This file is indexed.

/usr/share/acl2-6.3/proof-checker-pkg.lisp is in acl2-source 6.3-5.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

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; ACL2 Version 6.3 -- A Computational Logic for Applicative Common Lisp
; Copyright (C) 2013, Regents of the University of Texas

; This version of ACL2 is a descendent of ACL2 Version 1.9, Copyright
; (C) 1997 Computational Logic, Inc.  See the documentation topic NOTE-2-0.

; This program is free software; you can redistribute it and/or modify
; it under the terms of the LICENSE file distributed with ACL2.

; This program is distributed in the hope that it will be useful,
; but WITHOUT ANY WARRANTY; without even the implied warranty of
; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
; LICENSE for more details.

; Written by:  Matt Kaufmann               and J Strother Moore
; email:       Kaufmann@cs.utexas.edu      and Moore@cs.utexas.edu
; Department of Computer Science
; University of Texas at Austin
; Austin, TX 78701 U.S.A.

(in-package "ACL2")

(defpkg "ACL2-PC" nil)