ADS 作load pull过程中碰到的问题,请教！

Attempting solution at `real_indexs11' value of -0.71249843993045492:
    *** Solution FAILED for `real_indexs11' value of -0.71249843993045492.
    Attempting solution at `real_indexs11' value of -0.71271027789537789:
    *** Solution FAILED for `real_indexs11' value of -0.71271027789537789.
    Attempting solution at `real_indexs11' value of -0.71281619687783937:
    Solution succeeded for `real_indexs11' value of -0.71281619687783937.
    Attempting solution at `real_indexs11' value of -0.7126043589129164:
    Solution succeeded for `real_indexs11' value of -0.7126043589129164.
上文是仿真结果中的信息,加粗斜体字部分是什么原因?是不是我参数设置的不当?
有什么建议和解决办法?
请不吝赐教！