{"abstract":"Drivers receive only 75% of every tip.","category":"Ride-hailing fare and surge pricing","checks":7,"contract":"Driver pay per trip in cents: the surged core fare (core x surge tenths, half up) minus the commission percentage (floored), raised to min_pay if lower; tolls and tips pass through untouched and are outside commission and the minimum; the booking fee is platform revenue. A quest bonus is paid when this trip is exactly the Nth trip for a quest threshold N (trips_before + 1 == N). Return pay and bonus.","contract_signature":"trip, plan","evaluation_group":"w2-ride-hailing-fare-surge-driver-earnings","failed_approach":"Moving tolls into the commission base both taxes and double-pays tolls.","family":"w2-ride-hailing-fare-surge-driver-earnings-commission-on-tips","id":"FA-85566","implementations":{"attempt":{"sha256":"63bed224262ce53975b0defc76c981f286795cd343f7a47484ddb9734a1ebe3b","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(trip, plan):\n    surged = (trip['core'] * trip['surge'] * 2 + 10) // 20\n    share = (surged + trip['tolls']) * (100 - plan['commission']) // 100\n    share = max(share, plan['min_pay'])\n    pay = share + trip['tolls'] + trip['tip']\n    n = plan['trips_before'] + 1\n    bonus = 0\n    for need, amount in plan['quests']:\n        if n == need:\n            bonus += amount\n    return {'pay': pay, 'bonus': bonus}\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\nfixtures = [[('regression: commission on tips',\n   [{'booking_fee': 0, 'core': 900, 'surge': 15, 'tip': 200, 'tolls': 0},\n    {'commission': 20, 'min_pay': 400, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 3}],\n   {'bonus': 0, 'pay': 1280}),\n  ('partial repair probe: commission on tips',\n   [{'booking_fee': 0, 'core': 2500, 'surge': 20, 'tip': 0, 'tolls': 300},\n    {'commission': 25, 'min_pay': 400, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 3}],\n   {'bonus': 0, 'pay': 4050}),\n  ('second regression',\n   [{'booking_fee': 0, 'core': 2500, 'surge': 15, 'tip': 500, 'tolls': 0},\n    {'commission': 25, 'min_pay': 700, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 19}],\n   {'bonus': 2500, 'pay': 3312}),\n  ('normal control 1',\n   [{'booking_fee': 250, 'core': 1733, 'surge': 15, 'tip': 0, 'tolls': 0},\n    {'commission': 20, 'min_pay': 700, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 24}],\n   {'bonus': 1000, 'pay': 2080}),\n  ('normal control 2',\n   [{'booking_fee': 250, 'core': 2500, 'surge': 10, 'tip': 0, 'tolls': 0},\n    {'commission': 20, 'min_pay': 400, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 24}],\n   {'bonus': 1000, 'pay': 2000}),\n  ('normal control 3',\n   [{'booking_fee': 250, 'core': 900, 'surge': 20, 'tip': 0, 'tolls': 0},\n    {'commission': 20, 'min_pay': 700, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 3}],\n   {'bonus': 0, 'pay': 1440}),\n  ('normal control 4',\n   [{'booking_fee': 0, 'core': 1733, 'surge': 15, 'tip': 0, 'tolls': 0},\n    {'commission': 20, 'min_pay': 700, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 19}],\n   {'bonus': 2500, 'pay': 2080})],\n [('regression: commission on tips',\n   [{'booking_fee': 250, 'core': 900, 'surge': 15, 'tip': 500, 'tolls': 0},\n    {'commission': 20, 'min_pay': 500, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 9}],\n   {'bonus': 1500, 'pay': 1580}),\n  ('partial repair probe: commission on tips',\n   [{'booking_fee': 250, 'core': 450, 'surge': 15, 'tip': 0, 'tolls': 300},\n    {'commission': 20, 'min_pay': 400, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 19}],\n   {'bonus': 2500, 'pay': 840}),\n  ('second regression',\n   [{'booking_fee': 0, 'core': 450, 'surge': 10, 'tip': 0, 'tolls': 300},\n    {'commission': 20, 'min_pay': 400, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 24}],\n   {'bonus': 1000, 'pay': 700}),\n  ('normal control 1',\n   [{'booking_fee': 0, 'core': 900, 'surge': 