Certification Problem
Input (TPDB TRS_Standard/Transformed_CSR_04/Ex1_2_Luc02c_L)
The rewrite relation of the following TRS is considered.
|
2nd(cons(X)) |
→ |
Y |
(1) |
|
from(X) |
→ |
cons(X) |
(2) |
Property / Task
Prove or disprove termination.Answer / Result
No.Proof (by ttt2 @ termCOMP 2023)
1 Loop
The following loop proves nontermination.
| t0
|
= |
2nd(cons(X)) |
|
→
|
2nd(cons(X)) |
|
= |
t1
|
where t1 =
t0σ
and
σ =
{Y/2nd(cons(X))}