Termination w.r.t. Q of the given QTRS could not be shown:

(0) Obligation:

Q restricted rewrite system:
The TRS R consists of the following rules:

f(n__b, X, n__c) → f(X, c, X)
c → b
b → n__b
c → n__c
activate(n__b) → b
activate(n__c) → c
activate(X) → X

Q is empty.