FA-56866 / Auction allocation rules / Open access
Deposit admission: chargeback recovery · case 01
Chargeback reversal leaves admission collateral overstated or negative.
ROOT CAUSE
Chargeback reversal leaves admission collateral overstated or negative.
VERIFIED REPAIR
For chargeback recovery, apply the stipulated decision max(0,x["cleared"]-x["chargeback"]).
Unsuccessful approach: The attempted repair uses x["cleared"]-x["chargeback"]; the explicit regression cases demonstrate that this still violates the stipulated auction rule.
Case contract
Toy bidder deposits consist of cleared, pending and restricted tranches. Deposits are auction-scoped and denomination-specific. Admission capacity is per bidder; a waiver substitutes for a required deposit without turning a pending transfer into cash. Named decision chargeback-recovery: For chargeback recovery, apply the stipulated decision max(0,x["cleared"]-x["chargeback"]).
Why this case matters
Offline administrative auction model for software failure analysis.
1 / The failure
Exit 1"""Failure Map reference implementation. Python standard library only."""
import json
N = 1
observations = []
def solve(x):
v0 = x["cleared"]>=x["required"]
v1 = max(0,x["cleared"]-x["restricted"])
v2 = x["waiver"] or x["cleared"]>=x["required"]
v3 = x["auction"]==x["deposit_auction"]
v4 = x["currency"]==x["deposit_currency"]
v5 = x["cleared"]
v6 = max(0,x["cleared"]-x["locked"])
v7 = x["owner"]==x["beneficiary"] and x["owner"] in x["owners"]
v8 = 0 if x["expired"] else x["cleared"]+(x["topup"] if x["confirmed"] else 0)
v9 = min(x["refunded"],max(0,x["cleared"]-x["locked"]))
return {'cleared-admission':v0,'restricted-tranche':v1,'deposit-waiver-admission':v2,'auction-scope':v3,'denomination-scope':v4,'chargeback-recovery':v5,'withdrawable-deposit':v6,'beneficial-owner':v7,'topup-posting':v8,'refund-available-ceiling':v9}
def check(label, actual, expected):
observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
fixtures = [('normal contract', {'cleared': 20, 'pending': 15, 'restricted': 7, 'required': 25, 'waiver': False, 'auction': 'A', 'deposit_auction': 'A', 'currency': 'TOK', 'deposit_currency': 'TOK', 'chargeback': 3, 'locked': 6, 'owners': ['a', 'b'], 'owner': 'a', 'beneficiary': 'a', 'expired': False, 'topup': 8, 'confirmed': False, 'refunded': 4}, [17, 34, 51, 68, 85]), ('cleared sufficient', {'cleared': 20, 'pending': 15, 'restricted': 7, 'required': 10, 'waiver': False, 'auction': 'A', 'deposit_auction': 'A', 'currency': 'TOK', 'deposit_currency': 'TOK', 'chargeback': 3, 'locked': 6, 'owners': ['a', 'b'], 'owner': 'a', 'beneficiary': 'a', 'expired': False, 'topup': 8, 'confirmed': False, 'refunded': 4}, [17, 34, 51, 68, 85]), ('chargeback consumes balance', {'cleared': 20, 'pending': 15, 'restricted': 7, 'required': 25, 'waiver': False, 'auction': 'A', 'deposit_auction': 'A', 'currency': 'TOK', 'deposit_currency': 'TOK', 'chargeback': 30, 'locked': 6, 'owners': ['a', 'b'], 'owner': 'a', 'beneficiary': 'a', 'expired': False, 'topup': 8, 'confirmed': False, 'refunded': 4}, [0, 0, 0, 0, 0]), ('cleared sufficient / chargeback consumes balance', {'cleared': 20, 'pending': 15, 'restricted': 7, 'required': 10, 'waiver': False, 'auction': 'A', 'deposit_auction': 'A', 'currency': 'TOK', 'deposit_currency': 'TOK', 'chargeback': 30, 'locked': 6, 'owners': ['a', 'b'], 'owner': 'a', 'beneficiary': 'a', 