/usr/share/acl2-7.1/books/centaur/aignet/ is in acl2-books 7.1-1.
This file is owned by root:root, with mode 0o755.
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/usr/share/acl2-7.1/books/centaur/aignet/aig-cnf.o
/usr/share/acl2-7.1/books/centaur/aignet/aig-sim.o
/usr/share/acl2-7.1/books/centaur/aignet/aiger.o
/usr/share/acl2-7.1/books/centaur/aignet/aignet-absstobj.o
/usr/share/acl2-7.1/books/centaur/aignet/aignet-exec-thms.o
/usr/share/acl2-7.1/books/centaur/aignet/aignet-exec.o
/usr/share/acl2-7.1/books/centaur/aignet/aignet-logic-interface.o
/usr/share/acl2-7.1/books/centaur/aignet/aignet-logic.o
/usr/share/acl2-7.1/books/centaur/aignet/arrays.o
/usr/share/acl2-7.1/books/centaur/aignet/bit-lemmas.o
/usr/share/acl2-7.1/books/centaur/aignet/cnf.o
/usr/share/acl2-7.1/books/centaur/aignet/construction.o
/usr/share/acl2-7.1/books/centaur/aignet/copying.o
/usr/share/acl2-7.1/books/centaur/aignet/eval.o
/usr/share/acl2-7.1/books/centaur/aignet/from-hons-aig-fast-raw.o
/usr/share/acl2-7.1/books/centaur/aignet/from-hons-aig-fast.o
/usr/share/acl2-7.1/books/centaur/aignet/from-hons-aig.o
/usr/share/acl2-7.1/books/centaur/aignet/litp.o
/usr/share/acl2-7.1/books/centaur/aignet/portcullis.o
/usr/share/acl2-7.1/books/centaur/aignet/prune.o
/usr/share/acl2-7.1/books/centaur/aignet/refcounts.o
/usr/share/acl2-7.1/books/centaur/aignet/semantics.o
/usr/share/acl2-7.1/books/centaur/aignet/snodes.o
/usr/share/acl2-7.1/books/centaur/aignet/to-hons-aig.o
/usr/share/acl2-7.1/books/centaur/aignet/types.o
/usr/share/acl2-7.1/books/centaur/aignet/vecsim.o