FA-57601 / Auction allocation rules / Open access

Permit constrained award: unreserved permit quota · case 01

Concurrent award reservations double-use permit quota.

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ROOT CAUSE

Concurrent award reservations double-use permit quota.

THE FAILURE

Concurrent award reservations double-use permit quota.

Unsuccessful approach: The attempted repair uses max(0,x["quota"]-x["reserved"]); the explicit regression cases demonstrate that this still violates the stipulated auction rule.

Case contract

A toy regulated-item auction uses explicit fictional permit rules: permits are lot-category, destination and unit-count scoped; transfers consume quota only after award acceptance, and returns restore quota only after regulator acknowledgment. No real regulatory compliance is represented. Named decision unreserved-permit-quota: For unreserved permit quota, apply the stipulated decision min(x["requested"],max(0,x["quota"]-x["reserved"])).

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["category"] in x["permit_categories"]
    v1 = all(d in x["destinations"] for d in x["route"])
    v2 = min(x["requested"],x["quota"])
    v3 = max(0,x["quota"]-x["requested"]) if x["accepted"] else x["quota"]
    v4 = x["quota"]+(x["returned"] if x["return_ack"] else 0)
    v5 = x["award_time"]<x["expires"]
    v6 = x["delivery_time"]<x["expires"]
    v7 = [p for p in x["assigned"] if p in x["permits"] and p not in x["revoked"]]
    v8 = x["seller_license"] and x["buyer_license"]
    v9 = x["permit_owner"]==x["buyer"] or x["transferred"]
    return {'permit-category-scope':v0,'transit-route-permit':v1,'unreserved-permit-quota':v2,'accepted-quota-consumption':v3,'acknowledged-quota-restoration':v4,'award-time-permit-validity':v5,'delivery-permit-recheck':v6,'revoked-permit-selection':v7,'two-party-license':v8,'permit-owner-transfer':v9}
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
fixtures = [('normal contract', {'category': 'blue', 'permit_categories': ['red', 'blue'], 'destination': 'D1', 'destinations': ['D1'], 'requested': 6, 'quota': 5, 'reserved': 2, 'accepted': False, 'returned': 3, 'return_ack': False, 'expires': 8, 'award_time': 7, 'delivery_time': 9, 'permits': ['p1', 'p2'], 'revoked': ['p2'], 'assigned': ['p2'], 'seller_license': True, 'buyer_license': False, 'permit_owner': 'b', 'buyer': 'b', 'transferred': False, 'route': ['D2', 'D1']}, [3, 6, 9, 12, 15]), ('award at permit expiry', {'category': 'blue', 'permit_categories': ['red', 'blue'], 'destination': 'D1', 'destinations': ['D1'], 'requested': 6, 'quota': 5, 'reserved': 2, 'accepted': False, 'returned': 3, 'return_ack': False, 'expires': 8, 'award_time': 8, 'delivery_time': 9, 'permits': ['p1', 'p2'], 'revoked': ['p2'], 'assigned': ['p2'], 'seller_license': True, 'buyer_license': False, 'permit_owner': 'b', 'buyer': 'b', 'transferred': False, 'route': ['D2', 'D1']}, [3, 6, 9, 12, 15]), ('small request', {'category': 'blue', 'permit_categories': ['red', 'blue'], 'destination': 'D1', 'destinations': ['D1'], 'requested': 2, 'quota': 5, 'reserved': 2, 'accepted': False, 'returned': 3, 'return_ack': False, 'expires': 8, 'award_time': 7, 'delivery_time': 9, 'permits': ['p1', 'p2'], 'revoked': ['p2'], 'assigned': ['p2'], 'seller_license': True, 'buyer_license': False, 'permit_owner': 'b', 'buyer': 'b', 'transferred': False, 'route': ['D2', 'D1']}, [2, 4, 6, 8, 10]), ('award at permit expiry / small request', {'category': 'blue', 'permit_categories': ['red', 'blue'], 'destination': 'D1', 'destinations': ['D1'], 'requested': 2, 'quota': 5, 'reserved': 2, 'accepted': False, 'returned': 3, 'return_ack': False, 'expires': 8, 