/usr/share/acl2-7.1/books/projects/taspi/ is in acl2-books 7.1-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/acl2-7.1/books/projects/taspi/code/
/usr/share/acl2-7.1/books/projects/taspi/code/brlens/
/usr/share/acl2-7.1/books/projects/taspi/code/brlens/brlens.o
/usr/share/acl2-7.1/books/projects/taspi/code/brlens/trees-with-brlens.o
/usr/share/acl2-7.1/books/projects/taspi/code/build/
/usr/share/acl2-7.1/books/projects/taspi/code/build/build-term-guards.o
/usr/share/acl2-7.1/books/projects/taspi/code/build/build-term.o
/usr/share/acl2-7.1/books/projects/taspi/code/fringes/
/usr/share/acl2-7.1/books/projects/taspi/code/fringes/fringes-guards.o
/usr/share/acl2-7.1/books/projects/taspi/code/fringes/fringes-props.o
/usr/share/acl2-7.1/books/projects/taspi/code/fringes/fringes.o
/usr/share/acl2-7.1/books/projects/taspi/code/gen-helper/
/usr/share/acl2-7.1/books/projects/taspi/code/gen-helper/bdd-functions.o
/usr/share/acl2-7.1/books/projects/taspi/code/gen-helper/extra.o
/usr/share/acl2-7.1/books/projects/taspi/code/gen-helper/fast-lists.o
/usr/share/acl2-7.1/books/projects/taspi/code/gen-helper/sets.o
/usr/share/acl2-7.1/books/projects/taspi/code/gen-helper/top.o
/usr/share/acl2-7.1/books/projects/taspi/code/gen-trees/
/usr/share/acl2-7.1/books/projects/taspi/code/gen-trees/app-rev-lists.o
/usr/share/acl2-7.1/books/projects/taspi/code/gen-trees/btrees-bdds-sets.o
/usr/share/acl2-7.1/books/projects/taspi/code/gen-trees/btrees-bdds.o
/usr/share/acl2-7.1/books/projects/taspi/code/gen-trees/btrees.o
/usr/share/acl2-7.1/books/projects/taspi/code/gen-trees/sets-lists-trees.o
/usr/share/acl2-7.1/books/projects/taspi/code/gen-trees/top.o
/usr/share/acl2-7.1/books/projects/taspi/code/gen-trees/tree-predicates.o
/usr/share/acl2-7.1/books/projects/taspi/code/replete/
/usr/share/acl2-7.1/books/projects/taspi/code/replete/replete-guards.o
/usr/share/acl2-7.1/books/projects/taspi/code/replete/replete-helper.o
/usr/share/acl2-7.1/books/projects/taspi/code/replete/replete.o
/usr/share/acl2-7.1/books/projects/taspi/code/sequences/
/usr/share/acl2-7.1/books/projects/taspi/code/sequences/align.o
/usr/share/acl2-7.1/books/projects/taspi/code/sequences/p-inform.o
/usr/share/acl2-7.1/books/projects/taspi/code/sequences/seqs.o
/usr/share/acl2-7.1/books/projects/taspi/code/tree-manip/
/usr/share/acl2-7.1/books/projects/taspi/code/tree-manip/insertion-based-sort.o
/usr/share/acl2-7.1/books/projects/taspi/code/tree-manip/merge-based-sort.o
/usr/share/acl2-7.1/books/projects/taspi/code/tree-manip/mv-root.o
/usr/share/acl2-7.1/books/projects/taspi/code/tree-manip/quicksort.o
/usr/share/acl2-7.1/books/projects/taspi/code/tree-manip/sort-help.o
/usr/share/acl2-7.1/books/projects/taspi/code/tree-manip/top.o
/usr/share/acl2-7.1/books/projects/taspi/database/
/usr/share/acl2-7.1/books/projects/taspi/database/db-from-list.o
/usr/share/acl2-7.1/books/projects/taspi/database/db.o
