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In his 1991 dissertation, Olin Shivers introduces a concept
of control flow graphs for functional languages, provides an algorithm
to statically derive a safe approximation of the control flow graph and
proves this algorithm correct. In our student research project,
Shivers' algorithms and proofs are formalized using the theorem prover
system Isabelle.
This package contains the Haskell prototype of the Isabelle
formalization, together with some pretty printing and rendering
facilities. It is provided as a reference, not as a ready-to-use library.