'award_time': 8, 'delivery_time': 9, 'permits': ['p1', 'p2'], 'revoked': ['p2'], 'assigned': ['p2'], 'seller_license': True, 'buyer_license': False, 'permit_owner': 'b', 'buyer': 'b', 'transferred': False, 'route': ['D2', 'D1']}, [2, 4, 6, 8, 10]), ('different category', {'category': 'green', 'permit_categories': ['red', 'blue'], 'destination': 'D1', 'destinations': ['D1'], 'requested': 6, 'quota': 5, 'reserved': 2, 'accepted': False, 'returned': 3, 'return_ack': False, 'expires': 8, 'award_time': 7, 'delivery_time': 9, 'permits': ['p1', 'p2'], 'revoked': ['p2'], 'assigned': ['p2'], 'seller_license': True, 'buyer_license': False, 'permit_owner': 'b', 'buyer': 'b', 'transferred': False, 'route': ['D2', 'D1']}, [3, 6, 9, 12, 15]), ('different destination', {'category': 'blue', 'permit_categories': ['red', 'blue'], 'destination': 'D2', 'destinations': ['D1'], 'requested': 6, 'quota': 5, 'reserved': 2, 'accepted': False, 'returned': 3, 'return_ack': False, 'expires': 8, 'award_time': 7, 'delivery_time': 9, 'permits': ['p1', 'p2'], 'revoked': ['p2'], 'assigned': ['p2'], 'seller_license': True, 'buyer_license': False, 'permit_owner': 'b', 'buyer': 'b', 'transferred': False, 'route': ['D2', 'D1']}, [3, 6, 9, 12, 15]), ('accepted award', {'category': 'blue', 'permit_categories': ['red', 'blue'], 'destination': 'D1', 'destinations': ['D1'], 'requested': 6, 'quota': 5, 'reserved': 2, 'accepted': True, 'returned': 3, 'return_ack': False, 'expires': 8, 'award_time': 7, 'delivery_time': 9, 'permits': ['p1', 'p2'], 'revoked': ['p2'], 'assigned': ['p2'], 'seller_license': True, 'buyer_license': False, 'permit_owner': 'b', 'buyer': 'b', 'transferred': False, 'route': ['D2', 'D1']}, [3, 6, 9, 12, 15]), ('return acknowledged', {'category': 'blue', 'permit_categories': ['red', 'blue'], 'destination': 'D1', 'destinations': ['D1'], 'requested': 6, 'quota': 5, 'reserved': 2, 'accepted': False, 'returned': 3, 'return_ack': True, 'expires': 8, 'award_time': 7, 'delivery_time': 9, 'permits': ['p1', 'p2'], 'revoked': ['p2'], 'assigned': ['p2'], 'seller_license': True, 'buyer_license': False, 'permit_owner': 'b', 'buyer': 'b', 'transferred': False, 'route': ['D2', 'D1']}, [3, 6, 9, 12, 15]), ('award after permit expiry', {'category': 'blue', 'permit_categories': ['red', 'blue'], 'destination': 'D1', 'destinations': ['D1'], 'requested': 6, 'quota': 5, 'reserved': 2, 'accepted': False, 'returned': 3, 'return_ack': False, 'expires': 8, 'award_time': 9, 'delivery_time': 9, 'permits': ['p1', 'p2'], 'revoked': ['p2'], 'assigned': ['p2'], 'seller_license': True, 'buyer_license': False, 'permit_owner': 'b', 'buyer': 'b', 'transferred': False, 'route': ['D2', 'D1']}, [3, 6, 9, 12, 15]), ('delivery before expiry', {'category': 'blue', 'permit_categories': ['red', 'blue'], 'destination': 'D1', 'destinations': ['D1'], 'requested': 6, 'quota': 5, 'reserved': 2, 'accepted': False, 'returned': 3, 'return_ack': False, 'expires': 8, 'award_time': 7, 'delivery_time': 7, 'permits': ['p1', 'p2'], 'revoked': ['p2'], 'assigned': ['p2'], 'seller_license': True, 'buyer_license': False, 'permit_owner': 'b', 'buyer': 'b', 'transferred': False, 'route': ['D2', 'D1']}, [3, 6, 9, 12, 15])]
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))['unreserved-permit-quota'], 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	`5`	`3`	Failed
award at permit expiry	`5`	`3`	Failed
small request	`2`	`2`	Passed
award at permit expiry / small request	`2`	`2`	Passed
different category	`5`	`3`	Failed
different destination	`5`	`3`	Failed
accepted award	`5`	`3`	Failed
return acknowledged	`5`	`3`	Failed
award after permit expiry	`5`	`3`	Failed
delivery before expiry	`5`	`3`	Failed

