NO
0 QTRS
↳1 NonTerminationProof (⇒, 115 ms)
↳2 NO
Begin(a(x)) → Wait(Right1(x))
Begin(a(b(x))) → Wait(Right2(x))
Begin(b(x)) → Wait(Right3(x))
Begin(a(a(x))) → Wait(Right4(x))
Begin(a(x)) → Wait(Right5(x))
Right1(b(End(x))) → Left(b(b(End(x))))
Right2(b(End(x))) → Left(b(a(a(End(x)))))
Right3(b(a(End(x)))) → Left(b(a(a(End(x)))))
Right4(a(End(x))) → Left(a(b(b(End(x)))))
Right5(a(a(End(x)))) → Left(a(b(b(End(x)))))
Right1(b(x)) → Ab(Right1(x))
Right2(b(x)) → Ab(Right2(x))
Right3(b(x)) → Ab(Right3(x))
Right4(b(x)) → Ab(Right4(x))
Right5(b(x)) → Ab(Right5(x))
Right1(a(x)) → Aa(Right1(x))
Right2(a(x)) → Aa(Right2(x))
Right3(a(x)) → Aa(Right3(x))
Right4(a(x)) → Aa(Right4(x))
Right5(a(x)) → Aa(Right5(x))
Ab(Left(x)) → Left(b(x))
Aa(Left(x)) → Left(a(x))
Wait(Left(x)) → Begin(x)
b(a(x)) → b(b(x))
b(a(b(x))) → b(a(a(x)))
a(a(a(x))) → a(b(b(x)))
Begin b b a End → Begin b b a End
Begin b b a End → Wait Left b b a End
by OverlapClosure OC 2Begin b → Wait Right3
by original rule (OC 1)Right3 b a End → Left b b a End
by OverlapClosure OC 3Right3 b a End → Left b a a End
by original rule (OC 1)b a → b b
by original rule (OC 1)
Wait Left → Begin
by original rule (OC 1)