FA-56786 / Auction allocation rules / Open access
Withdrawal liability: reinstatement after withdrawal · case 01
A reinstated offer still incurs withdrawal liability or a later withdrawal is masked by earlier reinstatement.
ROOT CAUSE
A reinstated offer still incurs withdrawal liability or a later withdrawal is masked by earlier reinstatement.
VERIFIED REPAIR
For reinstatement after withdrawal, apply the stipulated decision [b for b in dict.fromkeys(b for op,b in x["events"]) if [op for op,c in x["events"] if c==b][-1]=="withdraw"].
Unsuccessful approach: The attempted repair uses [b for b in dict.fromkeys(b for op,b in x["events"] if op=="withdraw") if b not in [c for op,c in x["events"] if op=="reinstate"]]; the explicit regression cases demonstrate that this still violates the stipulated auction rule.
Case contract
A toy auction withdrawal policy distinguishes voluntary withdrawal before award, excused withdrawal, replacement proceeds, paid deposits and caps on liquidated liability. Nonnegative integer credits are used; no legal or financial interpretation is intended. Named decision reinstatement-after-withdrawal: For reinstatement after withdrawal, apply the stipulated decision [b for b in dict.fromkeys(b for op,b in x["events"]) if [op for op,c in x["events"] if c==b][-1]=="withdraw"].
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 = max(0,x["bid"]-x["resale"])
v1 = 0 if x["excused"] else x["fee"]
v2 = max(0,x["bid"]-x["resale"]) if x["awarded"] else 0
v3 = 0 if x["notice"]<=x["cutoff"] else x["deposit"]
v4 = max(0,x["bid"]-x["resale"]-x["deposit"])
v5 = max(0,min(x["cap"],max(0,x["bid"]-x["resale"])+x["fee"])-x["already_paid"])
v6 = x["bond"] if x["forfeit"] and not x["released"] else 0
v7 = max(0,x["awarded_units"]-x["returned_units"])
v8 = min(x["withdrawn_units"],max(0,x["awarded_units"]-x["returned_units"]))
v9 = list(dict.fromkeys(b for op,b in x["events"] if op=="withdraw"))
return {'resale-shortfall':v0,'excused-fee-waiver':v1,'award-liability-gate':v2,'notice-penalty':v3,'deposit-offset':v4,'paid-liability-credit':v5,'released-bond-exclusion':v6,'unreturned-award-units':v7,'withdrawal-unit-cap':v8,'reinstatement-after-withdrawal':v9}
def check(label, actual, expected):
observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
fixtures = [('normal contract', {'bid': 30, 'resale': 18, 'deposit': 8, 'fee': 3, 'excused': False, 'awarded': True, 'notice': 5, 'cutoff': 4, 'already_paid': 2, 'cap': 20, 'released': False, 'withdrawn_units': 2, 'awarded_units': 5, 'returned_units': 1, 'bond': 6, 'forfeit': True, 'withdrawals': ['a', 'b', 'a'], 'events': [['withdraw', 'a'], ['reinstate', 'a'], ['withdraw', 'b']]}, [['b'], ['b'], ['b'], ['b'], ['b']]), ('notice order retained', {'bid': 30, 'resale': 18, 'deposit': 8, 'fee': 3, 'excused': False, 'awarded': True, 'notice': 5, 'cutoff': 4, 'already_paid': 