SHA-256 / 46ddb5d7447a05a3060271f75ae2ad189e2fbba2c11aed51cde963b49eea5c93

2 / The unsuccessful fix

Exit 1

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

N = 1
observations = []
def solve(x):
    v0 = x["category"] in x["permit_categories"]
    v1 = all(d in x["destinations"] for d in x["route"])
    v2 = max(0,x["quota"]-x["reserved"])
    v3 = max(0,x["quota"]-x["requested"]) if x["accepted"] else x["quota"]
    v4 = x["quota"]+(x["returned"] if x["return_ack"] else 0)
    v5 = x["award_time"]<x["expires"]
    v6 = x["delivery_time"]<x["expires"]
    v7 = [p for p in x["assigned"] if p in x["permits"] and p not in x["revoked"]]
    v8 = x["seller_license"] and x["buyer_license"]
    v9 = x["permit_owner"]==x["buyer"] or x["transferred"]
    return {'permit-category-scope':v0,'transit-route-permit':v1,'unreserved-permit-quota':v2,'accepted-quota-consumption':v3,'acknowledged-quota-restoration':v4,'award-time-permit-validity':v5,'delivery-permit-recheck':v6,'revoked-permit-selection':v7,'two-party-license':v8,'permit-owner-transfer':v9}
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
fixtures = [('normal contract', {'category': 'blue', 'permit_categories': ['red', 'blue'], 'destination': 'D1', 'destinations': ['D1'], 'requested': 6, 'quota': 5, 'reserved': 2, 'accepted': False, 'returned': 3, 'return_ack': False, 'expires': 8, 'award_time': 7, 'delivery_time': 9, 'permits': ['p1', 'p2'], 'revoked': ['p2'], 'assigned': ['p2'], 'seller_license': True, 'buyer_license': False, 'permit_owner': 'b', 'buyer': 'b', 'transferred': False, 'route': ['D2', 'D1']}, [3, 6, 9, 12, 15]), ('award at permit expiry', {'category': 'blue', 'permit_categories': ['red', 'blue'], 'destination': 'D1', 'destinations': ['D1'], 'requested': 6, 'quota': 5, 'reserved': 2, 'accepted': False, 'returned': 3, 'return_ack': False, 'expires': 8, 'award_time': 8, 'delivery_time': 9, 'permits': ['p1', 'p2'], 'revoked': ['p2'], 'assigned': ['p2'], 'seller_license': True, 'buyer_license': False, 'permit_owner': 'b', 'buyer': 'b', 'transferred': False, 'route': ['D2', 'D1']}, [3, 6, 9, 12, 15]), ('small request', {'category': 'blue', 'permit_categories': ['red', 'blue'], 'destination': 'D1', 'destinations': ['D1'], 'requested': 2, 'quota': 5, 'reserved': 2, 'accepted': False, 'returned': 3, 'return_ack': False, 'expires': 8, 'award_time': 7, 'delivery_time': 9, 'permits': ['p1', 'p2'], 'revoked': ['p2'], 'assigned': ['p2'], 'seller_license': True, 'buyer_license': False, 'permit_owner': 'b', 'buyer': 'b', 'transferred': False, 'route': ['D2', 'D1']}, [2, 4, 6, 8, 10]), ('award at permit expiry / small request', {'category': 'blue', 'permit_categories': ['red', 'blue'], 'destination': 'D1', 'destinations': ['D1'], 'requested': 2, 'quota': 5, 'reserved': 2, 'accepted': False, 'returned': 3, 'return_ack': False, 'expires': 8, 'award_time': 8, 'delivery_time': 9, 'permits': ['p1', 'p2'], 'revoked': ['p2'], 'assigned': ['p2'], 'seller_license': True, 'buyer_license': False, 'permit_owner': 'b', 'buyer': 'b', 'transferred': False, 'route': ['D2', 'D1']}, [2, 4, 6, 8, 10]), ('different category', {'category': 'green', 'permit_categories': ['red', 'blue'], 'destination': 'D1', 'destinations': ['D1'], 'requested': 6, 'quota': 5, 'reserved': 2, 'accepted': False, 'returned': 3, 'return_ack': False, 'expires': 8, 'award_time': 7, 'delivery_time': 9, 'permits': ['p1', 'p2'], 'revoked': ['p2'], 'assigned': ['p2'], 'seller_license': True, 'buyer_license': False, 'permit_owner': 'b', 'buyer': 'b', 'transferred': False, 'route': ['D2', 'D1']}, [3, 6, 9, 12, 15]), ('different destination', {'category': 'blue', 'permit_categories': ['red', 