/usr/lib/libgcugtk-0.14.so.0 is in libgcu0 0.14.6-1ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/libgcugtk-0.14.so.0.14.6
/usr/lib/libgcugtk-0.14.so.0.14.6