2, 'cap': 20, 'released': False, 'withdrawn_units': 2, 'awarded_units': 5, 'returned_units': 1, 'bond': 6, 'forfeit': True, 'withdrawals': ['b', 'a', 'b'], 'events': [['withdraw', 'a'], ['reinstate', 'a'], ['withdraw', 'b']]}, [['b'], ['b'], ['b'], ['b'], ['b']]), ('withdraw after reinstatement', {'bid': 30, 'resale': 18, 'deposit': 8, 'fee': 3, 'excused': False, 'awarded': True, 'notice': 5, 'cutoff': 4, 'already_paid': 2, 'cap': 20, 'released': False, 'withdrawn_units': 2, 'awarded_units': 5, 'returned_units': 1, 'bond': 6, 'forfeit': True, 'withdrawals': ['a', 'b', 'a'], 'events': [['withdraw', 'a'], ['reinstate', 'a'], ['withdraw', 'a']]}, [['a'], ['a'], ['a'], ['a'], ['a']]), ('notice order retained / withdraw after reinstatement', {'bid': 30, 'resale': 18, 'deposit': 8, 'fee': 3, 'excused': False, 'awarded': True, 'notice': 5, 'cutoff': 4, 'already_paid': 2, 'cap': 20, 'released': False, 'withdrawn_units': 2, 'awarded_units': 5, 'returned_units': 1, 'bond': 6, 'forfeit': True, 'withdrawals': ['b', 'a', 'b'], 'events': [['withdraw', 'a'], ['reinstate', 'a'], ['withdraw', 'a']]}, [['a'], ['a'], ['a'], ['a'], ['a']]), ('resale surplus', {'bid': 30, 'resale': 40, 'deposit': 8, 'fee': 3, 'excused': False, 'awarded': True, 'notice': 5, 'cutoff': 4, 'already_paid': 2, 'cap': 20, 'released': False, 'withdrawn_units': 2, 'awarded_units': 5, 'returned_units': 1, 'bond': 6, 'forfeit': True, 'withdrawals': ['a', 'b', 'a'], 'events': [['withdraw', 'a'], ['reinstate', 'a'], ['withdraw', 'b']]}, [['b'], ['b'], ['b'], ['b'], ['b']]), ('excused default', {'bid': 30, 'resale': 18, 'deposit': 8, 'fee': 3, 'excused': True, 'awarded': True, 'notice': 5, 'cutoff': 4, 'already_paid': 2, 'cap': 20, 'released': False, 'withdrawn_units': 2, 'awarded_units': 5, 'returned_units': 1, 'bond': 6, 'forfeit': True, 'withdrawals': ['a', 'b', 'a'], 'events': [['withdraw', 'a'], ['reinstate', 'a'], ['withdraw', 'b']]}, [['b'], ['b'], ['b'], ['b'], ['b']]), ('before award', {'bid': 30, 'resale': 18, 'deposit': 8, 'fee': 3, 'excused': False, 'awarded': False, 'notice': 5, 'cutoff': 4, 'already_paid': 2, 'cap': 20, 'released': False, 'withdrawn_units': 2, 'awarded_units': 5, 'returned_units': 1, 'bond': 6, 'forfeit': True, 'withdrawals': ['a', 'b', 'a'], 'events': [['withdraw', 'a'], ['reinstate', 'a'], ['withdraw', 'b']]}, [['b'], ['b'], ['b'], ['b'], ['b']]), ('timely notice', {'bid': 30, 'resale': 18, 'deposit': 8, 'fee': 3, 'excused': False, 'awarded': True, 'notice': 3, 'cutoff': 4, 'already_paid': 2, 'cap': 20, 'released': False, 'withdrawn_units': 2, 'awarded_units': 5, 'returned_units': 1, 'bond': 6, 'forfeit': True, 'withdrawals': ['a', 'b', 'a'], 'events': [['withdraw', 'a'], ['reinstate', 'a'], ['withdraw', 'b']]}, [['b'], ['b'], ['b'], ['b'], ['b']]), ('exact notice cutoff', {'bid': 30, 'resale': 18, 'deposit': 8, 'fee': 