'expired': False, 'topup': 8, 'confirmed': False, 'refunded': 4}, [0, 0, 0, 0, 0]), ('deposit waived', {'cleared': 20, 'pending': 15, 'restricted': 7, 'required': 25, 'waiver': True, 'auction': 'A', 'deposit_auction': 'A', 'currency': 'TOK', 'deposit_currency': 'TOK', 'chargeback': 3, 'locked': 6, 'owners': ['a', 'b'], 'owner': 'a', 'beneficiary': 'a', 'expired': False, 'topup': 8, 'confirmed': False, 'refunded': 4}, [17, 34, 51, 68, 85]), ('wrong auction', {'cleared': 20, 'pending': 15, 'restricted': 7, 'required': 25, 'waiver': False, 'auction': 'A', 'deposit_auction': 'B', 'currency': 'TOK', 'deposit_currency': 'TOK', 'chargeback': 3, 'locked': 6, 'owners': ['a', 'b'], 'owner': 'a', 'beneficiary': 'a', 'expired': False, 'topup': 8, 'confirmed': False, 'refunded': 4}, [17, 34, 51, 68, 85]), ('wrong denomination', {'cleared': 20, 'pending': 15, 'restricted': 7, 'required': 25, 'waiver': False, 'auction': 'A', 'deposit_auction': 'A', 'currency': 'TOK', 'deposit_currency': 'ALT', 'chargeback': 3, 'locked': 6, 'owners': ['a', 'b'], 'owner': 'a', 'beneficiary': 'a', 'expired': False, 'topup': 8, 'confirmed': False, 'refunded': 4}, [17, 34, 51, 68, 85]), ('expired deposit', {'cleared': 20, 'pending': 15, 'restricted': 7, 'required': 25, 'waiver': False, 'auction': 'A', 'deposit_auction': 'A', 'currency': 'TOK', 'deposit_currency': 'TOK', 'chargeback': 3, 'locked': 6, 'owners': ['a', 'b'], 'owner': 'a', 'beneficiary': 'a', 'expired': True, 'topup': 8, 'confirmed': False, 'refunded': 4}, [17, 34, 51, 68, 85]), ('topup confirmed', {'cleared': 20, 'pending': 15, 'restricted': 7, 'required': 25, 'waiver': False, 'auction': 'A', 'deposit_auction': 'A', 'currency': 'TOK', 'deposit_currency': 'TOK', 'chargeback': 3, 'locked': 6, 'owners': ['a', 'b'], 'owner': 'a', 'beneficiary': 'a', 'expired': False, 'topup': 8, 'confirmed': True, 'refunded': 4}, [17, 34, 51, 68, 85]), ('all locked', {'cleared': 20, 'pending': 15, 'restricted': 7, 'required': 25, 'waiver': False, 'auction': 'A', 'deposit_auction': 'A', 'currency': 'TOK', 'deposit_currency': 'TOK', 'chargeback': 3, 'locked': 30, 'owners': ['a', 'b'], 'owner': 'a', 'beneficiary': 'a', 'expired': False, 'topup': 8, 'confirmed': False, 'refunded': 4}, [17, 34, 51, 68, 85])]
def vary(value):
if type(value) is int: return value*N
if isinstance(value,list): return [vary(v) for v in value]
if isinstance(value,dict): return {k:(v if k in ['count', 'delivery_index', 'disputed', 'maximum_set', 'minimum_set', 'stage', 'threshold', 'waived'] else vary(v)) for k,v in value.items()}
return value
for label, request, expected in fixtures:
check(label, solve(vary(request))['chargeback-recovery'], expected[N-1])
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 fixture | Actual | Expected | Outcome |
|---|---|---|---|
| normal contract | 20 | 17 | Failed |
| cleared sufficient | 20 | 17 | Failed |
| chargeback consumes balance | 20 | 0 | Failed |
| cleared sufficient / chargeback consumes balance | 20 | 0 | Failed |
| deposit waived | 20 | 17 | Failed |
| wrong auction | 20 | 17 | Failed |
| wrong denomination | 20 | 17 | Failed |
| expired deposit | 20 | 17 | Failed |
| topup confirmed | 20 | 17 | Failed |
| all locked | 20 | 17 | Failed |
SHA-256 / bfe0b9a89a168400c01a8e9d022c55f6f3d9dc9cd39ccf5668bdc262758efa93
2 / The unsuccessful fix
Exit 1"""Failure Map reference implementation. Python standard library only."""
