verify: ihello: check: deadlock: ok
verify: ihello: check: unreachable: ok
verify: ihello: check: livelock: ok
verify: ihello: check: deterministic: ok
verify: defer_nested: check: deterministic: ok
verify: defer_nested: check: illegal: ok
verify: defer_nested: check: deadlock: ok
verify: defer_nested: check: unreachable: ok
verify: defer_nested: check: livelock: ok
verify: defer_nested: check: compliance: ok
