{"abstract":"The returned physical layout descriptor disagrees with the declared buffer mapping at tail_first.","category":"Raster memory layout","checks":6,"contract":"Mip levels below a threshold share one fixed-size tail page. Larger levels each own whole pages. Tail levels are packed in reverse level order, each with a two-byte tag; tail capacity is caller-provided and sufficient. Return the named intermediate layout descriptor and final address fields; all quantities are integer byte offsets unless explicitly stated.","contract_signature":"p","evaluation_group":"s3-raster-memory-layout-small-mip-tail-packing","failed_approach":"The attempted repair uses 0 and still violates the layout contract.","family":"s3-raster-memory-layout-small-mip-tail-packing-tail-first","id":"FA-52691","implementations":{"attempt":{"sha256":"9e2b11d92abd6b5e3334eb5add0fea38c64f37a39dd3380bbefef83469bde8cf","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(p):\n    p = dict(p)\n    tail_first = 0\n    large_pages = [(s+63)//64 for s in p[\"sizes\"][:tail_first]]\n    tail_levels = list(range(len(p[\"sizes\"])-1,tail_first-1,-1))\n    tail_origin = p[\"base\"]+sum(large_pages)*64\n    tail_spans = [p[\"sizes\"][i]+2 for i in tail_levels]\n    tail_map = {level:tail_origin+sum(tail_spans[:j])+2 for j,level in enumerate(tail_levels)}\n    large_map = {i:p[\"base\"]+sum(large_pages[:i])*64 for i in range(tail_first)}\n    selected = dict(large_map,**{}).get(p[\"level\"],tail_map.get(p[\"level\"],-1))\n    tail_used = sum(tail_spans)\n    allocation_end = tail_origin+p[\"tail_capacity\"]\n    return {'tail_first': tail_first, 'large_pages': large_pages, 'tail_levels': tail_levels, 'tail_origin': tail_origin, 'tail_spans': tail_spans, 'tail_map': tail_map, 'large_map': large_map, 'selected': selected, 'tail_used': tail_used, 'allocation_end': allocation_end}\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\ncases = {1: [({'sizes': [121, 61, 17, 5, 1], 'threshold': 32, 'page': 64, 'level': 0, 'base': 7, 'tail_capacity': 128}, {'tail_first': 2, 'large_pages': [2, 1], 'tail_levels': [4, 3, 2], 'tail_origin': 199, 'tail_spans': [3, 7, 19], 'tail_map': {4: 201, 3: 204, 2: 211}, 'large_map': {0: 7, 1: 135}, 'selected': 7, 'tail_used': 29, 'allocation_end': 327}), ({'sizes': [122, 62, 18, 6, 1], 'threshold': 32, 'page': 64, 'level': 1, 'base': 7, 'tail_capacity': 128}, {'tail_first': 2, 'large_pages': [2, 1], 'tail_levels': [4, 3, 2], 'tail_origin': 199, 'tail_spans': [3, 8, 20], 'tail_map': {4: 201, 3: 204, 2: 212}, 'large_map': {0: 7, 1: 135}, 'selected': 135, 'tail_used': 31, 'allocation_end': 327}), ({'sizes': [123, 63, 19, 7, 1], 'threshold': 32, 'page': 64, 'level': 2, 'base': 7, 'tail_capacity': 128}, {'tail_first': 2, 'large_pages': [2, 1], 'tail_levels': [4, 3, 2], 'tail_origin': 199, 'tail_spans': [3, 9, 21], 'tail_map': {4: 201, 3: 204, 2: 213}, 'large_map': {0: 7, 1: 135}, 'selected': 213, 'tail_used': 33, 'allocation_end': 327}), ({'sizes': [124, 64, 20, 8, 1], 'threshold': 32, 'page': 64, 'level': 3, 'base': 7, 'tail_capacity': 128}, {'tail_first': 2, 'large_pages': [2, 1], 'tail_levels': [4, 3, 2], 'tail_origin': 199, 'tail_spans': [3, 10, 22], 'tail_map': {4: 201, 3: 204, 2: 214}, 'large_map': {0: 7, 1: 135}, 'selected': 204, 'tail_used': 35, 'allocation_end': 327}), ({'sizes': [125, 65, 21, 9, 1], 'threshold': 32, 'page': 64, 'level': 4, 'base': 7, 'tail_capacity': 128}, {'tail_first': 2, 'large_pages': [2, 2], 'tail_levels': [4, 3, 2], 'tail_origin': 263, 'tail_spans': [3, 11, 23], 'tail_map': {4: 265, 3: 268, 2: 279}, 'large_map': {0: 7, 1: 135}, 'selected': 265, 'tail_used': 37, 'allocation_end': 391}), ({'sizes': [126, 66, 22, 10, 1], 'threshold': 32, 'page': 64, 'level': 0, 'base': 7, 'tail_capacity': 128}, {'tail_first': 2, 'large_pages': [2, 2], 'tail_levels': [4, 3, 2], 'tail_origin': 263, 'tail_spans': [3, 12, 24], 'tail_map': {4: 265, 3: 268, 2: 280}, 'large_map': {0: 7, 1: 135}, 'selected': 7, 'tail_used': 39, 'allocation_end': 391})], 2: [({'sizes': [122, 61, 17, 5, 1], 'threshold': 32, 'page': 64, 'level': 0, 'base': 14, 'tail_capacity': 128}, {'tail_first': 2, 'large_pages': [2, 1], 'tail_levels': [4, 3, 2], 'tail_origin': 206, 'tail_spans': [3, 7, 19], 'tail_map': {4: 208, 3: 211, 2: 218}, 'large_map': {0: 14, 1: 142}, 'selected': 14, 'tail_used': 29, 'allocation_end': 334}), ({'sizes': [123, 62, 18, 6, 1], 'threshold': 32, 'page': 64, 'level': 1, 'base': 14, 'tail_capacity': 128}, {'tail_first': 2, 'large_pages': [2, 1], 'tail_levels': [4, 3, 2], 'tail_origin': 206, 'tail_spans': [3, 8, 20], 'tail_map': {4: 208, 3: 211, 2: 219}, 'large_map': {0: 14, 1: 142}, 'selected': 142, 'tail_used': 31, 'allocation_end': 334}), ({'sizes': [124, 63, 19, 7, 1], 'threshold': 32, 'page': 64, 'level': 2, 'base': 14, 'tail_capacity': 128}, {'tail_first': 2, 'large_pages': [2, 1], 'tail_levels': [4, 3, 2], 'tail_origin': 206, 'tail_spans': [3, 9, 21], 'tail_map': {4: 208, 3: 211, 2: 220}, 'large_map': {0: 14, 1: 142}, 'selected': 220, 'tail_used': 33, 