Completeness and consistency analysis of state-based requirements

Mats P E Heimdahl, Nancy G. Leveson

Research output: Contribution to journalArticlepeer-review

40 Scopus citations


This paper describes methods for automatically analyzing formal, state-based requirements specifications for completeness and consistency. The approach uses a low-level functional formalism, simplifying the analysis process. State space explosion problems are eliminated by applying the analysis at a high level of abstraction; i.e, instead of generating a reachability graph for analysis, the analysis is performed directly on the model. The method scales up to large systems by decomposing the specification into smaller, analyzable parts and then using functional composition rules to ensure that verified properties hold for the entire specification. The analysis algorithms and tools have been validated on TCAS II, a complex, airborne, collision-avoidance system required on all commercial aircraft with more than 30 passengers that fly in U.S. airspace.

Original languageEnglish (US)
Pages (from-to)3-14
Number of pages12
JournalProceedings - International Conference on Software Engineering
StatePublished - Jan 1 1995


Dive into the research topics of 'Completeness and consistency analysis of state-based requirements'. Together they form a unique fingerprint.

Cite this