FA-56801 / Auction allocation rules / Open access

Award forfeiture: alternate offer expiry · case 01

Alternate acceptance uses the original bidder deadline.

Verified by executionVariant 1 · 10 checks per implementationDownload source bundle ↓JSON ↗

ROOT CAUSE

Alternate acceptance uses the original bidder deadline.

VERIFIED REPAIR

For alternate offer expiry, apply the stipulated decision x["now"]<x["offer_until"].

Unsuccessful approach: The attempted repair uses x["now"]<=x["offer_until"]; the explicit regression cases demonstrate that this still violates the stipulated auction rule.

Case contract

A defaulted provisional auction award may be offered to a prequalified alternate. Alternate acceptance has its own deadline; original payment, delivery and forfeiture states remain separate. This model reports dispositions without recomputing bid rankings. Named decision alternate-offer-expiry: For alternate offer expiry, apply the stipulated decision x["now"]<x["offer_until"].

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["defaulted"] and not x["paid"]
    v1 = not x["delivered"] or x["lot_returned"]
    v2 = x["now"]<x["original_until"]
    v3 = x["alternate"] in x["qualified"] and x["alternate"] not in x["banned"]
    v4 = x["accepted"] and x["consent"]
    v5 = min(x["escrow"],x["penalty"])
    v6 = max(0,x["escrow"]-x["penalty"])
    v7 = x["alternate"] if x["accepted"] and x["consent"] else x["original_owner"]
    v8 = next((a for a in x["offers"] if a not in x["declined"]),None)
    v9 = x["new_payment"] if x["accepted"] else 0
    return {'default-resale-eligibility':v0,'delivery-recovery':v1,'alternate-offer-expiry':v2,'alternate-disqualification':v3,'affirmative-alternate-consent':v4,'escrow-forfeit-ceiling':v5,'escrow-residue':v6,'ownership-transfer-gate':v7,'declined-alternate-skip':v8,'resale-payment-recognition':v9}
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
fixtures = [('normal contract', {'defaulted': True, 'paid': False, 'delivered': False, 'accepted': False, 'now': 7, 'offer_until': 8, 'original_until': 5, 'alternate': 'b', 'banned': ['a'], 'qualified': ['b', 'c'], 'consent': True, 'lot_returned': False, 'escrow': 12, 'penalty': 4, 'new_payment': 9, 'original_owner': 'a', 'offers': ['b', 'c'], 'declined': ['b']}, [True, True, True, True, True]), ('original paid', {'defaulted': True, 'paid': True, 'delivered': False, 'accepted': False, 'now': 7, 'offer_until': 8, 'original_until': 5, 'alternate': 'b', 'banned': ['a'], 'qualified': ['b', 'c'], 'consent': True, 'lot_returned': False, 'escrow': 12, 'penalty': 4, 'new_payment': 9, 'original_owner': 'a', 'offers': ['b', 'c'], 'declined': ['b']}, [True, True, True, True, True]), ('exact offer deadline', {'defaulted': True, 'paid': False, 'delivered': False, 'accepted': False, 'now': 8, 'offer_until': 8, 'original_until': 5, 'alternate': 'b', 'banned': ['a'], 'qualified': ['b', 'c'], 'consent': True, 'lot_returned': False, 'escrow': 12, 'penalty': 4, 'new_payment': 9, 'original_owner': 'a', 'offers': ['b', 'c'], 'declined': ['b']}, [False, False, False, False, False]), ('original paid / exact offer deadline', {'defaulted': True, 