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VERIFICATION IN CHUNK-BASED SOFTWARE EVOLUTION

VERIFICATION IN CHUNK-BASED SOFTWARE EVOLUTION. Mehrnaz Najafi , Rick Salay and Marsha Chechik NECSIS/ORF Workshop 2014. The Verification Problem. |= P 1. |= P 2. The Verification Problem. |= P 1. |= P 2. |= P 1 ∧P 2 ?. First Step: Componentization.

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VERIFICATION IN CHUNK-BASED SOFTWARE EVOLUTION

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  1. VERIFICATION IN CHUNK-BASED SOFTWARE EVOLUTION MehrnazNajafi, Rick Salay and Marsha Chechik NECSIS/ORF Workshop 2014

  2. The Verification Problem |= P1 |= P2

  3. The Verification Problem |= P1 |= P2 |= P1∧P2 ?

  4. First Step: Componentization Goal: Parallel Composed Components • Desirable properties: • Preserve structure • Minimal changes

  5. Second Step: Plant Synthesis Problem: The parallel composition is too large to verify! Plant

  6. Second Step: Plant Synthesis Method: Learning algorithm [1] (LTSA Tool [2]) Steps: Convert to LTS Apply learning using LTSA Plant [1] C. S. Pasareanu et al., Learning to divide and conquer: applying the L* algorithm to automate assume-guarantee reasoning, FMSD, Vol. 32, Issue 3, 2008. [2] J. Magee and J. Kramer, Concurrency: state models & Java programs, John Wiley & Sons, 1999.

  7. Pros and Cons of Learning Automated Synthesis Conversion of behavioral models to LTSs increases the size of behavioral models Currently, the learning technique only supports safety properties

  8. Third Step: Model Checking Modified chunk P1 P2 Plant Model Checking LTSA Tool No Yes

  9. Future Work • Reuse existing plants • Support for liveness properties • Using other techniques to synthesize plants

  10. Please See Our Poster !

  11. Thank You • Questions?

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