한국정보과학회논문지:소프트웨어및응용 (Journal of KIISE:Software and Applications)

한국정보과학회 (Korean Institute of Information Scientists and Engineers)
권호 표지

병렬 객체지향 시스템의 검증

Model Checking of Concurrent Object-Oriented Systems

  • 조승모 (한국과학기술원 전산학과) ;
  • 김영곤 (한국과학기술원 전산학과) ;
  • 배두환 (한국과학기술원 전산학과) ;
  • 변성원 (한국통신 멀티미디어연구소) ;
  • 김상택 (한국통신 멀티미디어연구소)
  • 발행 : 2000.01.15
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초록

모델체킹은 검증하려는 대상 시스템의 동작 모델이, 그 시스템이 만족해야 할 성질을 만족시키는지를, 시스템의 상태공간을 검사해 봄으로써 알아보는 정형 검증 기법의 하나이다. 이러한 모델체킹 기법을 병렬 객체지향 시스템에 적용하기 위해 기존의 모델체커인 SPIN에서 지원하는 모델링 언어인 Promela를 병렬객체지향 개념을 추가하여 확장한 언어인 APromela를 제안하였다. 이는 Promela가 프로세스를 단위로 하는 병렬성만을 지원하는데 반해, 액터 모델에 기반한 객체지향 병렬성을 지원한다. 또한 우리는 이 언어로 작성된 모델을 자동으로 Promela로 변환하는 규칙을 제안하였다. 이를 통해, 기존의 모델체커를 이용해 병렬 객체지향 시스템의 검증을 수행할 수 있다. 이 언어의 응용으로 UML 로 기술된 명세의 검증을 수행하는 과정을 제시하였다.

Model checking is a formal verification technique which checks the consistency between a requirement specification and a behavior model of the system by explorating the state space of the model. We apply model checking to the formal verification of the concurrent object-oriented system, using an existing model checker SPIN which has been successful in verifying concurrent systems. First, we propose an Actor-based modeling language, called APromela, by extending the modeling language Promela which is a modeling language supported in SPIN. APromela supports not only all the primitives of Promela, but additional primitives needed to model concurrent object-oriented systems, such as class definition, object instantiation, message send, and synchronization.Second, we provide translation rules for mapping APromela's such modeling primitives to Promela's. As an application of APromela, we suggest a verification method for UML models. By giving an example of specification, translation, and verification, we also demonstrate the applicability of our proposed approach, and discuss the limitations and further research issues.

키워드

참고문헌

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