begin
    while testIndex < testCases.length #  End when every testcase has been tested
        if(Thread.list.count<threadLimit+1) # if thread slot available
            th[testIndex] = Thread.new(testIndex){ |i| # Create Thread
                # get testCase input
                # initiate driver and run test
                # I have wraper for this, and there is no thread inside it, just single thread code
            }
        end
    end

    th.each{|t|
        if(!t.nil?)
            t.join # Wait unfinished thread
        end
    }
rescue Exception => e
    puts "MESSAGE: #{e}"
end