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Separation Logic for Sequential Programs (Functional Pearl)

Talkat ICFP 2020 · 2020-08-23..08-26
links:none on file
slides:none on file

A mechanized formalization claims a teachable Separation Logic for sequential programs with all definitions and proofs encoded in Coq formalization and material split into 10 chapters. It builds weakest preconditions, a ramified frame rule that avoids computing frame differences, a mix of affine and linear predicates, and a frame-friendly loop rule that simulates recursive reasoning for while loops. The lambda-calculus setup removes mutable-variable side conditions, simplifies proofs, and targets reuse in practical tooling; Coq and HTML sources are available.

AI-written summary · about

  1. 0:00Intro
  2. 0:27Contributions
  3. 1:16Chapters of the course
  4. 1:57Deep embedding of an imperative A-calculus
  5. 3:21Shallow embedding of Separation Logic
  6. 3:52Total correctness triples
  7. 4:50The ramified frame rule Frame rule: almost never applicable
  8. 6:32Weakest-precondition presentation Like in Hoare Logic, WP is a key ingredient for building practical tools. What definition for WP in SL? What frame rule in WP-style?
  9. 8:04Mixing affine and linear predicates: motivation
  10. 8:59(3) Mixing affine and linear predicates: a solution Definitions affine heaps
  11. 10:12Frame-friendly rule for loops: motivation
  12. 11:33(4) Frame-friendly rule for loops: solution Big-step specification state at the i-th iteration
  13. 12:33Conclusion
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