3, 'excused': False, 'awarded': True, 'notice': 4, 'cutoff': 4, 'already_paid': 2, 'cap': 20, 'released': False, 'withdrawn_units': 2, 'awarded_units': 5, 'returned_units': 1, 'bond': 6, 'forfeit': True, 'withdrawals': ['a', 'b', 'a'], 'events': [['withdraw', 'a'], ['reinstate', 'a'], ['withdraw', 'b']]}, [['b'], ['b'], ['b'], ['b'], ['b']]), ('liability already paid', {'bid': 30, 'resale': 18, 'deposit': 8, 'fee': 3, 'excused': False, 'awarded': True, 'notice': 5, 'cutoff': 4, 'already_paid': 40, 'cap': 20, 'released': False, 'withdrawn_units': 2, 'awarded_units': 5, 'returned_units': 1, 'bond': 6, 'forfeit': True, 'withdrawals': ['a', 'b', 'a'], 'events': [['withdraw', 'a'], ['reinstate', 'a'], ['withdraw', 'b']]}, [['b'], ['b'], ['b'], ['b'], ['b']]), ('bond released', {'bid': 30, 'resale': 18, 'deposit': 8, 'fee': 3, 'excused': False, 'awarded': True, 'notice': 5, 'cutoff': 4, 'already_paid': 2, 'cap': 20, 'released': True, 'withdrawn_units': 2, 'awarded_units': 5, 'returned_units': 1, 'bond': 6, 'forfeit': True, 'withdrawals': ['a', 'b', 'a'], 'events': [['withdraw', 'a'], ['reinstate', 'a'], ['withdraw', 'b']]}, [['b'], ['b'], ['b'], ['b'], ['b']])]
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))['reinstatement-after-withdrawal'], 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 | ['a', 'b'] | ['b'] | Failed |
| notice order retained | ['a', 'b'] | ['b'] | Failed |
| withdraw after reinstatement | ['a'] | ['a'] | Passed |
| notice order retained / withdraw after reinstatement | ['a'] | ['a'] | Passed |
| resale surplus | ['a', 'b'] | ['b'] | Failed |
| excused default | ['a', 'b'] | ['b'] | Failed |
| before award | ['a', 'b'] | ['b'] | Failed |
| timely notice | ['a', 'b'] | ['b'] | Failed |
| exact notice cutoff | ['a', 'b'] | ['b'] | Failed |
| liability already paid | ['a', 'b'] | ['b'] | Failed |
| bond released | ['a', 'b'] | ['b'] | Failed |
SHA-256 / 6b3f6fb1ec1fd97ba5edce6e15ed7cd064ddc8cae4471488d85b2d5bdff811f4
2 / The unsuccessful fix
Exit 1"""Failure Map reference implementation. Python standard library only."""
import json
N = 1
observations = []
def solve(x):
v0 = max(0,x["bid"]-x["resale"])
v1 = 0 if x["excused"] else x["fee"]
v2 = max(0,x["bid"]-x["resale"]) if x["awarded"] else 0
v3 = 0 if x["notice"]<=x["cutoff"] else x["deposit"]
v4 = max(0,x["bid"]-x["resale"]-x["deposit"])
v5 = max(0,min(x["cap"],max(0,x["bid"]-x["resale"])+x["fee"])-x["already_paid"])
v6 = x["bond"] if x["forfeit"] and not x["released"] else 0
v7 = max(0,x["awarded_units"]-x["returned_units"])
v8 = min(x["withdrawn_units"],max(0,x["awarded_units"]-x["returned_units"]))
v9 = [b for b in dict.fromkeys(b for op,b in x["events"] if op=="withdraw") if b not in [c for op,c in x["events"] if op=="reinstate"]]
