NO
proof of /export/starexec/sandbox2/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# AProVE Commit ID: 794c25de1cacf0d048858bcd21c9a779e1221865 marcel 20200619 unpublished dirty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, 196 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(x1) -> b(x1)
   b(a(c(x1))) -> c(c(a(b(a(x1)))))
   c(x1) -> 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: 
"b a c c c c -> c b a c c c c a b a"
b a c c c c -> c b a c c c c a b a
by OverlapClosure OC 2"b a c c c -> c b a c c b a
by OverlapClosure OC 3"b a c c c -> c b a c c a b a
by OverlapClosure OC 2"b a c c -> c b a b a
by OverlapClosure OC 3"b a c c -> c b c a b a
by OverlapClosure OC 3"b a c c -> c a c a b a
by OverlapClosure OC 3"b a c c -> c a c c a b a
by OverlapClosure OC 2"b a c -> c a b a
by OverlapClosure OC 3"b a c -> c c a b a
by original rule (OC 1)""c -> 
by original rule (OC 1)"""b a c -> c c a b a
by original rule (OC 1)"""c -> 
by original rule (OC 1)"""a -> b
by original rule (OC 1)"""c -> 
by original rule (OC 1)"""b a c -> c c a b a
by original rule (OC 1)"""a -> 
by original rule (OC 1)"""b a c -> c c a b a
by original rule (OC 1)"

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(2)
NO