FAILURE MAP
← Case archive

FA-85891 / Game economy crafting balance / Open access

Salvage component return: Over-repaired items salvage above full value · case 01

Items repaired past maximum durability return more than 100% condition.

Verified by executionVariant 1 · 8 checks per implementationDownload source bundle ↓JSON ↗

ROOT CAUSE

Current durability is not clamped to maximum before computing condition.

VERIFIED REPAIR

Restore `d = min(item['durability'], mx)` at the over-repair clamp step.

Unsuccessful approach: Clamping to a fixed 100 only works for items whose maximum durability is 100.

Case contract

Return rate: common 50%, rare 70%, epic 90%. Condition d/mx with d clamped to mx; max_durability 0 means indestructible (full condition). Durability <= 0 yields {"scrap": 1}. Each component amount = floor(count*pct*d/(100*mx)) computed once; rare and epic items return at least 1 of each component; zero amounts are omitted.

Why this case matters

Game economies leak or destroy currency when one crafting or pricing rule is off by one boundary, rounding stage or state update; the defect is observable in exact integer outcomes.

1 / The failure

Exit 1
"""Failure Map reference implementation. Python standard library only."""
import json

N = 1
observations = []
def solve(item, components):
    pct = {'common': 50, 'rare': 70, 'epic': 90}[item['rarity']]
    mx = item['max_durability']
    if mx == 0:
        d, mx = 1, 1
    else:
        d = item['durability']
    if d <= 0:
        return {'scrap': 1}
    out = {}
    for name, count in components.items():
        amt = count * pct * d // (100 * mx)
        if item['rarity'] != 'common' and amt < 1:
            amt = 1
        if amt:
            out[name] = amt
    return dict(sorted(out.items()))
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
cases = [[('over-repaired common #1',
   [{'rarity': 'common', 'durability': 30, 'max_durability': 20}, {'ingot': 4, 'cloth': 3}],
   {'cloth': 1, 'ingot': 2}),
  ('regression over-repair clamp #1',
   [{'rarity': 'epic', 'durability': 12, 'max_durability': 7}, {'ingot': 5}],
   {'ingot': 4}),
  ('regression over-repair clamp #2',
   [{'rarity': 'rare', 'durability': 12, 'max_durability': 7}, {'cloth': 3}],
   {'cloth': 2}),
  ('regression over-repair clamp #3',
   [{'rarity': 'epic', 'durability': 12, 'max_durability': 7}, {'thread': 4, 'ingot': 5}],
   {'ingot': 4, 'thread': 3}),
  ('regression over-repair clamp #4',
   [{'rarity': 'rare', 'durability': 15, 'max_durability': 10}, {'thread': 2, 'ingot': 3, 'shard': 2}],
   {'ingot': 2, 'shard': 1, 'thread': 1}),
  ('indestructible relic #1',
   [{'rarity': 'epic', 'durability': 0, 'max_durability': 0}, {'shard': 5}],
   {'shard': 4}),
  ('broken rare #1',
   [{'rarity': 'rare', 'durability': 0, 'max_durability': 40}, {'thread': 2}],
