NO
proof of SK90_4.34.trs
# AProVE Commit ID: c69e44bd14796315568835c1ffa2502984884775 jera 20211004 unpublished


Termination w.r.t. Q of the given QTRS could be disproven:

(0) QTRS
(1) NonTerminationProof [COMPLETE, 0 ms]
(2) NO


----------------------------------------

(0)
Obligation:
Q restricted rewrite system:
The TRS R consists of the following rules:

   a(b(x)) -> b(b(a(a(x))))

Q is empty.

----------------------------------------

(1) NonTerminationProof (COMPLETE)
We used the non-termination processor [OPPELT08] to show that the SRS problem is infinite.

Found the self-embedding DerivationStructure: 
"a b b -> b b a b b a a"
a b b -> b b a b b a a
by OverlapClosure OC 2"a b -> b b a a
by original rule (OC 1)""a b -> b b a a
by original rule (OC 1)"

----------------------------------------

(2)
NO