import json
N = 1
observations = []
def solve(x):
v0 = x["cleared"]>=x["required"]
v1 = max(0,x["cleared"]-x["restricted"])
v2 = x["waiver"] or x["cleared"]>=x["required"]
v3 = x["auction"]==x["deposit_auction"]
v4 = x["currency"]==x["deposit_currency"]
v5 = x["cleared"]-x["chargeback"]
v6 = max(0,x["cleared"]-x["locked"])
v7 = x["owner"]==x["beneficiary"] and x["owner"] in x["owners"]
v8 = 0 if x["expired"] else x["cleared"]+(x["topup"] if x["confirmed"] else 0)
v9 = min(x["refunded"],max(0,x["cleared"]-x["locked"]))
return {'cleared-admission':v0,'restricted-tranche':v1,'deposit-waiver-admission':v2,'auction-scope':v3,'denomination-scope':v4,'chargeback-recovery':v5,'withdrawable-deposit':v6,'beneficial-owner':v7,'topup-posting':v8,'refund-available-ceiling':v9}
def check(label, actual, expected):
observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
fixtures = [('normal contract', {'cleared': 20, 'pending': 15, 'restricted': 7, 'required': 25, 'waiver': False, 'auction': 'A', 'deposit_auction': 'A', 'currency': 'TOK', 'deposit_currency': 'TOK', 'chargeback': 3, 'locked': 6, 'owners': ['a', 'b'], 'owner': 'a', 'beneficiary': 'a', 'expired': False, 'topup': 8, 'confirmed': False, 'refunded': 4}, [17, 34, 51, 68, 85]), ('cleared sufficient', {'cleared': 20, 'pending': 15, 'restricted': 7, 'required': 10, 'waiver': False, 'auction': 'A', 'deposit_auction': 'A', 'currency': 'TOK', 'deposit_currency': 'TOK', 'chargeback': 3, 'locked': 6, 'owners': ['a', 'b'], 'owner': 'a', 'beneficiary': 'a', 'expired': False, 'topup': 8, 'confirmed': False, 'refunded': 4}, [17, 34, 51, 68, 85]), ('chargeback consumes balance', {'cleared': 20, 'pending': 15, 'restricted': 7, 'required': 25, 'waiver': False, 'auction': 'A', 'deposit_auction': 'A', 'currency': 'TOK', 'deposit_currency': 'TOK', 'chargeback': 30, 'locked': 6, 'owners': ['a', 'b'], 'owner': 'a', 'beneficiary': 'a', 'expired': False, 'topup': 8, 'confirmed': False, 'refunded': 4}, [0, 0, 0, 0, 0]), ('cleared sufficient / chargeback consumes balance', {'cleared': 20, 'pending': 15, 'restricted': 7, 'required': 10, 'waiver': False, 'auction': 'A', 'deposit_auction': 'A', 'currency': 'TOK', 'deposit_currency': 'TOK', 'chargeback': 30, 'locked': 6, 'owners': ['a', 'b'], 'owner': 'a', 'beneficiary': 'a', 'expired': False, 'topup': 8, 'confirmed': False, 'refunded': 4}, [0, 0, 0, 0, 0]), ('deposit waived', {'cleared': 20, 'pending': 15, 'restricted': 7, 'required': 25, 'waiver': True, 'auction': 'A', 'deposit_auction': 'A', 'currency': 'TOK', 'deposit_currency': 'TOK', 'chargeback': 3, 'locked': 6, 'owners': ['a', 'b'], 'owner': 'a', 'beneficiary': 'a', 'expired': False, 'topup': 8, 'confirmed': False, 'refunded': 4}, [17, 34, 51, 68, 85]), ('wrong auction', {'cleared': 20, 'pending': 15, 'restricted': 7, 'required': 25, 'waiver': False, 'auction': 'A', 