YES Termination w.r.t. Q proof of /home/cern_httpd/provide/research/cycsrs/tpdb/TPDB-d9b80194f163/SRS_Standard/Trafo_06/un12.srs

(0) Obligation:

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

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

Q is empty.

(1) QTRS Reverse (EQUIVALENT transformation)

We applied the QTRS Reverse Processor [REVERSE].

(2) Obligation:

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

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

Q is empty.

(3) Strip Symbols Proof (SOUND transformation)

We were given the following TRS:

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

By stripping symbols from the only rule of the system, we obtained the following TRS [ENDRULLIS]:

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

(4) Obligation:

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

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

Q is empty.

(5) 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:

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

The certificate found is represented by the following graph.

The certificate consists of the following enumerated nodes:

31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88

Node 31 is start node and node 32 is final node.

Those nodes are connected through the following edges:

  • 31 to 33 labelled b_1(0)
  • 32 to 32 labelled #_1(0)
  • 33 to 34 labelled a_1(0)
  • 34 to 35 labelled b_1(0)
  • 35 to 36 labelled a_1(0)
  • 36 to 37 labelled b_1(0)
  • 37 to 38 labelled b_1(0)
  • 38 to 39 labelled b_1(0)
  • 39 to 40 labelled a_1(0)
  • 39 to 67 labelled b_1(1)
  • 40 to 41 labelled b_1(0)
  • 41 to 42 labelled a_1(0)
  • 41 to 44 labelled b_1(1)
  • 42 to 43 labelled b_1(0)
  • 43 to 32 labelled b_1(0)
  • 44 to 45 labelled a_1(1)
  • 45 to 46 labelled b_1(1)
  • 46 to 47 labelled a_1(1)
  • 47 to 48 labelled b_1(1)
  • 48 to 49 labelled b_1(1)
  • 49 to 50 labelled b_1(1)
  • 50 to 51 labelled a_1(1)
  • 50 to 78 labelled b_1(2)
  • 51 to 52 labelled b_1(1)
  • 52 to 53 labelled a_1(1)
  • 52 to 44 labelled b_1(1)
  • 53 to 54 labelled b_1(1)
  • 54 to 32 labelled b_1(1)
  • 67 to 68 labelled a_1(1)
  • 68 to 69 labelled b_1(1)
  • 69 to 70 labelled a_1(1)
  • 70 to 71 labelled b_1(1)
  • 71 to 72 labelled b_1(1)
  • 72 to 73 labelled b_1(1)
  • 73 to 74 labelled a_1(1)
  • 73 to 78 labelled b_1(2)
  • 74 to 75 labelled b_1(1)
  • 75 to 76 labelled a_1(1)
  • 75 to 44 labelled b_1(1)
  • 76 to 77 labelled b_1(1)
  • 77 to 50 labelled b_1(1)
  • 78 to 79 labelled a_1(2)
  • 79 to 80 labelled b_1(2)
  • 80 to 81 labelled a_1(2)
  • 81 to 82 labelled b_1(2)
  • 82 to 83 labelled b_1(2)
  • 83 to 84 labelled b_1(2)
  • 84 to 85 labelled a_1(2)
  • 84 to 78 labelled b_1(2)
  • 85 to 86 labelled b_1(2)
  • 86 to 87 labelled a_1(2)
  • 86 to 44 labelled b_1(1)
  • 87 to 88 labelled b_1(2)
  • 88 to 50 labelled b_1(2)

(6) YES