/usr/share/acl2-7.1/books/arithmetic-3/bind-free/ is in acl2-books-source 7.1-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/acl2-7.1/books/arithmetic-3/bind-free/arithmetic-theory.lisp
/usr/share/acl2-7.1/books/arithmetic-3/bind-free/banner.lisp
/usr/share/acl2-7.1/books/arithmetic-3/bind-free/basic-helper.lisp
/usr/share/acl2-7.1/books/arithmetic-3/bind-free/basic.lisp
/usr/share/acl2-7.1/books/arithmetic-3/bind-free/building-blocks.lisp
/usr/share/acl2-7.1/books/arithmetic-3/bind-free/collect.lisp
/usr/share/acl2-7.1/books/arithmetic-3/bind-free/common.lisp
/usr/share/acl2-7.1/books/arithmetic-3/bind-free/default-hint.lisp
/usr/share/acl2-7.1/books/arithmetic-3/bind-free/integerp-meta.lisp
/usr/share/acl2-7.1/books/arithmetic-3/bind-free/integerp.lisp
/usr/share/acl2-7.1/books/arithmetic-3/bind-free/mini-theories-helper.lisp
/usr/share/acl2-7.1/books/arithmetic-3/bind-free/mini-theories.lisp
/usr/share/acl2-7.1/books/arithmetic-3/bind-free/normalize.lisp
/usr/share/acl2-7.1/books/arithmetic-3/bind-free/numerator-and-denominator.lisp
/usr/share/acl2-7.1/books/arithmetic-3/bind-free/remove-weak-inequalities.lisp
/usr/share/acl2-7.1/books/arithmetic-3/bind-free/simplify-helper.lisp
/usr/share/acl2-7.1/books/arithmetic-3/bind-free/simplify.lisp
/usr/share/acl2-7.1/books/arithmetic-3/bind-free/top.lisp