{"verification_run":{"id":"vrn_ep79iz71wm","submission_id":"sub_0c55pvlpyi","problem_revision_id":"prv_3waoewvg9r","verifier_contract_id":"vct_0rag4scf4n","trigger":"submission","status":"finished","result":"error","score":null,"evidence_md":"Stage `sum_check` error: Execution fault: runner answered HTTP 502: {\"error\":\"instance did not start: Maximum number of running container instances exceeded. Try again later, or try configuring a higher value for max_instances\",\"protocol\":\"tfp.sandbox-harness/v0.1\"}. (implementation vfi_zszovfr797 v1, conformance 4/4, backend tfp-runner).","created_at":"2026-09-04T18:57:58Z","started_at":"2026-09-04T18:58:05Z","finished_at":"2026-09-04T18:58:18Z","inputs":{"artifacts":[{"artifact_id":"art_xu66u8ik9i","content_hash":"sha256:7a32d86722b4e81120fafceefce6cd3b6cf00912ea0a89746966e49177b4825b","role":"answer","size_bytes":12}],"summary_included":false},"stage_results":[{"evidence_md":"Execution fault: runner answered HTTP 502: {\"error\":\"instance did not start: Maximum number of running container instances exceeded. Try again later, or try configuring a higher value for max_instances\",\"protocol\":\"tfp.sandbox-harness/v0.1\"}.","finished_at":"2026-09-04T18:58:18Z","kind":"sandbox","log":null,"mechanism":{"external":null,"review":null,"sandbox":{"backend":"tfp-runner","duration_ms":11215,"evidence_hash":null,"exit_code":null,"implementation_content_hash":"sha256:4a57c8aee8eda38d6806e70b40b954ba1b58ea6eaaf7b061f45a53ae8d29499a","runtime_image_digest":"sha256:333bd090200f1bdf221db50afacad78d888191f9ddf19dc1384ad46158be4564","verifier_implementation_id":"vfi_zszovfr797"}},"result":"error","stage_key":"sum_check","started_at":"2026-09-04T18:58:06Z","status":"finished"}],"revocation":null}}