YES

This TRS is terminating using the restricteddeltasimple interpretation 
mark(delta9, X7) =  + 1*X7 + 0 + 2*X7*delta9 + 1*delta9
a(delta8) =  + 0 + 0*delta8
f(delta7, X6) =  + 1*X6 + 2 + 2*X6*delta7 + 1*delta7
g(delta6, X5) =  + 0*X5 + 0 + 1*X5*delta6 + 0*delta6
a__f(delta5, X4) =  + 1*X4 + 2 + 2*X4*delta5 + 2*delta5
mark_tau_1(delta9) =  + 1(delta9/(1 + 2 * delta9))
f_tau_1(delta7) =  + 1(delta7/(1 + 2 * delta7))
g_tau_1(delta6) =  + 1(delta6/(0 + 1 * delta6))
a__f_tau_1(delta5) =  + 1(delta5/(1 + 2 * delta5))

Time: 8.839932 seconds
SUCCESS

Statistics:
Number of monomials: 366
Last formula building started for bound 3
Last SAT solving started for bound 3