Goblint_lib.GStoreWideningHelperContains some definitions that are helpful for the tutorial but out of scope
module Intervals : sig ... endval top_of_typ : GoblintCil.Cil.typ -> Intervals.tval top_of_exp : GoblintCil.exp -> Intervals.tval top_of_var : GoblintCil.varinfo -> Intervals.tval cast_to_typ : GoblintCil.Cil.typ -> Intervals.t -> Intervals.tval const_int : GoblintCil.Cil.ikind -> Intervals.int_t -> Intervals.t