NO
proof of /export/starexec/sandbox/benchmark/theBenchmark.xml
# AProVE Commit ID: 794c25de1cacf0d048858bcd21c9a779e1221865 marcel 20200619 unpublished dirty


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

(0) QTRS
(1) NonTerminationProof [COMPLETE, 8455 ms]
(2) NO


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

   a(x1) -> x1
   a(a(b(x1))) -> b(a(b(a(x1))))
   b(b(b(x1))) -> a(x1)

Q is empty.

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

Found the self-embedding DerivationStructure: 
"a a b a b a b a b a b a b -> a a b a b a b a b a b a b a"
a a b a b a b a b a b a b -> a a b a b a b a b a b a b a
by OverlapClosure OC 2"a a b a b a b a b a b -> a a b a b a b a b a a
by OverlapClosure OC 3"a a b a b a b a b a b -> a a b a b a a a b a
by OverlapClosure OC 3"a a b a b a b a b a b -> a a a a b a a b a
by OverlapClosure OC 3"a a b a b a b a b a b -> a a b b b a b a a b a
by OverlapClosure OC 3"a a b a b a b a b a b -> a a b b a a b a b a
by OverlapClosure OC 2"a a b a b a b a b -> a a b b a a a
by OverlapClosure OC 2"a a b a b -> a a b a
by OverlapClosure OC 3"a a b a b -> b b b a b a
by OverlapClosure OC 2"a a b -> b b a
by OverlapClosure OC 3"a a b -> b a b a
by original rule (OC 1)""a -> 
by original rule (OC 1)"""a a b -> b a b a
by original rule (OC 1)"""b b b -> a
by original rule (OC 1)"""a a b a b -> b a a a
by OverlapClosure OC 3"a a b a b -> b a b b b a
by OverlapClosure OC 2"a a b -> b a b a
by original rule (OC 1)""a a b -> b b a
by OverlapClosure OC 3"a a b -> b a b a
by original rule (OC 1)""a -> 
by original rule (OC 1)""""b b b -> a
by original rule (OC 1)""""a a b -> b a b a
by original rule (OC 1)"""a a b -> b a b a
by original rule (OC 1)"""b b b -> a
by original rule (OC 1)"""a a b -> b a b a
by original rule (OC 1)"""a a b -> b a b a
by original rule (OC 1)"""a a b -> b a b a
by original rule (OC 1)"

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(2)
NO