'paid': True, 'delivered': False, 'accepted': False, 'now': 8, 'offer_until': 8, 'original_until': 5, 'alternate': 'b', 'banned': ['a'], 'qualified': ['b', 'c'], 'consent': True, 'lot_returned': False, 'escrow': 12, 'penalty': 4, 'new_payment': 9, 'original_owner': 'a', 'offers': ['b', 'c'], 'declined': ['b']}, [False, False, False, False, False]), ('delivered original', {'defaulted': True, 'paid': False, 'delivered': True, 'accepted': False, 'now': 7, 'offer_until': 8, 'original_until': 5, 'alternate': 'b', 'banned': ['a'], 'qualified': ['b', 'c'], 'consent': True, 'lot_returned': False, 'escrow': 12, 'penalty': 4, 'new_payment': 9, 'original_owner': 'a', 'offers': ['b', 'c'], 'declined': ['b']}, [True, True, True, True, True]), ('no default', {'defaulted': False, 'paid': False, 'delivered': False, 'accepted': False, 'now': 7, 'offer_until': 8, 'original_until': 5, 'alternate': 'b', 'banned': ['a'], 'qualified': ['b', 'c'], 'consent': True, 'lot_returned': False, 'escrow': 12, 'penalty': 4, 'new_payment': 9, 'original_owner': 'a', 'offers': ['b', 'c'], 'declined': ['b']}, [True, True, True, True, True]), ('alternate accepted', {'defaulted': True, 'paid': False, 'delivered': False, 'accepted': True, 'now': 7, 'offer_until': 8, 'original_until': 5, 'alternate': 'b', 'banned': ['a'], 'qualified': ['b', 'c'], 'consent': True, 'lot_returned': False, 'escrow': 12, 'penalty': 4, 'new_payment': 9, 'original_owner': 'a', 'offers': ['b', 'c'], 'declined': ['b']}, [True, True, True, True, True]), ('offer expired', {'defaulted': True, 'paid': False, 'delivered': False, 'accepted': False, 'now': 9, 'offer_until': 8, 'original_until': 5, 'alternate': 'b', 'banned': ['a'], 'qualified': ['b', 'c'], 'consent': True, 'lot_returned': False, 'escrow': 12, 'penalty': 4, 'new_payment': 9, 'original_owner': 'a', 'offers': ['b', 'c'], 'declined': ['b']}, [False, False, False, False, False]), ('alternate banned', {'defaulted': True, 'paid': False, 'delivered': False, 'accepted': False, 'now': 7, 'offer_until': 8, 'original_until': 5, 'alternate': 'b', 'banned': ['b'], 'qualified': ['b', 'c'], 'consent': True, 'lot_returned': False, 'escrow': 12, 'penalty': 4, 'new_payment': 9, 'original_owner': 'a', 'offers': ['b', 'c'], 'declined': ['b']}, [True, True, True, True, True]), ('unqualified alternate', {'defaulted': True, 'paid': False, 'delivered': False, 'accepted': False, 'now': 7, 'offer_until': 8, 'original_until': 5, 'alternate': 'b', 'banned': ['a'], 'qualified': [], 'consent': True, 'lot_returned': False, 'escrow': 12, 'penalty': 4, 'new_payment': 9, 'original_owner': 'a', 'offers': ['b', 'c'], 'declined': ['b']}, [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))['alternate-offer-expiry'], 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`	`True`	Failed
original paid	`False`	`True`	Failed
exact offer deadline	`False`	`False`	Passed
original paid / exact offer deadline	`False`	`False`	Passed
delivered original	`False`	`True`	Failed
no default	`False`	`True`	Failed
alternate accepted	`False`	`True`	Failed
offer expired	`False`	`False`	Passed
alternate banned	`False`	`True`	Failed
unqualified alternate	`False`	`True`	Failed

