/usr/lib/libstarpufft-1.1.so.1 is in libstarpufft-1.1-1 1.1.0+dfsg-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/libstarpufft-1.1.so.1.0.1
/usr/lib/libstarpufft-1.1.so.1.0.1