iteration_num: 1
solve_status: OPTIMAL
objective_value= -311810.70872593566
End No. 1iteration
iteration_num: 2
solve_status: OPTIMAL
objective_value= -311576.0237480491
End No. 2iteration
iteration_num: 3
solve_status: OPTIMAL
objective_value= -311575.98774453386
End No. 3iteration
END