'allocation_end': 334}), ({'sizes': [125, 64, 20, 8, 1], 'threshold': 32, 'page': 64, 'level': 3, 'base': 14, 'tail_capacity': 128}, {'tail_first': 2, 'large_pages': [2, 1], 'tail_levels': [4, 3, 2], 'tail_origin': 206, 'tail_spans': [3, 10, 22], 'tail_map': {4: 208, 3: 211, 2: 221}, 'large_map': {0: 14, 1: 142}, 'selected': 211, 'tail_used': 35, 'allocation_end': 334}), ({'sizes': [126, 65, 21, 9, 1], 'threshold': 32, 'page': 64, 'level': 4, 'base': 14, 'tail_capacity': 128}, {'tail_first': 2, 'large_pages': [2, 2], 'tail_levels': [4, 3, 2], 'tail_origin': 270, 'tail_spans': [3, 11, 23], 'tail_map': {4: 272, 3: 275, 2: 286}, 'large_map': {0: 14, 1: 142}, 'selected': 272, 'tail_used': 37, 'allocation_end': 398}), ({'sizes': [127, 66, 22, 10, 1], 'threshold': 32, 'page': 64, 'level': 0, 'base': 14, 'tail_capacity': 128}, {'tail_first': 2, 'large_pages': [2, 2], 'tail_levels': [4, 3, 2], 'tail_origin': 270, 'tail_spans': [3, 12, 24], 'tail_map': {4: 272, 3: 275, 2: 287}, 'large_map': {0: 14, 1: 142}, 'selected': 14, 'tail_used': 39, 'allocation_end': 398})], 3: [({'sizes': [123, 61, 17, 5, 1], 'threshold': 32, 'page': 64, 'level': 0, 'base': 21, 'tail_capacity': 128}, {'tail_first': 2, 'large_pages': [2, 1], 'tail_levels': [4, 3, 2], 'tail_origin': 213, 'tail_spans': [3, 7, 19], 'tail_map': {4: 215, 3: 218, 2: 225}, 'large_map': {0: 21, 1: 149}, 'selected': 21, 'tail_used': 29, 'allocation_end': 341}), ({'sizes': [124, 62, 18, 6, 1], 'threshold': 32, 'page': 64, 'level': 1, 'base': 21, 'tail_capacity': 128}, {'tail_first': 2, 'large_pages': [2, 1], 'tail_levels': [4, 3, 2], 'tail_origin': 213, 'tail_spans': [3, 8, 20], 'tail_map': {4: 215, 3: 218, 2: 226}, 'large_map': {0: 21, 1: 149}, 'selected': 149, 'tail_used': 31, 'allocation_end': 341}), ({'sizes': [125, 63, 19, 7, 1], 'threshold': 32, 'page': 64, 'level': 2, 'base': 21, 'tail_capacity': 128}, {'tail_first': 2, 'large_pages': [2, 1], 'tail_levels': [4, 3, 2], 'tail_origin': 213, 'tail_spans': [3, 9, 21], 'tail_map': {4: 215, 3: 218, 2: 227}, 'large_map': {0: 21, 1: 149}, 'selected': 227, 'tail_used': 33, 'allocation_end': 341}), ({'sizes': [126, 64, 20, 8, 1], 'threshold': 32, 'page': 64, 'level': 3, 'base': 21, 'tail_capacity': 128}, {'tail_first': 2, 'large_pages': [2, 1], 'tail_levels': [4, 3, 2], 'tail_origin': 213, 'tail_spans': [3, 10, 22], 'tail_map': {4: 215, 3: 218, 2: 228}, 'large_map': {0: 21, 1: 149}, 'selected': 218, 'tail_used': 35, 'allocation_end': 341}), ({'sizes': [127, 65, 21, 9, 1], 'threshold': 32, 'page': 64, 'level': 4, 'base': 21, 'tail_capacity': 128}, {'tail_first': 2, 'large_pages': [2, 2], 'tail_levels': [4, 3, 2], 'tail_origin': 277, 'tail_spans': [3, 11, 23], 'tail_map': {4: 279, 3: 282, 2: 293}, 'large_map': {0: 21, 1: 149}, 'selected': 279, 'tail_used': 37, 'allocation_end': 405}), ({'sizes': [128, 66, 22, 10, 1], 'threshold': 32, 'page': 64, 'level': 0, 'base': 21, 'tail_capacity': 128}, {'tail_first': 2, 'large_pages': [2, 2], 'tail_levels': [4, 3, 2], 'tail_origin': 277, 'tail_spans': [3, 12, 24], 'tail_map': {4: 279, 3: 282, 2: 294}, 'large_map': {0: 21, 1: 149}, 'selected': 21, 'tail_used': 39, 'allocation_end': 405})], 4: [({'sizes': [124, 61, 17, 5, 1], 'threshold': 32, 'page': 64, 'level': 0, 'base': 28, 'tail_capacity': 128}, {'tail_first': 2, 'large_pages': [2, 1], 'tail_levels': [4, 3, 2], 'tail_origin': 220, 'tail_spans': [3, 7, 19], 'tail_map': {4: 222, 3: 225, 2: 232}, 'large_map': {0: 28, 1: 156}, 'selected': 28, 'tail_used': 29, 'allocation_end': 348}), ({'sizes': [125, 62, 18, 6, 1], 'threshold': 32, 'page': 64, 'level': 1, 'base': 28, 'tail_capacity': 128}, {'tail_first': 2, 'large_pages': [2, 1], 'tail_levels': [4, 3, 2], 'tail_origin': 220, 'tail_spans': [3, 8, 20], 'tail_map': {4: 222, 3: 225, 2: 233}, 'large_map': {0: 28, 1: 156}, 'selected': 156, 'tail_used': 31, 'allocation_end': 348}), ({'sizes': [126, 63, 19, 7, 1], 'threshold': 32, 'page': 64, 'level': 2, 'base': 28, 'tail_capacity': 128}, {'tail_first': 2, 'large_pages': [2, 1], 'tail_levels': [4, 3, 2], 'tail_origin': 220, 'tail_spans': [3, 9, 21], 'tail_map': {4: 222, 3: 225, 2: 234}, 'large_map': {0: 28, 1: 156}, 'selected': 234, 'tail_used': 33, 'allocation_end': 348}), ({'sizes': [127, 64, 20, 8, 1], 'threshold': 32, 'page': 64, 'level': 3, 'base': 28, 'tail_capacity': 128}, {'tail_first': 2, 'large_pages': [2, 1], 'tail_levels': [4, 3, 2], 'tail_origin': 220, 'tail_spans': [3, 10, 22], 'tail_map': {4: 222, 3: 225, 2: 235}, 'large_map': {0: 28, 1: 156}, 'selected': 225, 'tail_used': 35, 'allocation_end': 348}), ({'sizes': [128, 65, 21, 9, 1], 'threshold': 32, 'page': 64, 'level': 4, 'base': 28, 'tail_capacity': 128}, {'tail_first': 2, 'large_pages': [2, 2], 'tail_levels': [4, 3, 2], 'tail_origin': 284, 'tail_spans': [3, 11, 23], 'tail_map': {4: 286, 3: 289, 2: 300}, 'large_map': {0: 28, 1: 156}, 'selected': 286, 'tail_used': 37, 'allocation_end': 412}), ({'sizes': [129, 66, 22, 10, 1], 'threshold': 32, 'page': 64, 'level': 0, 'base': 28, 'tail_capacity': 128}, {'tail_first': 