return {'resale-shortfall':v0,'excused-fee-waiver':v1,'award-liability-gate':v2,'notice-penalty':v3,'deposit-offset':v4,'paid-liability-credit':v5,'released-bond-exclusion':v6,'unreturned-award-units':v7,'withdrawal-unit-cap':v8,'reinstatement-after-withdrawal':v9}
def check(label, actual, expected):
observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
fixtures = [('normal contract', {'bid': 30, 'resale': 18, 'deposit': 8, 'fee': 3, 'excused': False, 'awarded': True, 'notice': 5, 'cutoff': 4, 'already_paid': 2, 'cap': 20, 'released': False, 'withdrawn_units': 2, 'awarded_units': 5, 'returned_units': 1, 'bond': 6, 'forfeit': True, 'withdrawals': ['a', 'b', 'a'], 'events': [['withdraw', 'a'], ['reinstate', 'a'], ['withdraw', 'b']]}, [['b'], ['b'], ['b'], ['b'], ['b']]), ('notice order retained', {'bid': 30, 'resale': 18, 'deposit': 8, 'fee': 3, 'excused': False, 'awarded': True, 'notice': 5, 'cutoff': 4, 'already_paid': 2, 'cap': 20, 'released': False, 'withdrawn_units': 2, 'awarded_units': 5, 'returned_units': 1, 'bond': 6, 'forfeit': True, 'withdrawals': ['b', 'a', 'b'], 'events': [['withdraw', 'a'], ['reinstate', 'a'], ['withdraw', 'b']]}, [['b'], ['b'], ['b'], ['b'], ['b']]), ('withdraw after reinstatement', {'bid': 30, 'resale': 18, 'deposit': 8, 'fee': 3, 'excused': False, 'awarded': True, 'notice': 5, 'cutoff': 4, 'already_paid': 2, 'cap': 20, 'released': False, 'withdrawn_units': 2, 'awarded_units': 5, 'returned_units': 1, 'bond': 6, 'forfeit': True, 'withdrawals': ['a', 'b', 'a'], 'events': [['withdraw', 'a'], ['reinstate', 'a'], ['withdraw', 'a']]}, [['a'], ['a'], ['a'], ['a'], ['a']]), ('notice order retained / withdraw after reinstatement', {'bid': 30, 'resale': 18, 'deposit': 8, 'fee': 3, 'excused': False, 'awarded': True, 'notice': 5, 'cutoff': 4, 'already_paid': 2, 'cap': 20, 'released': False, 'withdrawn_units': 2, 'awarded_units': 5, 'returned_units': 1, 'bond': 6, 'forfeit': True, 'withdrawals': ['b', 'a', 'b'], 'events': [['withdraw', 'a'], ['reinstate', 'a'], ['withdraw', 'a']]}, [['a'], ['a'], ['a'], ['a'], ['a']]), ('resale surplus', {'bid': 30, 'resale': 40, 'deposit': 8, 'fee': 3, 'excused': False, 'awarded': True, 'notice': 5, 'cutoff': 4, 'already_paid': 2, 'cap': 20, 'released': False, 'withdrawn_units': 2, 'awarded_units': 5, 'returned_units': 1, 'bond': 6, 'forfeit': True, 'withdrawals': ['a', 'b', 'a'], 'events': [['withdraw', 'a'], ['reinstate', 'a'], ['withdraw', 'b']]}, [['b'], ['b'], ['b'], ['b'], ['b']]), ('excused default', {'bid': 30, 'resale': 18, 'deposit': 8, 'fee': 3, 'excused': True, 'awarded': True, 'notice': 5, 'cutoff': 4, 'already_paid': 2, 'cap': 20, 'released': False, 'withdrawn_units': 2, 'awarded_units': 5, 'returned_units': 1, 'bond': 6, 'forfeit': True, 'withdrawals': ['a', 'b', 'a'], 'events': [['withdraw', 'a'], ['reinstate', 'a'], ['withdraw', 'b']]}, [['b'], ['b'], ['b'], ['b'], ['b']]), ('before award', {'bid': 30, 'resale': 18, 'deposit': 8, 