Vampire is an automatic theorem prover for first-order classical logic developed in the School of Computer Science at the University of Manchester by Andrei Voronkov together with Kryštof Hoder and previously with Alexandre Riazanov. So far it has won the "world cup for theorem provers" (the CADE ATP System Competition) in the most prestigious CNF (MIX) division eleven times (1999, 2001–2010).