/usr/lib/x86_64-linux-gnu/libvisp_io.so

This file is indexed.

/usr/lib/x86_64-linux-gnu/libvisp_io.so is in libvisp-io-dev 3.1.0-2.

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

It is a symlink to /usr/lib/x86_64-linux-gnu/libvisp_io.so.3.1