{"abstract":"Windows open late by up to one sample interval.","category":"Tide and marine navigation tables","checks":7,"contract":"Input [ts, hs, req]: sample times (minutes) and heights. Return the list of [start, end] intervals where height>=req, with crossing times linearly interpolated and rounded conservatively inward (start up, end down, 1e-9 tolerance); windows that vanish after rounding are dropped. A window open at the first sample starts at ts[0]; one still open at the end closes at ts[-1].","evaluation_group":"w2-tide_and_marine_navigation_tables-tidal_window","failed_approach":"Opening at the previous sample is unsafe: the water is still below the required height.","family":"w2-tide_and_marine_navigation_tables-tidal_window-opening-crossing","id":"FA-69071","implementations":{"attempt":{"sha256":"c4f1c0147ebaaaeb630838ce04dd196891c91892a460d4b45f5c59c9d5966ca3","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\nimport math\nN = 1\nobservations = []\ndef solve(x):\n    ts,hs,req=x\n    wins=[]\n    def close(a,b):\n        s0,e0=math.ceil(a-1e-9),math.floor(b+1e-9)\n        if s0<=e0: wins.append([s0,e0])\n    start=ts[0] if hs[0]>=req else None\n    for k in range(1,len(ts)):\n        a,b=hs[k-1],hs[k]\n        if (a>=req)!=(b>=req):\n            tc=ts[k-1]+(ts[k]-ts[k-1])*(req-a)/(b-a)\n            if b>=req: start=ts[k-1]\n            else:\n                if start is not None: close(start,tc)\n                start=None\n    if start is not None: close(start,ts[-1])\n    return wins\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\nfixtures = [[('tidal height window [[0, 60, 120, 180, 240, 300, 360], [1.0, 1.8, 2.9, 3.6, 3.1, 2.2, 1.4], 2.5]', [[0, 60, 120, 180, 240, 300, 360], [1.0, 1.8, 2.9, 3.6, 3.1, 2.2, 1.4], 2.5], [[99, 280]]), ('tidal height window [[0, 60, 120, 180, 240, 300, 360], [1.0, 1.8, 2.9, 3.6, 3.1, 2.2, 1.4], 3.3]', [[0, 60, 120, 180, 240, 300, 360], [1.0, 1.8, 2.9, 3.6, 3.1, 2.2, 1.4], 3.3], [[155, 216]]), ('tidal height window [[0, 60, 120, 180, 240], [3.0, 2.6, 2.0, 2.4, 2.8], 2.5]', [[0, 60, 120, 180, 240], [3.0, 2.6, 2.0, 2.4, 2.8], 2.5], [[0, 70], [195, 240]]), ('tidal height window [[0, 60, 120, 180, 240], [2.5, 2.6, 2.0, 2.4, 2.8], 2.5]', [[0, 60, 120, 180, 240], [2.5, 2.6, 2.0, 2.4, 2.8], 2.5], [[0, 70], [195, 240]]), ('tidal height window [[0, 30, 60, 90, 120], [1.0, 2.0, 3.0, 2.0, 1.0], 2.0]', [[0, 30, 60, 90, 120], [1.0, 2.0, 3.0, 2.0, 1.0], 2.0], [[30, 90]]), ('tidal height window [[0, 45, 90, 135], [0.5, 0.7, 0.9, 0.6], 2.0]', [[0, 45, 90, 135], [0.5, 0.7, 0.9, 0.6], 2.0], []), ('tidal height window [[0, 60, 120], [2.1, 2.2, 2.3], 2.0]', [[0, 60, 120], [2.1, 2.2, 2.3], 2.0], [[0, 120]])], [('tidal height window [[0, 60, 120, 180, 240, 300, 360], [1.0, 1.8, 2.9, 3.6, 3.1, 2.2, 1.4], 3.3]', [[0, 60, 120, 180, 240, 300, 360], [1.0, 1.8, 2.9, 3.6, 3.1, 2.2, 1.4], 3.3], [[155, 216]]), ('tidal height window [[0, 60, 120, 180, 240], [2.5, 2.6, 2.0, 2.4, 2.8], 2.5]', [[0, 60, 120, 180, 240], [2.5, 2.6, 2.0, 2.4, 2.8], 2.5], [[0, 70], [195, 240]]), ('tidal height window [[0, 30, 60, 90, 120], [1.0, 2.0, 3.0, 2.0, 1.0], 2.0]', [[0, 30, 60, 90, 120], [1.0, 2.0, 3.0, 2.0, 1.0], 2.0], [[30, 90]]), ('tidal height window [[0, 45, 90, 135], [0.5, 0.7, 0.9, 0.6], 2.0]', [[0, 45, 90, 135], [0.5, 0.7, 0.9, 0.6], 2.0], []), ('tidal height window [[0, 60, 120], [2.1, 2.2, 2.3], 2.0]', [[0, 60, 120], [2.1, 2.2, 2.3], 2.0], [[0, 120]]), ('tidal height window [[0, 60, 120, 180, 240, 300], [0.8, 1.9, 2.6, 1.7, 2.4, 3.0], 2.2]', [[0, 