/lib/x86_64-linux-gnu/libprocps.so.6 is in libprocps6 2:3.3.12-3+deb9u1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /lib/x86_64-linux-gnu/libprocps.so.6.0.0
/lib/x86_64-linux-gnu/libprocps.so.6.0.0