YES

This TRS is terminating using the deltarestricted interpretation 
0(delta2) =  + 0 + 0*delta2
s(delta1, X2) =  + 1*X2 + 2 + 0*X2*delta1 + 3*delta1
average(delta0, X1, X0) =  + 1*X0 + 1*X1 + 0 + 0*X0*delta0 + 1*X1*delta0 + 2*delta0
s_tau_1(delta1) =  + 1(delta1/(1 + 0 * delta1))
average_tau_1(delta0) =  + 1(delta0/(1 + 1 * delta0))
average_tau_2(delta0) =  + 1(delta0/(1 + 0 * delta0))

Time: 59.411762 seconds
SUCCESS

Statistics:
Number of monomials: 2106
Last formula building started for bound 3
Last SAT solving started for bound 3