/usr/lib/x86_64-linux-gnu/libbulletml.so is in libbulletml-dev 0.0.6-6.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libbulletml.so.0d2
/usr/lib/x86_64-linux-gnu/libbulletml.so.0d2