Verification of event-driven software systems using the specification language of cooperating automata objects

The CIAO (Cooperative Interaction Automata Objects) specification language is intended to describe the behavior of distributed and parallel event-driven systems. This class systems includes various software hardware for control, monitoring, data collection, processing. ability verify compliance with requirements desirable competitive advantage such extends concept state machines UML (Unified Modeling Language) possibility cooperative interaction several automata through strictly defined interfaces. automatа objects by a link scheme that defines how provided required interfaces different are connected. Thus, system as whole could be described set execution protocols, each which sequence interface calls, possibly guard conditions. We represent protocols using semantic graph in all possible paths from initial nodes final define sequences method calls. Because advance connection scheme, it construct automatically according given interacting automaton objects. To behavior, one only has check if path does satisfy requirements. System formally conditional regular expressions patterns acceptable forbidden behavior. article proposes methods algorithms allow you programs and, thereby, semantics developed program. proposed narrows formalism languages programming simple predefined structure. In many practical cases, this sufficient effective verification.