SHA-256 / 2271a02105770b5b465183c19ded030941a7d2c94af8578ff8ebf2ced09c4d6c

2 / The unsuccessful fix

Exit 1

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

N = 1
observations = []
def solve(x):
    v0 = x["defaulted"] and not x["paid"]
    v1 = not x["delivered"] or x["lot_returned"]
    v2 = x["now"]<=x["offer_until"]
    v3 = x["alternate"] in x["qualified"] and x["alternate"] not in x["banned"]
    v4 = x["accepted"] and x["consent"]
    v5 = min(x["escrow"],x["penalty"])
    v6 = max(0,x["escrow"]-x["penalty"])
    v7 = x["alternate"] if x["accepted"] and x["consent"] else x["original_owner"]
    v8 = next((a for a in x["offers"] if a not in x["declined"]),None)
    v9 = x["new_payment"] if x["accepted"] else 0
    return {'default-resale-eligibility':v0,'delivery-recovery':v1,'alternate-offer-expiry':v2,'alternate-disqualification':v3,'affirmative-alternate-consent':v4,'escrow-forfeit-ceiling':v5,'escrow-residue':v6,'ownership-transfer-gate':v7,'declined-alternate-skip':v8,'resale-payment-recognition':v9}
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
fixtures = [('normal contract', {'defaulted': True, 'paid': False, 'delivered': False, 'accepted': False, 'now': 7, 'offer_until': 8, 'original_until': 5, 'alternate': 'b', 'banned': ['a'], 'qualified': ['b', 'c'], 'consent': True, 'lot_returned': False, 'escrow': 12, 'penalty': 4, 'new_payment': 9, 'original_owner': 'a', 'offers': ['b', 'c'], 'declined': ['b']}, [True, True, True, True, True]), ('original paid', {'defaulted': True, 'paid': True, 'delivered': False, 'accepted': False, 'now': 7, 'offer_until': 8, 'original_until': 5, 'alternate': 'b', 'banned': ['a'], 'qualified': ['b', 'c'], 'consent': True, 'lot_returned': False, 'escrow': 12, 'penalty': 4, 'new_payment': 9, 'original_owner': 'a', 'offers': ['b', 'c'], 'declined': ['b']}, [True, True, True, True, True]), ('exact offer deadline', {'defaulted': True, 'paid': False, 'delivered': False, 'accepted': False, 'now': 8, 'offer_until': 8, 'original_until': 5, 'alternate': 'b', 'banned': ['a'], 'qualified': ['b', 'c'], 'consent': True, 'lot_returned': False, 'escrow': 12, 'penalty': 4, 'new_payment': 9, 'original_owner': 'a', 'offers': ['b', 'c'], 'declined': ['b']}, [False, False, False, False, False]), ('original paid / exact offer deadline', {'defaulted': True, 'paid': True, 'delivered': False, 'accepted': False, 'now': 8, 'offer_until': 8, 'original_until': 5, 'alternate': 'b', 'banned': ['a'], 'qualified': ['b', 'c'], 'consent': True, 'lot_returned': False, 'escrow': 12, 'penalty': 4, 'new_payment': 9, 'original_owner': 'a', 'offers': ['b', 'c'], 'declined': ['b']}, [False, False, False, False, False]), ('delivered original', {'defaulted': True, 'paid': False, 'delivered': True, 'accepted': False, 'now': 7, 'offer_until': 8, 'original_until': 5, 'alternate': 'b', 'banned': ['a'], 'qualified': ['b', 'c'], 'consent': True, 'lot_returned': False, 'escrow': 12, 'penalty': 4, 'new_payment': 9, 'original_owner': 'a', 'offers': ['b', 'c'], 'declined': ['b']}, [True, True, True, True, True]), ('no default', {'defaulted': False, 'paid': False, 'delivered': False, 'accepted': False, 'now': 7, 'offer_until': 8, 'original_until': 5, 'alternate': 'b', 'banned': ['a'], 'qualified': ['b', 'c'], 'consent': True, 'lot_returned': False, 'escrow': 12, 'penalty': 4, 'new_payment': 9, 'original_owner': 'a', 'offers': ['b', 'c'], 'declined': ['b']}, [True, True, True, True, True]), ('alternate accepted', {'defaulted': True, 'paid': False, 'delivered': False, 'accepted': True, 'now': 7, 'offer_until': 8, 'original_until': 5, 'alternate': 'b', 'banned': ['a'], 'qualified': ['b', 'c'], 'consent': True, 'lot_returned': False, 'escrow': 12, 'penalty': 4, 'new_payment': 9, 'original_owner': 'a', 'offers': ['b', 'c'], 'declined': ['b']}, [True, True, True, True, True]), ('offer expired', {'defaulted': True, 'paid': False, 'delivered': False, 'accepted': False, 'now': 9, 'offer_until': 8, 'original_until': 5, 'alternate': 'b', 'banned': ['a'], 'qualified': ['b', 'c'], 'consent': True, 'lot_returned': False, 'escrow': 12, 'penalty': 4, 'new_payment': 9, 'original_owner': 'a', 'offers': ['b', 'c'], 'declined': ['b']}, [False, False, False, False, False]), ('alternate banned', {'defaulted': True, 'paid': False, 'delivered': False, 'accepted': False, 'now': 7, 'offer_until': 8, 'original_until': 5, 'alternate': 'b', 'banned': ['b'], 'qualified': ['b', 'c'], 'consent': True, 'lot_returned': False, 'escrow': 12, 'penalty': 4, 'new_payment': 9, 'original_owner': 'a', 'offers': ['b', 'c'], 'declined': ['b']}, [True, True, True, True, True]), ('unqualified alternate', {'defaulted': True, 'paid': False, 'delivered': False, 'accepted': False, 'now': 7, 'offer_until': 8, 'original_until': 5, 'alternate': 'b', 'banned': ['a'], 'qualified': [], 'consent': True, 'lot_returned': False, 'escrow': 12, 'penalty': 4, 'new_payment': 9, 'original_owner': 'a', 'offers': ['b', 'c'], 'declined': ['b']}, [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))['alternate-offer-expiry'], 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`	`True`	Passed
original paid	`True`	`True`	Passed
exact offer deadline	`True`	`False`	Failed
original paid / exact offer deadline	`True`	`False`	Failed
delivered original	`True`	`True`	Passed
no default	`True`	`True`	Passed
alternate accepted	`True`	`True`	Passed
offer expired	`False`	`False`	Passed
alternate banned	`True`	`True`	Passed
unqualified alternate	`True`	`True`	Passed