12, 'tip': 0, 'tolls': 0},\n    {'commission': 25, 'min_pay': 500, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 3}],\n   {'bonus': 0, 'pay': 810}),\n  ('normal control 2',\n   [{'booking_fee': 0, 'core': 450, 'surge': 20, 'tip': 0, 'tolls': 0},\n    {'commission': 25, 'min_pay': 500, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 3}],\n   {'bonus': 0, 'pay': 675}),\n  ('normal control 3',\n   [{'booking_fee': 250, 'core': 1733, 'surge': 15, 'tip': 0, 'tolls': 0},\n    {'commission': 20, 'min_pay': 700, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 9}],\n   {'bonus': 1500, 'pay': 2080}),\n  ('normal control 4',\n   [{'booking_fee': 250, 'core': 1733, 'surge': 12, 'tip': 0, 'tolls': 0},\n    {'commission': 25, 'min_pay': 500, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 9}],\n   {'bonus': 1500, 'pay': 1560})],\n [('regression: commission on tips',\n   [{'booking_fee': 0, 'core': 1733, 'surge': 10, 'tip': 200, 'tolls': 0},\n    {'commission': 20, 'min_pay': 700, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 3}],\n   {'bonus': 0, 'pay': 1586}),\n  ('partial repair probe: commission on tips',\n   [{'booking_fee': 0, 'core': 2500, 'surge': 10, 'tip': 0, 'tolls': 300},\n    {'commission': 25, 'min_pay': 700, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 19}],\n   {'bonus': 2500, 'pay': 2175}),\n  ('second regression',\n   [{'booking_fee': 0, 'core': 2500, 'surge': 15, 'tip': 0, 'tolls': 300},\n    {'commission': 25, 'min_pay': 700, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 10}],\n   {'bonus': 0, 'pay': 3112}),\n  ('normal control 1',\n   [{'booking_fee': 0, 'core': 1733, 'surge': 12, 'tip': 0, 'tolls': 0},\n    {'commission': 25, 'min_pay': 500, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 24}],\n   {'bonus': 1000, 'pay': 1560}),\n  ('normal control 2',\n   [{'booking_fee': 250, 'core': 2500, 'surge': 10, 'tip': 0, 'tolls': 0},\n    {'commission': 20, 'min_pay': 500, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 24}],\n   {'bonus': 1000, 'pay': 2000}),\n  ('normal control 3',\n   [{'booking_fee': 0, 'core': 1733, 'surge': 15, 'tip': 0, 'tolls': 0},\n    {'commission': 25, 'min_pay': 400, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 20}],\n   {'bonus': 0, 'pay': 1950}),\n  ('normal control 4',\n   [{'booking_fee': 0, 'core': 900, 'surge': 15, 'tip': 0, 'tolls': 0},\n    {'commission': 25, 'min_pay': 500, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 19}],\n   {'bonus': 2500, 'pay': 1012})],\n [('regression: commission on tips',\n   [{'booking_fee': 0, 'core': 2500, 'surge': 10, 'tip': 500, 'tolls': 0},\n    {'commission': 25, 'min_pay': 500, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 9}],\n   {'bonus': 1500, 'pay': 2375}),\n  ('partial repair probe: commission on tips',\n   [{'booking_fee': 250, 'core': 450, 'surge': 12, 'tip': 0, 'tolls': 300},\n    {'commission': 20, 'min_pay': 500, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 20}],\n   {'bonus': 0, 'pay': 800}),\n  ('second regression',\n   [{'booking_fee': 0, 'core': 1733, 'surge': 15, 'tip': 500, 'tolls': 300},\n    {'commission': 25, 'min_pay': 500, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 24}],\n   {'bonus': 1000, 'pay': 2750}),\n  ('normal control 1',\n   [{'booking_fee': 250, 'core': 450, 'surge': 12, 'tip': 0, 'tolls': 0},\n    {'commission': 20, 'min_pay': 400, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 24}],\n   {'bonus': 1000, 'pay': 432}),\n  ('normal control 2',\n   [{'booking_fee': 0, 'core': 900, 'surge': 20, 'tip': 0, 'tolls': 0},\n    {'commission': 20, 'min_pay': 700, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 10}],\n   {'bonus': 0, 'pay': 1440}),\n  ('normal control 3',\n   [{'booking_fee': 0, 'core': 900, 'surge': 20, 'tip': 0, 'tolls': 0},\n    {'commission': 20, 'min_pay': 500, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 19}],\n   {'bonus': 