/usr/share/acl2-8.0dfsg/books/coi/util/ is in acl2-books-source 8.0dfsg-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/acl2-8.0dfsg/books/coi/util/cert.acl2
/usr/share/acl2-8.0dfsg/books/coi/util/clause-processor.lisp
/usr/share/acl2-8.0dfsg/books/coi/util/debug.lisp
/usr/share/acl2-8.0dfsg/books/coi/util/defbinding.lisp
/usr/share/acl2-8.0dfsg/books/coi/util/defdoc.lisp
/usr/share/acl2-8.0dfsg/books/coi/util/deffix.lisp
/usr/share/acl2-8.0dfsg/books/coi/util/defsubtype.lisp
/usr/share/acl2-8.0dfsg/books/coi/util/defun-support.lisp
/usr/share/acl2-8.0dfsg/books/coi/util/defun.lisp
/usr/share/acl2-8.0dfsg/books/coi/util/extra-info-test.lisp
/usr/share/acl2-8.0dfsg/books/coi/util/extra-info.lisp
/usr/share/acl2-8.0dfsg/books/coi/util/fixequiv.lisp
/usr/share/acl2-8.0dfsg/books/coi/util/good-rewrite-order.lisp
/usr/share/acl2-8.0dfsg/books/coi/util/ifdef.lisp
/usr/share/acl2-8.0dfsg/books/coi/util/iff.lisp
/usr/share/acl2-8.0dfsg/books/coi/util/ifixequiv.lisp
/usr/share/acl2-8.0dfsg/books/coi/util/implies.lisp
/usr/share/acl2-8.0dfsg/books/coi/util/in-conclusion.lisp
/usr/share/acl2-8.0dfsg/books/coi/util/ith.lisp
/usr/share/acl2-8.0dfsg/books/coi/util/mv-nth.lisp
/usr/share/acl2-8.0dfsg/books/coi/util/nfixequiv.lisp
/usr/share/acl2-8.0dfsg/books/coi/util/ordinal-order.lisp
/usr/share/acl2-8.0dfsg/books/coi/util/portcullis.acl2
/usr/share/acl2-8.0dfsg/books/coi/util/portcullis.lisp
/usr/share/acl2-8.0dfsg/books/coi/util/pseudo-translate.lisp
/usr/share/acl2-8.0dfsg/books/coi/util/recursion-support.lisp
/usr/share/acl2-8.0dfsg/books/coi/util/rewrite-equiv.lisp
/usr/share/acl2-8.0dfsg/books/coi/util/rule-sets-documentation.lisp
/usr/share/acl2-8.0dfsg/books/coi/util/rule-sets-support.lisp
/usr/share/acl2-8.0dfsg/books/coi/util/rule-sets.lisp
/usr/share/acl2-8.0dfsg/books/coi/util/skip-rewrite.lisp
/usr/share/acl2-8.0dfsg/books/coi/util/syntaxp.lisp
/usr/share/acl2-8.0dfsg/books/coi/util/table.lisp