   {'scrap': 1}),
  ('control #1',
   [{'rarity': 'common', 'durability': 3, 'max_durability': 10}, {'thread': 4, 'cloth': 5}],
   {})],
 [('over-repaired common #1',
   [{'rarity': 'common', 'durability': 30, 'max_durability': 20}, {'ingot': 4, 'cloth': 3}],
   {'cloth': 1, 'ingot': 2}),
  ('regression over-repair clamp #1',
   [{'rarity': 'rare', 'durability': 12, 'max_durability': 7}, {'cloth': 3}],
   {'cloth': 2}),
  ('regression over-repair clamp #2',
   [{'rarity': 'epic', 'durability': 12, 'max_durability': 7}, {'thread': 4, 'ingot': 5}],
   {'ingot': 4, 'thread': 3}),
  ('regression over-repair clamp #3',
   [{'rarity': 'rare', 'durability': 15, 'max_durability': 10}, {'thread': 2, 'ingot': 3, 'shard': 2}],
   {'ingot': 2, 'shard': 1, 'thread': 1}),
  ('regression over-repair clamp #4',
   [{'rarity': 'epic', 'durability': 25, 'max_durability': 20}, {'ingot': 6}],
   {'ingot': 5}),
  ('indestructible relic #1',
   [{'rarity': 'epic', 'durability': 0, 'max_durability': 0}, {'shard': 5}],
   {'shard': 4}),
  ('broken rare #1',
   [{'rarity': 'rare', 'durability': 0, 'max_durability': 40}, {'thread': 2}],
   {'scrap': 1}),
  ('control #1',
   [{'rarity': 'common', 'durability': 3, 'max_durability': 10}, {'thread': 4, 'cloth': 5}],
   {})],
 [('over-repaired common #1',
   [{'rarity': 'common', 'durability': 30, 'max_durability': 20}, {'ingot': 4, 'cloth': 3}],
   {'cloth': 1, 'ingot': 2}),
  ('regression over-repair clamp #1',
   [{'rarity': 'rare', 'durability': 15, 'max_durability': 10}, {'thread': 2, 'ingot': 3, 'shard': 2}],
   {'ingot': 2, 'shard': 1, 'thread': 1}),
  ('regression over-repair clamp #2',
   [{'rarity': 'epic', 'durability': 25, 'max_durability': 20}, {'ingot': 6}],
   {'ingot': 5}),
  ('regression over-repair clamp #3',
   [{'rarity': 'rare', 'durability': 25, 'max_durability': 20}, {'ingot': 5, 'thread': 2, 'shard': 1}],
   {'ingot': 3, 'shard': 1, 'thread': 1}),
  ('regression over-repair clamp #4',
   [{'rarity': 'epic', 'durability': 15, 'max_durability': 10}, {'shard': 6}],
   {'shard': 5}),
  ('indestructible relic #1',
   [{'rarity': 'epic', 'durability': 0, 'max_durability': 0}, {'shard': 5}],
   {'shard': 4}),
  ('broken rare #1',
   [{'rarity': 'rare', 'durability': 0, 'max_durability': 40}, {'thread': 2}],
   {'scrap': 1}),
  ('control #1',
   [{'rarity': 'common', 'durability': 3, 'max_durability': 10}, {'thread': 4, 'cloth': 5}],
   {})],
 [('over-repaired common #1',
   [{'rarity': 'common', 'durability': 30, 'max_durability': 20}, {'ingot': 4, 'cloth': 3}],
   {'cloth': 1, 'ingot': 2}),
  ('regression over-repair clamp #1',
   [{'rarity': 'rare', 'durability': 25, 'max_durability': 20}, {'ingot': 5, 'thread': 2, 'shard': 1}],
   {'ingot': 3, 'shard': 1, 'thread': 1}),
  ('regression over-repair clamp #2',