60, 120, 180, 240, 300], [0.8, 1.9, 2.6, 1.7, 2.4, 3.0], 2.2], [[86, 146], [223, 300]]), ('tidal height window [[0, 50, 100, 150], [1.0, 2.0, 3.0, 1.0], 1.5]', [[0, 50, 100, 150], [1.0, 2.0, 3.0, 1.0], 1.5], [[25, 137]])], [('tidal height window [[0, 60, 120, 180, 240], [3.0, 2.6, 2.0, 2.4, 2.8], 2.5]', [[0, 60, 120, 180, 240], [3.0, 2.6, 2.0, 2.4, 2.8], 2.5], [[0, 70], [195, 240]]), ('tidal height window [[0, 60, 120], [2.1, 2.2, 2.3], 2.0]', [[0, 60, 120], [2.1, 2.2, 2.3], 2.0], [[0, 120]]), ('tidal height window [[0, 60, 120, 180, 240, 300], [0.8, 1.9, 2.6, 1.7, 2.4, 3.0], 2.2]', [[0, 60, 120, 180, 240, 300], [0.8, 1.9, 2.6, 1.7, 2.4, 3.0], 2.2], [[86, 146], [223, 300]]), ('tidal height window [[0, 50, 100, 150], [1.0, 2.0, 3.0, 1.0], 1.5]', [[0, 50, 100, 150], [1.0, 2.0, 3.0, 1.0], 1.5], [[25, 137]]), ('tidal height window [[100, 160, 220, 280], [1.0, 1.3, 1.9, 2.2], 1.45]', [[100, 160, 220, 280], [1.0, 1.3, 1.9, 2.2], 1.45], [[175, 280]]), ('tidal height window [[0, 60, 120, 180], [3.0, 1.0, 1.0, 3.0], 1.5]', [[0, 60, 120, 180], [3.0, 1.0, 1.0, 3.0], 1.5], [[0, 45], [135, 180]]), ('tidal height window [[0, 60, 120, 180, 240], [1.0, 2.5, 1.0, 2.6, 1.0], 2.0]', [[0, 60, 120, 180, 240], [1.0, 2.5, 1.0, 2.6, 1.0], 2.0], [[40, 80], [158, 202]])], [('tidal height window [[0, 60, 120, 180, 240], [2.5, 2.6, 2.0, 2.4, 2.8], 2.5]', [[0, 60, 120, 180, 240], [2.5, 2.6, 2.0, 2.4, 2.8], 2.5], [[0, 70], [195, 240]]), ('tidal height window [[100, 160, 220, 280], [1.0, 1.3, 1.9, 2.2], 1.45]', [[100, 160, 220, 280], [1.0, 1.3, 1.9, 2.2], 1.45], [[175, 280]]), ('tidal height window [[0, 60, 120, 180], [3.0, 1.0, 1.0, 3.0], 1.5]', [[0, 60, 120, 180], [3.0, 1.0, 1.0, 3.0], 1.5], [[0, 45], [135, 180]]), ('tidal height window [[0, 60, 120, 180, 240], [1.0, 2.5, 1.0, 2.6, 1.0], 2.0]', [[0, 60, 120, 180, 240], [1.0, 2.5, 1.0, 2.6, 1.0], 2.0], [[40, 80], [158, 202]]), ('tidal height window [[0, 60, 120, 180, 240, 300, 360], [1.0, 1.8, 2.9, 3.6, 3.1, 2.2, 1.4], 2.5]', [[0, 60, 120, 180, 240, 300, 360], [1.0, 1.8, 2.9, 3.6, 3.1, 2.2, 1.4], 2.5], [[99, 280]]), ('tidal height window [[0, 60, 120, 180, 240, 300, 360], [1.0, 1.8, 2.9, 3.6, 3.1, 2.2, 1.4], 3.3]', [[0, 60, 120, 180, 240, 300, 360], [1.0, 1.8, 2.9, 3.6, 3.1, 2.2, 1.4], 3.3], [[155, 216]]), ('tidal height window [[0, 60, 120, 180, 240], [3.0, 2.6, 2.0, 2.4, 2.8], 2.5]', [[0, 60, 120, 180, 240], [3.0, 2.6, 2.0, 2.4, 2.8], 2.5], [[0, 70], [195, 240]])], [('tidal height window [[0, 60, 120, 180, 240, 300], [0.8, 1.9, 2.6, 1.7, 2.4, 3.0], 2.2]', [[0, 60, 120, 180, 240, 300], [0.8, 1.9, 2.6, 1.7, 2.4, 3.0], 2.2], [[86, 146], [223, 300]]), ('tidal height window [[0, 30, 60, 90, 120], [1.0, 2.0, 3.0, 2.0, 1.0], 2.0]', [[0, 30, 60, 90, 120], [1.0, 2.0, 3.0, 2.0, 1.0], 2.0], [[30, 90]]), ('tidal height window [[0, 60, 120, 180, 240, 300, 360], [1.0, 1.8, 2.9, 3.6, 3.1, 2.2, 1.4], 2.5]', [[0, 60, 120, 180, 240, 300, 360], [1.0, 1.8, 2.9, 3.6, 3.1, 2.2, 1.4], 2.5], [[99, 280]]), ('tidal height window [[0, 60, 120, 180, 240, 300, 360], [1.0, 1.8, 2.9, 3.6, 3.1, 2.2, 1.4], 3.3]', [[0, 60, 120, 180, 240, 300, 360], [1.0, 1.8, 2.9, 3.6, 3.1, 2.2, 1.4], 3.3], [[155, 216]]), ('tidal height window [[0, 60, 120, 180, 240], [3.0, 2.6, 2.0, 2.4, 2.8], 2.5]', [[0, 60, 120, 180, 240], [3.0, 2.6, 2.0, 2.4, 2.8], 2.5], [[0, 70], [195, 240]]), ('tidal height window [[0, 60, 120, 180, 240], [2.5, 2.6, 2.0, 2.4, 2.8], 2.5]', [[0, 60, 120, 180, 240], [2.5, 2.6, 2.0, 2.4, 2.8], 2.5], [[0, 70], [195, 240]]), ('tidal height window [[0, 45, 90, 135], [0.5, 0.7, 