This file is indexed.

/usr/lib/x86_64-linux-gnu/libgnatcoll_gmp.so is in libgnatcoll-gmp1.6-dev 1.6gpl2014-9.

This file is owned by root:root, with mode 0o777.

It is a symlink to /usr/lib/x86_64-linux-gnu/libgnatcoll_gmp.so.1.6