/usr/lib/scilab/libscicommons.so.5 is in scilab-full-bin 5.5.2-4+b1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/scilab/libscicommons.so.5.5.2
/usr/lib/scilab/libscicommons.so.5.5.2