2, 'large_pages': [3, 2], 'tail_levels': [4, 3, 2], 'tail_origin': 348, 'tail_spans': [3, 12, 24], 'tail_map': {4: 350, 3: 353, 2: 365}, 'large_map': {0: 28, 1: 220}, 'selected': 28, 'tail_used': 39, 'allocation_end': 476})], 5: [({'sizes': [125, 61, 17, 5, 1], 'threshold': 32, 'page': 64, 'level': 0, 'base': 35, 'tail_capacity': 128}, {'tail_first': 2, 'large_pages': [2, 1], 'tail_levels': [4, 3, 2], 'tail_origin': 227, 'tail_spans': [3, 7, 19], 'tail_map': {4: 229, 3: 232, 2: 239}, 'large_map': {0: 35, 1: 163}, 'selected': 35, 'tail_used': 29, 'allocation_end': 355}), ({'sizes': [126, 62, 18, 6, 1], 'threshold': 32, 'page': 64, 'level': 1, 'base': 35, 'tail_capacity': 128}, {'tail_first': 2, 'large_pages': [2, 1], 'tail_levels': [4, 3, 2], 'tail_origin': 227, 'tail_spans': [3, 8, 20], 'tail_map': {4: 229, 3: 232, 2: 240}, 'large_map': {0: 35, 1: 163}, 'selected': 163, 'tail_used': 31, 'allocation_end': 355}), ({'sizes': [127, 63, 19, 7, 1], 'threshold': 32, 'page': 64, 'level': 2, 'base': 35, 'tail_capacity': 128}, {'tail_first': 2, 'large_pages': [2, 1], 'tail_levels': [4, 3, 2], 'tail_origin': 227, 'tail_spans': [3, 9, 21], 'tail_map': {4: 229, 3: 232, 2: 241}, 'large_map': {0: 35, 1: 163}, 'selected': 241, 'tail_used': 33, 'allocation_end': 355}), ({'sizes': [128, 64, 20, 8, 1], 'threshold': 32, 'page': 64, 'level': 3, 'base': 35, 'tail_capacity': 128}, {'tail_first': 2, 'large_pages': [2, 1], 'tail_levels': [4, 3, 2], 'tail_origin': 227, 'tail_spans': [3, 10, 22], 'tail_map': {4: 229, 3: 232, 2: 242}, 'large_map': {0: 35, 1: 163}, 'selected': 232, 'tail_used': 35, 'allocation_end': 355}), ({'sizes': [129, 65, 21, 9, 1], 'threshold': 32, 'page': 64, 'level': 4, 'base': 35, 'tail_capacity': 128}, {'tail_first': 2, 'large_pages': [3, 2], 'tail_levels': [4, 3, 2], 'tail_origin': 355, 'tail_spans': [3, 11, 23], 'tail_map': {4: 357, 3: 360, 2: 371}, 'large_map': {0: 35, 1: 227}, 'selected': 357, 'tail_used': 37, 'allocation_end': 483}), ({'sizes': [130, 66, 22, 10, 1], 'threshold': 32, 'page': 64, 'level': 0, 'base': 35, 'tail_capacity': 128}, {'tail_first': 2, 'large_pages': [3, 2], 'tail_levels': [4, 3, 2], 'tail_origin': 355, 'tail_spans': [3, 12, 24], 'tail_map': {4: 357, 3: 360, 2: 372}, 'large_map': {0: 35, 1: 227}, 'selected': 35, 'tail_used': 39, 'allocation_end': 483})]}\nfor i, (p, expected) in enumerate(cases[N]):\n    check(\"layout fixture \" + str(i + 1), solve(p), expected)\nprint(json.dumps({\"observations\": observations, \"passed\": all(x[\"passed\"] for x in observations)}, ensure_ascii=False))\nraise SystemExit(0 if all(x[\"passed\"] for x in observations) else 1)\n"},"broken":{"sha256":"9c13ac135240ea471b5ecfedc3816a25b4b9c8882713a5c10fd92adf5d24fe0b","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(p):\n    p = dict(p)\n    tail_first = next(i for i,s in enumerate(p[\"sizes\"]) if s<=64)\n    large_pages = [(s+63)//64 for s in p[\"sizes\"][:tail_first]]\n    tail_levels = list(range(len(p[\"sizes\"])-1,tail_first-1,-1))\n    tail_origin = p[\"base\"]+sum(large_pages)*64\n    tail_spans = [p[\"sizes\"][i]+2 for i in tail_levels]\n    tail_map = {level:tail_origin+sum(tail_spans[:j])+2 for j,level in enumerate(tail_levels)}\n    large_map = {i:p[\"base\"]+sum(large_pages[:i])*64 for i in range(tail_first)}\n    selected = dict(large_map,**{}).get(p[\"level\"],tail_map.get(p[\"level\"],-1))\n    tail_used = sum(tail_spans)\n    allocation_end = tail_origin+p[\"tail_capacity\"]\n    return {'tail_first': tail_first, 'large_pages': large_pages, 'tail_levels': tail_levels, 'tail_origin': tail_origin, 'tail_spans': tail_spans, 'tail_map': tail_map, 'large_map': large_map, 'selected': selected, 'tail_used': tail_used, 'allocation_end': allocation_end}\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\ncases = {1: [({'sizes': [121, 61, 17, 5, 1], 'threshold': 32, 'page': 64, 'level': 0, 'base': 7, 'tail_capacity': 128}, {'tail_first': 2, 'large_pages': [2, 1], 'tail_levels': [4, 3, 2], 'tail_origin': 199, 'tail_spans': [3, 7, 19], 'tail_map': {4: 201, 3: 204, 2: 211}, 'large_map': {0: 7, 1: 135}, 'selected': 7, 'tail_used': 29, 'allocation_end': 327}), ({'sizes': [122, 62, 18, 6, 1], 'threshold': 32, 'page': 64, 'level': 1, 'base': 7, 'tail_capacity': 128}, {'tail_first': 2, 'large_pages': [2, 1], 'tail_levels': [4, 3, 2], 'tail_origin': 199, 'tail_spans': [3, 8, 20], 'tail_map': {4: 201, 3: 204, 2: 212}, 'large_map': {0: 7, 1: 135}, 'selected': 135, 'tail_used': 31, 'allocation_end': 327}), ({'sizes': [123, 63, 19, 7, 1], 'threshold': 32, 'page': 64, 'level': 2, 'base': 7, 'tail_capacity': 128}, {'tail_first': 2, 'large_pages': [2, 1], 'tail_levels': [4, 3, 2], 'tail_origin': 199, 'tail_spans': [3, 9, 21], 'tail_map': {4: 201, 3: 204, 2: 213}, 'large_map': {0: 7, 1: 135}, 'selected': 213, 'tail_used': 33, 'allocation_end': 327}), ({'sizes': [124, 64, 20, 8, 1], 'threshold': 32, 'page': 64, 'level': 3, 'base': 7, 'tail_capacity': 128}, {'tail_first': 2, 'large_pages': [2, 1], 'tail_levels': [4, 3, 2], 'tail_origin': 