/usr/lib/x86_64-linux-gnu/libvirt-qemu.so is in libvirt-dev 4.0.0-1ubuntu8.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libvirt-qemu.so.0.4000.0
/usr/lib/x86_64-linux-gnu/libvirt-qemu.so.0.4000.0