  Event-B is one of more popular notations for model-based, proof driven
specification. It offers a fairly high-level mathematical lan- guage based on
FOL and ZF set theory and an economical yet expres- sive modelling notation.
Model correctness is established by discharging proving a number conjectures
constructed via a syntactic instantiation of schematic conditions. A large
proportion of provable conjectures re- quires proof hints from a user. For
larger models this becomes extremely onerous as identical or similar proofs
have to be repeated over and over, especially after model refactoring stages.
In the paper we briefly present a new Rodin Platform proof back-end based on
the Why3 umbrella prover.
