def METHOD_NAME(self):
    """clone VM with incremental backup images as vm's data images"""
    if self.main_vm.is_alive():
        self.main_vm.destroy()
    params = self.main_vm.params.copy()
    images = [params.objects("images")[0]] + self._inc_bk_images
    params["images"] = " ".join(images)
    self.clone_vm = self.main_vm.clone(params=params)
    self.clone_vm.create()
    self.clone_vm.verify_alive()
    self.env.register_vm("%s_clone" % self.clone_vm.name, self.clone_vm)