{
  "tm": "1RB0RD_1LC0RA_---1RD_1RA1LE_1RC0LF_1LE0LB",
  "label": "C2-552",
  "status": "KILLED_HALT",
  "stage": "done",
  "updated": "2026-10-13",
  "reason": "check_kill --halt PASS, independently re-verified",
  "halt_steps": {
    "exact": "176522930997643289094015905898381767890130463",
    "approx": "1.765e44",
    "convention": "steps including the halting transition (tools/sim convention); busycoq halts_in n = exact - 1",
    "busycoq_halts_in_n": "176522930997643289094015905898381767890130462",
    "proven_in_coq": false,
    "basis": "computed from per-rule step formulas summed over the same run (work/steps_exact/, exact_steps.json); formulas exact on all 276,427 increments to 1e11 and on all 53,973 single-stepped increments (reduced tapes); the .v proves halts tm c0 only",
    "lower_bound": "87364406466050439442427007228199699615332500",
    "halting_increment_after_step342": "11631266794472450654093",
    "resets_before_halt": 82
  },
  "check_kill": {
    "result": "PASS",
    "mode": "halt",
    "sha256": "198b30225e7ccff843808791746c4351a52277da10691ee5791a1cf205712805",
    "compile_s": 70.0,
    "coqchk_s": 536.5,
    "coqchk_cap_s": 600,
    "assumptions": [
      "functional_extensionality_dep"
    ],
    "log": "submission/check_kill.txt",
    "checked_at": "2026-10-13T17:33:35Z",
    "raw": [
      "rocq/check_kill_2026-10-13_fix1.out"
    ]
  },
  "funded": {
    "option": "class2_closeout",
    "date": "2026-10-12"
  },
  "pr": "https://github.com/ccz181078/busycoq/pull/18",
  "pr_state": "merged",
  "pr_comments": 0,
  "posted": "2026-10-13 (bbchallenge Discord, by Dennis)",
  "pr_file": "verify/Skelet1LikeC2Halt_1RB0RD_1LC0RA.v",
  "pr_merged_at": "2026-10-14T06:20:40Z",
  "pr_merged_by": "ccz181078",
  "pr_merge_commit": "cdaf693"
}