ramework for Evaluating Sp ethods for Reactive Sys Experience Report
Mark A. Ardis, John A. Chaves, Lalita Jategaonkar Jagadeesan, Peter A. Mataga, Carlos Puchol, Mark G. Staskauskas, James Von Olnhausen · 1996
Numerous formal specification methods for reactive systems have been proposed in the literature. Because the significant differences between the methods are hard to determine, choosing the best method for a particular application can be difficult. We have applied several different methods, including Modechart, VFSM, ESTEREL, Basic LOTOS, Z, SDL, and C, to an application problem encountered in the design of software for AT&Ts 5ESS@ telephone switching system. We have developed a set of criteria for evaluating and comparing the different specification methods. We argue that the evaluation of a method must take into account not only academic concerns, but also the maturity of the method, its compatibility with the existing software development process and system execution environment, and its suitability for the chosen application domain. Index Terms-Formal methods, specification languages, industrial applications, technology assessment, ESTEREL, LOTOS, Modechart, SDL, VFSM, Z.