SHA-256 / 098bc860ee632efd648e324fbea9b0c1e21afe6070339420bd3e56f995f72ce0

3 / The verified repair

Exit 0

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

N = 1
observations = []
def solve(x):
    v0 = x["defaulted"] and not x["paid"]
    v1 = not x["delivered"] or x["lot_returned"]
    v2 = x["now"]<x["offer_until"]
    v3 = x["alternate"] in x["qualified"] and x["alternate"] not in x["banned"]
    v4 = x["accepted"] and x["consent"]
    v5 = min(x["escrow"],x["penalty"])
    v6 = max(0,x["escrow"]-x["penalty"])
    v7 = x["alternate"] if x["accepted"] and x["consent"] else x["original_owner"]
    v8 = next((a for a in x["offers"] if a not in x["declined"]),None)
    v9 = x["new_payment"] if x["accepted"] else 0
    return {'default-resale-eligibility':v0,'delivery-recovery':v1,'alternate-offer-expiry':v2,'alternate-disqualification':v3,'affirmative-alternate-consent':v4,'escrow-forfeit-ceiling':v5,'escrow-residue':v6,'ownership-transfer-gate':v7,'declined-alternate-skip':v8,'resale-payment-recognition':v9}
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
fixtures = [('normal contract', {'defaulted': True, 'paid': False, 'delivered': False, 'accepted': False, 'now': 7, 'offer_until': 8, 'original_until': 5, 'alternate': 'b', 'banned': ['a'], 'qualified': ['b', 'c'], 'consent': True, 'lot_returned': False, 'escrow': 12, 'penalty': 4, 'new_payment': 9, 'original_owner': 'a', 'offers': ['b', 'c'], 'declined': ['b']}, [True, True, True, True, True]), ('original paid', {'defaulted': True, 'paid': True, 'delivered': False, 'accepted': False, 'now': 7, 'offer_until': 8, 'original_until': 5, 'alternate': 'b', 'banned': ['a'], 'qualified': ['b', 'c'], 'consent': True, 'lot_returned': False, 'escrow': 12, 'penalty': 4, 'new_payment': 9, 'original_owner': 'a', 'offers': ['b', 'c'], 'declined': ['b']}, [True, True, True, True, True]), ('exact offer deadline', {'defaulted': True, 'paid': False, 'delivered': False, 'accepted': False, 'now': 8, 'offer_until': 8, 'original_until': 5, 'alternate': 'b', 'banned': ['a'], 'qualified': ['b', 'c'], 'consent': True, 'lot_returned': False, 'escrow': 12, 'penalty': 4, 'new_payment': 9, 'original_owner': 'a', 'offers': ['b', 'c'], 'declined': ['b']}, [False, False, False, False, False]), ('original paid / exact offer deadline', {'defaulted': True, 'paid': True, 'delivered': False, 'accepted': False, 'now': 8, 'offer_until': 8, 'original_until': 5, 'alternate': 'b', 'banned': ['a'], 'qualified': ['b', 'c'], 'consent': True, 'lot_returned': False, 'escrow': 12, 'penalty': 4, 'new_payment': 9, 'original_owner': 'a', 'offers': ['b', 'c'], 'declined': ['b']}, [False, False, False, False, False]), ('delivered original', {'defaulted': True, 'paid': False, 'delivered': True, 'accepted': False, 'now': 7, 'offer_until': 8, 'original_until': 5, 'alternate': 'b', 'banned': ['a'], 