   [{'rarity': 'epic', 'durability': 15, 'max_durability': 10}, {'shard': 6}],
   {'shard': 5}),
  ('regression over-repair clamp #3',
   [{'rarity': 'rare', 'durability': 25, 'max_durability': 20}, {'shard': 4, 'thread': 2, 'ingot': 1}],
   {'ingot': 1, 'shard': 2, 'thread': 1}),
  ('regression over-repair clamp #4',
   [{'rarity': 'epic', 'durability': 25, 'max_durability': 20}, {'shard': 5, 'cloth': 3}],
   {'cloth': 2, 'shard': 4}),
  ('indestructible relic #1',
   [{'rarity': 'epic', 'durability': 0, 'max_durability': 0}, {'shard': 5}],
   {'shard': 4}),
  ('broken rare #1',
   [{'rarity': 'rare', 'durability': 0, 'max_durability': 40}, {'thread': 2}],
   {'scrap': 1}),
  ('control #1', [{'rarity': 'rare', 'durability': 0, 'max_durability': 100}, {'shard': 5}], {'scrap': 1})],
 [('over-repaired common #1',
   [{'rarity': 'common', 'durability': 30, 'max_durability': 20}, {'ingot': 4, 'cloth': 3}],
   {'cloth': 1, 'ingot': 2}),
  ('regression over-repair clamp #1',
   [{'rarity': 'rare', 'durability': 25, 'max_durability': 20}, {'shard': 4, 'thread': 2, 'ingot': 1}],
   {'ingot': 1, 'shard': 2, 'thread': 1}),
  ('regression over-repair clamp #2',
   [{'rarity': 'epic', 'durability': 25, 'max_durability': 20}, {'shard': 5, 'cloth': 3}],
   {'cloth': 2, 'shard': 4}),
  ('regression over-repair clamp #3',
   [{'rarity': 'rare', 'durability': 25, 'max_durability': 20}, {'ingot': 6, 'cloth': 3}],
   {'cloth': 2, 'ingot': 4}),
  ('regression over-repair clamp #4',
   [{'rarity': 'common', 'durability': 12, 'max_durability': 7}, {'shard': 6, 'cloth': 6}],
   {'cloth': 3, 'shard': 3}),
  ('indestructible relic #1',
   [{'rarity': 'epic', 'durability': 0, 'max_durability': 0}, {'shard': 5}],
   {'shard': 4}),
  ('broken rare #1',
   [{'rarity': 'rare', 'durability': 0, 'max_durability': 40}, {'thread': 2}],
   {'scrap': 1}),
  ('control #1',
   [{'rarity': 'rare', 'durability': 1, 'max_durability': 0}, {'cloth': 5, 'ingot': 4, 'shard': 1}],
   {'cloth': 3, 'ingot': 2, 'shard': 1})]]
for label, args, expected in cases[N-1]:
    check(label, solve(*args), expected)
print(json.dumps({"observations": observations, "passed": all(x["passed"] for x in observations)}, ensure_ascii=False))
raise SystemExit(0 if all(x["passed"] for x in observations) else 1)
Boundary fixtureActualExpectedOutcome
over-repaired common #1{'cloth': 2, 'ingot': 3}{'cloth': 1, 'ingot': 2}Failed
regression over-repair clamp #1{'ingot': 7}{'ingot': 4}Failed
regression over-repair clamp #2{'cloth': 3}{'cloth': 2}Failed
regression over-repair clamp #3{'ingot': 7, 'thread': 6}{'ingot': 4, 'thread': 3}Failed
regression over-repair clamp #4{'ingot': 3, 'shard': 2, 'thread': 2}{'ingot': 2, 'shard': 1, 'thread': 1}Failed
indestructible relic #1{'shard': 4}{'shard': 4}Passed
broken rare #1{'scrap': 1}{'scrap': 1}Passed
control #1{}{}Passed

