verify: ihello: check: deadlock: ok
verify: ihello: check: unreachable: ok
verify: ihello: check: livelock: ok
verify: ihello: check: deterministic: ok
verify: hellobool: check: deterministic: ok
verify: hellobool: check: illegal: ok
verify: hellobool: check: deadlock: ok
verify: hellobool: check: unreachable: ok
verify: hellobool: check: livelock: ok
verify: hellobool: check: compliance: ok
verify: world: check: deterministic: ok
verify: world: check: illegal: ok
verify: world: check: deadlock: ok
verify: world: check: unreachable: ok
verify: world: check: livelock: ok
verify: world: check: compliance: ok