'qualified': ['b', 'c'], 'consent': True, 'lot_returned': False, 'escrow': 12, 'penalty': 4, 'new_payment': 9, 'original_owner': 'a', 'offers': ['b', 'c'], 'declined': ['b']}, [True, True, True, True, True]), ('no default', {'defaulted': False, 'paid': False, 'delivered': False, 'accepted': False, 'now': 7, 'offer_until': 8, 'original_until': 5, 'alternate': 'b', 'banned': ['a'], 'qualified': ['b', 'c'], 'consent': True, 'lot_returned': False, 'escrow': 12, 'penalty': 4, 'new_payment': 9, 'original_owner': 'a', 'offers': ['b', 'c'], 'declined': ['b']}, [True, True, True, True, True]), ('alternate accepted', {'defaulted': True, 'paid': False, 'delivered': False, 'accepted': True, 'now': 7, 'offer_until': 8, 'original_until': 5, 'alternate': 'b', 'banned': ['a'], 'qualified': ['b', 'c'], 'consent': True, 'lot_returned': False, 'escrow': 12, 'penalty': 4, 'new_payment': 9, 'original_owner': 'a', 'offers': ['b', 'c'], 'declined': ['b']}, [True, True, True, True, True]), ('offer expired', {'defaulted': True, 'paid': False, 'delivered': False, 'accepted': False, 'now': 9, 'offer_until': 8, 'original_until': 5, 'alternate': 'b', 'banned': ['a'], 'qualified': ['b', 'c'], 'consent': True, 'lot_returned': False, 'escrow': 12, 'penalty': 4, 'new_payment': 9, 'original_owner': 'a', 'offers': ['b', 'c'], 'declined': ['b']}, [False, False, False, False, False]), ('alternate banned', {'defaulted': True, 'paid': False, 'delivered': False, 'accepted': False, 'now': 7, 'offer_until': 8, 'original_until': 5, 'alternate': 'b', 'banned': ['b'], 'qualified': ['b', 'c'], 'consent': True, 'lot_returned': False, 'escrow': 12, 'penalty': 4, 'new_payment': 9, 'original_owner': 'a', 'offers': ['b', 'c'], 'declined': ['b']}, [True, True, True, True, True]), ('unqualified alternate', {'defaulted': True, 'paid': False, 'delivered': False, 'accepted': False, 'now': 7, 'offer_until': 8, 'original_until': 5, 'alternate': 'b', 'banned': ['a'], 'qualified': [], 'consent': True, 'lot_returned': False, 'escrow': 12, 'penalty': 4, 'new_payment': 9, 'original_owner': 'a', 'offers': ['b', 'c'], 'declined': ['b']}, [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))['alternate-offer-expiry'], 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`	`True`	Passed
original paid	`True`	`True`	Passed
exact offer deadline	`False`	`False`	Passed
original paid / exact offer deadline	`False`	`False`	Passed
delivered original	`True`	`True`	Passed
no default	`True`	`True`	Passed
alternate accepted	`True`	`True`	Passed
offer expired	`False`	`False`	Passed
alternate banned	`True`	`True`	Passed
unqualified alternate	`True`	`True`	Passed

SHA-256 / 9acf39d2b841d48cf7e8348eb01cd995081a45cdab8dab505daf65e512eb8a1b

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 2026-09-29T14:46:10.584635+00:00.

Case digest / 544874d084be11f9dad18174cc2a36aa682d98a56dd4f1b64d6fbc8174ea26f8