[PASS] membership: 4 members, f=1, quorum 3  (n=4 f=1 quorum=3)
[PASS] membership: configuration_hash recomputed  (b7b09dfceba604983ee3b27c35beaa9e62e372afb42de7688a5ae5152c02c0ec)
[PASS] cain-byz-node-2: reports the same configuration_hash
[PASS] cain-byz-node-2: 17 COMMIT_QC + 17 PREPARE_QC verified, chain contiguous from genesis  (head df34a7fb07d212f4)
[PASS] cain-byz-node-2: stated head_decision_hash matches the folded chain
[PASS] cain-byz-node-3: reports the same configuration_hash
[PASS] cain-byz-node-3: 17 COMMIT_QC + 17 PREPARE_QC verified, chain contiguous from genesis  (head df34a7fb07d212f4)
[PASS] cain-byz-node-3: stated head_decision_hash matches the folded chain
[PASS] cain-byz-node-4: reports the same configuration_hash
[PASS] cain-byz-node-4: 17 COMMIT_QC + 17 PREPARE_QC verified, chain contiguous from genesis  (head df34a7fb07d212f4)
[PASS] cain-byz-node-4: stated head_decision_hash matches the folded chain
[PASS] all nodes: identical decision chain (same sequence -> same digest -> same decision_hash)  (17 decisions)
[PASS] all nodes: identical application state hash after the run  (2c3fbf71794fbeac)
[PASS] run spans a view change (decisions committed in more than one view)  (views [0, 1])
[PASS] VIEW_CHANGE_QC for view 1: signatures + quorum
[PASS] AuthorizationCertificate seq 17 issued by cain-byz-node-2
[PASS] AuthorizationCertificate seq 17 issued by cain-byz-node-3
[PASS] AuthorizationCertificate seq 17 issued by cain-byz-node-4
[PASS] negative control: forged signature -> rejected  (signature of 'cain-byz-node-2' does not verify)
[PASS] negative control: below quorum (hash recomputed) -> rejected  (2 distinct signers, need 3)
[PASS] negative control: COMMIT votes presented as PREPARE (domain separation) -> rejected  (vote from 'cain-byz-node-2' is a COMMIT by 'cain-byz-node-2', need PREPARE)
[PASS] negative control: different decision digest (hash recomputed) -> rejected  (vote from 'cain-byz-node-2' is for another (sequence, digest))
[PASS] negative control: cross-cluster replay -> rejected  (wrong cluster or epoch)
[PASS] negative control: cross-view replay (hash recomputed) -> rejected  (vote from 'cain-byz-node-2' is for view 1)
[PASS] negative control: vote content altered after signing -> rejected  (signature of 'cain-byz-node-2' does not verify)

ALL_CHECKS_PASSED: 25/25 checks, 102 certificates verified