/usr/lib/x86_64-linux-gnu/libgtkada.so is in libgtkada2.24.4-dev 2.24.4dfsg-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libgtkada.so.2.24.4
/usr/lib/x86_64-linux-gnu/libgtkada.so.2.24.4