Termination Proof Script
Consider the TRS R consisting of the rewrite rules
|
| 1: |
|
f(a) |
→ f(c(a)) |
| 2: |
|
f(c(X)) |
→ X |
| 3: |
|
f(c(a)) |
→ f(d(b)) |
| 4: |
|
f(a) |
→ f(d(a)) |
| 5: |
|
f(d(X)) |
→ X |
| 6: |
|
f(c(b)) |
→ f(d(a)) |
| 7: |
|
e(g(X)) |
→ e(X) |
|
There are 5 dependency pairs:
|
| 8: |
|
F(a) |
→ F(c(a)) |
| 9: |
|
F(c(a)) |
→ F(d(b)) |
| 10: |
|
F(a) |
→ F(d(a)) |
| 11: |
|
F(c(b)) |
→ F(d(a)) |
| 12: |
|
E(g(X)) |
→ E(X) |
|
The approximated dependency graph contains one SCC:
{12}.
-
Consider the SCC {12}.
There are no usable rules.
By taking the AF π with
π(E) = 1 together with
the lexicographic path order with
empty precedence,
rule 12
is strictly decreasing.
Hence the TRS is terminating.
Tyrolean Termination Tool (0.01 seconds)
--- May 4, 2006