'blue'], 'destination': 'D2', 'destinations': ['D1'], 'requested': 6, 'quota': 5, 'reserved': 2, 'accepted': False, 'returned': 3, 'return_ack': False, 'expires': 8, 'award_time': 7, 'delivery_time': 9, 'permits': ['p1', 'p2'], 'revoked': ['p2'], 'assigned': ['p2'], 'seller_license': True, 'buyer_license': False, 'permit_owner': 'b', 'buyer': 'b', 'transferred': False, 'route': ['D2', 'D1']}, [3, 6, 9, 12, 15]), ('accepted award', {'category': 'blue', 'permit_categories': ['red', 'blue'], 'destination': 'D1', 'destinations': ['D1'], 'requested': 6, 'quota': 5, 'reserved': 2, 'accepted': True, 'returned': 3, 'return_ack': False, 'expires': 8, 'award_time': 7, 'delivery_time': 9, 'permits': ['p1', 'p2'], 'revoked': ['p2'], 'assigned': ['p2'], 'seller_license': True, 'buyer_license': False, 'permit_owner': 'b', 'buyer': 'b', 'transferred': False, 'route': ['D2', 'D1']}, [3, 6, 9, 12, 15]), ('return acknowledged', {'category': 'blue', 'permit_categories': ['red', 'blue'], 'destination': 'D1', 'destinations': ['D1'], 'requested': 6, 'quota': 5, 'reserved': 2, 'accepted': False, 'returned': 3, 'return_ack': True, 'expires': 8, 'award_time': 7, 'delivery_time': 9, 'permits': ['p1', 'p2'], 'revoked': ['p2'], 'assigned': ['p2'], 'seller_license': True, 'buyer_license': False, 'permit_owner': 'b', 'buyer': 'b', 'transferred': False, 'route': ['D2', 'D1']}, [3, 6, 9, 12, 15]), ('award after permit expiry', {'category': 'blue', 'permit_categories': ['red', 'blue'], 'destination': 'D1', 'destinations': ['D1'], 'requested': 6, 'quota': 5, 'reserved': 2, 'accepted': False, 'returned': 3, 'return_ack': False, 'expires': 8, 'award_time': 9, 'delivery_time': 9, 'permits': ['p1', 'p2'], 'revoked': ['p2'], 'assigned': ['p2'], 'seller_license': True, 'buyer_license': False, 'permit_owner': 'b', 'buyer': 'b', 'transferred': False, 'route': ['D2', 'D1']}, [3, 6, 9, 12, 15]), ('delivery before expiry', {'category': 'blue', 'permit_categories': ['red', 'blue'], 'destination': 'D1', 'destinations': ['D1'], 'requested': 6, 'quota': 5, 'reserved': 2, 'accepted': False, 'returned': 3, 'return_ack': False, 'expires': 8, 'award_time': 7, 'delivery_time': 7, 'permits': ['p1', 'p2'], 'revoked': ['p2'], 'assigned': ['p2'], 'seller_license': True, 'buyer_license': False, 'permit_owner': 'b', 'buyer': 'b', 'transferred': False, 'route': ['D2', 'D1']}, [3, 6, 9, 12, 15])]
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))['unreserved-permit-quota'], 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	`3`	`3`	Passed
award at permit expiry	`3`	`3`	Passed
small request	`3`	`2`	Failed
award at permit expiry / small request	`3`	`2`	Failed
different category	`3`	`3`	Passed
different destination	`3`	`3`	Passed
accepted award	`3`	`3`	Passed
return acknowledged	`3`	`3`	Passed
award after permit expiry	`3`	`3`	Passed
delivery before expiry	`3`	`3`	Passed

SHA-256 / 05ae9c0d4d69b654bf58c9c46737aec68b225d4294ddcd8aacf6ad63c41d906a

HELD IN THE MEMBER ARCHIVE

The verified repair and its recorded checks are member-only.

This mechanism has 10 recorded checks per implementation. The open-access tier publishes the failure and the unsuccessful fix; the repaired source that passes every check, and the observations that prove it, are available to members.

Every case sharing this mechanism uses the same contract and the same repair, so this one record is held back for all of them.

Member access is invitation-based. Sign in with your invited account to inspect the repair.

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 2026-09-29T14:46:18.510300+00:00.

Case digest / 403c6d56a4e89c0334efae0729a26d7be179f818df129f3e52f639df403e18da