/usr/lib/x86_64-linux-gnu/jni/libjpl.so is in swi-prolog-java 6.6.4-2ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/jni/../../swi-prolog/lib/amd64/libjpl.so
/usr/lib/x86_64-linux-gnu/jni/../../swi-prolog/lib/amd64/libjpl.so