/usr/lib/x86_64-linux-gnu/libical.so.3 is in libical3 3.0.1-5.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libical.so.3.0.1
/usr/lib/x86_64-linux-gnu/libical.so.3.0.1