Certification Problem
Input (TPDB TRS_Standard/Transformed_CSR_04/Ex4_7_77_Bor03_L)
The rewrite relation of the following TRS is considered.
|
tail(cons(X)) |
→ |
XS |
(1) |
| zeros |
→ |
cons(0) |
(2) |
Property / Task
Prove or disprove termination.Answer / Result
No.Proof (by ttt2 @ termCOMP 2023)
1 Loop
The following loop proves nontermination.
| t0
|
= |
tail(cons(X)) |
|
→
|
tail(cons(X)) |
|
= |
t1
|
where t1 =
t0σ
and
σ =
{XS/tail(cons(X))}