/usr/lib/x86_64-linux-gnu/libvotca_tools.so is in libvotca-tools-dev 1.4.1-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libvotca_tools.so.4
/usr/lib/x86_64-linux-gnu/libvotca_tools.so.4