/usr/lib/x86_64-linux-gnu/libbabeltrace-ctf.so is in libbabeltrace-ctf-dev 1.3.2-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libbabeltrace-ctf.so.1.0.0
/usr/lib/x86_64-linux-gnu/libbabeltrace-ctf.so.1.0.0