Liquidate Your Assets: Reasoning About Resource Usage in Liquid Haskell
Liquid Haskell is an extension to the type system of Haskell that supports formal reasoning about program correctness by encoding logical properties as refinement types. In this article, we show how Liquid Haskell can also be used to reason about program efficiency in the same setting, with the system’s existing verification machinery being used to ensure that the results are both valid and precise. To illustrate our approach, we analyse the efficiency of a wide range of popular data structures and algorithms, and in doing so, explore various notions of resource usage. Our experience is that reasoning about efficiency in Liquid Haskell is often just as simple as reasoning about correctness, and that the two can naturally be combined.
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|11:45 - 12:07|
Alex KavvosAarhus University, Edward MorehouseWesleyan University, Dan LicataWesleyan University, Norman DannerWesleyan UniversityLink to publication DOI File Attached
|12:07 - 12:30|
Martin Adam Thomas HandleyUniversity of Nottingham, Niki VazouIMDEA Software Institute, Graham HuttonUniversity of Nottingham, UKLink to publication DOI Media Attached File Attached