NCSIM stops simulation without giving any notice.

I want to simulate a scanvector set via an instantiated scantest module in my testbench. The module takes every 8 usec a vector from the vectorset which is a seperate rom.cde file.

The main part for the execution loop which is part of my verilog module is responsible for picking up a next vector from the rom.cde file.

I depicted hereby the loop:

***********************************************************************************************************************
  for (TBvector = 1; TBvector <= 693; TBvector = TBvector + 1) begin  // trigger comment display
    #0 if (TBshift_vector==1)  TBnormal_vector=0;
       if (TBnormal_vector==1) TBshift_vector=0;

    if (TBrepeat1_i > TBrom1_repeat) begin
      TBindex1 = TBindex1 + 1;     // trigger $getpattern for ROM 1
      #0 TBperiod = TBw_per[TBselect];
      TBrepeat1_i = 1;
    end
    if (TBrepeat2_i > TBrom2_repeat) begin
      TBindex2 = TBindex2 + 1;     // trigger $getpattern for ROM 2
      TBrepeat2_i = 1;
    end

    #0;
    -> TBcycleStart; // trigger waveform generators
    #TBperiod;

    TBrepeat1_i = TBrepeat1_i + 1;
    TBrepeat2_i = TBrepeat2_i + 1;
    if (TBshift_vector >0) TBshift_vector  = TBshift_vector + 1;
    if (TBnormal_vector>0) TBnormal_vector = TBnormal_vector + 1;
   end

***********************************************************************************************************************

As you can see the loop should be executed 693 times, however after 125 the simulation stops at the red line indicating that an event is fired. It seems that at the end of vector 125 no event takes place anymore and the simulation stops without giving any fkind of information what the reason is that the loop is abandoned.

I have no disk space issues and in the remaing part of the scantest driver there is no interruption statement to quit simulation. Also my ncsim.log file does not give error, warning or failure information, only "Ran until 1067896360588 FS + 0"

Question: How can I get information from my ncsim simulation what the reason could be that the simulator stops at this point in time. Remind also that the max. simulation time for the simulator to run was set at 1 sec!