'deposit_auction': 'B', 'currency': 'TOK', 'deposit_currency': 'TOK', 'chargeback': 3, 'locked': 6, 'owners': ['a', 'b'], 'owner': 'a', 'beneficiary': 'a', 'expired': False, 'topup': 8, 'confirmed': False, 'refunded': 4}, [17, 34, 51, 68, 85]), ('wrong denomination', {'cleared': 20, 'pending': 15, 'restricted': 7, 'required': 25, 'waiver': False, 'auction': 'A', 'deposit_auction': 'A', 'currency': 'TOK', 'deposit_currency': 'ALT', 'chargeback': 3, 'locked': 6, 'owners': ['a', 'b'], 'owner': 'a', 'beneficiary': 'a', 'expired': False, 'topup': 8, 'confirmed': False, 'refunded': 4}, [17, 34, 51, 68, 85]), ('expired deposit', {'cleared': 20, 'pending': 15, 'restricted': 7, 'required': 25, 'waiver': False, 'auction': 'A', 'deposit_auction': 'A', 'currency': 'TOK', 'deposit_currency': 'TOK', 'chargeback': 3, 'locked': 6, 'owners': ['a', 'b'], 'owner': 'a', 'beneficiary': 'a', 'expired': True, 'topup': 8, 'confirmed': False, 'refunded': 4}, [17, 34, 51, 68, 85]), ('topup confirmed', {'cleared': 20, 'pending': 15, 'restricted': 7, 'required': 25, 'waiver': False, 'auction': 'A', 'deposit_auction': 'A', 'currency': 'TOK', 'deposit_currency': 'TOK', 'chargeback': 3, 'locked': 6, 'owners': ['a', 'b'], 'owner': 'a', 'beneficiary': 'a', 'expired': False, 'topup': 8, 'confirmed': True, 'refunded': 4}, [17, 34, 51, 68, 85]), ('all locked', {'cleared': 20, 'pending': 15, 'restricted': 7, 'required': 25, 'waiver': False, 'auction': 'A', 'deposit_auction': 'A', 'currency': 'TOK', 'deposit_currency': 'TOK', 'chargeback': 3, 'locked': 30, 'owners': ['a', 'b'], 'owner': 'a', 'beneficiary': 'a', 'expired': False, 'topup': 8, 'confirmed': False, 'refunded': 4}, [17, 34, 51, 68, 85])]
def vary(value):
if type(value) is int: return value*N
if isinstance(value,list): return [vary(v) for v in value]
if isinstance(value,dict): return {k:(v if k in ['count', 'delivery_index', 'disputed', 'maximum_set', 'minimum_set', 'stage', 'threshold', 'waived'] else vary(v)) for k,v in value.items()}
return value
for label, request, expected in fixtures:
check(label, solve(vary(request))['chargeback-recovery'], expected[N-1])
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 fixture | Actual | Expected | Outcome |
|---|---|---|---|
| normal contract | 17 | 17 | Passed |
| cleared sufficient | 17 | 17 | Passed |
| chargeback consumes balance | -10 | 0 | Failed |
| cleared sufficient / chargeback consumes balance | -10 | 0 | Failed |
| deposit waived | 17 | 17 | Passed |
| wrong auction | 17 | 17 | Passed |
| wrong denomination | 17 | 17 | Passed |
| expired deposit | 17 | 17 | Passed |
| topup confirmed | 17 | 17 | Passed |
| all locked | 17 | 17 | Passed |
SHA-256 / aac7c99e74046a5b30363e14891d298f64e32d239e86d2d27979484549244856
3 / The verified repair
Exit 0"""Failure Map reference implementation. Python standard library only."""
