The Paths to Choreography Extraction.
Luís Cruz-Filipe, Kim S. Larsen, and Fabrizio Montesi.
In Twentieth International Conference on Foundations of Software Science and Computation Structures (FoSSaCS), Lecture Notes in Computer Science. Springer. Accepted for publication.
Choreographies are global descriptions of interactions among concurrent components, most notably used in the settings of verification and synthesis of correct-by-construction software. They require a top-down approach: programmers first write choreographies, and then use them to verify or synthesize their programs. However, most software does not come with choreographies yet, which prevents their application. To attack this problem, previous work investigated choreography extraction, which automatically constructs a choreography that describes the behavior of a given set of programs or protocol specifications.

We propose a new extraction methodology that improves on the state of the art: we can deal with programs that are equipped with state and internal computation; time complexity is dramatically better; and we capture programs that work by exploiting asynchronous communication.

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