verify: ihello: check: deadlock: ok
verify: ihello: check: unreachable: ok
verify: ihello: check: livelock: ok
verify: ihello: check: deterministic: ok
verify: ichoice: check: deadlock: ok
verify: ichoice: check: unreachable: ok
verify: ichoice: check: livelock: ok
verify: ichoice: check: deterministic: ok
verify: choice_invariant: check: deterministic: ok
verify: choice_invariant: check: illegal: ok
verify: choice_invariant: check: deadlock: ok
verify: choice_invariant: check: unreachable: ok
verify: choice_invariant: check: livelock: ok
verify: choice_invariant: check: compliance: ok
