/usr/lib/x86_64-linux-gnu/libsocl-1.1.so is in libstarpu-dev 1.1.4+dfsg-3build2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libsocl-1.1.so.1.0.2
/usr/lib/x86_64-linux-gnu/libsocl-1.1.so.1.0.2