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FA-56661 / Auction allocation rules / Open access

Proxy instructions: one trigger submission · case 01

One-use proxy trigger creates repeated auction offers.

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

ROOT CAUSE

One-use proxy trigger creates repeated auction offers.

VERIFIED REPAIR

For one trigger submission, apply the stipulated decision [] if x["token"]==x["last_token"] else [x["lot"]].

Unsuccessful approach: The attempted repair uses []; the explicit regression cases demonstrate that this still violates the stipulated auction rule.

Case contract

A bidder authorizes a bounded proxy to submit offers for a specific lot. A proxy instruction specifies a price ceiling, per-step increment, remaining quantity, owner consent and a one-use trigger token. Outputs are actionable submissions, not an optimal bidding strategy. Named decision one-trigger-submission: For one trigger submission, apply the stipulated decision [] if x["token"]==x["last_token"] else [x["lot"]].

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 = min(x["ceiling"],x["current"]+x["increment"])
    v1 = x["current"]<x["ceiling"] and x["increment"]>0
    v2 = max(0,x["quantity"]-x["filled"])
    v3 = x["enabled"] and not x["owner_present"]
    v4 = [x["lot"]]
    v5 = x["lot"] in x["authorized_lots"]
    v6 = x["enabled"] and not x["suspended"]
    v7 = x["manual_price"] if x["manual_active"] else x["current"]
    v8 = min(max(0,x["quantity"]-x["filled"]),x["credit"]//max(1,x["unit_hold"]))
    v9 = [t for t in x["triggers"] if t in x["allowed"]] if x["auction_open"] else []
    return {'bounded-next-offer':v0,'ceiling-exhaustion':v1,'remaining-proxy-size':v2,'manual-control-handoff':v3,'one-trigger-submission':v4,'lot-mandate':v5,'suspension-resume':v6,'manual-price-precedence':v7,'proxy-collateral-size':v8,'closed-auction-trigger':v9}
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
fixtures = [('token replay', {'current': 10, 'ceiling': 16, 'increment': 3, 'quantity': 5, 'filled': 2, 'enabled': True, 'owner_present': False, 'token': 't1', 'last_token': 't1', 'lot': 'A', 'authorized_lots': ['A'], 'suspended': False, 'manual_price': 12, 'manual_active': True, 'credit': 100, 'unit_hold': 8, 'triggers': ['outbid', 'outbid', 'price'], 'allowed': ['outbid'], 'auction_open': True}, [[], [], [], [], []]), ('ceiling reached / token replay', {'current': 16, 'ceiling': 16, 'increment': 3, 'quantity': 5, 'filled': 2, 'enabled': True, 'owner_present': False, 'token': 't1', 'last_token': 't1', 'lot': 'A', 'authorized_lots': ['A'], 'suspended': False, 'manual_price': 12, 'manual_active': True, 'credit': 100, 'unit_hold': 8, 'triggers': ['outbid', 'outbid', 'price'], 'allowed': ['outbid'], 'auction_open': True}, [[], [], [], [], []]), ('normal contract', {'current': 10, 'ceiling': 16, 'increment': 3, 'quantity': 5, 'filled': 2, 'enabled': True, 'owner_present': False, 'token': 't2', 'last_token': 't1', 'lot': 'A', 'authorized_lots': ['A'], 'suspended': False, 'manual_price': 12, 'manual_active': True, 'credit': 100, 'unit_hold': 8, 'triggers': ['outbid', 'outbid', 'price'], 'allowed': ['outbid'], 'auction_open': True}, [['A'], ['A'], ['A'], ['A'], ['A']]), ('ceiling reached', {'current': 16, 'ceiling': 16, 'increment': 3, 'quantity': 5, 'filled': 2, 'enabled': True, 'owner_present': False, 