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)))))