199, 'tail_spans': [3, 10, 22], 'tail_map': {4: 201, 3: 204, 2: 214}, 'large_map': {0: 7, 1: 135}, 'selected': 204, 'tail_used': 35, 'allocation_end': 327}), ({'sizes': [125, 65, 21, 9, 1], 'threshold': 32, 'page': 64, 'level': 4, 'base': 7, 'tail_capacity': 128}, {'tail_first': 2, 'large_pages': [2, 2], 'tail_levels': [4, 3, 2], 'tail_origin': 263, 'tail_spans': [3, 11, 23], 'tail_map': {4: 265, 3: 268, 2: 279}, 'large_map': {0: 7, 1: 135}, 'selected': 265, 'tail_used': 37, 'allocation_end': 391}), ({'sizes': [126, 66, 22, 10, 1], 'threshold': 32, 'page': 64, 'level': 0, 'base': 7, 'tail_capacity': 128}, {'tail_first': 2, 'large_pages': [2, 2], 'tail_levels': [4, 3, 2], 'tail_origin': 263, 'tail_spans': [3, 12, 24], 'tail_map': {4: 265, 3: 268, 2: 280}, 'large_map': {0: 7, 1: 135}, 'selected': 7, 'tail_used': 39, 'allocation_end': 391})], 2: [({'sizes': [122, 61, 17, 5, 1], 'threshold': 32, 'page': 64, 'level': 0, 'base': 14, 'tail_capacity': 128}, {'tail_first': 2, 'large_pages': [2, 1], 'tail_levels': [4, 3, 2], 'tail_origin': 206, 'tail_spans': [3, 7, 19], 'tail_map': {4: 208, 3: 211, 2: 218}, 'large_map': {0: 14, 1: 142}, 'selected': 14, 'tail_used': 29, 'allocation_end': 334}), ({'sizes': [123, 62, 18, 6, 1], 'threshold': 32, 'page': 64, 'level': 1, 'base': 14, 'tail_capacity': 128}, {'tail_first': 2, 'large_pages': [2, 1], 'tail_levels': [4, 3, 2], 'tail_origin': 206, 'tail_spans': [3, 8, 20], 'tail_map': {4: 208, 3: 211, 2: 219}, 'large_map': {0: 14, 1: 142}, 'selected': 142, 'tail_used': 31, 'allocation_end': 334}), ({'sizes': [124, 63, 19, 7, 1], 'threshold': 32, 'page': 64, 'level': 2, 'base': 14, 'tail_capacity': 128}, {'tail_first': 2, 'large_pages': [2, 1], 'tail_levels': [4, 3, 2], 'tail_origin': 206, 'tail_spans': [3, 9, 21], 'tail_map': {4: 208, 3: 211, 2: 220}, 'large_map': {0: 14, 1: 142}, 'selected': 220, 'tail_used': 33, 'allocation_end': 334}), ({'sizes': [125, 64, 20, 8, 1], 'threshold': 32, 'page': 64, 'level': 3, 'base': 14, 'tail_capacity': 128}, {'tail_first': 2, 'large_pages': [2, 1], 'tail_levels': [4, 3, 2], 'tail_origin': 206, 'tail_spans': [3, 10, 22], 'tail_map': {4: 208, 3: 211, 2: 221}, 'large_map': {0: 14, 1: 142}, 'selected': 211, 'tail_used': 35, 'allocation_end': 334}), ({'sizes': [126, 65, 21, 9, 1], 'threshold': 32, 'page': 64, 'level': 4, 'base': 14, 'tail_capacity': 128}, {'tail_first': 2, 'large_pages': [2, 2], 'tail_levels': [4, 3, 2], 'tail_origin': 270, 'tail_spans': [3, 11, 23], 'tail_map': {4: 272, 3: 275, 2: 286}, 'large_map': {0: 14, 1: 142}, 'selected': 272, 'tail_used': 37, 'allocation_end': 398}), ({'sizes': [127, 66, 22, 10, 1], 'threshold': 32, 'page': 64, 'level': 0, 'base': 14, 'tail_capacity': 128}, {'tail_first': 2, 'large_pages': [2, 2], 'tail_levels': [4, 3, 2], 'tail_origin': 270, 'tail_spans': [3, 12, 24], 'tail_map': {4: 272, 3: 275, 2: 287}, 'large_map': {0: 14, 1: 142}, 'selected': 14, 'tail_used': 39, 'allocation_end': 398})], 3: [({'sizes': [123, 61, 17, 5, 1], 'threshold': 32, 'page': 64, 'level': 0, 'base': 21, 'tail_capacity': 128}, {'tail_first': 2, 'large_pages': [2, 1], 'tail_levels': [4, 3, 2], 'tail_origin': 213, 'tail_spans': [3, 7, 19], 'tail_map': {4: 215, 3: 218, 2: 225}, 'large_map': {0: 21, 1: 149}, 'selected': 21, 'tail_used': 29, 'allocation_end': 341}), ({'sizes': [124, 62, 18, 6, 1], 'threshold': 32, 'page': 64, 'level': 1, 'base': 21, 'tail_capacity': 128}, {'tail_first': 2, 'large_pages': [2, 1], 'tail_levels': [4, 3, 2], 'tail_origin': 213, 'tail_spans': [3, 8, 20], 'tail_map': {4: 215, 3: 218, 2: 226}, 'large_map': {0: 21, 1: 149}, 'selected': 149, 'tail_used': 31, 'allocation_end': 341}), ({'sizes': [125, 63, 19, 7, 1], 'threshold': 32, 'page': 64, 'level': 2, 'base': 21, 'tail_capacity': 128}, {'tail_first': 2, 'large_pages': [2, 1], 'tail_levels': [4, 3, 2], 'tail_origin': 213, 'tail_spans': [3, 9, 21], 'tail_map': {4: 215, 3: 218, 2: 227}, 'large_map': {0: 21, 1: 149}, 'selected': 227, 'tail_used': 33, 'allocation_end': 341}), ({'sizes': [126, 64, 20, 8, 1], 'threshold': 32, 'page': 64, 'level': 3, 'base': 21, 'tail_capacity': 128}, {'tail_first': 2, 'large_pages': [2, 1], 'tail_levels': [4, 3, 2], 'tail_origin': 213, 'tail_spans': [3, 10, 22], 'tail_map': {4: 215, 3: 218, 2: 228}, 'large_map': {0: 21, 1: 149}, 'selected': 218, 'tail_used': 35, 'allocation_end': 341}), ({'sizes': [127, 65, 21, 9, 1], 'threshold': 32, 'page': 64, 'level': 4, 'base': 21, 'tail_capacity': 128}, {'tail_first': 2, 'large_pages': [2, 2], 'tail_levels': [4, 3, 2], 'tail_origin': 277, 'tail_spans': [3, 11, 23], 'tail_map': {4: 279, 3: 282, 2: 293}, 'large_map': {0: 21, 1: 149}, 'selected': 279, 'tail_used': 37, 'allocation_end': 405}), ({'sizes': [128, 66, 22, 10, 1], 'threshold': 32, 'page': 64, 'level': 0, 'base': 21, 'tail_capacity': 128}, {'tail_first': 2, 'large_pages': [2, 2], 'tail_levels': [4, 3, 2], 'tail_origin': 277, 'tail_spans': [3, 12, 24], 'tail_map': {4: 279, 3: 282, 2: 294}, 'large_map': {0: 21, 1: 149}, 'selected': 21, 'tail_used': 39, 'allocation_end': 