1 QA output created by 197
2 invocation 1: at startup, next free file descriptor = 3 at exit, next free file descriptor = OK
3 invocation 2: at startup, next free file descriptor = 3 at exec, next free file descriptor = OK
4 invocation 3: at startup, next free file descriptor = 3 at exec, next free file descriptor = OK
5 invocation 4: at startup, next free file descriptor = 3 at exec, next free file descriptor = OK