2500, 'pay': 1440}),\n  ('normal control 4',\n   [{'booking_fee': 0, 'core': 900, 'surge': 20, 'tip': 0, 'tolls': 0},\n    {'commission': 20, 'min_pay': 700, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 20}],\n   {'bonus': 0, 'pay': 1440})],\n [('regression: commission on tips',\n   [{'booking_fee': 250, 'core': 2500, 'surge': 10, 'tip': 200, 'tolls': 300},\n    {'commission': 20, 'min_pay': 700, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 24}],\n   {'bonus': 1000, 'pay': 2500}),\n  ('partial repair probe: commission on tips',\n   [{'booking_fee': 250, 'core': 1733, 'surge': 20, 'tip': 500, 'tolls': 300},\n    {'commission': 25, 'min_pay': 700, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 10}],\n   {'bonus': 0, 'pay': 3399}),\n  ('second regression',\n   [{'booking_fee': 250, 'core': 450, 'surge': 10, 'tip': 200, 'tolls': 0},\n    {'commission': 20, 'min_pay': 500, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 10}],\n   {'bonus': 0, 'pay': 700}),\n  ('normal control 1',\n   [{'booking_fee': 250, 'core': 1733, 'surge': 15, 'tip': 0, 'tolls': 0},\n    {'commission': 20, 'min_pay': 500, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 3}],\n   {'bonus': 0, 'pay': 2080}),\n  ('normal control 2',\n   [{'booking_fee': 0, 'core': 1733, 'surge': 20, 'tip': 0, 'tolls': 0},\n    {'commission': 25, 'min_pay': 700, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 19}],\n   {'bonus': 2500, 'pay': 2599}),\n  ('normal control 3',\n   [{'booking_fee': 250, 'core': 900, 'surge': 20, 'tip': 0, 'tolls': 0},\n    {'commission': 20, 'min_pay': 400, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 9}],\n   {'bonus': 1500, 'pay': 1440}),\n  ('normal control 4',\n   [{'booking_fee': 0, 'core': 1733, 'surge': 10, 'tip': 0, 'tolls': 0},\n    {'commission': 20, 'min_pay': 500, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 24}],\n   {'bonus': 1000, 'pay': 1386})]]\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":"9a7043a0c3f4463077136a987ac3ed8bcd660321dcb7571ea59d90c6468245fc","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(trip, plan):\n    surged = (trip['core'] * trip['surge'] * 2 + 10) // 20\n    share = (surged + trip['tip']) * (100 - plan['commission']) // 100\n    share = max(share, plan['min_pay'])\n    pay = share + trip['tolls']\n    n = plan['trips_before'] + 1\n    bonus = 0\n    for need, amount in plan['quests']:\n        if n == need:\n            bonus += amount\n    return {'pay': pay, 'bonus': bonus}\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\nfixtures = [[('regression: commission on tips',\n   [{'booking_fee': 0, 'core': 900, 'surge': 15, 'tip': 200, 'tolls': 0},\n    {'commission': 20, 'min_pay': 400, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 3}],\n   {'bonus': 0, 'pay': 1280}),\n  ('partial repair probe: commission on tips',\n   [{'booking_fee': 0, 'core': 2500, 'surge': 20, 'tip': 0, 'tolls': 300},\n    {'commission': 25, 'min_pay': 400, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 3}],\n   {'bonus': 0, 'pay': 4050}),\n  ('second regression',\n   [{'booking_fee': 0, 'core': 2500, 'surge': 15, 'tip': 500, 'tolls': 0},\n    {'commission': 25, 'min_pay': 700, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 19}],\n   {'bonus': 2500, 'pay': 3312}),\n  ('normal control 1',\n   [{'booking_fee': 250, 'core': 1733, 'surge': 15, 'tip': 0, 'tolls': 0},\n    {'commission': 20, 'min_pay': 700, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 24}],\n   {'bonus': 1000, 'pay': 2080}),\n  ('normal control 2',\n   [{'booking_fee': 250, 'core': 2500, 'surge': 10, 'tip': 0, 'tolls': 0},\n    {'commission': 20, 'min_pay': 400, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 24}],\n   {'bonus': 1000, 'pay': 2000}),\n  ('normal control 3',\n   [{'booking_fee': 250, 'core': 900, 'surge': 20, 'tip': 0, 'tolls': 0},\n    {'commission': 20, 'min_pay': 700, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 3}],\n   {'bonus': 0, 'pay': 1440}),\n  ('normal control 4',\n   [{'booking_fee': 0, 'core': 1733, 'surge': 15, 'tip': 0, 'tolls': 0},\n    {'commission': 20, 'min_pay': 700, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 19}],\n   {'bonus': 2500, 'pay': 2080})],\n [('regression: commission on tips',\n   [{'booking_fee': 250, 'core': 900, 'surge': 15, 'tip': 500, 'tolls': 0},\n    {'commission': 20, 'min_pay': 500, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 9}],\n   {'bonus': 1500, 'pay': 1580}),\n  ('partial repair probe: commission on tips',\n   [{'booking_fee': 250, 'core': 450, 'surge': 15, 'tip': 0, 'tolls': 300},\n    {'commission': 20, 'min_pay': 400, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 19}],\n   {'bonus': 2500, 'pay': 840}),\n  ('second regression',\n   [{'booking_fee': 0, 'core': 450, 'surge': 10, 'tip': 0, 'tolls': 300},\n    {'commission': 20, 'min_pay': 400, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 24}],\n   {'bonus': 1000, 'pay': 700}),\n  ('normal control 1',\n   [{'booking_fee': 0, 'core': 900, 'surge': 12, 'tip': 0, 'tolls': 0},\n    {'commission': 25, 'min_pay': 500, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 3}],\n   {'bonus': 0, 'pay': 810}),\n  ('normal control 2',\n   [{'booking_fee': 0, 'core': 450, 'surge': 20, 'tip': 0, 'tolls': 0},\n    {'commission': 25, 'min_pay': 500, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 3}],\n   {'bonus': 0, 'pay': 675}),\n  ('normal control 3',\n   [{'booking_fee': 250, 'core': 1733, 'surge': 15, 'tip': 0, 'tolls': 0},\n    {'commission': 20, 'min_pay': 700, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 9}],\n   {'bonus': 1500, 'pay': 2080}),\n  ('normal control 4',\n   [{'booking_fee': 250, 'core': 1733, 'surge': 12, 'tip': 0, 'tolls': 0},\n    {'commission': 25, 'min_pay': 500, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 9}],\n   {'bonus': 1500, 'pay': 1560})],\n [('regression: commission on tips',\n   [{'booking_fee': 0, 'core': 1733, 'surge': 10, 'tip': 200, 'tolls': 0},\n    {'commission': 20, 'min_pay': 700, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 3}],\n   {'bonus': 0, 'pay': 1586}),\n  ('partial repair probe: commission on tips',\n   [{'booking_fee': 0, 'core': 2500, 'surge': 10, 'tip': 0, 'tolls': 300},\n    {'commission': 25, 'min_pay': 700, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 19}],\n   {'bonus': 2500, 'pay': 2175}),\n  ('second regression',\n   [{'booking_fee': 0, 'core': 2500, 'surge': 15, 'tip': 0, 'tolls': 300},\n    {'commission': 25, 'min_pay': 700, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 10}],\n   {'bonus': 0, 'pay': 3112}),\n  ('normal control 1',\n   [{'booking_fee': 0, 'core': 1733, 'surge': 12, 'tip': 0, 'tolls': 0},\n    {'commission': 25, 'min_pay': 500, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 24}],\n   {'bonus': 1000, 'pay': 1560}),\n  ('normal control 2',\n   [{'booking_fee': 250, 'core': 2500, 'surge': 10, 'tip': 0, 'tolls': 0},\n    {'commission': 20, 'min_pay': 500, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 24}],\n   {'bonus': 1000, 'pay': 2000}),\n  ('normal control 3',\n   [{'booking_fee': 0, 'core': 1733, 'surge': 15, 'tip': 0, 'tolls': 0},\n    {'commission': 25, 'min_pay': 400, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 20}],\n   {'bonus': 0, 'pay': 1950}),\n  ('normal control 4',\n   [{'booking_fee': 0, 'core': 900, 'surge': 15, 'tip': 0, 'tolls': 0},\n    {'commission': 25, 'min_pay': 500, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 19}],\n   {'bonus': 2500, 'pay': 1012})],\n [('regression: commission on tips',\n   [{'booking_fee': 0, 'core': 2500, 'surge': 10, 'tip': 500, 'tolls': 0},\n    {'commission': 25, 'min_pay': 500, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 9}],\n   {'bonus': 1500, 'pay': 2375}),\n  ('partial repair probe: commission on tips',\n   [{'booking_fee': 250, 'core': 450, 'surge': 12, 'tip': 0, 'tolls': 300},\n    {'commission': 20, 'min_pay': 500, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 20}],\n   {'bonus': 0, 'pay': 800}),\n  ('second regression',\n   [{'booking_fee': 0, 'core': 1733, 'surge': 15, 'tip': 500, 'tolls': 300},\n    {'commission': 25, 'min_pay': 500, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 24}],\n   {'bonus': 1000, 'pay': 2750}),\n  ('normal control 1',\n   [{'booking_fee': 250, 'core': 450, 'surge': 12, 'tip': 0, 'tolls': 0},\n    {'commission': 20, 'min_pay': 400, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 24}],\n   {'bonus': 1000, 'pay': 432}),\n  ('normal control 2',\n   [{'booking_fee': 0, 'core': 900, 'surge': 20, 'tip': 0, 'tolls': 0},\n    {'commission': 20, 'min_pay': 700, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 10}],\n   {'bonus': 0, 'pay': 1440}),\n  ('normal control 3',\n   [{'booking_fee': 0, 'core': 900, 'surge': 20, 'tip': 0, 'tolls': 0},\n    {'commission': 20, 'min_pay': 500, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 19}],\n   {'bonus': 2500, 'pay': 1440}),\n  ('normal control 4',\n   [{'booking_fee': 0, 'core': 900, 'surge': 20, 'tip': 0, 'tolls': 0},\n    {'commission': 20, 'min_pay': 700, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 20}],\n   {'bonus': 0, 'pay': 1440})],\n [('regression: commission on tips',\n   [{'booking_fee': 250, 'core': 2500, 'surge': 10, 'tip': 200, 'tolls': 300},\n    {'commission': 20, 'min_pay': 700, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 24}],\n   {'bonus': 1000, 'pay': 2500}),\n  ('partial repair probe: commission on tips',\n   [{'booking_fee': 250, 'core': 1733, 'surge': 20, 'tip': 500, 'tolls': 300},\n    {'commission': 25, 'min_pay': 700, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 10}],\n   {'bonus': 0, 'pay': 3399}),\n  ('second regression',\n   [{'booking_fee': 250, 'core': 450, 'surge': 10, 'tip': 200, 'tolls': 0},\n    {'commission': 20, 'min_pay': 500, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 10}],\n   {'bonus': 0, 'pay': 700}),\n  ('normal control 1',\n   [{'booking_fee': 250, 'core': 1733, 'surge': 15, 'tip': 0, 'tolls': 0},\n    {'commission': 20, 'min_pay': 500, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 3}],\n   {'bonus': 0, 'pay': 2080}),\n  ('normal control 2',\n   [{'booking_fee': 0, 'core': 1733, 'surge': 20, 'tip': 0, 'tolls': 0},\n    {'commission': 25, 'min_pay': 700, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 19}],\n   {'bonus': 2500, 'pay': 2599}),\n  ('normal control 3',\n   [{'booking_fee': 250, 'core': 900, 'surge': 20, 'tip': 0, 'tolls': 0},\n    {'commission': 20, 'min_pay': 400, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 9}],\n   {'bonus': 1500, 'pay': 1440}),\n  ('normal control 4',\n   [{'booking_fee': 0, 'core': 1733, 'surge': 10, 'tip': 0, 'tolls': 0},\n    {'commission': 20, 'min_pay': 500, 'quests': [[10, 1500], [20, 2500], [25, 1000]], 'trips_before': 24}],\n   {'bonus': 1000, 'pay': 1386})]]\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 pricing contract stipulated for this example; it does not reproduce the pricing of any real ride-hailing operator or regulator. 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-ride-hailing-fare-surge-driver-earnings-commission-on-tips","generated_at":"2026-09-29T14:50:41.589992+00:00","license":"CC0-1.0","python":"3.12.14","seed":1,"split":"open-access"},"relevance":"Ride-hailing prices are computed per trip at scale; ordering, unit and boundary slips become systematic over- or under-charging.","root_cause":"Tips are added before commission is deducted.","sha256":"458ba27940ed73bbc0df86cb833f8fd93c5c2f0b73431f7f604420a63e9c56ac","title":"Platform commission taken from tips · 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":43.877,"exit_code":1,"observations":[{"actual":{"bonus":0,"pay":1280},"check":"regression: commission on tips","expected":{"bonus":0,"pay":1280},"passed":true},{"actual":{"bonus":0,"pay":4275},"check":"partial repair probe: commission on tips","expected":{"bonus":0,"pay":4050},"passed":false},{"actual":{"bonus":2500,"pay":3312},"check":"second regression","expected":{"bonus":2500,"pay":3312},"passed":true},{"actual":{"bonus":1000,"pay":2080},"check":"normal control 1","expected":{"bonus":1000,"pay":2080},"passed":true},{"actual":{"bonus":1000,"pay":2000},"check":"normal control 2","expected":{"bonus":1000,"pay":2000},"passed":true},{"actual":{"bonus":0,"pay":1440},"check":"normal control 3","expected":{"bonus":0,"pay":1440},"passed":true},{"actual":{"bonus":2500,"pay":2080},"check":"normal control 4","expected":{"bonus":2500,"pay":2080},"passed":true}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"regression: commission on tips\", \"actual\": {\"pay\": 1280, \"bonus\": 0}, \"expected\": {\"bonus\": 0, \"pay\": 1280}, \"passed\": true}, {\"check\": \"partial repair probe: commission on tips\", \"actual\": {\"pay\": 4275, \"bonus\": 0}, \"expected\": {\"bonus\": 0, \"pay\": 4050}, \"passed\": false}, {\"check\": \"second regression\", \"actual\": {\"pay\": 3312, \"bonus\": 2500}, \"expected\": {\"bonus\": 2500, \"pay\": 3312}, \"passed\": true}, {\"check\": \"normal control 1\", \"actual\": {\"pay\": 2080, \"bonus\": 1000}, \"expected\": {\"bonus\": 1000, \"pay\": 2080}, \"passed\": true}, {\"check\": \"normal control 2\", \"actual\": {\"pay\": 2000, \"bonus\": 1000}, \"expected\": {\"bonus\": 1000, \"pay\": 2000}, \"passed\": true}, {\"check\": \"normal control 3\", \"actual\": {\"pay\": 1440, \"bonus\": 0}, \"expected\": {\"bonus\": 0, \"pay\": 1440}, \"passed\": true}, {\"check\": \"normal control 4\", \"actual\": {\"pay\": 2080, \"bonus\": 2500}, \"expected\": {\"bonus\": 2500, \"pay\": 2080}, \"passed\": true}], \"passed\": false}\n"},"broken":{"elapsed_ms":40.142,"exit_code":1,"observations":[{"actual":{"bonus":0,"pay":1240},"check":"regression: commission on tips","expected":{"bonus":0,"pay":1280},"passed":false},{"actual":{"bonus":0,"pay":4050},"check":"partial repair probe: commission on tips","expected":{"bonus":0,"pay":4050},"passed":true},{"actual":{"bonus":2500,"pay":3187},"check":"second regression","expected":{"bonus":2500,"pay":3312},"passed":false},{"actual":{"bonus":1000,"pay":2080},"check":"normal control 1","expected":{"bonus":1000,"pay":2080},"passed":true},{"actual":{"bonus":1000,"pay":2000},"check":"normal control 2","expected":{"bonus":1000,"pay":2000},"passed":true},{"actual":{"bonus":0,"pay":1440},"check":"normal control 3","expected":{"bonus":0,"pay":1440},"passed":true},{"actual":{"bonus":2500,"pay":2080},"check":"normal control 4","expected":{"bonus":2500,"pay":2080},"passed":true}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"regression: commission on tips\", \"actual\": {\"pay\": 1240, \"bonus\": 0}, \"expected\": {\"bonus\": 0, \"pay\": 1280}, \"passed\": false}, {\"check\": \"partial repair probe: commission on tips\", \"actual\": {\"pay\": 4050, \"bonus\": 0}, \"expected\": {\"bonus\": 0, \"pay\": 4050}, \"passed\": true}, {\"check\": \"second regression\", \"actual\": {\"pay\": 3187, \"bonus\": 2500}, \"expected\": {\"bonus\": 2500, \"pay\": 3312}, \"passed\": false}, {\"check\": \"normal control 1\", \"actual\": {\"pay\": 2080, \"bonus\": 1000}, \"expected\": {\"bonus\": 1000, \"pay\": 2080}, \"passed\": true}, {\"check\": \"normal control 2\", \"actual\": {\"pay\": 2000, \"bonus\": 1000}, \"expected\": {\"bonus\": 1000, \"pay\": 2000}, \"passed\": true}, {\"check\": \"normal control 3\", \"actual\": {\"pay\": 1440, \"bonus\": 0}, \"expected\": {\"bonus\": 0, \"pay\": 1440}, \"passed\": true}, {\"check\": \"normal control 4\", \"actual\": {\"pay\": 2080, \"bonus\": 2500}, \"expected\": {\"bonus\": 2500, \"pay\": 2080}, \"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."}}