import json
N = 1
observations = []
def solve(x):
v0 = x["cleared"]>=x["required"]
v1 = max(0,x["cleared"]-x["restricted"])
v2 = x["waiver"] or x["cleared"]>=x["required"]
v3 = x["auction"]==x["deposit_auction"]
v4 = x["currency"]==x["deposit_currency"]
v5 = max(0,x["cleared"]-x["chargeback"])
v6 = max(0,x["cleared"]-x["locked"])
v7 = x["owner"]==x["beneficiary"] and x["owner"] in x["owners"]
v8 = 0 if x["expired"] else x["cleared"]+(x["topup"] if x["confirmed"] else 0)
v9 = min(x["refunded"],max(0,x["cleared"]-x["locked"]))
return {'cleared-admission':v0,'restricted-tranche':v1,'deposit-waiver-admission':v2,'auction-scope':v3,'denomination-scope':v4,'chargeback-recovery':v5,'withdrawable-deposit':v6,'beneficial-owner':v7,'topup-posting':v8,'refund-available-ceiling':v9}
def check(label, actual, expected):
observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
fixtures = [('normal contract', {'cleared': 20, 'pending': 15, 'restricted': 7, 'required': 25, 'waiver': False, 'auction': 'A', 'deposit_auction': 'A', 'currency': 'TOK', 'deposit_currency': 'TOK', 'chargeback': 3, 'locked': 6, 'owners': ['a', 'b'], 'owner': 'a', 'beneficiary': 'a', 'expired': False, 'topup': 8, 'confirmed': False, 'refunded': 4}, [17, 34, 51, 68, 85]), ('cleared sufficient', {'cleared': 20, 'pending': 15, 'restricted': 7, 'required': 10, 'waiver': False, 'auction': 'A', 'deposit_auction': 'A', 'currency': 'TOK', 'deposit_currency': 'TOK', 'chargeback': 3, 'locked': 6, 'owners': ['a', 'b'], 'owner': 'a', 'beneficiary': 'a', 'expired': False, 'topup': 8, 'confirmed': False, 'refunded': 4}, [17, 34, 51, 68, 85]), ('chargeback consumes balance', {'cleared': 20, 'pending': 15, 'restricted': 7, 'required': 25, 'waiver': False, 'auction': 'A', 'deposit_auction': 'A', 'currency': 'TOK', 'deposit_currency': 'TOK', 'chargeback': 30, 'locked': 6, 'owners': ['a', 'b'], 'owner': 'a', 'beneficiary': 'a', 'expired': False, 'topup': 8, 'confirmed': False, 'refunded': 4}, [0, 0, 0, 0, 0]), ('cleared sufficient / chargeback consumes balance', {'cleared': 20, 'pending': 15, 'restricted': 7, 'required': 10, 'waiver': False, 'auction': 'A', 'deposit_auction': 'A', 'currency': 'TOK', 'deposit_currency': 'TOK', 'chargeback': 30, 'locked': 6, 'owners': ['a', 'b'], 'owner': 'a', 'beneficiary': 'a', 'expired': False, 'topup': 8, 'confirmed': False, 'refunded': 4}, [0, 0, 0, 0, 0]), ('deposit waived', {'cleared': 20, 'pending': 15, 'restricted': 7, 'required': 25, 'waiver': True, 'auction': 'A', 'deposit_auction': 'A', 'currency': 'TOK', 'deposit_currency': 'TOK', 'chargeback': 3, 'locked': 6, 'owners': ['a', 'b'], 'owner': 'a', 'beneficiary': 'a', 'expired': False, 'topup': 8, 'confirmed': False, 'refunded': 4}, [17, 34, 51, 68, 85]), ('wrong auction', {'cleared': 20, 'pending': 15, 'restricted': 7, 'required': 25, 'waiver': False, 'auction': 'A', 'deposit_auction': 'B', 'currency': 'TOK', 'deposit_currency': 'TOK', 'chargeback': 3, 'locked': 6, 'owners': ['a', 'b'], 'owner': 