MAYBE
The TRS could not be proven terminating. The proof attempt took 5869 ms.
Problem 1 remains open; application of the following processors failed [DependencyGraph (27ms), SubtermCriterion (2ms), DependencyGraph (13ms), PolynomialLinearRange4iUR (275ms), DependencyGraph (7ms), PolynomialLinearRange8NegiUR (1667ms), DependencyGraph (4ms), ReductionPairSAT (3781ms), DependencyGraph (4ms), SizeChangePrinciple (10ms)].
f#(x, f(a, y)) | → | f#(a, a) | f#(x, f(a, y)) | → | f#(f(a, a), a) | |
f#(x, f(a, y)) | → | f#(y, f(f(a, a), a)) | f#(x, f(a, y)) | → | f#(f(y, f(f(a, a), a)), x) |
f(x, f(a, y)) | → | f(f(y, f(f(a, a), a)), x) |
Termination of terms over the following signature is verified: f, a