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Execution Time Program Verification With Tight Bounds

Talkat PADL 2023 · 2023-01-16..01-17· [software-architecture]
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Proof system gives three Hoare-style logics with worst-case bounds, amortized potential method, and an exact-cost logic (language restricted: equal-cost branches and for-loops). Soundness is proved against an annotated cost-aware operational semantics. A VC generator/weakest-precondition produces obligations sent to Easycrypt and an OCaml prototype that validates examples: insertion sort proven O(n^2), binary search O(log n), binary counter amortized from n log n down to Θ(n), and a filter with exact linear cost. Toolchain and proofs are implemented and automated.

AI-written summary · about

  1. 0:00Introduction
  2. 0:45Motivation
  3. 1:35Background
  4. 3:10Logic
  5. 9:23Application
  6. 15:15Results
  7. 18:35Summary
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