405})], 4: [({'sizes': [124, 61, 17, 5, 1], 'threshold': 32, 'page': 64, 'level': 0, 'base': 28, 'tail_capacity': 128}, {'tail_first': 2, 'large_pages': [2, 1], 'tail_levels': [4, 3, 2], 'tail_origin': 220, 'tail_spans': [3, 7, 19], 'tail_map': {4: 222, 3: 225, 2: 232}, 'large_map': {0: 28, 1: 156}, 'selected': 28, 'tail_used': 29, 'allocation_end': 348}), ({'sizes': [125, 62, 18, 6, 1], 'threshold': 32, 'page': 64, 'level': 1, 'base': 28, 'tail_capacity': 128}, {'tail_first': 2, 'large_pages': [2, 1], 'tail_levels': [4, 3, 2], 'tail_origin': 220, 'tail_spans': [3, 8, 20], 'tail_map': {4: 222, 3: 225, 2: 233}, 'large_map': {0: 28, 1: 156}, 'selected': 156, 'tail_used': 31, 'allocation_end': 348}), ({'sizes': [126, 63, 19, 7, 1], 'threshold': 32, 'page': 64, 'level': 2, 'base': 28, 'tail_capacity': 128}, {'tail_first': 2, 'large_pages': [2, 1], 'tail_levels': [4, 3, 2], 'tail_origin': 220, 'tail_spans': [3, 9, 21], 'tail_map': {4: 222, 3: 225, 2: 234}, 'large_map': {0: 28, 1: 156}, 'selected': 234, 'tail_used': 33, 'allocation_end': 348}), ({'sizes': [127, 64, 20, 8, 1], 'threshold': 32, 'page': 64, 'level': 3, 'base': 28, 'tail_capacity': 128}, {'tail_first': 2, 'large_pages': [2, 1], 'tail_levels': [4, 3, 2], 'tail_origin': 220, 'tail_spans': [3, 10, 22], 'tail_map': {4: 222, 3: 225, 2: 235}, 'large_map': {0: 28, 1: 156}, 'selected': 225, 'tail_used': 35, 'allocation_end': 348}), ({'sizes': [128, 65, 21, 9, 1], 'threshold': 32, 'page': 64, 'level': 4, 'base': 28, 'tail_capacity': 128}, {'tail_first': 2, 'large_pages': [2, 2], 'tail_levels': [4, 3, 2], 'tail_origin': 284, 'tail_spans': [3, 11, 23], 'tail_map': {4: 286, 3: 289, 2: 300}, 'large_map': {0: 28, 1: 156}, 'selected': 286, 'tail_used': 37, 'allocation_end': 412}), ({'sizes': [129, 66, 22, 10, 1], 'threshold': 32, 'page': 64, 'level': 0, 'base': 28, 'tail_capacity': 128}, {'tail_first': 2, 'large_pages': [3, 2], 'tail_levels': [4, 3, 2], 'tail_origin': 348, 'tail_spans': [3, 12, 24], 'tail_map': {4: 350, 3: 353, 2: 365}, 'large_map': {0: 28, 1: 220}, 'selected': 28, 'tail_used': 39, 'allocation_end': 476})], 5: [({'sizes': [125, 61, 17, 5, 1], 'threshold': 32, 'page': 64, 'level': 0, 'base': 35, 'tail_capacity': 128}, {'tail_first': 2, 'large_pages': [2, 1], 'tail_levels': [4, 3, 2], 'tail_origin': 227, 'tail_spans': [3, 7, 19], 'tail_map': {4: 229, 3: 232, 2: 239}, 'large_map': {0: 35, 1: 163}, 'selected': 35, 'tail_used': 29, 'allocation_end': 355}), ({'sizes': [126, 62, 18, 6, 1], 'threshold': 32, 'page': 64, 'level': 1, 'base': 35, 'tail_capacity': 128}, {'tail_first': 2, 'large_pages': [2, 1], 'tail_levels': [4, 3, 2], 'tail_origin': 227, 'tail_spans': [3, 8, 20], 'tail_map': {4: 229, 3: 232, 2: 240}, 'large_map': {0: 35, 1: 163}, 'selected': 163, 'tail_used': 31, 'allocation_end': 355}), ({'sizes': [127, 63, 19, 7, 1], 'threshold': 32, 'page': 64, 'level': 2, 'base': 35, 'tail_capacity': 128}, {'tail_first': 2, 'large_pages': [2, 1], 'tail_levels': [4, 3, 2], 'tail_origin': 227, 'tail_spans': [3, 9, 21], 'tail_map': {4: 229, 3: 232, 2: 241}, 'large_map': {0: 35, 1: 163}, 'selected': 241, 'tail_used': 33, 'allocation_end': 355}), ({'sizes': [128, 64, 20, 8, 1], 'threshold': 32, 'page': 64, 'level': 3, 'base': 35, 'tail_capacity': 128}, {'tail_first': 2, 'large_pages': [2, 1], 'tail_levels': [4, 3, 2], 'tail_origin': 227, 'tail_spans': [3, 10, 22], 'tail_map': {4: 229, 3: 232, 2: 242}, 'large_map': {0: 35, 1: 163}, 'selected': 232, 'tail_used': 35, 'allocation_end': 355}), ({'sizes': [129, 65, 21, 9, 1], 'threshold': 32, 'page': 64, 'level': 4, 'base': 35, 'tail_capacity': 128}, {'tail_first': 2, 'large_pages': [3, 2], 'tail_levels': [4, 3, 2], 'tail_origin': 355, 'tail_spans': [3, 11, 23], 'tail_map': {4: 357, 3: 360, 2: 371}, 'large_map': {0: 35, 1: 227}, 'selected': 357, 'tail_used': 37, 'allocation_end': 483}), ({'sizes': [130, 66, 22, 10, 1], 'threshold': 32, 'page': 64, 'level': 0, 'base': 35, 'tail_capacity': 128}, {'tail_first': 2, 'large_pages': [3, 2], 'tail_levels': [4, 3, 2], 'tail_origin': 355, 'tail_spans': [3, 12, 24], 'tail_map': {4: 357, 3: 360, 2: 372}, 'large_map': {0: 35, 1: 227}, 'selected': 35, 'tail_used': 39, 'allocation_end': 483})]}\nfor i, (p, expected) in enumerate(cases[N]):\n    check(\"layout fixture \" + str(i + 1), solve(p), expected)\nprint(json.dumps({\"observations\": observations, \"passed\": all(x[\"passed\"] for x in observations)}, ensure_ascii=False))\nraise SystemExit(0 if all(x[\"passed\"] for x in observations) else 1)\n"}},"limitations":"Stipulated deterministic toy buffer layout; not a graphics API, codec, GPU vendor tiling specification, or hardware-conformance claim. Inputs satisfy the dimensions and bounds stated by the model. This reproducer isolates one failure mechanism. Results cover the supplied fixtures. Variants within a family share a test contract and should remain grouped when constructing evaluation splits. Related mechanisms with a shared evaluation_group must also remain together; these controlled models are not independent