SHA-256 / 114e81946b3af153ce78008f8455af25b48050a1b850d877228cf752feb0c972

2 / The unsuccessful fix

Exit 1
"""Failure Map reference implementation. Python standard library only."""
import json

N = 1
observations = []
def solve(item, components):
    pct = {'common': 50, 'rare': 70, 'epic': 90}[item['rarity']]
    mx = item['max_durability']
    if mx == 0:
        d, mx = 1, 1
    else:
        d = min(item['durability'], 100)
    if d <= 0:
        return {'scrap': 1}
    out = {}
    for name, count in components.items():
        amt = count * pct * d // (100 * mx)
        if item['rarity'] != 'common' and amt < 1:
            amt = 1
        if amt:
            out[name] = amt
    return dict(sorted(out.items()))
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
cases = [[('over-repaired common #1',
   [{'rarity': 'common', 'durability': 30, 'max_durability': 20}, {'ingot': 4, 'cloth': 3}],
   {'cloth': 1, 'ingot': 2}),
  ('regression over-repair clamp #1',
   [{'rarity': 'epic', 'durability': 12, 'max_durability': 7}, {'ingot': 5}],
   {'ingot': 4}),
  ('regression over-repair clamp #2',
   [{'rarity': 'rare', 'durability': 12, 'max_durability': 7}, {'cloth': 3}],
   {'cloth': 2}),
  ('regression over-repair clamp #3',
   [{'rarity': 'epic', 'durability': 12, 'max_durability': 7}, {'thread': 4, 'ingot': 5}],
   {'ingot': 4, 'thread': 3}),
  ('regression over-repair clamp #4',
   [{'rarity': 'rare', 'durability': 15, 'max_durability': 10}, {'thread': 2, 'ingot': 3, 'shard': 2}],
   {'ingot': 2, 'shard': 1, 'thread': 1}),
  ('indestructible relic #1',
   [{'rarity': 'epic', 'durability': 0, 'max_durability': 0}, {'shard': 5}],
   {'shard': 4}),
  ('broken rare #1',
   [{'rarity': 'rare', 'durability': 0, 'max_durability': 40}, {'thread': 2}],
   {'scrap': 1}),
  ('control #1',
   [{'rarity': 'common', 'durability': 3, 'max_durability': 10}, {'thread': 4, 'cloth': 5}],
   {})],
 [('over-repaired common #1',
   [{'rarity': 'common', 'durability': 30, 'max_durability': 20}, {'ingot': 4, 'cloth': 3}],
   {'cloth': 1, 'ingot': 2}),
  ('regression over-repair clamp #1',
   [{'rarity': 'rare', 'durability': 12, 'max_durability': 7}, {'cloth': 3}],
   {'cloth': 2}),
  ('regression over-repair clamp #2',
   [{'rarity': 'epic', 'durability': 12, 'max_durability': 7}, {'thread': 4, 'ingot': 5}],
   {'ingot': 4, 'thread': 3}),
  ('regression over-repair clamp #3',
   [{'rarity': 'rare', 'durability': 15, 'max_durability': 10}, {'thread': 2, 'ingot': 3, 'shard': 2}],
   {'ingot': 2, 'shard': 1, 'thread': 1}),
  ('regression over-repair clamp #4',
   [{'rarity': 'epic', 'durability': 25, 'max_durability': 20}, {'ingot': 6}],
   {'ingot': 5}),
  ('indestructible relic #1',
   [{'rarity': 'epic', 'durability': 0, 'max_durability': 0}, {'shard': 5}],
   {'shard': 4}),
  ('broken rare #1',
   [{'rarity': 'rare', 'durability': 0, 'max_durability': 40}, {'thread': 2}],
   {'scrap': 1}),
  ('control #1',
   [{'rarity': 'common', 'durability': 3, 'max_durability': 10}, {'thread': 4, 'cloth': 5}],
   {})],
 [('over-repaired common #1',
   [{'rarity': 'common', 'durability': 30, 'max_durability': 20}, {'ingot': 4, 'cloth': 3}],
   {'cloth': 1, 'ingot': 2}),
  ('regression over-repair clamp #1',
   [{'rarity': 'rare', 'durability': 15, 'max_durability': 10}, {'thread': 2, 'ingot': 3, 'shard': 2}],
   {'ingot': 2, 'shard': 1, 'thread': 1}),
  ('regression over-repair clamp #2',
   [{'rarity': 'epic', 'durability': 25, 'max_durability': 20}, {'ingot': 6}],
   {'ingot': 5}),
  ('regression over-repair clamp #3',
   [{'rarity': 'rare', 'durability': 25, 'max_durability': 20}, {'ingot': 5, 'thread': 2, 'shard': 1}],
   {'ingot': 3, 'shard': 1, 'thread': 1}),
