YES

This TRS is terminating using the restricteddeltasimple interpretation 
d(delta9) =  + 0 + 0*delta9
b(delta8) =  + 2 + 0*delta8
c(delta7) =  + 0 + 3*delta7
a(delta6) =  + 0 + 0*delta6
f(delta5, X3, X2) =  + 0*X2 + 0*X3 + 0 + 3*X2*delta5 + 1*X3*delta5 + 0*delta5
f_tau_1(delta5) =  + 1(delta5/(0 + 1 * delta5))
f_tau_2(delta5) =  + 1(delta5/(0 + 3 * delta5))

Time: 0.023042 seconds
SUCCESS

Statistics:
Number of monomials: 30
Last formula building started for bound 3
Last SAT solving started for bound 3