/usr/lib/x86_64-linux-gnu/libcaffe.so is in libcaffe-cpu-dev 1.0.0~rc4-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libcaffe.so.1.0.0-rc4
/usr/lib/x86_64-linux-gnu/libcaffe.so.1.0.0-rc4