This volume presents the proceedings of the Second International Symposium of Formal Methods Europe, held in Barcelona, Spain in October 1994.Besides two invited papers and seven industrial usage reports, there are 32 full papers selected from some 150 submissions.

From action systems to modular systems.- Formal methods in the railways signalling industry.- Formal and informal specifications of a secure system component: first results in a comparative study.- Formalising British rail's signalling rules.- Three applications of formal methods at MITRE.- Specification and analysis of a security management system.- Verification techniques for LOTOS.- Experiences in using the abstract machine notation in a GKS case study.- Seven more myths of formal methods: Dispelling industrial prejudices.- Comparing approaches to data reification.- Towards a formalization of programming-by-difference.- A new concept of refinement used for behaviour modelling with automata.- An extended VDM refinement relation.- On transferring VDM verification techniques to Z.- Proof-based development of specifications with KIDS/VDM.- Evaluation of underdetermined explicit definitions.- A precise examination of the behaviour of process models.- A theory of presentations.- Applying a concurrent formal framework to process modelling.- From MooZ to eiffel — A rigorous approach to system development.- OPUS: a formal approach to object-orientation.- A strategy for the production of verifiable code using the B Method.- Specifying & verifying concurrent systems using Z.- A critical look at functional specifications.- Informal strategies in design by refinement.- An experimental support system for formal mathematical reasoning.- Literate mathematical development of a revision management system.- An action semantics for ML concurrency primitives.- A semantics for NewSpeak in VDM-SL.- Evaluation semantics in Z.- Abstract model checking of infinite specifications.- Case study: Specification and refinement of the PI-Bus.- Stepwise refinement of control software — A casestudy using RAISE.- Specifying safety and progress properties with RSL.- Validation of a railway interlocking model.- A formal specification of an automatic train protection system.- Adding real time to formal program development.- Combining the design of industrial systems with effective verification techniques.- RTL and refutation by positive cycles.- Formalising the semantics of Ward/Mellor SA/RT essential models using a process algebra.- Deriving relational database programs from formal specifications.

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