/usr/lib/libvala-0.12.so is in libvala-0.12-dev 0.12.1-0ubuntu3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/libvala-0.12.so.0.0.0
/usr/lib/libvala-0.12.so.0.0.0