Payment may be made to the defendants entitled to payment, or the money may be deposited in court for the defendants and be distributed to those entitled to it. If the money is not so paid or deposited, the defendants may have execution as in civil cases. If the money cannot be obtained on execution, the court, upon a showing to that effect, shall set aside and annul the entire proceedings and restore possession of the property to the defendants if possession has been taken by the plaintiff.