  ('regression over-repair clamp #4',
   [{'rarity': 'epic', 'durability': 15, 'max_durability': 10}, {'shard': 6}],
   {'shard': 5}),
  ('indestructible relic #1',
   [{'rarity': 'epic', 'durability': 0, 'max_durability': 0}, {'shard': 5}],
   {'shard': 4}),
  ('broken rare #1',
   [{'rarity': 'rare', 'durability': 0, 'max_durability': 40}, {'thread': 2}],
   {'scrap': 1}),
  ('control #1',
   [{'rarity': 'common', 'durability': 3, 'max_durability': 10}, {'thread': 4, 'cloth': 5}],
   {})],
 [('over-repaired common #1',
   [{'rarity': 'common', 'durability': 30, 'max_durability': 20}, {'ingot': 4, 'cloth': 3}],
   {'cloth': 1, 'ingot': 2}),
  ('regression over-repair clamp #1',
   [{'rarity': 'rare', 'durability': 25, 'max_durability': 20}, {'ingot': 5, 'thread': 2, 'shard': 1}],
   {'ingot': 3, 'shard': 1, 'thread': 1}),
  ('regression over-repair clamp #2',
   [{'rarity': 'epic', 'durability': 15, 'max_durability': 10}, {'shard': 6}],
   {'shard': 5}),
  ('regression over-repair clamp #3',
   [{'rarity': 'rare', 'durability': 25, 'max_durability': 20}, {'shard': 4, 'thread': 2, 'ingot': 1}],
   {'ingot': 1, 'shard': 2, 'thread': 1}),
  ('regression over-repair clamp #4',
   [{'rarity': 'epic', 'durability': 25, 'max_durability': 20}, {'shard': 5, 'cloth': 3}],
   {'cloth': 2, 'shard': 4}),
  ('indestructible relic #1',
   [{'rarity': 'epic', 'durability': 0, 'max_durability': 0}, {'shard': 5}],
   {'shard': 4}),
  ('broken rare #1',
   [{'rarity': 'rare', 'durability': 0, 'max_durability': 40}, {'thread': 2}],
   {'scrap': 1}),
  ('control #1', [{'rarity': 'rare', 'durability': 0, 'max_durability': 100}, {'shard': 5}], {'scrap': 1})],
 [('over-repaired common #1',
   [{'rarity': 'common', 'durability': 30, 'max_durability': 20}, {'ingot': 4, 'cloth': 3}],
   {'cloth': 1, 'ingot': 2}),
  ('regression over-repair clamp #1',
   [{'rarity': 'rare', 'durability': 25, 'max_durability': 20}, {'shard': 4, 'thread': 2, 'ingot': 1}],
   {'ingot': 1, 'shard': 2, 'thread': 1}),
  ('regression over-repair clamp #2',
   [{'rarity': 'epic', 'durability': 25, 'max_durability': 20}, {'shard': 5, 'cloth': 3}],
   {'cloth': 2, 'shard': 4}),
  ('regression over-repair clamp #3',
   [{'rarity': 'rare', 'durability': 25, 'max_durability': 20}, {'ingot': 6, 'cloth': 3}],
   {'cloth': 2, 'ingot': 4}),
  ('regression over-repair clamp #4',
   [{'rarity': 'common', 'durability': 12, 'max_durability': 7}, {'shard': 6, 'cloth': 6}],
   {'cloth': 3, 'shard': 3}),
  ('indestructible relic #1',
   [{'rarity': 'epic', 'durability': 0, 'max_durability': 0}, {'shard': 5}],
   {'shard': 4}),
  ('broken rare #1',
   [{'rarity': 'rare', 'durability': 0, 'max_durability': 40}, {'thread': 2}],
   {'scrap': 1}),
  ('control #1',
   [{'rarity': 'rare', 'durability': 1, 'max_durability': 0}, {'cloth': 5, 'ingot': 4, 'shard': 1}],
   {'cloth': 3, 'ingot': 2, 'shard': 1})]]
for label, args, expected in cases[N-1]:
    check(label, solve(*args), expected)
print(json.dumps({"observations": observations, "passed": all(x["passed"] for x in observations)}, ensure_ascii=False))
raise SystemExit(0 if all(x["passed"] for x in observations) else 1)
Boundary fixtureActualExpectedOutcome
over-repaired common #1{'cloth': 2, 'ingot': 3}{'cloth': 1, 'ingot': 2}Failed
regression over-repair clamp #1{'ingot': 7}{'ingot': 4}Failed
regression over-repair clamp #2{'cloth': 3}{'cloth': 2}Failed
regression over-repair clamp #3{'ingot': 7, 'thread': 6}{'ingot': 4, 'thread': 3}Failed
regression over-repair clamp #4{'ingot': 3, 'shard': 2, 'thread': 2}{'ingot': 2, 'shard': 1, 'thread': 1}Failed
indestructible relic #1{'shard': 4}{'shard': 4}Passed
broken rare #1{'scrap': 1}{'scrap': 1}Passed
control #1{}{}Passed

