/usr/lib/scilab/libscigraphics.so is in scilab-full-bin 6.0.1-1ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/scilab/libscigraphics.so.6.0.1
/usr/lib/scilab/libscigraphics.so.6.0.1