{"claim_boundary":"Two physical hosts exchange canonical F451 leases/results over SSH. A remote process exits with 86, the durable application controller re-fences all in-flight cubes, and a surviving remote process wins SAT. This is not a new MPI/ULFM latency, solver-speedup or coverage result; physical ULFM communicator repair remains supported by F447 evidence.","elapsed_ms":9001,"evidence_level":"E-crosshost-application-transport","local_host":"cuda-ke","oracle_sha256":"eb7f674adae0948f4dbb313fc2ee5ef397c70a922784e9b147ea53ec269423c0","remote":"root@down.kew.ac","remote_host":"vultr","remote_python":"Python 3.14.4","remote_worker_sha256":"ec32fbbebaeb52428b0a9af1e283b0bc5c2afd1b267d6b37ef61d9c4b908dc59","rounds":3,"schema":"symcc-f451-distributed-crosshost-oracle-v1","trials":[{"active_work_after":0,"attempts":3,"cancelled_peers":2,"completed_cubes":1,"failed_endpoints":["remote-failed"],"local_host":"cuda-ke","physical_hosts":2,"recovered_cubes":3,"recovery_queue_after":0,"remote_failure_exit":86,"remote_host":"vultr","remote_lease_sha256":"5bea89c5e94d16fdd738664fe8b77bd70cda68c2ca4c83337ce7c160b73b44bc","remote_response_sha256":"d3ad238a630bc94570337fa1d1551322af0c6c0bc2407fbd1d1700d2a12b2fbb","requeued_cubes":3,"result":"sat","round":0,"surviving_endpoints":["local-survivor","remote-survivor"],"target_generation":1},{"active_work_after":0,"attempts":3,"cancelled_peers":2,"completed_cubes":1,"failed_endpoints":["remote-failed"],"local_host":"cuda-ke","physical_hosts":2,"recovered_cubes":3,"recovery_queue_after":0,"remote_failure_exit":86,"remote_host":"vultr","remote_lease_sha256":"81337dc5010332ff878b055af139b48a2c8bc71b9c4ef7428cc90ade5cd78611","remote_response_sha256":"85444cd6d19c3e42d6feeba32aa52c7875c1f631ecc550c7d17f1c3755e91724","requeued_cubes":3,"result":"sat","round":1,"surviving_endpoints":["local-survivor","remote-survivor"],"target_generation":1},{"active_work_after":0,"attempts":3,"cancelled_peers":2,"completed_cubes":1,"failed_endpoints":["remote-failed"],"local_host":"cuda-ke","physical_hosts":2,"recovered_cubes":3,"recovery_queue_after":0,"remote_failure_exit":86,"remote_host":"vultr","remote_lease_sha256":"5295b2e3b985987ad7171656ffa89161bccd6aa0ce28303a55ea8cfd3b42dfd7","remote_response_sha256":"8f18d3951adea2032cfd04a7d4819a4b27148ca680f0d870205f3c69b057adea","requeued_cubes":3,"result":"sat","round":2,"surviving_endpoints":["local-survivor","remote-survivor"],"target_generation":1}]}