SHA-256 / 7921b45635c10b2a446924dd7fb0f95a6fa2c0c24001e888eff0b9cc7550a385

3 / The verified repair

Exit 0
"""Failure Map reference implementation. Python standard library only."""
import json

N = 1
observations = []
def solve(item, components):
    pct = {'common': 50, 'rare': 70, 'epic': 90}[item['rarity']]
    mx = item['max_durability']
    if mx == 0:
        d, mx = 1, 1
    else:
        d = min(item['durability'], mx)
    if d <= 0:
        return {'scrap': 1}
    out = {}
    for name, count in components.items():
        amt = count * pct * d // (100 * mx)
        if item['rarity'] != 'common' and amt < 1:
            amt = 1
        if amt:
            out[name] = amt
    return dict(sorted(out.items()))
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
cases = [[('over-repaired common #1',
   [{'rarity': 'common', 'durability': 30, 'max_durability': 20}, {'ingot': 4, 'cloth': 3}],
   {'cloth': 1, 'ingot': 2}),
  ('regression over-repair clamp #1',
   [{'rarity': 'epic', 'durability': 12, 'max_durability': 7}, {'ingot': 5}],
   {'ingot': 4}),
  ('regression over-repair clamp #2',
   [{'rarity': 'rare', 'durability': 12, 'max_durability': 7}, {'cloth': 3}],
   {'cloth': 2}),
  ('regression over-repair clamp #3',
   [{'rarity': 'epic', 'durability': 12, 'max_durability': 7}, {'thread': 4, 'ingot': 5}],
   {'ingot': 4, 'thread': 3}),
  ('regression over-repair clamp #4',
   [{'rarity': 'rare', 'durability': 15, 'max_durability': 10}, {'thread': 2, 'ingot': 3, 'shard': 2}],
   {'ingot': 2, 'shard': 1, 'thread': 1}),
  ('indestructible relic #1',
   [{'rarity': 'epic', 'durability': 0, 'max_durability': 0}, {'shard': 5}],
   {'shard': 4}),
  ('broken rare #1',
   [{'rarity': 'rare', 'durability': 0, 'max_durability': 40}, {'thread': 2}],
   {'scrap': 1}),
  ('control #1',
   [{'rarity': 'common', 'durability': 3, 'max_durability': 10}, {'thread': 4, 'cloth': 5}],
   {})],
 [('over-repaired common #1',
   [{'rarity': 'common', 'durability': 30, 'max_durability': 20}, {'ingot': 4, 'cloth': 3}],
   {'cloth': 1, 'ingot': 2}),
  ('regression over-repair clamp #1',
   [{'rarity': 'rare', 'durability': 12, 'max_durability': 7}, {'cloth': 3}],
   {'cloth': 2}),
  ('regression over-repair clamp #2',
   [{'rarity': 'epic', 'durability': 12, 'max_durability': 7}, {'thread': 4, 'ingot': 5}],
   {'ingot': 4, 'thread': 3}),
  ('regression over-repair clamp #3',
   [{'rarity': 'rare', 'durability': 15, 'max_durability': 10}, {'thread': 2, 'ingot': 3, 'shard': 2}],
   {'ingot': 2, 'shard': 1, 'thread': 1}),
  ('regression over-repair clamp #4',
   [{'rarity': 'epic', 'durability': 25, 'max_durability': 20}, {'ingot': 6}],
   {'ingot': 5}),
  ('indestructible relic #1',
   [{'rarity': 'epic', 'durability': 0, 'max_durability': 0}, {'shard': 5}],
   {'shard': 4}),
  ('broken rare #1',
   [{'rarity': 'rare', 'durability': 0, 'max_durability': 40}, {'thread': 2}],
   {'scrap': 1}),
  ('control #1',
   [{'rarity': 'common', 'durability': 3, 'max_durability': 10}, {'thread': 4, 'cloth': 5}],
   {})],
 [('over-repaired common #1',
   [{'rarity': 'common', 'durability': 30, 'max_durability': 20}, {'ingot': 4, 'cloth': 3}],
   {'cloth': 1, 'ingot': 2}),
  ('regression over-repair clamp #1',
   [{'rarity': 'rare', 'durability': 15, 'max_durability': 10}, {'thread': 2, 'ingot': 3, 'shard': 2}],
   {'ingot': 2, 'shard': 1, 'thread': 1}),
  ('regression over-repair clamp #2',
   [{'rarity': 'epic', 'durability': 25, 'max_durability': 20}, {'ingot': 6}],
   {'ingot': 5}),
  ('regression over-repair clamp #3',
   [{'rarity': 'rare', 'durability': 25, 'max_durability': 20}, {'ingot': 5, 'thread': 2, 'shard': 1}],
   {'ingot': 3, 'shard': 1, 'thread': 1}),
  ('regression over-repair clamp #4',
   [{'rarity': 'epic', 'durability': 15, 'max_durability': 10}, {'shard': 6}],
   {'shard': 5}),
  ('indestructible relic #1',
   [{'rarity': 'epic', 'durability': 0, 'max_durability': 0}, {'shard': 5}],
