def main(benchexec=None, argv=None):
    """
    The main method of BenchExec for use in a command-line script.
    In addition to calling benchexec.start(argv),
    it also handles signals and keyboard interrupts.
    It does not return but calls sys.exit().
    @param benchexec: An instance of BenchExec for executing benchmarks.
    @param argv: optionally the list of command-line options to use
    """
    if sys.version_info < (3,):
        sys.exit('benchexec needs Python 3 to run.')
    # ignore SIGTERM
    signal.signal(signal.SIGTERM, signal_handler_ignore)
    try:
        if not benchexec:
            benchexec = BenchExec()
        sys.exit(benchexec.start(argv or sys.argv))
    except BenchExecException as e:
        sys.exit('Error: ' + str(e))
    except KeyboardInterrupt: # this block is reached, when interrupt is thrown before or after a run set execution
        benchexec.stop()
        util.printOut("\n\nScript was interrupted by user, some runs may not be done.")