Does a safety-critical system possess ';factory test cases'; ? Does the safety-critical system possess a?

simulator that can exercise the safety critical system ? Has the simulator been checked against the test cases. (If an accident occurred, an obvious question would be ';Would we have noticed this problem if we'd run the test cases in the simulator ?';)Does a safety-critical system possess ';factory test cases'; ? Does the safety-critical system possess a?
And then if yes, not at this time, but yes maybe at all one piece want to growl first anyway however to ill put under then top can send no. Put on two coats, that should clear it up.

makeup base