/usr/lib/x86_64-linux-gnu/libmetis.so.5 is in libmetis5 5.1.0.dfsg-4.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libmetis.so.5.1.0
/usr/lib/x86_64-linux-gnu/libmetis.so.5.1.0