-of-tactic.cleanup-okp
(equal (booleanp (tactic.cleanup-okp x))
t)
:hints(("Goal" :in-theory (e/d (tactic.cleanup-okp)
((:executable-counterpart acl2::force))))))
(defund tactic.cleanup-tac (x warnp)
(declare (xargs :guard (and (tactic.skeletonp x)
(booleanp warnp))))
(let* ((goals (tactic.skeleton->goals x))
(cleanup (clause.fast-clean-clauses goals))
(unprovablep (first cleanup))
(progressp (second cleanup))
(new-goals (third cleanup)))
(cond (unprovablep
;; We print this out even if the warnings are off.
(ACL2::cw "~s0Cleanup-tac failure~s1: unprovable clause discovered.~%" *red* *black*))
((not progressp)
(and warnp
(ACL2::cw "~s0Cleanup-tac failure~s1: the goal is already clean.~%" *red* *black*)))
(t
(tactic.extend-skeleton new-goals 'cleanup nil x)))))
(defthm forcing-tactic.skeletonp-of-tactic.cleanup-tac
(implies (and (tactic.cleanup-tac x warnp)
(force (tactic.skeletonp x)))
(equal (tactic.skeletonp (tactic.cleanup-tac x warnp))
t))
:hints(("Goal" :in-theory (enable tactic.cleanup-tac))))
(defthm forcing-tactic.cleanup-okp-of-tactic.cleanup-tac
(implies (and (tactic.cleanup-tac x warnp)
(force (tactic.skeletonp x)))
(equal (tactic.cleanup-okp (tactic.cleanup-tac x warnp))
t))
:hints(("Goal" :in-theory (enable tactic.cleanup-tac tactic.cleanup-okp))))
(defund tactic.cleanup-compile (x proofs)
(declare (xargs :guard (and (tactic.skeletonp x)
(tactic.cleanup-okp x)
(logic.appeal-listp proofs)
(equal (clause.clause-list-formulas (tactic.skeleton->goals x))
(logic.strip-conclusions proofs)))
:verify-guards nil))
(let* ((history (tactic.skeleton->history x))
(old-goals (tactic.skeleton->goals history)))
(clause.clean-clauses-bldr old-goals proofs)))
(defobligations tactic.cleanup-compile
(clause.clean-clauses-bldr))
(encapsulate
()
(local (in-theory (enable tactic.cleanup-okp tactic.cleanup-compile)))
(verify-guards tactic.cleanup-compile)
(defthm forcing-logic.appeal-listp-of-tactic.cleanup-compile
(implies (force (and (tactic.skeletonp x)
(tactic.cleanup-okp x)
(logic.appeal-listp proofs)
(equal (clause.clause-list-formulas (tactic.skeleton->goals x))
(logic.strip-conclusions proofs))))
(equal (logic.appeal-listp (tactic.cleanup-compile x proofs))
t)))
(defthm forcing-logic.strip-conclusions-of-tactic.cleanup-compile
(implies (force (and (tactic.skeletonp x)
(tactic.cleanup-okp x)
(logic.appeal-listp proofs)
(equal (clause.clause-list-formulas (tactic.skeleton->goals x))
(logic.strip-conclusions proofs))))
(equal (logic.strip-conclusions (tactic.cleanup-compile x proofs))
(clause.clause-list-formulas
(tactic.skeleton->goals (tactic.skeleton->history x))))))
(defthm@ forcing-logic.proof-listp-of-tactic.cleanup-compile
(implies (force (and (tactic.skeletonp x)
(tactic.cleanup-okp x)
(logic.appeal-listp proofs)
(equal (clause.clause-list-formulas (tactic.skeleton->goals x))
(logic.strip-conclusions proofs))
;; ---
(tactic.skeleton-atblp x atbl)
(equal (cdr (lookup 'not atbl)) 1)
(equal (cdr (lookup 'if atbl)) 3)
(equal (cdr (lookup 'equal atbl)) 2)
(equal (cdr (lookup 'iff atbl)) 2)
(logic.proof-listp proofs axioms thms atbl)
(@obligations tactic.cleanup-compile)
))
(equal (logic.proof-listp (tactic.cleanup-compile x proofs) axioms thms atbl)
t))))
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