RINGA: Design and verification of finite state machine for self-adaptive software at runtime

Euijong Lee, Young Gab Kim, Young Duk Seo, Kwangsoo Seol, Doo Kwon Baik

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Context: In recent years, software environments such as the cloud and Internet of Things (IoT) have become increasingly sophisticated, and as a result, development of adaptable software has become very important. Self-adaptive software is appropriate for today's needs because it changes its behavior or structure in response to a changing environment at runtime. To adapt to changing environments, runtime verification is an important requirement, and research that integrates traditional verification with self-adaptive software is in high demand. Objective: Model checking is an effective static verification method for software, but existing problems at runtime remain unresolved. In this paper, we propose a self-adaptive software framework that applies model checking to software to enable verification at runtime. Method: The proposed framework consists of two parts: the design of self-adaptive software using a finite state machine and the adaptation of the software during runtime. For the first part, we propose two finite state machines for self-adaptive software called the self-adaptive finite state machine (SA-FSM) and abstracted finite state machine (A-FSM). For the runtime verification part, a self-adaptation process based on a MAPE (monitoring, analyzing, planning, and executing) loop is implemented. Results: We performed an empirical evaluation with several model-checking tools (i.e., NuSMV and CadenceSMV), and the results show that the proposed method is more efficient at runtime. We also investigated a simple example application in six scenarios related to the IoT environment. We implemented Android and Arduino applications, and the results show the practical usability of the proposed self-adaptive framework at runtime. Conclusions: We proposed a framework for integrating model checking with a self-adaptive software lifecycle. The results of our experiments showed that the proposed framework can achieve verify self-adaptation software at runtime.

Original languageEnglish
JournalInformation and Software Technology
DOIs
Publication statusAccepted/In press - 2017

Keywords

  • Finite state machine
  • Model checking
  • Runtime
  • Self-adaptive software

ASJC Scopus subject areas

  • Software
  • Information Systems
  • Computer Science Applications

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