Description
This book presents state-of-the-art research results in the area of formal methods for real-time and fault-tolerant systems. The papers consider problems and solutions in safety-critical system design and examine how wellthe use of formal techniques for design, analysis and verification serves in relating theory to practical realities. The book contains papers on real-time and fault-tolerance issues. Formal logic, process algebra, and action/event models are applied: – to specify and model qualitative and quantitative real-time and fault-tolerant behavior, – to analyze timeliness requirements and consequences of faulthypotheses, – to verify protocols and program code, – to formulate formal frameworks for development of real-time and fault-tolerant systems, – to formulate semantics of languages. The integration and cross-fertilization of real-time and fault-tolerance issues have brought newinsights in recent years, and these are presented in this book. ISL: An interval logic for the specification of real-time programs.- Duration specifications for shared processors.- A compositional semantics for fault-tolerant real-time systems.- Modelling real-time behavior with an interval time calculus.- Multicycles and RTL logic satisfiability.- Voluntary preemption: A tool in the design of hard real-time systems.- Observing task preemption in Ada 9X.- Real-time scheduling by queue automata.- Broadcast communication for real-time processes.- Analysis of timeliness requirements in safety-critical systems.- Verification of a reliable net protocol.- Mechanical verification of a generalized protocol for Byzantine fault tolerant clock synchronization.- Formal specification and verification of a fault-masking and transient-recovery model for digital flight-control systems.- On fault-tolerant symbolic computations.- Temporal logic applied to reliability modelling of fault-tolerant systems.- Specifying asynchronous transfer of control.- Protocol design by layered decomposition.- Scheduling in Real-Time Models.- A temporal approach to requirements specification of real-time systems.- RLucid, a general real-time dataflow language.- A mechanized theory for the verification of real-time program code using higher order logic.- Specification and verification of real-time behaviour using Z and RTL.- TAM: A formal framework for the development of distributed real-time systems.- An attempt to confront asynchronous reality to synchronous modelization in the ESTEREL language.- The real-time behaviour of asynchronously communicating processes.- Asynchronous communication in real space process algebra.- Translating timed process algebra into prioritized process algebra.- Operational semantics for timed observations.- Real-timed concurrent refineable behaviours.- Stepwise development of model-oriented real-time specifications from action/event models.- Formal specification of fault tolerant real time systems using minimal 3-sorted modal logic.- Timed and Hybrid Statecharts and their textual representation.
