/usr/lib/libsrfftw_mpi.so

This file is indexed.

/usr/lib/libsrfftw_mpi.so is in sfftw-dev 2.1.5-4.1.

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

It is a symlink to /usr/lib/libsrfftw_mpi.so.2.0.7