production incidents.","method":"Deterministic executable model with adversarial boundary fixtures.","provenance":{"created_by":"Failure Map","dependencies":"Python standard library","family":"s3-raster-memory-layout-small-mip-tail-packing-tail-first","generated_at":"2026-09-29T14:45:31.940423+00:00","license":"CC0-1.0","python":"3.12.14","seed":1,"split":"open-access"},"relevance":"Offline raster resource, upload, readback, and storage-layout regression model.","root_cause":"Mip-tail start uses page capacity instead of configured threshold The faulty expression is next(i for i,s in enumerate(p[\"sizes\"]) if s<=64).","sha256":"2f165730c691e1ab7f4882f19fc3631a011b1b9bc6d0b80092312c74ef605575","title":"Small Mip Tail Packing: Mip-tail start uses page capacity instead of configured threshold · case 01","variant":1,"variant_policy":"Five numbered records share a model and may reuse boundary fixtures.","verified":true,"visibility":"public","verification":{"attempt":{"elapsed_ms":45.298,"exit_code":1,"observations":[{"actual":{"allocation_end":135,"large_map":{},"large_pages":[],"selected":101,"tail_first":0,"tail_levels":[4,3,2,1,0],"tail_map":{"0":101,"1":38,"2":19,"3":12,"4":9},"tail_origin":7,"tail_spans":[3,7,19,63,123],"tail_used":215},"check":"layout fixture 1","expected":{"allocation_end":327,"large_map":{"0":7,"1":135},"large_pages":[2,1],"selected":7,"tail_first":2,"tail_levels":[4,3,2],"tail_map":{"2":211,"3":204,"4":201},"tail_origin":199,"tail_spans":[3,7,19],"tail_used":29},"passed":false},{"actual":{"allocation_end":135,"large_map":{},"large_pages":[],"selected":40,"tail_first":0,"tail_levels":[4,3,2,1,0],"tail_map":{"0":104,"1":40,"2":20,"3":12,"4":9},"tail_origin":7,"tail_spans":[3,8,20,64,124],"tail_used":219},"check":"layout fixture 2","expected":{"allocation_end":327,"large_map":{"0":7,"1":135},"large_pages":[2,1],"selected":135,"tail_first":2,"tail_levels":[4,3,2],"tail_map":{"2":212,"3":204,"4":201},"tail_origin":199,"tail_spans":[3,8,20],"tail_used":31},"passed":false},{"actual":{"allocation_end":135,"large_map":{},"large_pages":[],"selected":21,"tail_first":0,"tail_levels":[4,3,2,1,0],"tail_map":{"0":107,"1":42,"2":21,"3":12,"4":9},"tail_origin":7,"tail_spans":[3,9,21,65,125],"tail_used":223},"check":"layout fixture 3","expected":{"allocation_end":327,"large_map":{"0":7,"1":135},"large_pages":[2,1],"selected":213,"tail_first":2,"tail_levels":[4,3,2],"tail_map":{"2":213,"3":204,"4":201},"tail_origin":199,"tail_spans":[3,9,21],"tail_used":33},"passed":false},{"actual":{"allocation_end":135,"large_map":{},"large_pages":[],"selected":12,"tail_first":0,"tail_levels":[4,3,2,1,0],"tail_map":{"0":110,"1":44,"2":22,"3":12,"4":9},"tail_origin":7,"tail_spans":[3,10,22,66,126],"tail_used":227},"check":"layout fixture 4","expected":{"allocation_end":327,"large_map":{"0":7,"1":135},"large_pages":[2,1],"selected":204,"tail_first":2,"tail_levels":[4,3,2],"tail_map":{"2":214,"3":204,"4":201},"tail_origin":199,"tail_spans":[3,10,22],"tail_used":35},"passed":false},{"actual":{"allocation_end":135,"large_map":{},"large_pages":[],"selected":9,"tail_first":0,"tail_levels":[4,3,2,1,0],"tail_map":{"0":113,"1":46,"2":23,"3":12,"4":9},"tail_origin":7,"tail_spans":[3,11,23,67,127],"tail_used":231},"check":"layout fixture 5","expected":{"allocation_end":391,"large_map":{"0":7,"1":135},"large_pages":[2,2],"selected":265,"tail_first":2,"tail_levels":[4,3,2],"tail_map":{"2":279,"3":268,"4":265},"tail_origin":263,"tail_spans":[3,11,23],"tail_used":37},"passed":false},{"actual":{"allocation_end":135,"large_map":{},"large_pages":[],"selected":116,"tail_first":0,"tail_levels":[4,3,2,1,0],"tail_map":{"0":116,"1":48,"2":24,"3":12,"4":9},"tail_origin":7,"tail_spans":[3,12,24,68,128],"tail_used":235},"check":"layout fixture 6","expected":{"allocation_end":391,"large_map":{"0":7,"1":135},"large_pages":[2,2],"selected":7,"tail_first":2,"tail_levels":[4,3,2],"tail_map":{"2":280,"3":268,"4":265},"tail_origin":263,"tail_spans":[3,12,24],"tail_used":39},"passed":false}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"layout fixture 1\", \"actual\": {\"tail_first\": 0, \"large_pages\": [], \"tail_levels\": [4, 3, 2, 1, 0], \"tail_origin\": 7, \"tail_spans\": [3, 7, 19, 63, 123], \"tail_map\": {\"4\": 9, \"3\": 12, \"2\": 19, \"1\": 38, \"0\": 101}, \"large_map\": {}, \"selected\": 101, \"tail_used\": 215, \"allocation_end\": 135}, \"expected\": {\"tail_first\": 2, \"large_pages\": [2, 1], \"tail_levels\": [4, 3, 2], \"tail_origin\": 199, \"tail_spans\": [3, 7, 19], \"tail_map\": {\"4\": 201, \"3\": 204, \"2\": 211}, \"large_map\": {\"0\": 7, \"1\": 135}, \"selected\": 7, \"tail_used\": 29, \"allocation_end\": 327}, \"passed\": false}, {\"check\": \"layout fixture 2\", \"actual\": {\"tail_first\": 0, \"large_pages\": [], \"tail_levels\": [4, 3, 2, 1, 0], \"tail_origin\": 7, \"tail_spans\": [3, 8, 20, 64, 124], \"tail_map\": {\"4\": 9, \"3\": 12, \"2\": 20, \"1\": 40, \"0\": 104}, \"large_map\": {}, \"selected\": 40, \"tail_used\": 219, \"allocation_end\": 