/usr/lib/ardour5/libpbd.so.4

This file is indexed.

/usr/lib/ardour5/libpbd.so.4 is in ardour 1:5.12.0-3.

This file is owned by root:root, with mode 0o777.

It is a symlink to /usr/lib/ardour5/libpbd.so.4.1.0