This file is indexed.

/usr/lib/x86_64-linux-gnu/libtrilinos_tpetraext.so is in libtrilinos-tpetra-dev 12.10.1-3.

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

It is a symlink to /usr/lib/x86_64-linux-gnu/libtrilinos_tpetraext.so.12