time range in GENER and PARAM

Hi All,

The time steps shrinks to E-07 near the end of simulation period. I found this message in the OUTPUT file.

 QQQQQQQQQQ SUBROUTINE QU QQQQQQQQQQQ --- [KCYC,ITER] = [1452,  1]
 0.181708E+10 IS OUTSIDE THE RANGE  ( 0.0000E+00, 0.1817E+10)
 AT KCYC = 1452 EXCEED GENERATION TIME TABLE AT ELEME NTP1r74    (SOURCE C0871) -- WILL REDUCE DELTE
 TOUGH STATUS: Failed in MULTI. IGOOD=           3
 +++++++++ REDUCE TIME STEP AT ( 1452, 1) ++++++++ ++++++++   NEW DELT =0.512227E-07

I think 0.181708E+10 is from my last time in the GENER file (1.817078E+09, see below for a section of GENER file).

P1r74C0871    0    0    0    6     COM1  0.000E+00 0.000E+00 0.000E+00          
  0.000000E+00  1.796082E+09  1.796083E+09  1.798761E+09                        
  1.798762E+09  1.817078E+09                                                    
  0.000000E+00  0.000000E+00  2.616400E+00  2.616400E+00                        
  0.000000E+00  0.000000E+00    

But I don't understand where the value 0.1817E+10 is from. My TIMAX is 1.8200E+09 from the PARAM block, which is larger than the last time step in GENER file.

PARAM----1----*----2----*----3----*----4----*----5----*----6----*----7----*----8
 813 -16    99991111311 0020 02400  7  0           1.800E+00 0.000E+00          
 0.000E+001.8200E+09-1.000E+00                     9.810E+00 4.000E+00 1.000E+00

Can any one please point me the problem?

Thanks,

Haiyan