0.9, 0.6], 2.0]', [[0, 45, 90, 135], [0.5, 0.7, 0.9, 0.6], 2.0], [])]]\nfor label, args, expected in fixtures[N-1]:\n    check(label, solve(args), 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":"b9ad412f0018b7362c736295bcf463b3518985de5fcefd253ee0e5e02f0c4805","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\nimport math\nN = 1\nobservations = []\ndef solve(x):\n    ts,hs,req=x\n    wins=[]\n    def close(a,b):\n        s0,e0=math.ceil(a-1e-9),math.floor(b+1e-9)\n        if s0<=e0: wins.append([s0,e0])\n    start=ts[0] if hs[0]>=req else None\n    for k in range(1,len(ts)):\n        a,b=hs[k-1],hs[k]\n        if (a>=req)!=(b>=req):\n            tc=ts[k-1]+(ts[k]-ts[k-1])*(req-a)/(b-a)\n            if b>=req: start=ts[k]\n            else:\n                if start is not None: close(start,tc)\n                start=None\n    if start is not None: close(start,ts[-1])\n    return wins\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\nfixtures = [[('tidal height window [[0, 60, 120, 180, 240, 300, 360], [1.0, 1.8, 2.9, 3.6, 3.1, 2.2, 1.4], 2.5]', [[0, 60, 120, 180, 240, 300, 360], [1.0, 1.8, 2.9, 3.6, 3.1, 2.2, 1.4], 2.5], [[99, 280]]), ('tidal height window [[0, 60, 120, 180, 240, 300, 360], [1.0, 1.8, 2.9, 3.6, 3.1, 2.2, 1.4], 3.3]', [[0, 60, 120, 180, 240, 300, 360], [1.0, 1.8, 2.9, 3.6, 3.1, 2.2, 1.4], 3.3], [[155, 216]]), ('tidal height window [[0, 60, 120, 180, 240], [3.0, 2.6, 2.0, 2.4, 2.8], 2.5]', [[0, 60, 120, 180, 240], [3.0, 2.6, 2.0, 2.4, 2.8], 2.5], [[0, 70], [195, 240]]), ('tidal height window [[0, 60, 120, 180, 240], [2.5, 2.6, 2.0, 2.4, 2.8], 2.5]', [[0, 60, 120, 180, 240], [2.5, 2.6, 2.0, 2.4, 2.8], 2.5], [[0, 70], [195, 240]]), ('tidal height window [[0, 30, 60, 90, 120], [1.0, 2.0, 3.0, 2.0, 1.0], 2.0]', [[0, 30, 60, 90, 120], [1.0, 2.0, 3.0, 2.0, 1.0], 2.0], [[30, 90]]), ('tidal height window [[0, 45, 90, 135], [0.5, 0.7, 0.9, 0.6], 2.0]', [[0, 45, 90, 135], [0.5, 0.7, 0.9, 0.6], 2.0], []), ('tidal height window [[0, 60, 120], [2.1, 2.2, 2.3], 2.0]', [[0, 60, 120], [2.1, 2.2, 2.3], 2.0], [[0, 120]])], [('tidal height window [[0, 60, 120, 180, 240, 300, 360], [1.0, 1.8, 2.9, 3.6, 3.1, 2.2, 1.4], 3.3]', [[0, 60, 120, 180, 240, 300, 360], [1.0, 1.8, 2.9, 3.6, 3.1, 2.2, 1.4], 3.3], [[155, 216]]), ('tidal height window [[0, 60, 120, 180, 240], [2.5, 2.6, 2.0, 2.4, 2.8], 2.5]', [[0, 60, 120, 180, 240], [2.5, 2.6, 2.0, 2.4, 2.8], 2.5], [[0, 70], [195, 240]]), ('tidal height window [[0, 30, 60, 90, 120], [1.0, 2.0, 3.0, 2.0, 1.0], 2.0]', [[0, 30, 60, 90, 120], [1.0, 2.0, 3.0, 2.0, 1.0], 2.0], [[30, 90]]), ('tidal height window [[0, 45, 90, 135], [0.5, 0.7, 0.9, 0.6], 2.0]', [[0, 45, 90, 135], [0.5, 0.7, 0.9, 0.6], 2.0], []), ('tidal height window [[0, 60, 120], [2.1, 2.2, 2.3], 2.0]', [[0, 60, 120], [2.1, 2.2, 2.3], 2.0], [[0, 120]]), ('tidal height window [[0, 60, 120, 180, 240, 300], [0.8, 1.9, 2.6, 1.7, 2.4, 3.0], 2.2]', [[0, 60, 120, 180, 240, 300], [0.8, 1.9, 2.6, 1.7, 2.4, 3.0], 2.2], [[86, 146], [223, 300]]), ('tidal height window [[0, 50, 100, 150], [1.0, 2.0, 3.0, 1.0], 1.5]', [[0, 50, 100, 150], [1.0, 2.0, 3.0, 1.0], 1.5], [[25, 137]])], [('tidal height window [[0, 60, 120, 180, 240], [3.0, 2.6, 2.0, 2.4, 2.8], 2.5]', [[0, 60, 120, 180, 240], [3.0, 2.6, 2.0, 2.4, 2.8], 2.5], [[0, 70], [195, 240]]), ('tidal height window [[0, 60, 120], [2.1, 2.2, 2.3], 2.0]', [[0, 60, 120], [2.1, 2.2, 2.3], 2.0], [[0, 120]]), ('tidal height window [[0, 60, 120, 180, 240, 300], [0.8, 1.9, 2.6, 1.7, 2.4, 3.0], 2.2]', [[0, 60, 120, 180, 240, 