Can not see the command window after 1 day runnig

my program have a long run time. I began to run it yesterday and now I can not see the command window and editor by clicking on them on the task bar. I tried the "switch to" button of the task manager, too.

The program displays some messages on the command window, when it is running. This determines the current step of the program.

How can I find out whether my program runs correctly, or it trapped in infinite loop or the matlab crashes.

Both of cpu cores are busy, cpu usage is between 50-70 percent, and matlab occupied 1,658,044 K of memory.