quickcheck returns counterexamples that are potentially spurious due to underspecified code equations and match exceptions
(* Title: ZF/Constructible/ROOT.ML
Author: Lawrence C Paulson, Cambridge University Computer Laboratory
Copyright 2002 University of Cambridge
Inner Models, Absoluteness and Consistency Proofs.
*)
use_thys ["DPow_absolute", "AC_in_L", "Rank_Separation"];