sc_wrapper (parseProg "Benchmarks/Queens.hs") ("length", lam "xs" $ fun "length" @: "xs")
Results in non-termination.
Extracted to "Failures/Queens-length.hs"
Why doesn't this example come up in ProgGen?
f x = g x A;
g x y = case x of
A -> y
B p q -> g q (B p y);
main = f (B A A)