'token': 't2', 'last_token': 't1', 'lot': 'A', 'authorized_lots': ['A'], 'suspended': False, 'manual_price': 12, 'manual_active': True, 'credit': 100, 'unit_hold': 8, 'triggers': ['outbid', 'outbid', 'price'], 'allowed': ['outbid'], 'auction_open': True}, [['A'], ['A'], ['A'], ['A'], ['A']]), ('step exceeds ceiling', {'current': 15, 'ceiling': 16, 'increment': 3, 'quantity': 5, 'filled': 2, 'enabled': True, 'owner_present': False, 'token': 't2', 'last_token': 't1', 'lot': 'A', 'authorized_lots': ['A'], 'suspended': False, 'manual_price': 12, 'manual_active': True, 'credit': 100, 'unit_hold': 8, 'triggers': ['outbid', 'outbid', 'price'], 'allowed': ['outbid'], 'auction_open': True}, [['A'], ['A'], ['A'], ['A'], ['A']]), ('disabled instruction', {'current': 10, 'ceiling': 16, 'increment': 3, 'quantity': 5, 'filled': 2, 'enabled': False, 'owner_present': False, 'token': 't2', 'last_token': 't1', 'lot': 'A', 'authorized_lots': ['A'], 'suspended': False, 'manual_price': 12, 'manual_active': True, 'credit': 100, 'unit_hold': 8, 'triggers': ['outbid', 'outbid', 'price'], 'allowed': ['outbid'], 'auction_open': True}, [['A'], ['A'], ['A'], ['A'], ['A']]), ('owner controls bid', {'current': 10, 'ceiling': 16, 'increment': 3, 'quantity': 5, 'filled': 2, 'enabled': True, 'owner_present': True, 'token': 't2', 'last_token': 't1', 'lot': 'A', 'authorized_lots': ['A'], 'suspended': False, 'manual_price': 12, 'manual_active': True, 'credit': 100, 'unit_hold': 8, 'triggers': ['outbid', 'outbid', 'price'], 'allowed': ['outbid'], 'auction_open': True}, [['A'], ['A'], ['A'], ['A'], ['A']]), ('wrong lot', {'current': 10, 'ceiling': 16, 'increment': 3, 'quantity': 5, 'filled': 2, 'enabled': True, 'owner_present': False, 'token': 't2', 'last_token': 't1', 'lot': 'B', 'authorized_lots': ['A'], 'suspended': False, 'manual_price': 12, 'manual_active': True, 'credit': 100, 'unit_hold': 8, 'triggers': ['outbid', 'outbid', 'price'], 'allowed': ['outbid'], 'auction_open': True}, [['B'], ['B'], ['B'], ['B'], ['B']]), ('suspended', {'current': 10, 'ceiling': 16, 'increment': 3, 'quantity': 5, 'filled': 2, 'enabled': True, 'owner_present': False, 'token': 't2', 'last_token': 't1', 'lot': 'A', 'authorized_lots': ['A'], 'suspended': True, 'manual_price': 12, 'manual_active': True, 'credit': 100, 'unit_hold': 8, 'triggers': ['outbid', 'outbid', 'price'], 'allowed': ['outbid'], 'auction_open': True}, [['A'], ['A'], ['A'], ['A'], ['A']]), ('manual override absent', {'current': 10, 'ceiling': 16, 'increment': 3, 'quantity': 5, 'filled': 2, 'enabled': True, 'owner_present': False, 'token': 't2', 'last_token': 't1', 'lot': 'A', 'authorized_lots': ['A'], 'suspended': False, 'manual_price': 12, 'manual_active': False, 'credit': 100, 'unit_hold': 8, 'triggers': ['outbid', 'outbid', 'price'], 'allowed': ['outbid'], 'auction_open': True}, [['A'], ['A'], ['A'], ['A'], ['A']])]
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))['one-trigger-submission'], 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 fixtureActualExpectedOutcome
token replay['A'][]Failed
ceiling reached / token replay['A'][]Failed
normal contract['A']['A']Passed
ceiling reached['A']['A']Passed
step exceeds ceiling['A']['A']Passed
disabled instruction['A']['A']Passed
owner controls bid['A']['A']Passed
wrong lot['B']['B']Passed
suspended['A']['A']Passed
manual override absent['A']['A']Passed

