This file is indexed.

/usr/lib/x86_64-linux-gnu/libsynctex.so.1 is in libsynctex1 2016.20160513.41080.dfsg-2+deb9u1.

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

It is a symlink to /usr/lib/x86_64-linux-gnu/libsynctex.so.1.18.0