[RUN] rebol -q -w -s ackermann.rebol 4 -- FAIL (file does not exist)
[RUN] rebol -q -w -s ackermann.rebol 5 -- FAIL (file does not exist)
[RUN] rebol -q -w -s ackermann.rebol 6 -- FAIL (file does not exist)
[RUN] rebol -q -w -s ackermann.rebol 7 -- FAIL (file does not exist)
[RUN] rebol -q -w -s ackermann.rebol 8 -- FAIL (file does not exist)