SHA-256 / 9677b780e012c30087538363a8ba1b88ce957e84b577f7b79f0fe17c66a928f8

2 / The unsuccessful fix

Exit 1
"""Failure Map reference implementation. Python standard library only."""
import json

N = 1
observations = []
def solve(x):
    v0 = min(x["ceiling"],x["current"]+x["increment"])
    v1 = x["current"]<x["ceiling"] and x["increment"]>0
    v2 = max(0,x["quantity"]-x["filled"])
    v3 = x["enabled"] and not x["owner_present"]
    v4 = []
    v5 = x["lot"] in x["authorized_lots"]
    v6 = x["enabled"] and not x["suspended"]
    v7 = x["manual_price"] if x["manual_active"] else x["current"]
    v8 = min(max(0,x["quantity"]-x["filled"]),x["credit"]//max(1,x["unit_hold"]))
    v9 = [t for t in x["triggers"] if t in x["allowed"]] if x["auction_open"] else []
    return {'bounded-next-offer':v0,'ceiling-exhaustion':v1,'remaining-proxy-size':v2,'manual-control-handoff':v3,'one-trigger-submission':v4,'lot-mandate':v5,'suspension-resume':v6,'manual-price-precedence':v7,'proxy-collateral-size':v8,'closed-auction-trigger':v9}
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
fixtures = [('token replay', {'current': 10, 'ceiling': 16, 'increment': 3, 'quantity': 5, 'filled': 2, 'enabled': True, 'owner_present': False, 'token': 't1', 'last_token': 't1', 'lot': 'A', 'authorized_lots': ['A'], 'suspended': False, 'manual_price': 12, 'manual_active': True, 'credit': 100, 'unit_hold': 8, 'triggers': ['outbid', 'outbid', 'price'], 'allowed': ['outbid'], 'auction_open': True}, [[], [], [], [], []]), ('ceiling reached / token replay', {'current': 16, 'ceiling': 16, 'increment': 3, 'quantity': 5, 'filled': 2, 'enabled': True, 'owner_present': False, 'token': 't1', 'last_token': 't1', 'lot': 'A', 'authorized_lots': ['A'], 'suspended': False, 'manual_price': 12, 'manual_active': True, 'credit': 100, 'unit_hold': 8, 'triggers': ['outbid', 'outbid', 'price'], 'allowed': ['outbid'], 'auction_open': True}, [[], [], [], [], []]), ('normal contract', {'current': 10, 'ceiling': 16, 'increment': 3, 'quantity': 5, 'filled': 2, 'enabled': True, 'owner_present': False, 'token': 't2', 'last_token': 't1', 'lot': 'A', 'authorized_lots': ['A'], 'suspended': False, 'manual_price': 12, 'manual_active': True, 'credit': 100, 'unit_hold': 8, 'triggers': ['outbid', 'outbid', 'price'], 'allowed': ['outbid'], 'auction_open': True}, [['A'], ['A'], ['A'], ['A'], ['A']]), ('ceiling reached', {'current': 16, 'ceiling': 16, 'increment': 3, 'quantity': 5, 'filled': 2, 'enabled': True, 'owner_present': False, 'token': 't2', 'last_token': 't1', 'lot': 'A', 'authorized_lots': ['A'], 'suspended': False, 'manual_price': 12, 'manual_active': True, 'credit': 100, 'unit_hold': 8, 'triggers': ['outbid', 'outbid', 'price'], 'allowed': ['outbid'], 'auction_open': True}, [['A'], ['A'], ['A'], ['A'], ['A']]), ('step exceeds ceiling', {'current': 15, 'ceiling': 16, 'increment': 3, 'quantity': 5, 'filled': 2, 'enabled': True, 'owner_present': False, 'token': 't2', 'last_token': 't1', 'lot': 'A', 'authorized_lots': ['A'], 'suspended': False, 'manual_price': 12, 'manual_active': True, 'credit': 100, 'unit_hold': 8, 'triggers': ['outbid', 'outbid', 'price'], 'allowed': ['outbid'], 'auction_open': True}, [['A'], ['A'], ['A'], ['A'], ['A']]), ('disabled instruction', {'current': 10, 'ceiling': 16, 'increment': 3, 'quantity': 5, 'filled': 2, 'enabled': False, 'owner_present': False, 'token': 't2', 'last_token': 't1', 'lot': 'A', 'authorized_lots': ['A'], 'suspended': False, 'manual_price': 12, 'manual_active': True, 'credit': 100, 'unit_hold': 8, 'triggers': ['outbid', 'outbid', 'price'], 'allowed': ['outbid'], 'auction_open': True}, [['A'], ['A'], ['A'], ['A'], ['A']]), ('owner controls bid', {'current': 10, 'ceiling': 16, 'increment': 3, 'quantity': 5, 'filled': 2, 'enabled': True, 'owner_present': True, 'token': 't2', 'last_token': 't1', 'lot': 'A', 'authorized_lots': ['A'], 'suspended': False, 'manual_price': 12, 'manual_active': True, 'credit': 100, 'unit_hold': 8, 'triggers': ['outbid', 'outbid', 'price'], 'allowed': ['outbid'], 'auction_open': True}, [['A'], ['A'], ['A'], ['A'], ['A']]), ('wrong lot', {'current': 10, 'ceiling': 16, 'increment': 3, 'quantity': 5, 'filled': 2, 'enabled': True, 'owner_present': False, 'token': 't2', 'last_token': 't1', 'lot': 'B', 'authorized_lots': ['A'], 'suspended': False, 'manual_price': 12, 'manual_active': True, 'credit': 100, 'unit_hold': 8, 'triggers': ['outbid', 'outbid', 'price'], 'allowed': ['outbid'], 'auction_open': True}, [['B'], ['B'], ['B'], ['B'], ['B']]), ('suspended', {'current': 10, 'ceiling': 16, 'increment': 3, 'quantity': 5, 'filled': 2, 'enabled': True, 'owner_present': False, 'token': 't2', 'last_token': 't1', 'lot': 'A', 'authorized_lots': ['A'], 'suspended': True, 'manual_price': 12, 'manual_active': True, 'credit': 100, 'unit_hold': 8, 'triggers': ['outbid', 'outbid', 'price'], 'allowed': ['outbid'], 'auction_open': True}, [['A'], ['A'], ['A'], ['A'], ['A']]), ('manual override absent', {'current': 10, 'ceiling': 16, 'increment': 3, 'quantity': 5, 'filled': 2, 'enabled': True, 'owner_present': False, 'token': 't2', 'last_token': 't1', 'lot': 'A', 'authorized_lots': ['A'], 'suspended': False, 'manual_price': 12, 'manual_active': False, 'credit': 100, 'unit_hold': 8, 'triggers': ['outbid', 'outbid', 'price'], 'allowed': ['outbid'], 'auction_open': True}, [['A'], ['A'], ['A'], ['A'], ['A']])]
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))['one-trigger-submission'], 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 fixtureActualExpectedOutcome
token replay[][]Passed
ceiling reached / token replay[][]Passed
normal contract[]['A']Failed
ceiling reached[]['A']Failed
step exceeds ceiling[]['A']Failed
disabled instruction[]['A']Failed
owner controls bid[]['A']Failed
wrong lot[]['B']Failed
suspended[]['A']Failed
manual override absent[]['A']Failed

