/usr/share/acl2-7.2dfsg/saved_acl2 is in acl2 7.2dfsg-3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/acl2-7.2dfsg/../../lib/acl2-7.2dfsg/saved_acl2
/usr/share/acl2-7.2dfsg/../../lib/acl2-7.2dfsg/saved_acl2