/usr/lib/libqttestability.so is in qttestability-autopilot 1.4+15.10.20150825-0ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/libqttestability.so.1.0.0
/usr/lib/libqttestability.so.1.0.0