Paper Details

Towards the Formal Verification of a Java Processor in Event-B

Authors: Grant, Neil, Evans, Neil

Abstract:

Formal verification is becoming more and more important in the production of high integrity microprocessors. The general purpose formal method called Event-B is the latest incarnation of the B Method: it is a proof-based approach with a formal notation and refinement technique for modelling and verifying systems. Refinement enables implementation-level features to be proven correct with respect to an abstract specification of the system. In this paper we demonstrate an initial attempt to model and verify Sandia National Laboratories' Score processor using Event-B. The processor is an (almost complete) implementation of a Java Virtual Machine in hardware. Thus, refinement-based verification of the Score processor begins with a formal specification of Java bytecode. Traditionally, B has been directed at the formal development of software systems. The use of B in hardware verification could provide a means of developing combined software/hardware systems, i.e. codesign.

Proceedings:

Communicating Process Architectures 2007, Alistair A. McEwan, Steve Schneider, Wilson Ifill, Peter H. Welch, 2007, pp 425 - 442 published by IOS Press, Amsterdam

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