/usr/lib/libkasten2controllers.so.2abi1 is in libkasten2controllers2abi1 4:4.13.0-0ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/libkasten2controllers.so.0.2.0.abi1
/usr/lib/libkasten2controllers.so.0.2.0.abi1