/usr/lib/x86_64-linux-gnu/libcasa_scimath.so.2 is in libcasa-scimath2 2.2.0-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libcasa_scimath.so.2.2.0
/usr/lib/x86_64-linux-gnu/libcasa_scimath.so.2.2.0