This file is indexed.

/usr/lib/x86_64-linux-gnu/libantlr3c.so is in libantlr3c-dev 3.2-3.

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

It is a symlink to /usr/lib/x86_64-linux-gnu/libantlr3c-3.2.so.0.0.0