300], [0.8, 1.9, 2.6, 1.7, 2.4, 3.0], 2.2], [[86, 146], [223, 300]]), ('tidal height window [[0, 50, 100, 150], [1.0, 2.0, 3.0, 1.0], 1.5]', [[0, 50, 100, 150], [1.0, 2.0, 3.0, 1.0], 1.5], [[25, 137]]), ('tidal height window [[100, 160, 220, 280], [1.0, 1.3, 1.9, 2.2], 1.45]', [[100, 160, 220, 280], [1.0, 1.3, 1.9, 2.2], 1.45], [[175, 280]]), ('tidal height window [[0, 60, 120, 180], [3.0, 1.0, 1.0, 3.0], 1.5]', [[0, 60, 120, 180], [3.0, 1.0, 1.0, 3.0], 1.5], [[0, 45], [135, 180]]), ('tidal height window [[0, 60, 120, 180, 240], [1.0, 2.5, 1.0, 2.6, 1.0], 2.0]', [[0, 60, 120, 180, 240], [1.0, 2.5, 1.0, 2.6, 1.0], 2.0], [[40, 80], [158, 202]])], [('tidal height window [[0, 60, 120, 180, 240], [2.5, 2.6, 2.0, 2.4, 2.8], 2.5]', [[0, 60, 120, 180, 240], [2.5, 2.6, 2.0, 2.4, 2.8], 2.5], [[0, 70], [195, 240]]), ('tidal height window [[100, 160, 220, 280], [1.0, 1.3, 1.9, 2.2], 1.45]', [[100, 160, 220, 280], [1.0, 1.3, 1.9, 2.2], 1.45], [[175, 280]]), ('tidal height window [[0, 60, 120, 180], [3.0, 1.0, 1.0, 3.0], 1.5]', [[0, 60, 120, 180], [3.0, 1.0, 1.0, 3.0], 1.5], [[0, 45], [135, 180]]), ('tidal height window [[0, 60, 120, 180, 240], [1.0, 2.5, 1.0, 2.6, 1.0], 2.0]', [[0, 60, 120, 180, 240], [1.0, 2.5, 1.0, 2.6, 1.0], 2.0], [[40, 80], [158, 202]]), ('tidal height window [[0, 60, 120, 180, 240, 300, 360], [1.0, 1.8, 2.9, 3.6, 3.1, 2.2, 1.4], 2.5]', [[0, 60, 120, 180, 240, 300, 360], [1.0, 1.8, 2.9, 3.6, 3.1, 2.2, 1.4], 2.5], [[99, 280]]), ('tidal height window [[0, 60, 120, 180, 240, 300, 360], [1.0, 1.8, 2.9, 3.6, 3.1, 2.2, 1.4], 3.3]', [[0, 60, 120, 180, 240, 300, 360], [1.0, 1.8, 2.9, 3.6, 3.1, 2.2, 1.4], 3.3], [[155, 216]]), ('tidal height window [[0, 60, 120, 180, 240], [3.0, 2.6, 2.0, 2.4, 2.8], 2.5]', [[0, 60, 120, 180, 240], [3.0, 2.6, 2.0, 2.4, 2.8], 2.5], [[0, 70], [195, 240]])], [('tidal height window [[0, 60, 120, 180, 240, 300], [0.8, 1.9, 2.6, 1.7, 2.4, 3.0], 2.2]', [[0, 60, 120, 180, 240, 300], [0.8, 1.9, 2.6, 1.7, 2.4, 3.0], 2.2], [[86, 146], [223, 300]]), ('tidal height window [[0, 30, 60, 90, 120], [1.0, 2.0, 3.0, 2.0, 1.0], 2.0]', [[0, 30, 60, 90, 120], [1.0, 2.0, 3.0, 2.0, 1.0], 2.0], [[30, 90]]), ('tidal height window [[0, 60, 120, 180, 240, 300, 360], [1.0, 1.8, 2.9, 3.6, 3.1, 2.2, 1.4], 2.5]', [[0, 60, 120, 180, 240, 300, 360], [1.0, 1.8, 2.9, 3.6, 3.1, 2.2, 1.4], 2.5], [[99, 280]]), ('tidal height window [[0, 60, 120, 180, 240, 300, 360], [1.0, 1.8, 2.9, 3.6, 3.1, 2.2, 1.4], 3.3]', [[0, 60, 120, 180, 240, 300, 360], [1.0, 1.8, 2.9, 3.6, 3.1, 2.2, 1.4], 3.3], [[155, 216]]), ('tidal height window [[0, 60, 120, 180, 240], [3.0, 2.6, 2.0, 2.4, 2.8], 2.5]', [[0, 60, 120, 180, 240], [3.0, 2.6, 2.0, 2.4, 2.8], 2.5], [[0, 70], [195, 240]]), ('tidal height window [[0, 60, 120, 180, 240], [2.5, 2.6, 2.0, 2.4, 2.8], 2.5]', [[0, 60, 120, 180, 240], [2.5, 2.6, 2.0, 2.4, 2.8], 2.5], [[0, 70], [195, 240]]), ('tidal height window [[0, 45, 90, 135], [0.5, 0.7, 0.9, 0.6], 2.0]', [[0, 45, 90, 135], [0.5, 0.7, 0.9, 0.6], 2.0], [])]]\nfor label, args, expected in fixtures[N-1]:\n    check(label, solve(args), 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"},"fixed":{"sha256":"b7c4a9b7194d50c2f9da55a10fb14e47443684a5170bf2105d9fcb1530b596da","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\nimport math\nN = 1\nobservations = []\ndef solve(x):\n    ts,hs,req=x\n    wins=[]\n    def close(a,b):\n        s0,e0=math.ceil(a-1e-9),math.floor(b+1e-9)\n        if s0<=e0: wins.append([s0,e0])\n    start=ts[0] if hs[0]>=req else None\n    for k in range(1,len(ts)):\n        a,b=hs[k-1],hs[k]\n        if (a>=req)!