'fee': 3, 'excused': False, 'awarded': False, 'notice': 5, 'cutoff': 4, 'already_paid': 2, 'cap': 20, 'released': False, 'withdrawn_units': 2, 'awarded_units': 5, 'returned_units': 1, 'bond': 6, 'forfeit': True, 'withdrawals': ['a', 'b', 'a'], 'events': [['withdraw', 'a'], ['reinstate', 'a'], ['withdraw', 'b']]}, [['b'], ['b'], ['b'], ['b'], ['b']]), ('timely notice', {'bid': 30, 'resale': 18, 'deposit': 8, 'fee': 3, 'excused': False, 'awarded': True, 'notice': 3, 'cutoff': 4, 'already_paid': 2, 'cap': 20, 'released': False, 'withdrawn_units': 2, 'awarded_units': 5, 'returned_units': 1, 'bond': 6, 'forfeit': True, 'withdrawals': ['a', 'b', 'a'], 'events': [['withdraw', 'a'], ['reinstate', 'a'], ['withdraw', 'b']]}, [['b'], ['b'], ['b'], ['b'], ['b']]), ('exact notice cutoff', {'bid': 30, 'resale': 18, 'deposit': 8, 'fee': 3, 'excused': False, 'awarded': True, 'notice': 4, 'cutoff': 4, 'already_paid': 2, 'cap': 20, 'released': False, 'withdrawn_units': 2, 'awarded_units': 5, 'returned_units': 1, 'bond': 6, 'forfeit': True, 'withdrawals': ['a', 'b', 'a'], 'events': [['withdraw', 'a'], ['reinstate', 'a'], ['withdraw', 'b']]}, [['b'], ['b'], ['b'], ['b'], ['b']]), ('liability already paid', {'bid': 30, 'resale': 18, 'deposit': 8, 'fee': 3, 'excused': False, 'awarded': True, 'notice': 5, 'cutoff': 4, 'already_paid': 40, 'cap': 20, 'released': False, 'withdrawn_units': 2, 'awarded_units': 5, 'returned_units': 1, 'bond': 6, 'forfeit': True, 'withdrawals': ['a', 'b', 'a'], 'events': [['withdraw', 'a'], ['reinstate', 'a'], ['withdraw', 'b']]}, [['b'], ['b'], ['b'], ['b'], ['b']]), ('bond released', {'bid': 30, 'resale': 18, 'deposit': 8, 'fee': 3, 'excused': False, 'awarded': True, 'notice': 5, 'cutoff': 4, 'already_paid': 2, 'cap': 20, 'released': True, 'withdrawn_units': 2, 'awarded_units': 5, 'returned_units': 1, 'bond': 6, 'forfeit': True, 'withdrawals': ['a', 'b', 'a'], 'events': [['withdraw', 'a'], ['reinstate', 'a'], ['withdraw', 'b']]}, [['b'], ['b'], ['b'], ['b'], ['b']])]
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))['reinstatement-after-withdrawal'], 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 | ['b'] | ['b'] | Passed |
| notice order retained | ['b'] | ['b'] | Passed |
| withdraw after reinstatement | [] | ['a'] | Failed |
| notice order retained / withdraw after reinstatement | [] | ['a'] | Failed |
| resale surplus | ['b'] | ['b'] | Passed |
| excused default | ['b'] | ['b'] | Passed |
| before award | ['b'] | ['b'] | Passed |
| timely notice | ['b'] | ['b'] | Passed |
| exact notice cutoff | ['b'] | ['b'] | Passed |
| liability already paid | ['b'] | ['b'] | Passed |
| bond released | ['b'] | ['b'] | Passed |
SHA-256 / 4de837eac2699657330467de9e35ed3ad5c9170871d73e1fc02f2cd1812a3a2a
3 / The verified repair
Exit 0"""Failure Map reference implementation. Python standard library only."""
