This file is indexed.

/usr/lib/x86_64-linux-gnu/libfftw3_mpi.so.3 is in libfftw3-mpi3 3.3.3-2ubuntu2.

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

It is a symlink to /usr/lib/x86_64-linux-gnu/libfftw3_mpi.so.3.3.2