iteration_num: 1
solve_status: OPTIMAL
objective_value= -311788.7306369537
End No. 1iteration
iteration_num: 2
solve_status: OPTIMAL
objective_value= -311266.4548619014
End No. 2iteration
iteration_num: 3
solve_status: OPTIMAL
objective_value= -310860.79401965253
End No. 3iteration
END
