/usr/lib/x86_64-linux-gnu/libftdipp1.so is in libftdipp1-dev 1.4-1build1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libftdipp1.so.3
/usr/lib/x86_64-linux-gnu/libftdipp1.so.3