Parameter Stacked.1-Below

include NoJoin
include IStdlib.PrettyPrintable.PrintableType
type t
val pp : IStdlib.PrettyPrintable.F.formatter -> t -> unit
val leq : lhs:t -> rhs:t -> bool

the implication relation: lhs <= rhs means lhs |- rhs

val join : t -> t -> t
val widen : prev:t -> next:t -> num_iters:int -> t