import json
N = 1
observations = []
def solve(x):
v0 = max(0,x["bid"]-x["resale"])
v1 = 0 if x["excused"] else x["fee"]
v2 = max(0,x["bid"]-x["resale"]) if x["awarded"] else 0
v3 = 0 if x["notice"]<=x["cutoff"] else x["deposit"]
v4 = max(0,x["bid"]-x["resale"]-x["deposit"])
v5 = max(0,min(x["cap"],max(0,x["bid"]-x["resale"])+x["fee"])-x["already_paid"])
v6 = x["bond"] if x["forfeit"] and not x["released"] else 0
v7 = max(0,x["awarded_units"]-x["returned_units"])
v8 = min(x["withdrawn_units"],max(0,x["awarded_units"]-x["returned_units"]))
v9 = [b for b in dict.fromkeys(b for op,b in x["events"]) if [op for op,c in x["events"] if c==b][-1]=="withdraw"]
return {'resale-shortfall':v0,'excused-fee-waiver':v1,'award-liability-gate':v2,'notice-penalty':v3,'deposit-offset':v4,'paid-liability-credit':v5,'released-bond-exclusion':v6,'unreturned-award-units':v7,'withdrawal-unit-cap':v8,'reinstatement-after-withdrawal':v9}
def check(label, actual, expected):
observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
fixtures = [('normal contract', {'bid': 30, 'resale': 18, 'deposit': 8, 'fee': 3, 'excused': False, 'awarded': True, 'notice': 5, 'cutoff': 4, 'already_paid': 2, 'cap': 20, 'released': False, 'withdrawn_units': 2, 'awarded_units': 5, 'returned_units': 1, 'bond': 6, 'forfeit': True, 'withdrawals': ['a', 'b', 'a'], 'events': [['withdraw', 'a'], ['reinstate', 'a'], ['withdraw', 'b']]}, [['b'], ['b'], ['b'], ['b'], ['b']]), ('notice order retained', {'bid': 30, 'resale': 18, 'deposit': 8, 'fee': 3, 'excused': False, 'awarded': True, 'notice': 5, 'cutoff': 4, 'already_paid': 2, 'cap': 20, 'released': False, 'withdrawn_units': 2, 'awarded_units': 5, 'returned_units': 1, 'bond': 6, 'forfeit': True, 'withdrawals': ['b', 'a', 'b'], 'events': [['withdraw', 'a'], ['reinstate', 'a'], ['withdraw', 'b']]}, [['b'], ['b'], ['b'], ['b'], ['b']]), ('withdraw after reinstatement', {'bid': 30, 'resale': 18, 'deposit': 8, 'fee': 3, 'excused': False, 'awarded': True, 'notice': 5, 'cutoff': 4, 'already_paid': 2, 'cap': 20, 'released': False, 'withdrawn_units': 2, 'awarded_units': 5, 'returned_units': 1, 'bond': 6, 'forfeit': True, 'withdrawals': ['a', 'b', 'a'], 'events': [['withdraw', 'a'], ['reinstate', 'a'], ['withdraw', 'a']]}, [['a'], ['a'], ['a'], ['a'], ['a']]), ('notice order retained / withdraw after reinstatement', {'bid': 30, 'resale': 18, 'deposit': 8, 'fee': 3, 'excused': False, 'awarded': True, 'notice': 5, 'cutoff': 4, 'already_paid': 2, 'cap': 20, 'released': False, 'withdrawn_units': 2, 'awarded_units': 5, 'returned_units': 1, 'bond': 6, 'forfeit': True, 'withdrawals': ['b', 'a', 'b'], 'events': [['withdraw', 'a'], ['reinstate', 'a'], ['withdraw', 'a']]}, [['a'], ['a'], ['a'], ['a'], ['a']]), ('resale surplus', {'bid': 30, 'resale': 40, 'deposit': 8, 'fee': 3, 'excused': False, 'awarded': True, 'notice': 5, 'cutoff': 4, 'already_paid': 2, 'cap': 20, 'released': False, 'withdrawn_units': 2, 'awarded_units': 5, 'returned_units': 1, 'bond': 6, 'forfeit': True, 'withdrawals': ['a', 'b', 'a'], 'events': [['withdraw', 'a'], ['reinstate', 'a'], ['withdraw', 'b']]}, [['b'], ['b'], ['b'], ['b'], ['b']]), ('excused default', {'bid': 30, 'resale': 18, 'deposit': 8, 'fee': 3, 'excused': True, 'awarded': True, 'notice': 5, 'cutoff': 