/usr/lib/xplc-0.3.13/libxplc.so is in libxplc0.3.13-dev 0.3.13-3ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/xplc-0.3.13/../libxplc.so.0.3.13
/usr/lib/xplc-0.3.13/../libxplc.so.0.3.13