关于ADS仿真显示窗口中的问题

hpeesofsim (*) 2008.500 Jan 22 2008 (built: 01/22/08 22:02:45)
Copyright Agilent Technologies, 1989-2008.
Message from hpeesofsim during netlist parsing.
    Booting of Freescale RF Power Kit ADS2008U2v1p3 was successful！
HB HB2[1] <F:\ADSproject\Feescal\MD7IC2050N_prj\networks\Broadband_IMD_Sweep_Line>
Krylov-HB: 1201 freqs, 4096 time-samples.
    Switching to source-stepping...
    Attempting solution at `sourceLevel' value of 0.5:
    *** Solution FAILED for `sourceLevel' value of 0.5.
    Attempting solution at `sourceLevel' value of 0.25:
    *** Solution FAILED for `sourceLevel' value of 0.25.
    Attempting solution at `sourceLevel' value of 0.125:
    Solution succeeded for `sourceLevel' value of 0.125.
    Attempting solution at `sourceLevel' value of 0.375:
    *** Solution FAILED for `sourceLevel' value of 0.375.
    Attempting solution at `sourceLevel' value of 0.25:
    Solution succeeded for `sourceLevel' value of 0.25.
    Attempting solution at `sourceLevel' value of 0.5:
    *** Solution FAILED for `sourceLevel' value of 0.5.
    Attempting solution at `sourceLevel' value of 0.375:
    *** Solution FAILED for `sourceLevel' value of 0.375.
    Attempting solution at `sourceLevel' value of 0.3125:
    Solution succeeded for `sourceLevel' value of 0.3125.
    Attempting solution at `sourceLevel' value of 0.4375:
    Solution succeeded for `sourceLevel' value of 0.4375.
    Attempting solution at `sourceLevel' value of 0.6875:
    *** Solution FAILED for `sourceLevel' value of 0.6875.
    Attempting solution at `sourceLevel' value of 0.5625:
---------------------------------------
----- Simulator Abort in Progress -----
-----         Please Wait         -----
---------------------------------------
Flushing data buffers for abort ... please wait ...
... (this could take up to several minutes, depending on simulation size) ...
以上为仿真窗口中的数据，里面显示“FAILED”和“succeeded”，后面的数据代表什么啊，如0.5一直到后面的0.5625:。谢谢了哈