YES Termination w.r.t. Q proof of /home/cern_httpd/provide/research/cycsrs/tpdb/TPDB-d9b80194f163/SRS_Standard/Zantema_04/z053.srs

(0) Obligation:

Q restricted rewrite system:
The TRS R consists of the following rules:

b(a(a(b(a(b(x)))))) → a(b(a(a(b(b(a(x)))))))

Q is empty.

(1) RFCMatchBoundsTRSProof (EQUIVALENT transformation)

Termination of the TRS R could be shown with a Match Bound [MATCHBOUNDS1,MATCHBOUNDS2] of 2. This implies Q-termination of R.
The following rules were used to construct the certificate:

b(a(a(b(a(b(x)))))) → a(b(a(a(b(b(a(x)))))))

The certificate found is represented by the following graph.

The certificate consists of the following enumerated nodes:

3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28

Node 3 is start node and node 4 is final node.

Those nodes are connected through the following edges:

  • 3 to 5 labelled a_1(0)
  • 4 to 4 labelled #_1(0)
  • 5 to 6 labelled b_1(0)
  • 5 to 17 labelled a_1(1)
  • 6 to 7 labelled a_1(0)
  • 7 to 8 labelled a_1(0)
  • 8 to 9 labelled b_1(0)
  • 9 to 10 labelled b_1(0)
  • 9 to 11 labelled a_1(1)
  • 10 to 4 labelled a_1(0)
  • 11 to 12 labelled b_1(1)
  • 11 to 23 labelled a_1(2)
  • 12 to 13 labelled a_1(1)
  • 13 to 14 labelled a_1(1)
  • 14 to 15 labelled b_1(1)
  • 15 to 16 labelled b_1(1)
  • 15 to 11 labelled a_1(1)
  • 16 to 4 labelled a_1(1)
  • 17 to 18 labelled b_1(1)
  • 18 to 19 labelled a_1(1)
  • 19 to 20 labelled a_1(1)
  • 20 to 21 labelled b_1(1)
  • 21 to 22 labelled b_1(1)
  • 22 to 12 labelled a_1(1)
  • 23 to 24 labelled b_1(2)
  • 24 to 25 labelled a_1(2)
  • 25 to 26 labelled a_1(2)
  • 26 to 27 labelled b_1(2)
  • 27 to 28 labelled b_1(2)
  • 28 to 12 labelled a_1(2)

(2) YES