'a', 'beneficiary': 'a', 'expired': False, 'topup': 8, 'confirmed': False, 'refunded': 4}, [17, 34, 51, 68, 85]), ('wrong denomination', {'cleared': 20, 'pending': 15, 'restricted': 7, 'required': 25, 'waiver': False, 'auction': 'A', 'deposit_auction': 'A', 'currency': 'TOK', 'deposit_currency': 'ALT', 'chargeback': 3, 'locked': 6, 'owners': ['a', 'b'], 'owner': 'a', 'beneficiary': 'a', 'expired': False, 'topup': 8, 'confirmed': False, 'refunded': 4}, [17, 34, 51, 68, 85]), ('expired deposit', {'cleared': 20, 'pending': 15, 'restricted': 7, 'required': 25, 'waiver': False, 'auction': 'A', 'deposit_auction': 'A', 'currency': 'TOK', 'deposit_currency': 'TOK', 'chargeback': 3, 'locked': 6, 'owners': ['a', 'b'], 'owner': 'a', 'beneficiary': 'a', 'expired': True, 'topup': 8, 'confirmed': False, 'refunded': 4}, [17, 34, 51, 68, 85]), ('topup confirmed', {'cleared': 20, 'pending': 15, 'restricted': 7, 'required': 25, 'waiver': False, 'auction': 'A', 'deposit_auction': 'A', 'currency': 'TOK', 'deposit_currency': 'TOK', 'chargeback': 3, 'locked': 6, 'owners': ['a', 'b'], 'owner': 'a', 'beneficiary': 'a', 'expired': False, 'topup': 8, 'confirmed': True, 'refunded': 4}, [17, 34, 51, 68, 85]), ('all locked', {'cleared': 20, 'pending': 15, 'restricted': 7, 'required': 25, 'waiver': False, 'auction': 'A', 'deposit_auction': 'A', 'currency': 'TOK', 'deposit_currency': 'TOK', 'chargeback': 3, 'locked': 30, 'owners': ['a', 'b'], 'owner': 'a', 'beneficiary': 'a', 'expired': False, 'topup': 8, 'confirmed': False, 'refunded': 4}, [17, 34, 51, 68, 85])]
def vary(value):
if type(value) is int: return value*N
if isinstance(value,list): return [vary(v) for v in value]
if isinstance(value,dict): return {k:(v if k in ['count', 'delivery_index', 'disputed', 'maximum_set', 'minimum_set', 'stage', 'threshold', 'waived'] else vary(v)) for k,v in value.items()}
return value
for label, request, expected in fixtures:
check(label, solve(vary(request))['chargeback-recovery'], expected[N-1])
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 fixture | Actual | Expected | Outcome |
|---|---|---|---|
| normal contract | 17 | 17 | Passed |
| cleared sufficient | 17 | 17 | Passed |
| chargeback consumes balance | 0 | 0 | Passed |
| cleared sufficient / chargeback consumes balance | 0 | 0 | Passed |
| deposit waived | 17 | 17 | Passed |
| wrong auction | 17 | 17 | Passed |
| wrong denomination | 17 | 17 | Passed |
| expired deposit | 17 | 17 | Passed |
| topup confirmed | 17 | 17 | Passed |
| all locked | 17 | 17 | Passed |
SHA-256 / d7cf150218659269eba49fb25a9671da59e16ceec3fa4e323e67bed3891a07c3
Verification & scope
Stipulated toy auction rules, not a venue specification, financial advice, optimization claim, or live trading implementation. Nonnegative integer inputs and internally aligned list fields only. 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 2026-09-29T14:46:11.249035+00:00.
Case digest / daa7f7be60e6d476c1a19fb5ed02b751e755824d6e12db2dacf925287af9d690