checkOutput(true);
runNumber = 4;
try {
log("calling TestStackTrace.triggerMethod4");
Thread t1 = new TestThread(this, true);
Thread t2 = new TestThread(this, false);
t1.start();
t2.start();
t1.join();
t2.join();
log("called TestStackTrace.triggerMethod4");
} catch (Exception e) {
log(e);
}