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研究生: 程郁如
論文名稱: Explicit Compositional State-Space Enumeration with Context Constraint & Counter Examples by Hierarchical Tracing
指導教授: 鄭永斌
Cheng, Yung-Pin
學位類別: 碩士
Master
系所名稱: 資訊教育研究所
Graduate Institute of Information and Computer Education
論文出版年: 2005
畢業學年度: 93
語文別: 英文
論文頁數: 74
中文關鍵詞: Compositional AnalysisContext ConstraintState ExplosionHierarchical Tracing
論文種類: 學術論文
相關次數: 點閱:220下載:0
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  • 在局部分析(Compositional Analysis)技術中,在合成展開一個代表子系統行
    為的狀態空間(State Space)時,這個合成展開的過程中必須要加入本文限制
    (Context Constraint)與簡化子系統(Reduction or Minimization)的技術來降低組態
    爆炸(State Explosion)的問題。然而,目前為止,已知的驗證工具對局部分析的
    支援還是很稀少。這些少數支援局部分析的工具通常操作過程繁複,一般使用
    者很難上手。
    在本篇論文中,我們根據既有的理論與技術,開發實做出一個較為容易使
    用的工具套件。其中,我們實做了本文限制(Context Constraint)的技術來消除子
    系統內多餘的狀態。除此之外,為了降低子系統展開的狀態空間的規模,我們
    另外提出了一個以Branching Bisimulation 關係為基礎的on-the-fly Branching
    Bisimulation技術,用來在展開的過程中去簡化子系統的狀態空間。另外,我們
    發展出來的工具,還根據了階層式追蹤(Hierarchical Tracing)的演算法實做出階
    層追蹤的功能,此功能能夠提供關於分析結果的完整資訊給使用者。本篇論文
    將對本文限制(Context Constraint)、階層式追蹤(Hierarchical Tracing)與支援
    on-the-fly Branching Bisimulation 這幾方面的實作加以闡述。

    ABSTRACT IN CHINESE.................................................................................................................... II ABSTRACT IN ENGLISH...................................................................................................................III ACKNOWLEDGEMENTS ................................................................................................................... V TABLE OF CONTENTS.......................................................................................................................VI LIST OF FIGURES...........................................................................................................................VIII CHAPTER 1. INTRODUCTION........................................................................................................... 1 1.1. OVERVIEW ..................................................................................................................................... 1 1.2. OBJECTIVE..................................................................................................................................... 4 1.3. ORGANIZATION ............................................................................................................................... 5 CHAPTER 2. BACKGROUND.............................................................................................................. 7 2.1. LABELED TRANSITION SYSTEM (LTS) .......................................................................................... 10 2.2. PARALLEL COMPOSITION ...............................................................................................................11 2.3. STATE SPACE ENUMERATION......................................................................................................... 16 2.3.1. Explicit V.S. Implicit ............................................................................................................. 17 2.3.2. Reduction and Minimization ................................................................................................ 18 2.3.3. Compositional Analysis........................................................................................................ 20 2.3.4. Model Refactoring................................................................................................................ 24 2.4. HIERARCHICAL TRACING .............................................................................................................. 26 2.5. MODEL CHECKING TOOLS............................................................................................................. 27 2.5.1. FC2TOOLS .......................................................................................................................... 28 2.5.2. SPIN.................................................................................................................................... 28 2.5.3. SMV..................................................................................................................................... 29 CHAPTER 3. CONTEXT CONSTRAINT.......................................................................................... 30 3.1. COMPOSITION ............................................................................................................................... 30 3.2. COMPOSITION WITH CONTEXT CONSTRAINT................................................................................. 34 CHAPTER 4. SUPPORT FOR ON-THE-FLY MINIMIZATION.................................................... 40 4.1. ON-THE-FLY BRANCHING BISIMULATION...................................................................................... 40 4.2. SUPPORT ON-THE-FLY BRANCHING BISIMULATION....................................................................... 42 4.2.1. Explore States by Breadth-First Algorithm.......................................................................... 42 4.2.2. Providing an Interface for Branching Bisimulation............................................................. 43 4.2.3. Maintain Information of Merged States ............................................................................... 44 CHAPTER 5. DEADLOCK DETECTION AND HIERARCHICAL TRACING........................... 46 5.1. DEADLOCK DETECTION ................................................................................................................ 46 5.2. HIERARCHICAL TRACING .............................................................................................................. 47 5.2.1. Main Algorithm of Hierarchical Tracing.............................................................................. 48 5.2.2. Global Tracing of Subsystem................................................................................................ 51 5.2.3. Recover Details Suppressed by Minimization ...................................................................... 54 CHAPTER 6. DISCUSSION................................................................................................................ 58 6.1. FILE FORMAT ............................................................................................................................... 58 6.2. DATA STRUCTURE OF STATE ID..................................................................................................... 59 CHAPTER 7. CONCLUSION.............................................................................................................. 63 CHAPTER 8. FUTURE WORK.......................................................................................................... 66 8.1. INTEGRATION ............................................................................................................................... 66 8.2. CHECK SAFETY PROPERTIES ......................................................................................................... 66 REFERENCE........................................................................................................................................ 68 APPENDIX............................................................................................................................................ 72 CCS FILE FORMAT............................................................................................................................ 72 STB FILE FORMAT............................................................................................................................ 73 EXPORT FILE FORMAT....................................................................................................................... 73 HIERARCHY FILE FORMAT ................................................................................................................ 74 DEADLOCK TRACE FILE FORMAT ..................................................................................................... 74 TRACE FILE FORMAT......................................................................................................................... 74

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