=(b>=req):\n            tc=ts[k-1]+(ts[k]-ts[k-1])*(req-a)/(b-a)\n            if b>=req: start=tc\n            else:\n                if start is not None: close(start,tc)\n                start=None\n    if start is not None: close(start,ts[-1])\n    return wins\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\nfixtures = [[('tidal height window [[0, 60, 120, 180, 240, 300, 360], [1.0, 1.8, 2.9, 3.6, 3.1, 2.2, 1.4], 2.5]', [[0, 60, 120, 180, 240, 300, 360], [1.0, 1.8, 2.9, 3.6, 3.1, 2.2, 1.4], 2.5], [[99, 280]]), ('tidal height window [[0, 60, 120, 180, 240, 300, 360], [1.0, 1.8, 2.9, 3.6, 3.1, 2.2, 1.4], 3.3]', [[0, 60, 120, 180, 240, 300, 360], [1.0, 1.8, 2.9, 3.6, 3.1, 2.2, 1.4], 3.3], [[155, 216]]), ('tidal height window [[0, 60, 120, 180, 240], [3.0, 2.6, 2.0, 2.4, 2.8], 2.5]', [[0, 60, 120, 180, 240], [3.0, 2.6, 2.0, 2.4, 2.8], 2.5], [[0, 70], [195, 240]]), ('tidal height window [[0, 60, 120, 180, 240], [2.5, 2.6, 2.0, 2.4, 2.8], 2.5]', [[0, 60, 120, 180, 240], [2.5, 2.6, 2.0, 2.4, 2.8], 2.5], [[0, 70], [195, 240]]), ('tidal height window [[0, 30, 60, 90, 120], [1.0, 2.0, 3.0, 2.0, 1.0], 2.0]', [[0, 30, 60, 90, 120], [1.0, 2.0, 3.0, 2.0, 1.0], 2.0], [[30, 90]]), ('tidal height window [[0, 45, 90, 135], [0.5, 0.7, 0.9, 0.6], 2.0]', [[0, 45, 90, 135], [0.5, 0.7, 0.9, 0.6], 2.0], []), ('tidal height window [[0, 60, 120], [2.1, 2.2, 2.3], 2.0]', [[0, 60, 120], [2.1, 2.2, 2.3], 2.0], [[0, 120]])], [('tidal height window [[0, 60, 120, 180, 240, 300, 360], [1.0, 1.8, 2.9, 3.6, 3.1, 2.2, 1.4], 3.3]', [[0, 60, 120, 180, 240, 300, 360], [1.0, 1.8, 2.9, 3.6, 3.1, 2.2, 1.4], 3.3], [[155, 216]]), ('tidal height window [[0, 60, 120, 180, 240], [2.5, 2.6, 2.0, 2.4, 2.8], 2.5]', [[0, 60, 120, 180, 240], [2.5, 2.6, 2.0, 2.4, 2.8], 2.5], [[0, 70], [195, 240]]), ('tidal height window [[0, 30, 60, 90, 120], [1.0, 2.0, 3.0, 2.0, 1.0], 2.0]', [[0, 30, 60, 90, 120], [1.0, 2.0, 3.0, 2.0, 1.0], 2.0], [[30, 90]]), ('tidal height window [[0, 45, 90, 135], [0.5, 0.7, 0.9, 0.6], 2.0]', [[0, 45, 90, 135], [0.5, 0.7, 0.9, 0.6], 2.0], []), ('tidal height window [[0, 60, 120], [2.1, 2.2, 2.3], 2.0]', [[0, 60, 120], [2.1, 2.2, 2.3], 2.0], [[0, 120]]), ('tidal height window [[0, 60, 120, 180, 240, 300], [0.8, 1.9, 2.6, 1.7, 2.4, 3.0], 2.2]', [[0, 60, 120, 180, 240, 300], [0.8, 1.9, 2.6, 1.7, 2.4, 3.0], 2.2], [[86, 146], [223, 300]]), ('tidal height window [[0, 50, 100, 150], [1.0, 2.0, 3.0, 1.0], 1.5]', [[0, 50, 100, 150], [1.0, 2.0, 3.0, 1.0], 1.5], [[25, 137]])], [('tidal height window [[0, 60, 120, 180, 240], [3.0, 2.6, 2.0, 2.4, 2.8], 2.5]', [[0, 60, 120, 180, 240], [3.0, 2.6, 2.0, 2.4, 2.8], 2.5], [[0, 70], [195, 240]]), ('tidal height window [[0, 60, 120], [2.1, 2.2, 2.3], 2.0]', [[0, 60, 120], [2.1, 2.2, 2.3], 2.0], [[0, 120]]), ('tidal height window [[0, 60, 120, 180, 240, 300], [0.8, 1.9, 2.6, 1.7, 2.4, 3.0], 2.2]', [[0, 60, 120, 180, 240, 300], [0.8, 1.9, 2.6, 1.7, 2.4, 3.0], 2.2], [[86, 146], [223, 300]]), ('tidal height window [[0, 50, 100, 150], [1.0, 2.0, 3.0, 1.0], 1.5]', [[0, 50, 100, 150], [1.0, 2.0, 3.0, 1.0], 1.5], [[25, 137]]), ('tidal height window [[100, 160, 220, 280], [1.0, 1.3, 1.9, 2.2], 1.45]', [[100, 160, 220, 280], [1.0, 1.3, 1.9, 2.2], 1.45], [[175, 280]]), ('tidal height window [[0, 60, 120, 180], [3.0, 1.0, 1.0, 3.0], 1.5]', [[0, 60, 120, 180], [3.0, 1.0, 1.0, 3.0], 1.5], [[0, 45], [135, 180]]), ('tidal height window [[0, 60, 120, 180, 240], [1.0, 2.5, 1.0, 2.6, 1.0], 2.0]', [[0, 60, 120, 180, 240], [1.0, 2.5, 