0.00/0.01 NO 0.00/0.01 formula body / witness: 0.00/0.01 (0 (<- o ->*) 1 ∧ ¬ 0 (->* o *<-) 1) 0.00/0.01 0 = a() 0.00/0.01 1 = d() 0.00/0.02 Certificate: 0.00/0.02 (0 0.00/0.02 (rr2 (comp (step (0-)) (step* (0))) 0 1) 0.00/0.02 (rr2 (comp (step (0-)) (step* (0))) 0 1)) 0.00/0.02 (1 0.00/0.02 (rr2 (comp (step* (0)) (step* (0-))) 0 1) 0.00/0.02 (rr2 (comp (step* (0)) (step* (0-))) 0 1)) 0.00/0.02 (2 (not 1) (not (rr2 (comp (step* (0)) (step* (0-))) 0 1))) 0.00/0.02 (3 0.00/0.02 (and (0 2)) 0.00/0.02 (and ((rr2 (comp (step (0-)) (step* (0))) 0 1) 0.00/0.02 (not (rr2 (comp (step* (0)) (step* (0-))) 0 1))))) 0.00/0.02 (4 0.00/0.02 (exists 3) 0.00/0.02 (exists (and ((rr2 (comp (step (0-)) (step* (0))) 0 1) 0.00/0.02 (not (rr2 (comp (step* (0)) (step* (0-))) 0 1)))))) 0.00/0.02 (5 0.00/0.02 (exists 4) 0.00/0.02 (exists (exists (and ((rr2 (comp (step (0-)) (step* (0))) 0 1) 0.00/0.02 (not (rr2 (comp (step* (0)) (step* (0-))) 0 1))))))) 0.00/0.02 (6 0.00/0.02 (not 5) 0.00/0.02 (not (exists (exists (and ((rr2 (comp (step (0-)) (step* (0))) 0 1) 0.00/0.02 (not (rr2 (comp (step* (0)) (step* (0-))) 0 1)))))))) 0.00/0.02 (7 0.00/0.02 (nnf 6) 0.00/0.02 (forall (forall (or ((not (rr2 (comp (step (0-)) (step* (0))) 0 1)) 0.00/0.02 (rr2 (comp (step* (0)) (step* (0-))) 0 1)))))) 0.00/0.02 (empty 7) 0.00/0.02 EOF