Term Rewriting System R:
[X, Y]
f(s(X)) -> f(X)
g(cons(0, Y)) -> g(Y)
g(cons(s(X), Y)) -> s(X)
h(cons(X, Y)) -> h(g(cons(X, Y)))
Termination of R to be shown.
R
↳Removing Redundant Rules
Removing the following rules from R which fullfill a polynomial ordering:
f(s(X)) -> f(X)
g(cons(0, Y)) -> g(Y)
where the Polynomial interpretation:
POL(0) | = 1 |
POL(g(x1)) | = x1 |
POL(cons(x1, x2)) | = x1 + x2 |
POL(s(x1)) | = 1 + x1 |
POL(h(x1)) | = 1 + x1 |
POL(f(x1)) | = x1 |
was used.
Not all Rules of R can be deleted, so we still have to regard a part of R.
R
↳RRRPolo
→TRS2
↳Removing Redundant Rules
Removing the following rules from R which fullfill a polynomial ordering:
g(cons(s(X), Y)) -> s(X)
where the Polynomial interpretation:
POL(g(x1)) | = x1 |
POL(cons(x1, x2)) | = 2·x1 + x2 |
POL(h(x1)) | = 1 + x1 |
POL(s(x1)) | = 1 + x1 |
was used.
Not all Rules of R can be deleted, so we still have to regard a part of R.
R
↳RRRPolo
→TRS2
↳RRRPolo
→TRS3
↳Overlay and local confluence Check
The TRS is overlay and locally confluent (all critical pairs are trivially joinable).Hence, we can switch to innermost.
R
↳RRRPolo
→TRS2
↳RRRPolo
→TRS3
↳OC
...
→TRS4
↳Dependency Pair Analysis
R contains the following Dependency Pairs:
H(cons(X, Y)) -> H(g(cons(X, Y)))
R contains no SCCs.
Termination of R successfully shown.
Duration:
0:00 minutes