1.0, 2.6, 1.0], 2.0], [[40, 80], [158, 202]])], [('tidal height window [[0, 60, 120, 180, 240], [2.5, 2.6, 2.0, 2.4, 2.8], 2.5]', [[0, 60, 120, 180, 240], [2.5, 2.6, 2.0, 2.4, 2.8], 2.5], [[0, 70], [195, 240]]), ('tidal height window [[100, 160, 220, 280], [1.0, 1.3, 1.9, 2.2], 1.45]', [[100, 160, 220, 280], [1.0, 1.3, 1.9, 2.2], 1.45], [[175, 280]]), ('tidal height window [[0, 60, 120, 180], [3.0, 1.0, 1.0, 3.0], 1.5]', [[0, 60, 120, 180], [3.0, 1.0, 1.0, 3.0], 1.5], [[0, 45], [135, 180]]), ('tidal height window [[0, 60, 120, 180, 240], [1.0, 2.5, 1.0, 2.6, 1.0], 2.0]', [[0, 60, 120, 180, 240], [1.0, 2.5, 1.0, 2.6, 1.0], 2.0], [[40, 80], [158, 202]]), ('tidal height window [[0, 60, 120, 180, 240, 300, 360], [1.0, 1.8, 2.9, 3.6, 3.1, 2.2, 1.4], 2.5]', [[0, 60, 120, 180, 240, 300, 360], [1.0, 1.8, 2.9, 3.6, 3.1, 2.2, 1.4], 2.5], [[99, 280]]), ('tidal height window [[0, 60, 120, 180, 240, 300, 360], [1.0, 1.8, 2.9, 3.6, 3.1, 2.2, 1.4], 3.3]', [[0, 60, 120, 180, 240, 300, 360], [1.0, 1.8, 2.9, 3.6, 3.1, 2.2, 1.4], 3.3], [[155, 216]]), ('tidal height window [[0, 60, 120, 180, 240], [3.0, 2.6, 2.0, 2.4, 2.8], 2.5]', [[0, 60, 120, 180, 240], [3.0, 2.6, 2.0, 2.4, 2.8], 2.5], [[0, 70], [195, 240]])], [('tidal height window [[0, 60, 120, 180, 240, 300], [0.8, 1.9, 2.6, 1.7, 2.4, 3.0], 2.2]', [[0, 60, 120, 180, 240, 300], [0.8, 1.9, 2.6, 1.7, 2.4, 3.0], 2.2], [[86, 146], [223, 300]]), ('tidal height window [[0, 30, 60, 90, 120], [1.0, 2.0, 3.0, 2.0, 1.0], 2.0]', [[0, 30, 60, 90, 120], [1.0, 2.0, 3.0, 2.0, 1.0], 2.0], [[30, 90]]), ('tidal height window [[0, 60, 120, 180, 240, 300, 360], [1.0, 1.8, 2.9, 3.6, 3.1, 2.2, 1.4], 2.5]', [[0, 60, 120, 180, 240, 300, 360], [1.0, 1.8, 2.9, 3.6, 3.1, 2.2, 1.4], 2.5], [[99, 280]]), ('tidal height window [[0, 60, 120, 180, 240, 300, 360], [1.0, 1.8, 2.9, 3.6, 3.1, 2.2, 1.4], 3.3]', [[0, 60, 120, 180, 240, 300, 360], [1.0, 1.8, 2.9, 3.6, 3.1, 2.2, 1.4], 3.3], [[155, 216]]), ('tidal height window [[0, 60, 120, 180, 240], [3.0, 2.6, 2.0, 2.4, 2.8], 2.5]', [[0, 60, 120, 180, 240], [3.0, 2.6, 2.0, 2.4, 2.8], 2.5], [[0, 70], [195, 240]]), ('tidal height window [[0, 60, 120, 180, 240], [2.5, 2.6, 2.0, 2.4, 2.8], 2.5]', [[0, 60, 120, 180, 240], [2.5, 2.6, 2.0, 2.4, 2.8], 2.5], [[0, 70], [195, 240]]), ('tidal height window [[0, 45, 90, 135], [0.5, 0.7, 0.9, 0.6], 2.0]', [[0, 45, 90, 135], [0.5, 0.7, 0.9, 0.6], 2.0], [])]]\nfor label, args, expected in fixtures[N-1]:\n    check(label, solve(args), 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":"A deterministic toy model with stipulated rules and constants; not certified hydrographic software or a substitute for official tide tables. 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":"w2-tide_and_marine_navigation_tables-tidal_window-opening-crossing","generated_at":"2026-09-29T14:48:08.063321+00:00","license":"CC0-1.0","python":"3.12.14","seed":1,"split":"open-access"},"relevance":"Tide tables and passage plans turn published predictions into go/no-go decisions about depth, clearance and timing.","repair":"Open the window at the interpolated crossing time.","root_cause":"The rising crossing uses the sample time after the crossing rather than the interpolated time.","sha256":"6777836a91f1196e8660e9ffd42070ee006468caa1a87054602a1be2baf55d1b","title":"Tidal height window: Window opens at the next sample instead of the crossing · case 01","variant":1,"variant_policy":"Five numbered records share a model and may reuse boundary fixtures.","verification":{"attempt":{"elapsed_ms":41.249,"exit_code":1,"observations":[{"actual":[[60,280]],"check":"tidal