/usr/share/hol88-2.02.19940316/Library/pred_sets/ is in hol88-library-source 2.02.19940316-19.
This file is owned by root:root, with mode 0o755.
..
/usr/share/hol88-2.02.19940316/Library/pred_sets/OLD/
/usr/share/hol88-2.02.19940316/Library/pred_sets/OLD/load_pred_sets.ml
/usr/share/hol88-2.02.19940316/Library/pred_sets/OLD/mk_pred_set_defs.ml
/usr/share/hol88-2.02.19940316/Library/pred_sets/OLD/mk_pred_sets.ml
/usr/share/hol88-2.02.19940316/Library/pred_sets/OLD/pred_sets.ml
/usr/share/hol88-2.02.19940316/Library/pred_sets/fset_conv.ml
/usr/share/hol88-2.02.19940316/Library/pred_sets/gspec.ml
/usr/share/hol88-2.02.19940316/Library/pred_sets/load_pred_sets.ml
/usr/share/hol88-2.02.19940316/Library/pred_sets/mk_pred_sets.ml
/usr/share/hol88-2.02.19940316/Library/pred_sets/pred_sets.ml
/usr/share/hol88-2.02.19940316/Library/pred_sets/set_ind.ml