/usr/share/acl2-7.1/books/projects/taspi/database/entry.o
/usr/share/acl2-7.1/books/projects/taspi/database/filters.o
/usr/share/acl2-7.1/books/projects/taspi/database/props.o
/usr/share/acl2-7.1/books/projects/taspi/proofs/
/usr/share/acl2-7.1/books/projects/taspi/proofs/fringes-taspi.o
/usr/share/acl2-7.1/books/projects/taspi/proofs/omerge-good-order.o
/usr/share/acl2-7.1/books/projects/taspi/proofs/sets.o
/usr/share/acl2-7.1/books/projects/taspi/sets-input/
/usr/share/acl2-7.1/books/projects/taspi/sets-input/consensus.o
/usr/share/acl2-7.1/books/projects/taspi/sets-input/greedy.o
/usr/share/acl2-7.1/books/projects/taspi/sets-input/mast.o
/usr/share/acl2-7.1/books/projects/taspi/sets-input/mct.o
/usr/share/acl2-7.1/books/projects/taspi/sets-input/multipolar-loose.o
/usr/share/acl2-7.1/books/projects/taspi/sets-input/top.o
/usr/share/acl2-7.1/books/projects/taspi/sets-input/tree-compat.o
/usr/share/acl2-7.1/books/projects/taspi/sets-input/tree-support-in-set.o
/usr/share/acl2-7.1/books/projects/taspi/single-input/
/usr/share/acl2-7.1/books/projects/taspi/single-input/taxa-based.o
/usr/share/acl2-7.1/books/projects/taspi/single-input/tree-stats.o
/usr/share/acl2-7.1/books/projects/taspi/taspi-xdoc.o
/usr/share/acl2-7.1/books/projects/taspi/tree-distance/
/usr/share/acl2-7.1/books/projects/taspi/tree-distance/rf.o
/usr/share/acl2-7.1/books/projects/taspi/tree-distance/symm-diff.o
/usr/share/acl2-7.1/books/projects/taspi/tree-generation/
/usr/share/acl2-7.1/books/projects/taspi/tree-generation/branch-and-bound/
/usr/share/acl2-7.1/books/projects/taspi/tree-generation/branch-and-bound/bandb.o
/usr/share/acl2-7.1/books/projects/taspi/tree-generation/distance-based/
/usr/share/acl2-7.1/books/projects/taspi/tree-generation/distance-based/naive-quartet-method.o
/usr/share/acl2-7.1/books/projects/taspi/tree-generation/heuristics/
/usr/share/acl2-7.1/books/projects/taspi/tree-generation/heuristics/do-search.o
/usr/share/acl2-7.1/books/projects/taspi/tree-generation/heuristics/spr.o
/usr/share/acl2-7.1/books/projects/taspi/tree-generation/heuristics/tbr.o
/usr/share/acl2-7.1/books/projects/taspi/tree-generation/tree-gen-helper/
/usr/share/acl2-7.1/books/projects/taspi/tree-generation/tree-gen-helper/basics.o
/usr/share/acl2-7.1/books/projects/taspi/tree-score/
/usr/share/acl2-7.1/books/projects/taspi/tree-score/ambig-score.o
/usr/share/acl2-7.1/books/projects/taspi/tree-score/circle-scoring.o
/usr/share/acl2-7.1/books/projects/taspi/tree-score/costs.o
/usr/share/acl2-7.1/books/projects/taspi/tree-score/efficient-pscores-help.o
/usr/share/acl2-7.1/books/projects/taspi/tree-score/efficient-pscores.o
/usr/share/acl2-7.1/books/projects/taspi/tree-score/fitch-scoring.o
/usr/share/acl2-7.1/books/projects/taspi/tree-score/min-length.o
/usr/share/acl2-7.1/books/projects/taspi/tree-score/opt-pairwise.o
/usr/share/acl2-7.1/books/projects/taspi/tree-score/pscores.o