Certification Problem

Input (TPDB TRS_Innermost/Mixed_innermost/bn111)

The rewrite relation of the following TRS is considered.

f(f(X,Y),Z) f(X,f(Y,Z)) (1)
f(X,f(Y,Z)) f(Y,Y) (2)
The evaluation strategy is innermost.

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.
f#(f(X,Y),Z) f#(X,f(Y,Z)) (3)
f#(f(X,Y),Z) f#(Y,Z) (4)
f#(X,f(Y,Z)) f#(Y,Y) (5)

1.1 Dependency Graph Processor

The dependency pairs are split into 0 components.