Certification Problem
Input (TPDB TRS_Standard/Der95/03)
The rewrite relation of the following TRS is considered.
f
(
f
(
x
))
→
g
(
f
(
x
))
(1)
Property / Task
Prove or disprove termination.
Answer / Result
Yes.
Proof (by AProVE @ termCOMP 2023)
1 Bounds
The given TRS is match-(raise)-bounded by 1. This is shown by the following automaton.
final states:
{0, 1}
transitions:
f
0
(0)
→
0
f
0
(1)
→
0
g
0
(0)
→
1
g
0
(1)
→
1
f
1
(0)
→
2
g
1
(2)
→
0
f
1
(1)
→
2
0
→
2