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POPL 2019
Sun 13 - Sat 19 January 2019 Cascais, Portugal
Fri 18 Jan 2019 10:57 - 11:19 at Sala II - Abstract Interpretation Chair(s): David Naumann

Abstract interpretation promises sound but computable static summarization of program behavior. However, modern software engineering practices pose significant challenges to this vision, specifically the extensive use of frameworks and complex libraries. Frameworks heavily use reflection, metaprogramming, and multiple layers of abstraction, all of which confound even state-of-the-art abstract interpreters. Sound but conservative analysis of frameworks is impractically imprecise, and unsoundly ignoring reflection and metaprogramming is untenable given the prevalence of these features. Manually modeling framework behaviors offers excellent precision, at the cost of immense effort by the tool designer.

To overcome the above difficulties, we present Concerto, a system for analyzing framework-based applications by soundly combining concrete and abstract interpretation. Concerto analyzes framework implementations using concrete interpretation, and application code using abstract interpretation. This technique is possible in practice as framework implementations typically follow a single path of execution when provided a concrete, application-specific configuration file which is often available at analysis time. Concerto exploits this configuration information to precisely resolve reflection and other metaprogramming idioms during concrete execution. In contrast, application code may have infinitely many paths of execution, so Concerto switches to abstract interpretation to analyze application code. Concerto is an analysis framework, and can be instantiated with any abstract interpretation that satisfies a small set of preconditions. In addition, unlike manual modeling, Concerto is not specialized to any specific framework implementation. We have formalized our approach and proved several important properties including soundness and termination. In addition, we have implemented an initial proof of concept prototype of Concerto for a subset of Java, and found that our combined interpretation significantly improves analysis precision and performance.

Fri 18 Jan
Times are displayed in time zone: Greenwich Mean Time : Belfast change

10:35 - 12:03: Abstract InterpretationResearch Papers at Sala II
Chair(s): David NaumannStevens Institute of Technology
10:35 - 10:57
A^2 I: Abstract^2 InterpretationDistinguished Paper
Research Papers
Patrick Cousot, Roberto GiacobazziUniversity of Verona and IMDEA Software Institute, Francesco RanzatoUniversity of Padova
Link to publication DOI Media Attached File Attached
10:57 - 11:19
Concerto: A Framework for Combined Concrete and Abstract Interpretation
Research Papers
John TomanUniversity of Washington, Seattle, Dan GrossmanUniversity of Washington
Link to publication DOI Media Attached
11:19 - 11:41
Skeletal Semantics and their Interpretations
Research Papers
Martin BodinImperial College London, Philippa GardnerImperial College London, Thomas P. JensenINRIA Rennes, Alan SchmittInria
Link to publication DOI Pre-print Media Attached File Attached
11:41 - 12:03
Refinement of Path Expressions for Static Analysis
Research Papers
John CyphertUniversity of Wisconsin - Madison, Jason BreckUniversity of Wisconsin - Madison, Zachary KincaidPrinceton University, Thomas RepsUniversity of Wisconsin - Madison and GrammaTech, Inc.
Link to publication DOI Media Attached File Attached