FA-57621 / Auction allocation rules / Open access
Permit constrained award: delivery permit recheck · case 01
Delivery release relies solely on permit validity when awarded.
ROOT CAUSE
Delivery release relies solely on permit validity when awarded.
VERIFIED REPAIR
For delivery permit recheck, apply the stipulated decision x["delivery_time"]<x["expires"].
Unsuccessful approach: The attempted repair uses True; 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 delivery-permit-recheck: For delivery permit recheck, apply the stipulated decision x["delivery_time"]<x["expires"].
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"],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["award_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']}, [False, False, False, False, False]), ('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']}, [False, False, False, False, False]), ('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']}, [False, False, False, False, False]), ('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']}, [False, False, False, False, False]), ('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']}, [False, False, False, False, False]), ('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']}, [False, False, False, False, False]), ('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']}, [False, False, False, False, False]), ('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']}, [False, False, False, False, False]), ('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']}, [True, True, True, True, True])]
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))['delivery-permit-recheck'], 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 | True | False | Failed |
| different category | True | False | Failed |
| award at permit expiry | False | False | Passed |
| different destination | True | False | Failed |
| small request | True | False | Failed |
| accepted award | True | False | Failed |
| return acknowledged | True | False | Failed |
| award after permit expiry | False | False | Passed |
| delivery before expiry | True | True | Passed |
SHA-256 / 023b4451cdf4a0f2a047796b72646e23eaa0893b24ca75acd11ed5a254d7ce0d
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 = min(x["requested"],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 = True
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']}, [False, False, False, False, False]), ('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']}, [False, False, False, False, False]), ('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']}, [False, False, False, False, False]), ('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']}, [False, False, False, False, False]), ('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']}, [False, False, False, False, False]), ('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']}, [False, False, False, False, False]), ('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']}, [False, False, False, False, False]), ('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']}, [False, False, False, False, False]), ('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']}, [True, True, True, True, True])]
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))['delivery-permit-recheck'], 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 | True | False | Failed |
| different category | True | False | Failed |
| award at permit expiry | True | False | Failed |
| different destination | True | False | Failed |
| small request | True | False | Failed |
| accepted award | True | False | Failed |
| return acknowledged | True | False | Failed |
| award after permit expiry | True | False | Failed |
| delivery before expiry | True | True | Passed |
SHA-256 / 1f1c135fd0f2de77c01e3fc4633ff90fbc847ee1af4d09c6a9ff00c4e7a21156
3 / The verified repair
Exit 0"""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"],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']}, [False, False, False, False, False]), ('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']}, [False, False, False, False, False]), ('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']}, [False, False, False, False, False]), ('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']}, [False, False, False, False, False]), ('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']}, [False, False, False, False, False]), ('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']}, [False, False, False, False, False]), ('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']}, [False, False, False, False, False]), ('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']}, [False, False, False, False, False]), ('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']}, [True, True, True, True, True])]
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))['delivery-permit-recheck'], 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 | False | False | Passed |
| different category | False | False | Passed |
| award at permit expiry | False | False | Passed |
| different destination | False | False | Passed |
| small request | False | False | Passed |
| accepted award | False | False | Passed |
| return acknowledged | False | False | Passed |
| award after permit expiry | False | False | Passed |
| delivery before expiry | True | True | Passed |
SHA-256 / 963c0ca13c86557e3a0de445df2846e4d14ab5f7f0f65fee1a7b4ce3ae443574
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 2026-09-29T14:46:18.639297+00:00.
Case digest / 1ee5cbf0e7ac32f97504125c8806186aa10ca7b497f0fd81aca78160687fd8d7