/usr/lib/x86_64-linux-gnu/libafcpu.so.3 is in libarrayfire-cpu3 3.3.2+dfsg1-4ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libafcpu.so.3.3.2
/usr/lib/x86_64-linux-gnu/libafcpu.so.3.3.2