/usr/lib/x86_64-linux-gnu/libbuteosyncfw5.so.0.1 is in libbuteosyncfw5-0 0.7.21+16.04.20151216.1-0ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libbuteosyncfw5.so.0.1.0