/usr/share/acl2-8.0dfsg/ is in acl2-source 8.0dfsg-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/acl2-8.0dfsg/TAGS
/usr/share/acl2-8.0dfsg/acl2-check.lisp
/usr/share/acl2-8.0dfsg/acl2-fns.lisp
/usr/share/acl2-8.0dfsg/acl2-init.lisp
/usr/share/acl2-8.0dfsg/acl2-proclaims.lisp
/usr/share/acl2-8.0dfsg/acl2.lisp
/usr/share/acl2-8.0dfsg/acl2r.lisp
/usr/share/acl2-8.0dfsg/akcl-acl2-trace.lisp
/usr/share/acl2-8.0dfsg/allegro-acl2-trace.lisp
/usr/share/acl2-8.0dfsg/apply-constraints.lisp
/usr/share/acl2-8.0dfsg/apply-prim.lisp
/usr/share/acl2-8.0dfsg/apply-raw.lisp
/usr/share/acl2-8.0dfsg/apply.lisp
/usr/share/acl2-8.0dfsg/axioms.lisp
/usr/share/acl2-8.0dfsg/basis-a.lisp
/usr/share/acl2-8.0dfsg/basis-b.lisp
/usr/share/acl2-8.0dfsg/bdd.lisp
/usr/share/acl2-8.0dfsg/boot-strap-pass-2-a.lisp
/usr/share/acl2-8.0dfsg/boot-strap-pass-2-b.lisp
/usr/share/acl2-8.0dfsg/defpkgs.lisp
/usr/share/acl2-8.0dfsg/defthm.lisp
/usr/share/acl2-8.0dfsg/defuns.lisp
/usr/share/acl2-8.0dfsg/doc.lisp
/usr/share/acl2-8.0dfsg/futures-raw.lisp
/usr/share/acl2-8.0dfsg/history-management.lisp
/usr/share/acl2-8.0dfsg/hons-raw.lisp
/usr/share/acl2-8.0dfsg/hons.lisp
/usr/share/acl2-8.0dfsg/induct.lisp
/usr/share/acl2-8.0dfsg/init.lisp
/usr/share/acl2-8.0dfsg/interface-raw.lisp
/usr/share/acl2-8.0dfsg/ld.lisp
/usr/share/acl2-8.0dfsg/linear-a.lisp
/usr/share/acl2-8.0dfsg/linear-b.lisp
/usr/share/acl2-8.0dfsg/mcl-acl2-startup.lisp
/usr/share/acl2-8.0dfsg/memoize-raw.lisp
/usr/share/acl2-8.0dfsg/memoize.lisp
/usr/share/acl2-8.0dfsg/multi-threading-raw.lisp
/usr/share/acl2-8.0dfsg/non-linear.lisp
/usr/share/acl2-8.0dfsg/openmcl-acl2-trace.lisp
/usr/share/acl2-8.0dfsg/other-events.lisp
/usr/share/acl2-8.0dfsg/other-processes.lisp
/usr/share/acl2-8.0dfsg/parallel-raw.lisp
/usr/share/acl2-8.0dfsg/parallel.lisp
/usr/share/acl2-8.0dfsg/proof-builder-a.lisp
/usr/share/acl2-8.0dfsg/proof-builder-b.lisp
/usr/share/acl2-8.0dfsg/proof-builder-pkg.lisp
/usr/share/acl2-8.0dfsg/prove.lisp
/usr/share/acl2-8.0dfsg/rewrite.lisp
/usr/share/acl2-8.0dfsg/serialize-raw.lisp
/usr/share/acl2-8.0dfsg/serialize.lisp
/usr/share/acl2-8.0dfsg/simplify.lisp
/usr/share/acl2-8.0dfsg/tau.lisp
/usr/share/acl2-8.0dfsg/translate.lisp
/usr/share/acl2-8.0dfsg/type-set-a.lisp
/usr/share/acl2-8.0dfsg/type-set-b.lisp