   {'shard': 4}),
  ('broken rare #1',
   [{'rarity': 'rare', 'durability': 0, 'max_durability': 40}, {'thread': 2}],
   {'scrap': 1}),
  ('control #1',
   [{'rarity': 'common', 'durability': 3, 'max_durability': 10}, {'thread': 4, 'cloth': 5}],
   {})],
 [('over-repaired common #1',
   [{'rarity': 'common', 'durability': 30, 'max_durability': 20}, {'ingot': 4, 'cloth': 3}],
   {'cloth': 1, 'ingot': 2}),
  ('regression over-repair clamp #1',
   [{'rarity': 'rare', 'durability': 25, 'max_durability': 20}, {'ingot': 5, 'thread': 2, 'shard': 1}],
   {'ingot': 3, 'shard': 1, 'thread': 1}),
  ('regression over-repair clamp #2',
   [{'rarity': 'epic', 'durability': 15, 'max_durability': 10}, {'shard': 6}],
   {'shard': 5}),
  ('regression over-repair clamp #3',
   [{'rarity': 'rare', 'durability': 25, 'max_durability': 20}, {'shard': 4, 'thread': 2, 'ingot': 1}],
   {'ingot': 1, 'shard': 2, 'thread': 1}),
  ('regression over-repair clamp #4',
   [{'rarity': 'epic', 'durability': 25, 'max_durability': 20}, {'shard': 5, 'cloth': 3}],
   {'cloth': 2, 'shard': 4}),
  ('indestructible relic #1',
   [{'rarity': 'epic', 'durability': 0, 'max_durability': 0}, {'shard': 5}],
   {'shard': 4}),
  ('broken rare #1',
   [{'rarity': 'rare', 'durability': 0, 'max_durability': 40}, {'thread': 2}],
   {'scrap': 1}),
  ('control #1', [{'rarity': 'rare', 'durability': 0, 'max_durability': 100}, {'shard': 5}], {'scrap': 1})],
 [('over-repaired common #1',
   [{'rarity': 'common', 'durability': 30, 'max_durability': 20}, {'ingot': 4, 'cloth': 3}],
   {'cloth': 1, 'ingot': 2}),
  ('regression over-repair clamp #1',
   [{'rarity': 'rare', 'durability': 25, 'max_durability': 20}, {'shard': 4, 'thread': 2, 'ingot': 1}],
   {'ingot': 1, 'shard': 2, 'thread': 1}),
  ('regression over-repair clamp #2',
   [{'rarity': 'epic', 'durability': 25, 'max_durability': 20}, {'shard': 5, 'cloth': 3}],
   {'cloth': 2, 'shard': 4}),
  ('regression over-repair clamp #3',
   [{'rarity': 'rare', 'durability': 25, 'max_durability': 20}, {'ingot': 6, 'cloth': 3}],
   {'cloth': 2, 'ingot': 4}),
  ('regression over-repair clamp #4',
   [{'rarity': 'common', 'durability': 12, 'max_durability': 7}, {'shard': 6, 'cloth': 6}],
   {'cloth': 3, 'shard': 3}),
  ('indestructible relic #1',
   [{'rarity': 'epic', 'durability': 0, 'max_durability': 0}, {'shard': 5}],
   {'shard': 4}),
  ('broken rare #1',
   [{'rarity': 'rare', 'durability': 0, 'max_durability': 40}, {'thread': 2}],
   {'scrap': 1}),
  ('control #1',
   [{'rarity': 'rare', 'durability': 1, 'max_durability': 0}, {'cloth': 5, 'ingot': 4, 'shard': 1}],
   {'cloth': 3, 'ingot': 2, 'shard': 1})]]
for label, args, expected in cases[N-1]:
    check(label, solve(*args), expected)
print(json.dumps({"observations": observations, "passed": all(x["passed"] for x in observations)}, ensure_ascii=False))
raise SystemExit(0 if all(x["passed"] for x in observations) else 1)
Boundary fixtureActualExpectedOutcome
over-repaired common #1{'cloth': 1, 'ingot': 2}{'cloth': 1, 'ingot': 2}Passed
regression over-repair clamp #1{'ingot': 4}{'ingot': 4}Passed
regression over-repair clamp #2{'cloth': 2}{'cloth': 2}Passed
regression over-repair clamp #3{'ingot': 4, 'thread': 3}{'ingot': 4, 'thread': 3}Passed
regression over-repair clamp #4{'ingot': 2, 'shard': 1, 'thread': 1}{'ingot': 2, 'shard': 1, 'thread': 1}Passed
indestructible relic #1{'shard': 4}{'shard': 4}Passed
broken rare #1{'scrap': 1}{'scrap': 1}Passed
control #1{}{}Passed

SHA-256 / 50ea256fa37a12f7297a5e50536887dd0256732fa27a5419a2ffdc844e9f7d1a

Verification & scope

Deterministic toy contract stipulated for this model; integer or exact arithmetic only, not a reproduction of any specific game engine. 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.

Observations recorded using Python 3.12.14 at 2026-09-29T14:50:44.479165+00:00.

Case digest / 4caf0c56219c26a486e585177d5e2228318579468980514467c0188ffb4542c5