height window [[0, 60, 120, 180, 240, 300, 360], [1.0, 1.8, 2.9, 3.6, 3.1, 2.2, 1.4], 2.5]","expected":[[99,280]],"passed":false},{"actual":[[120,216]],"check":"tidal height window [[0, 60, 120, 180, 240, 300, 360], [1.0, 1.8, 2.9, 3.6, 3.1, 2.2, 1.4], 3.3]","expected":[[155,216]],"passed":false},{"actual":[[0,70],[180,240]],"check":"tidal height window [[0, 60, 120, 180, 240], [3.0, 2.6, 2.0, 2.4, 2.8], 2.5]","expected":[[0,70],[195,240]],"passed":false},{"actual":[[0,70],[180,240]],"check":"tidal height window [[0, 60, 120, 180, 240], [2.5, 2.6, 2.0, 2.4, 2.8], 2.5]","expected":[[0,70],[195,240]],"passed":false},{"actual":[[0,90]],"check":"tidal height window [[0, 30, 60, 90, 120], [1.0, 2.0, 3.0, 2.0, 1.0], 2.0]","expected":[[30,90]],"passed":false},{"actual":[],"check":"tidal height window [[0, 45, 90, 135], [0.5, 0.7, 0.9, 0.6], 2.0]","expected":[],"passed":true},{"actual":[[0,120]],"check":"tidal height window [[0, 60, 120], [2.1, 2.2, 2.3], 2.0]","expected":[[0,120]],"passed":true}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"tidal height window [[0, 60, 120, 180, 240, 300, 360], [1.0, 1.8, 2.9, 3.6, 3.1, 2.2, 1.4], 2.5]\", \"actual\": [[60, 280]], \"expected\": [[99, 280]], \"passed\": false}, {\"check\": \"tidal height window [[0, 60, 120, 180, 240, 300, 360], [1.0, 1.8, 2.9, 3.6, 3.1, 2.2, 1.4], 3.3]\", \"actual\": [[120, 216]], \"expected\": [[155, 216]], \"passed\": false}, {\"check\": \"tidal height window [[0, 60, 120, 180, 240], [3.0, 2.6, 2.0, 2.4, 2.8], 2.5]\", \"actual\": [[0, 70], [180, 240]], \"expected\": [[0, 70], [195, 240]], \"passed\": false}, {\"check\": \"tidal height window [[0, 60, 120, 180, 240], [2.5, 2.6, 2.0, 2.4, 2.8], 2.5]\", \"actual\": [[0, 70], [180, 240]], \"expected\": [[0, 70], [195, 240]], \"passed\": false}, {\"check\": \"tidal height window [[0, 30, 60, 90, 120], [1.0, 2.0, 3.0, 2.0, 1.0], 2.0]\", \"actual\": [[0, 90]], \"expected\": [[30, 90]], \"passed\": false}, {\"check\": \"tidal height window [[0, 45, 90, 135], [0.5, 0.7, 0.9, 0.6], 2.0]\", \"actual\": [], \"expected\": [], \"passed\": true}, {\"check\": \"tidal height window [[0, 60, 120], [2.1, 2.2, 2.3], 2.0]\", \"actual\": [[0, 120]], \"expected\": [[0, 120]], \"passed\": true}], \"passed\": false}\n"},"broken":{"elapsed_ms":40.313,"exit_code":1,"observations":[{"actual":[[120,280]],"check":"tidal height window [[0, 60, 120, 180, 240, 300, 360], [1.0, 1.8, 2.9, 3.6, 3.1, 2.2, 1.4], 2.5]","expected":[[99,280]],"passed":false},{"actual":[[180,216]],"check":"tidal height window [[0, 60, 120, 180, 240, 300, 360], [1.0, 1.8, 2.9, 3.6, 3.1, 2.2, 1.4], 3.3]","expected":[[155,216]],"passed":false},{"actual":[[0,70],[240,240]],"check":"tidal height window [[0, 60, 120, 180, 240], [3.0, 2.6, 2.0, 2.4, 2.8], 2.5]","expected":[[0,70],[195,240]],"passed":false},{"actual":[[0,70],[240,240]],"check":"tidal height window [[0, 60, 120, 180, 240], [2.5, 2.6, 2.0, 2.4, 2.8], 2.5]","expected":[[0,70],[195,240]],"passed":false},{"actual":[[30,90]],"check":"tidal height window [[0, 30, 60, 90, 120], [1.0, 2.0, 3.0, 2.0, 1.0], 2.0]","expected":[[30,90]],"passed":true},{"actual":[],"check":"tidal height window [[0, 45, 90, 135], [0.5, 0.7, 0.9, 0.6], 2.0]","expected":[],"passed":true},{"actual":[[0,120]],"check":"tidal height window [[0, 60, 120], [2.1, 2.2, 2.3], 2.0]","expected":[[0,120]],"passed":true}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"tidal height window [[0, 60, 120, 180, 240, 300, 360], [1.0, 1.8, 