Certification Problem

Input (TPDB TRS_Outermost/Strategy_outermost_added_08/Ex1_Zan97_L)

The rewrite relation of the following TRS is considered.

g h (1)
c d (2)
h g (3)
The evaluation strategy is outermost

Property / Task

Prove or disprove termination.

Answer / Result

No.

Proof (by AProVE @ termCOMP 2023)

1 Loop

The following loop proves nontermination.

t0 = h
g
h
= t2
where t2 = t0