135}, \"expected\": {\"tail_first\": 2, \"large_pages\": [2, 1], \"tail_levels\": [4, 3, 2], \"tail_origin\": 199, \"tail_spans\": [3, 8, 20], \"tail_map\": {\"4\": 201, \"3\": 204, \"2\": 212}, \"large_map\": {\"0\": 7, \"1\": 135}, \"selected\": 135, \"tail_used\": 31, \"allocation_end\": 327}, \"passed\": false}, {\"check\": \"layout fixture 3\", \"actual\": {\"tail_first\": 0, \"large_pages\": [], \"tail_levels\": [4, 3, 2, 1, 0], \"tail_origin\": 7, \"tail_spans\": [3, 9, 21, 65, 125], \"tail_map\": {\"4\": 9, \"3\": 12, \"2\": 21, \"1\": 42, \"0\": 107}, \"large_map\": {}, \"selected\": 21, \"tail_used\": 223, \"allocation_end\": 135}, \"expected\": {\"tail_first\": 2, \"large_pages\": [2, 1], \"tail_levels\": [4, 3, 2], \"tail_origin\": 199, \"tail_spans\": [3, 9, 21], \"tail_map\": {\"4\": 201, \"3\": 204, \"2\": 213}, \"large_map\": {\"0\": 7, \"1\": 135}, \"selected\": 213, \"tail_used\": 33, \"allocation_end\": 327}, \"passed\": false}, {\"check\": \"layout fixture 4\", \"actual\": {\"tail_first\": 0, \"large_pages\": [], \"tail_levels\": [4, 3, 2, 1, 0], \"tail_origin\": 7, \"tail_spans\": [3, 10, 22, 66, 126], \"tail_map\": {\"4\": 9, \"3\": 12, \"2\": 22, \"1\": 44, \"0\": 110}, \"large_map\": {}, \"selected\": 12, \"tail_used\": 227, \"allocation_end\": 135}, \"expected\": {\"tail_first\": 2, \"large_pages\": [2, 1], \"tail_levels\": [4, 3, 2], \"tail_origin\": 199, \"tail_spans\": [3, 10, 22], \"tail_map\": {\"4\": 201, \"3\": 204, \"2\": 214}, \"large_map\": {\"0\": 7, \"1\": 135}, \"selected\": 204, \"tail_used\": 35, \"allocation_end\": 327}, \"passed\": false}, {\"check\": \"layout fixture 5\", \"actual\": {\"tail_first\": 0, \"large_pages\": [], \"tail_levels\": [4, 3, 2, 1, 0], \"tail_origin\": 7, \"tail_spans\": [3, 11, 23, 67, 127], \"tail_map\": {\"4\": 9, \"3\": 12, \"2\": 23, \"1\": 46, \"0\": 113}, \"large_map\": {}, \"selected\": 9, \"tail_used\": 231, \"allocation_end\": 135}, \"expected\": {\"tail_first\": 2, \"large_pages\": [2, 2], \"tail_levels\": [4, 3, 2], \"tail_origin\": 263, \"tail_spans\": [3, 11, 23], \"tail_map\": {\"4\": 265, \"3\": 268, \"2\": 279}, \"large_map\": {\"0\": 7, \"1\": 135}, \"selected\": 265, \"tail_used\": 37, \"allocation_end\": 391}, \"passed\": false}, {\"check\": \"layout fixture 6\", \"actual\": {\"tail_first\": 0, \"large_pages\": [], \"tail_levels\": [4, 3, 2, 1, 0], \"tail_origin\": 7, \"tail_spans\": [3, 12, 24, 68, 128], \"tail_map\": {\"4\": 9, \"3\": 12, \"2\": 24, \"1\": 48, \"0\": 116}, \"large_map\": {}, \"selected\": 116, \"tail_used\": 235, \"allocation_end\": 135}, \"expected\": {\"tail_first\": 2, \"large_pages\": [2, 2], \"tail_levels\": [4, 3, 2], \"tail_origin\": 263, \"tail_spans\": [3, 12, 24], \"tail_map\": {\"4\": 265, \"3\": 268, \"2\": 280}, \"large_map\": {\"0\": 7, \"1\": 135}, \"selected\": 7, \"tail_used\": 39, \"allocation_end\": 391}, \"passed\": false}], \"passed\": false}\n"},"broken":{"elapsed_ms":44.97,"exit_code":1,"observations":[{"actual":{"allocation_end":263,"large_map":{"0":7},"large_pages":[2],"selected":7,"tail_first":1,"tail_levels":[4,3,2,1],"tail_map":{"1":166,"2":147,"3":140,"4":137},"tail_origin":135,"tail_spans":[3,7,19,63],"tail_used":92},"check":"layout fixture 1","expected":{"allocation_end":327,"large_map":{"0":7,"1":135},"large_pages":[2,1],"selected":7,"tail_first":2,"tail_levels":[4,3,2],"tail_map":{"2":211,"3":204,"4":201},"tail_origin":199,"tail_spans":[3,7,19],"tail_used":29},"passed":false},{"actual":{"allocation_end":263,"large_map":{"0":7},"large_pages":[2],"selected":168,"tail_first":1,"tail_levels":[4,3,2,1],"tail_map":{"1":168,"2":148,"3":140,"4":137},"tail_origin":135,"tail_spans":[3,8,20,64],"tail_used":95},"check":"layout fixture 2","expected":{"allocation_end":327,"large_map":{"0":7,"1":135},"large_pages":[2,1],"selected":135,"tail_first":2,"tail_levels":[4,3,2],"tail_map":{"2":212,"3":204,"4":201},"tail_origin":199,"tail_spans":[3,8,20],"tail_used":31},"passed":false},{"actual":{"allocation_end":263,"large_map":{"0":7},"large_pages":[2],"selected":149,"tail_first":1,"tail_levels":[4,3,2,1],"tail_map":{"1":170,"2":149,"3":140,"4":137},"tail_origin":135,"tail_spans":[3,9,21,65],"tail_used":98},"check":"layout fixture 3","expected":{"allocation_end":327,"large_map":{"0":7,"1":135},"large_pages":[2,1],"selected":213,"tail_first":2,"tail_levels":[4,3,2],"tail_map":{"2":213,"3":204,"4":201},"tail_origin":199,"tail_spans":[3,9,21],"tail_used":33},"passed":false},{"actual":{"allocation_end":263,"large_map":{"0":7},"large_pages":[2],"selected":140,"tail_first":1,"tail_levels":[4,3,2,1],"tail_map":{"1":172,"2":150,"3":140,"4":137},"tail_origin":135,"tail_spans":[3,10,22,66],"tail_used":101},"check":"layout fixture 4","expected":{"allocation_end":327,"large_map":{"0":7,"1":135},"large_pages":[2,1],"selected":204,"tail_first":2,"tail_levels":[4,3,2],"tail_map":{"2":214,"3":204,"4":201},"tail_origin":199,"tail_spans":[3,10,22],"tail_used":35},"passed":false},{"actual":{"allocation_end":391,"large_map":{"0":7,"1":135},"large_pages":[2,2],"selected":265,"tail_first":2,"tail_levels":[4,3,2],"tail_map":{"2":279,"3":268,"4":265},"tail_origin":263,"tail_spans":[3,11,23],"tail_used":37},"check":"layout