2.9, 3.6, 3.1, 2.2, 1.4], 2.5]\", \"actual\": [[120, 280]], \"expected\": [[99, 280]], \"passed\": false}, {\"check\": \"tidal height window [[0, 60, 120, 180, 240, 300, 360], [1.0, 1.8, 2.9, 3.6, 3.1, 2.2, 1.4], 3.3]\", \"actual\": [[180, 216]], \"expected\": [[155, 216]], \"passed\": false}, {\"check\": \"tidal height window [[0, 60, 120, 180, 240], [3.0, 2.6, 2.0, 2.4, 2.8], 2.5]\", \"actual\": [[0, 70], [240, 240]], \"expected\": [[0, 70], [195, 240]], \"passed\": false}, {\"check\": \"tidal height window [[0, 60, 120, 180, 240], [2.5, 2.6, 2.0, 2.4, 2.8], 2.5]\", \"actual\": [[0, 70], [240, 240]], \"expected\": [[0, 70], [195, 240]], \"passed\": false}, {\"check\": \"tidal height window [[0, 30, 60, 90, 120], [1.0, 2.0, 3.0, 2.0, 1.0], 2.0]\", \"actual\": [[30, 90]], \"expected\": [[30, 90]], \"passed\": true}, {\"check\": \"tidal height window [[0, 45, 90, 135], [0.5, 0.7, 0.9, 0.6], 2.0]\", \"actual\": [], \"expected\": [], \"passed\": true}, {\"check\": \"tidal height window [[0, 60, 120], [2.1, 2.2, 2.3], 2.0]\", \"actual\": [[0, 120]], \"expected\": [[0, 120]], \"passed\": true}], \"passed\": false}\n"},"fixed":{"elapsed_ms":39.501,"exit_code":0,"observations":[{"actual":[[99,280]],"check":"tidal height window [[0, 60, 120, 180, 240, 300, 360], [1.0, 1.8, 2.9, 3.6, 3.1, 2.2, 1.4], 2.5]","expected":[[99,280]],"passed":true},{"actual":[[155,216]],"check":"tidal height window [[0, 60, 120, 180, 240, 300, 360], [1.0, 1.8, 2.9, 3.6, 3.1, 2.2, 1.4], 3.3]","expected":[[155,216]],"passed":true},{"actual":[[0,70],[195,240]],"check":"tidal height window [[0, 60, 120, 180, 240], [3.0, 2.6, 2.0, 2.4, 2.8], 2.5]","expected":[[0,70],[195,240]],"passed":true},{"actual":[[0,70],[195,240]],"check":"tidal height window [[0, 60, 120, 180, 240], [2.5, 2.6, 2.0, 2.4, 2.8], 2.5]","expected":[[0,70],[195,240]],"passed":true},{"actual":[[30,90]],"check":"tidal height window [[0, 30, 60, 90, 120], [1.0, 2.0, 3.0, 2.0, 1.0], 2.0]","expected":[[30,90]],"passed":true},{"actual":[],"check":"tidal height window [[0, 45, 90, 135], [0.5, 0.7, 0.9, 0.6], 2.0]","expected":[],"passed":true},{"actual":[[0,120]],"check":"tidal height window [[0, 60, 120], [2.1, 2.2, 2.3], 2.0]","expected":[[0,120]],"passed":true}],"passed":true,"stderr":"","stdout":"{\"observations\": [{\"check\": \"tidal height window [[0, 60, 120, 180, 240, 300, 360], [1.0, 1.8, 2.9, 3.6, 3.1, 2.2, 1.4], 2.5]\", \"actual\": [[99, 280]], \"expected\": [[99, 280]], \"passed\": true}, {\"check\": \"tidal height window [[0, 60, 120, 180, 240, 300, 360], [1.0, 1.8, 2.9, 3.6, 3.1, 2.2, 1.4], 3.3]\", \"actual\": [[155, 216]], \"expected\": [[155, 216]], \"passed\": true}, {\"check\": \"tidal height window [[0, 60, 120, 180, 240], [3.0, 2.6, 2.0, 2.4, 2.8], 2.5]\", \"actual\": [[0, 70], [195, 240]], \"expected\": [[0, 70], [195, 240]], \"passed\": true}, {\"check\": \"tidal height window [[0, 60, 120, 180, 240], [2.5, 2.6, 2.0, 2.4, 2.8], 2.5]\", \"actual\": [[0, 70], [195, 240]], \"expected\": [[0, 70], [195, 240]], \"passed\": true}, {\"check\": \"tidal height window [[0, 30, 60, 90, 120], [1.0, 2.0, 3.0, 2.0, 1.0], 2.0]\", \"actual\": [[30, 90]], \"expected\": [[30, 90]], \"passed\": true}, {\"check\": \"tidal height window [[0, 45, 90, 135], [0.5, 0.7, 0.9, 0.6], 2.0]\", \"actual\": [], \"expected\": [], \"passed\": true}, {\"check\": \"tidal height window [[0, 60, 120], [2.1, 2.2, 2.3], 2.0]\", \"actual\": [[0, 120]], \"expected\": [[0, 120]], \"passed\": true}], \"passed\": true}\n"}},"verified":true,"visibility":"public"}