/usr/lib/x86_64-linux-gnu/libofa.so is in libofa0-dev 0.9.3-10ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libofa.so.0.0.0
/usr/lib/x86_64-linux-gnu/libofa.so.0.0.0