/usr/lib/libstarpu-1.1.so.7 is in libstarpu-1.1-7 1.1.3+dfsg-3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/libstarpu-1.1.so.7.1.0
/usr/lib/libstarpu-1.1.so.7.1.0