fixture 5","expected":{"allocation_end":391,"large_map":{"0":7,"1":135},"large_pages":[2,2],"selected":265,"tail_first":2,"tail_levels":[4,3,2],"tail_map":{"2":279,"3":268,"4":265},"tail_origin":263,"tail_spans":[3,11,23],"tail_used":37},"passed":true},{"actual":{"allocation_end":391,"large_map":{"0":7,"1":135},"large_pages":[2,2],"selected":7,"tail_first":2,"tail_levels":[4,3,2],"tail_map":{"2":280,"3":268,"4":265},"tail_origin":263,"tail_spans":[3,12,24],"tail_used":39},"check":"layout fixture 6","expected":{"allocation_end":391,"large_map":{"0":7,"1":135},"large_pages":[2,2],"selected":7,"tail_first":2,"tail_levels":[4,3,2],"tail_map":{"2":280,"3":268,"4":265},"tail_origin":263,"tail_spans":[3,12,24],"tail_used":39},"passed":true}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"layout fixture 1\", \"actual\": {\"tail_first\": 1, \"large_pages\": [2], \"tail_levels\": [4, 3, 2, 1], \"tail_origin\": 135, \"tail_spans\": [3, 7, 19, 63], \"tail_map\": {\"4\": 137, \"3\": 140, \"2\": 147, \"1\": 166}, \"large_map\": {\"0\": 7}, \"selected\": 7, \"tail_used\": 92, \"allocation_end\": 263}, \"expected\": {\"tail_first\": 2, \"large_pages\": [2, 1], \"tail_levels\": [4, 3, 2], \"tail_origin\": 199, \"tail_spans\": [3, 7, 19], \"tail_map\": {\"4\": 201, \"3\": 204, \"2\": 211}, \"large_map\": {\"0\": 7, \"1\": 135}, \"selected\": 7, \"tail_used\": 29, \"allocation_end\": 327}, \"passed\": false}, {\"check\": \"layout fixture 2\", \"actual\": {\"tail_first\": 1, \"large_pages\": [2], \"tail_levels\": [4, 3, 2, 1], \"tail_origin\": 135, \"tail_spans\": [3, 8, 20, 64], \"tail_map\": {\"4\": 137, \"3\": 140, \"2\": 148, \"1\": 168}, \"large_map\": {\"0\": 7}, \"selected\": 168, \"tail_used\": 95, \"allocation_end\": 263}, \"expected\": {\"tail_first\": 2, \"large_pages\": [2, 1], \"tail_levels\": [4, 3, 2], \"tail_origin\": 199, \"tail_spans\": [3, 8, 20], \"tail_map\": {\"4\": 201, \"3\": 204, \"2\": 212}, \"large_map\": {\"0\": 7, \"1\": 135}, \"selected\": 135, \"tail_used\": 31, \"allocation_end\": 327}, \"passed\": false}, {\"check\": \"layout fixture 3\", \"actual\": {\"tail_first\": 1, \"large_pages\": [2], \"tail_levels\": [4, 3, 2, 1], \"tail_origin\": 135, \"tail_spans\": [3, 9, 21, 65], \"tail_map\": {\"4\": 137, \"3\": 140, \"2\": 149, \"1\": 170}, \"large_map\": {\"0\": 7}, \"selected\": 149, \"tail_used\": 98, \"allocation_end\": 263}, \"expected\": {\"tail_first\": 2, \"large_pages\": [2, 1], \"tail_levels\": [4, 3, 2], \"tail_origin\": 199, \"tail_spans\": [3, 9, 21], \"tail_map\": {\"4\": 201, \"3\": 204, \"2\": 213}, \"large_map\": {\"0\": 7, \"1\": 135}, \"selected\": 213, \"tail_used\": 33, \"allocation_end\": 327}, \"passed\": false}, {\"check\": \"layout fixture 4\", \"actual\": {\"tail_first\": 1, \"large_pages\": [2], \"tail_levels\": [4, 3, 2, 1], \"tail_origin\": 135, \"tail_spans\": [3, 10, 22, 66], \"tail_map\": {\"4\": 137, \"3\": 140, \"2\": 150, \"1\": 172}, \"large_map\": {\"0\": 7}, \"selected\": 140, \"tail_used\": 101, \"allocation_end\": 263}, \"expected\": {\"tail_first\": 2, \"large_pages\": [2, 1], \"tail_levels\": [4, 3, 2], \"tail_origin\": 199, \"tail_spans\": [3, 10, 22], \"tail_map\": {\"4\": 201, \"3\": 204, \"2\": 214}, \"large_map\": {\"0\": 7, \"1\": 135}, \"selected\": 204, \"tail_used\": 35, \"allocation_end\": 327}, \"passed\": false}, {\"check\": \"layout fixture 5\", \"actual\": {\"tail_first\": 2, \"large_pages\": [2, 2], \"tail_levels\": [4, 3, 2], \"tail_origin\": 263, \"tail_spans\": [3, 11, 23], \"tail_map\": {\"4\": 265, \"3\": 268, \"2\": 279}, \"large_map\": {\"0\": 7, \"1\": 135}, \"selected\": 265, \"tail_used\": 37, \"allocation_end\": 391}, \"expected\": {\"tail_first\": 2, \"large_pages\": [2, 2], \"tail_levels\": [4, 3, 2], \"tail_origin\": 263, \"tail_spans\": [3, 11, 23], \"tail_map\": {\"4\": 265, \"3\": 268, \"2\": 279}, \"large_map\": {\"0\": 7, \"1\": 135}, \"selected\": 265, \"tail_used\": 37, \"allocation_end\": 391}, \"passed\": true}, {\"check\": \"layout fixture 6\", \"actual\": {\"tail_first\": 2, \"large_pages\": [2, 2], \"tail_levels\": [4, 3, 2], \"tail_origin\": 263, \"tail_spans\": [3, 12, 24], \"tail_map\": {\"4\": 265, \"3\": 268, \"2\": 280}, \"large_map\": {\"0\": 7, \"1\": 135}, \"selected\": 7, \"tail_used\": 39, \"allocation_end\": 391}, \"expected\": {\"tail_first\": 2, \"large_pages\": [2, 2], \"tail_levels\": [4, 3, 2], \"tail_origin\": 263, \"tail_spans\": [3, 12, 24], \"tail_map\": {\"4\": 265, \"3\": 268, \"2\": 280}, \"large_map\": {\"0\": 7, \"1\": 135}, \"selected\": 7, \"tail_used\": 39, \"allocation_end\": 391}, \"passed\": true}], \"passed\": false}\n"}},"member_only":{"stages":["fixed"],"fields":["implementations.fixed","verification.fixed","harness","repair"],"note":"The verified repair, its recorded checks, the repair description, and the scoring harness are available to members."}}