/usr/lib/x86_64-linux-gnu/libcigicl.so is in libcigicl-dev 3.3.3a+svn818-10ubuntu2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libcigicl.so.1
/usr/lib/x86_64-linux-gnu/libcigicl.so.1