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Murphi – Verification Tool

Murphi – Verification Tool. By N.Mallikarjuna Rao K.Ravi Sankar Kolli Kiran Kumar. Murphi Algorithm. On-the-fly Model checking Algorithm Based on guarded commands Explicit state enumeration. State Reduction. Symmetry Reversible Rules Repitition Constructors. Symmetry. Scalarset

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Murphi – Verification Tool

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  1. Murphi – Verification Tool By N.Mallikarjuna Rao K.Ravi Sankar Kolli Kiran Kumar

  2. Murphi Algorithm • On-the-fly Model checking Algorithm • Based on guarded commands • Explicit state enumeration

  3. State Reduction • Symmetry • Reversible Rules • Repitition Constructors

  4. Symmetry • Scalarset • Restricted Access • Automorphism

  5. Equivalent State Construction • Symmetry Equivalence Class

  6. State Reduction with Reversible Rules • Identifying the reversible rules • Identifying the subset • Making the proginator as the state

  7. Repetition Constructors • Finding the exact number • Finding the number which is enough • Utilized areas

  8. Hash Compaction • State Space • Hashing • Size of each state • Detecting equivalent states

  9. Hash Compaction • Large table of bits • Problems: more than one state to the same

  10. Probabilistic Verification • Size of each state • Open addressing • Verification with low probability of errors

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