A plan containing at least a cycle.
(=> (Cyclical-Plan ?Self)
(And (Exists (?A)
(And (Represented-By ?Self ?A)
(Flow-Chart ?A)
(Exists (?B)
(And (First-Node ?A ?B)
(Cycle-Node ?B)))
(Forall (?B ?C)
(=> (And (First-Node ?A ?B)
(First-Node ?A ?C))
(= ?B ?C)))))
(Exists (?D) (And (Method-Of ?Self ?D) (Act-Stage ?D)))))