4, 'already_paid': 2, 'cap': 20, 'released': False, 'withdrawn_units': 2, 'awarded_units': 5, 'returned_units': 1, 'bond': 6, 'forfeit': True, 'withdrawals': ['a', 'b', 'a'], 'events': [['withdraw', 'a'], ['reinstate', 'a'], ['withdraw', 'b']]}, [['b'], ['b'], ['b'], ['b'], ['b']]), ('before award', {'bid': 30, 'resale': 18, 'deposit': 8, 'fee': 3, 'excused': False, 'awarded': False, 'notice': 5, 'cutoff': 4, 'already_paid': 2, 'cap': 20, 'released': False, 'withdrawn_units': 2, 'awarded_units': 5, 'returned_units': 1, 'bond': 6, 'forfeit': True, 'withdrawals': ['a', 'b', 'a'], 'events': [['withdraw', 'a'], ['reinstate', 'a'], ['withdraw', 'b']]}, [['b'], ['b'], ['b'], ['b'], ['b']]), ('timely notice', {'bid': 30, 'resale': 18, 'deposit': 8, 'fee': 3, 'excused': False, 'awarded': True, 'notice': 3, 'cutoff': 4, 'already_paid': 2, 'cap': 20, 'released': False, 'withdrawn_units': 2, 'awarded_units': 5, 'returned_units': 1, 'bond': 6, 'forfeit': True, 'withdrawals': ['a', 'b', 'a'], 'events': [['withdraw', 'a'], ['reinstate', 'a'], ['withdraw', 'b']]}, [['b'], ['b'], ['b'], ['b'], ['b']]), ('exact notice cutoff', {'bid': 30, 'resale': 18, 'deposit': 8, 'fee': 3, 'excused': False, 'awarded': True, 'notice': 4, 'cutoff': 4, 'already_paid': 2, 'cap': 20, 'released': False, 'withdrawn_units': 2, 'awarded_units': 5, 'returned_units': 1, 'bond': 6, 'forfeit': True, 'withdrawals': ['a', 'b', 'a'], 'events': [['withdraw', 'a'], ['reinstate', 'a'], ['withdraw', 'b']]}, [['b'], ['b'], ['b'], ['b'], ['b']]), ('liability already paid', {'bid': 30, 'resale': 18, 'deposit': 8, 'fee': 3, 'excused': False, 'awarded': True, 'notice': 5, 'cutoff': 4, 'already_paid': 40, 'cap': 20, 'released': False, 'withdrawn_units': 2, 'awarded_units': 5, 'returned_units': 1, 'bond': 6, 'forfeit': True, 'withdrawals': ['a', 'b', 'a'], 'events': [['withdraw', 'a'], ['reinstate', 'a'], ['withdraw', 'b']]}, [['b'], ['b'], ['b'], ['b'], ['b']]), ('bond released', {'bid': 30, 'resale': 18, 'deposit': 8, 'fee': 3, 'excused': False, 'awarded': True, 'notice': 5, 'cutoff': 4, 'already_paid': 2, 'cap': 20, 'released': True, 'withdrawn_units': 2, 'awarded_units': 5, 'returned_units': 1, 'bond': 6, 'forfeit': True, 'withdrawals': ['a', 'b', 'a'], 'events': [['withdraw', 'a'], ['reinstate', 'a'], ['withdraw', 'b']]}, [['b'], ['b'], ['b'], ['b'], ['b']])]
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))['reinstatement-after-withdrawal'], 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 | ['b'] | ['b'] | Passed |
| notice order retained | ['b'] | ['b'] | Passed |
| withdraw after reinstatement | ['a'] | ['a'] | Passed |
| notice order retained / withdraw after reinstatement | ['a'] | ['a'] | Passed |
| resale surplus | ['b'] | ['b'] | Passed |
| excused default | ['b'] | ['b'] | Passed |
| before award | ['b'] | ['b'] | Passed |
| timely notice | ['b'] | ['b'] | Passed |
| exact notice cutoff | ['b'] | ['b'] | Passed |
| liability already paid | ['b'] | ['b'] | Passed |
| bond released | ['b'] | ['b'] | Passed |
SHA-256 / 00f47fdb925f9e0d551e83d8bebc41e1bf9d9ea7d52b4f1b4671df7318d2bcbe
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 2026-09-29T14:46:10.345575+00:00.
Case digest / 07df1d1b4d7cb0a4af597bdac32179b7ed278d2f993a63c9cac05fd58de57ebd