Spec.D{ t_d |-> L }
t_d was transitively created with all members of L held. Additionally, no member of L could have been unlocked after the creation of t_d If L is bot, this does not represent "all mutexes". Instead, it indicates no (transitive) creation of t_d has happened
type key = TID.ttype value = Lockset.tval cardinal : t -> intval empty : unit -> tval is_empty : t -> boolval hash : t -> intval show : t -> stringval pretty : unit -> t -> Printable.Pretty.docval printXml : 'a BatInnerIO.output -> t -> unitval to_yojson : t -> Yojson.Safe.tval tag : t -> intval arbitrary : unit -> t QCheck.arbitraryval bot : unit -> tval is_bot : t -> boolval top : unit -> tval is_top : t -> bool