/usr/share/acl2-7.2dfsg/books/system/too-many-ifs.acl2 is in acl2-books-source 7.2dfsg-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 | ; We need the following for provisional certification, so that ACL2
; can read symbols flag::SYM in too-many-ifs.acl2x at the start of
; the Pcertify step.
(in-package "ACL2")
(include-book "tools/flag" :dir :system)
(certify-book "too-many-ifs" ? t)
|