Certification Problem

Input (TPDB SRS_Standard/Waldmann_07_size12/size-12-alpha-3-num-451)

The rewrite relation of the following TRS is considered.

a(x1) b(c(x1)) (1)
a(c(b(x1))) b(a(a(c(x1)))) (2)
b(b(x1)) x1 (3)

Property / Task

Prove or disprove termination.

Answer / Result

Yes.

Proof (by AProVE @ termCOMP 2023)

1 Dependency Pair Transformation

The following set of initial dependency pairs has been identified.
a#(x1) b#(c(x1)) (4)
a#(c(b(x1))) b#(a(a(c(x1)))) (5)
a#(c(b(x1))) a#(a(c(x1))) (6)
a#(c(b(x1))) a#(c(x1)) (7)

1.1 Dependency Graph Processor

The dependency pairs are split into 1 component.