/usr/share/acl2-8.0dfsg/saved_acl2 is in acl2 8.0dfsg-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/acl2-8.0dfsg/../../lib/acl2-8.0dfsg/saved_acl2
/usr/share/acl2-8.0dfsg/../../lib/acl2-8.0dfsg/saved_acl2