/usr/share/acl2-6.3/books/coi/util/ is in acl2-books-certs 6.3-5.
This file is owned by root:root, with mode 0o755.
..
/usr/share/acl2-6.3/books/coi/util/clause-processor.cert
/usr/share/acl2-6.3/books/coi/util/debug.cert
/usr/share/acl2-6.3/books/coi/util/defbinding.cert
/usr/share/acl2-6.3/books/coi/util/defdoc.cert
/usr/share/acl2-6.3/books/coi/util/deffix.cert
/usr/share/acl2-6.3/books/coi/util/defsubtype.cert
/usr/share/acl2-6.3/books/coi/util/defun-support.cert
/usr/share/acl2-6.3/books/coi/util/defun.cert
/usr/share/acl2-6.3/books/coi/util/extra-info-test.cert
/usr/share/acl2-6.3/books/coi/util/extra-info.cert
/usr/share/acl2-6.3/books/coi/util/fixequiv.cert
/usr/share/acl2-6.3/books/coi/util/good-rewrite-order.cert
/usr/share/acl2-6.3/books/coi/util/ifdef.cert
/usr/share/acl2-6.3/books/coi/util/iff.cert
/usr/share/acl2-6.3/books/coi/util/ifixequiv.cert
/usr/share/acl2-6.3/books/coi/util/implies.cert
/usr/share/acl2-6.3/books/coi/util/in-conclusion.cert
/usr/share/acl2-6.3/books/coi/util/ith.cert
/usr/share/acl2-6.3/books/coi/util/mv-nth.cert
/usr/share/acl2-6.3/books/coi/util/nfixequiv.cert
/usr/share/acl2-6.3/books/coi/util/ordinal-order.cert
/usr/share/acl2-6.3/books/coi/util/pseudo-translate.cert
/usr/share/acl2-6.3/books/coi/util/recursion-support.cert
/usr/share/acl2-6.3/books/coi/util/rewrite-equiv.cert
/usr/share/acl2-6.3/books/coi/util/rule-sets-documentation.cert
/usr/share/acl2-6.3/books/coi/util/rule-sets-support.cert
/usr/share/acl2-6.3/books/coi/util/rule-sets.cert
/usr/share/acl2-6.3/books/coi/util/skip-rewrite.cert
/usr/share/acl2-6.3/books/coi/util/syntaxp.cert
/usr/share/acl2-6.3/books/coi/util/table.cert