MAYBE
The TRS could not be proven terminating. The proof attempt took 2478 ms.
Problem 1 remains open; application of the following processors failed [DependencyGraph (34ms), SubtermCriterion (1ms), DependencyGraph (7ms), PolynomialLinearRange4iUR (322ms), DependencyGraph (4ms), PolynomialLinearRange8NegiUR (740ms), DependencyGraph (5ms), ReductionPairSAT (1154ms), DependencyGraph (4ms), SizeChangePrinciple (9ms)].
app#(app(app(comp, f), g), x) | → | app#(f, app(g, x)) | app#(twice, f) | → | app#(app(comp, f), f) | |
app#(app(app(comp, f), g), x) | → | app#(g, x) | app#(twice, f) | → | app#(comp, f) |
app(app(app(comp, f), g), x) | → | app(f, app(g, x)) | app(twice, f) | → | app(app(comp, f), f) |
Termination of terms over the following signature is verified: app, comp, twice