SHA-256 / b64e07f3486855dc9fe899ff2a3bfe8d18d22117ff9a05dc8d6c26716f2a624d

3 / The verified repair

Exit 0
"""Failure Map reference implementation. Python standard library only."""
import json

N = 1
observations = []
def solve(x):
    v0 = min(x["ceiling"],x["current"]+x["increment"])
    v1 = x["current"]<x["ceiling"] and x["increment"]>0
    v2 = max(0,x["quantity"]-x["filled"])
    v3 = x["enabled"] and not x["owner_present"]
    v4 = [] if x["token"]==x["last_token"] else [x["lot"]]
    v5 = x["lot"] in x["authorized_lots"]
    v6 = x["enabled"] and not x["suspended"]
    v7 = x["manual_price"] if x["manual_active"] else x["current"]
    v8 = min(max(0,x["quantity"]-x["filled"]),x["credit"]//max(1,x["unit_hold"]))
    v9 = [t for t in x["triggers"] if t in x["allowed"]] if x["auction_open"] else []
    return {'bounded-next-offer':v0,'ceiling-exhaustion':v1,'remaining-proxy-size':v2,'manual-control-handoff':v3,'one-trigger-submission':v4,'lot-mandate':v5,'suspension-resume':v6,'manual-price-precedence':v7,'proxy-collateral-size':v8,'closed-auction-trigger':v9}
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
fixtures = [('token replay', {'current': 10, 'ceiling': 16, 'increment': 3, 'quantity': 5, 'filled': 2, 'enabled': True, 'owner_present': False, 'token': 't1', 'last_token': 't1', 'lot': 'A', 'authorized_lots': ['A'], 'suspended': False, 'manual_price': 12, 'manual_active': True, 'credit': 100, 'unit_hold': 8, 'triggers': ['outbid', 'outbid', 'price'], 'allowed': ['outbid'], 'auction_open': True}, [[], [], [], [], []]), ('ceiling reached / token replay', {'current': 16, 'ceiling': 16, 'increment': 3, 'quantity': 5, 'filled': 2, 'enabled': True, 'owner_present': False, 'token': 't1', 'last_token': 't1', 'lot': 'A', 'authorized_lots': ['A'], 'suspended': False, 'manual_price': 12, 'manual_active': True, 'credit': 100, 'unit_hold': 8, 'triggers': ['outbid', 'outbid', 'price'], 'allowed': ['outbid'], 'auction_open': True}, [[], [], [], [], []]), ('normal contract', {'current': 10, 'ceiling': 16, 'increment': 3, 'quantity': 5, 'filled': 2, 'enabled': True, 'owner_present': False, 'token': 't2', 'last_token': 't1', 'lot': 'A', 'authorized_lots': ['A'], 'suspended': False, 'manual_price': 12, 'manual_active': True, 'credit': 100, 'unit_hold': 8, 'triggers': ['outbid', 'outbid', 'price'], 'allowed': ['outbid'], 'auction_open': True}, [['A'], ['A'], ['A'], ['A'], ['A']]), ('ceiling reached', {'current': 16, 'ceiling': 16, 'increment': 3, 'quantity': 5, 'filled': 2, 'enabled': True, 'owner_present': False, 'token': 't2', 'last_token': 't1', 'lot': 'A', 'authorized_lots': ['A'], 'suspended': False, 'manual_price': 12, 'manual_active': True, 'credit': 100, 'unit_hold': 8, 'triggers': ['outbid', 'outbid', 'price'], 'allowed': ['outbid'], 'auction_open': True}, [['A'], ['A'], ['A'], ['A'], ['A']]), ('step exceeds ceiling', {'current': 15, 'ceiling': 16, 'increment': 3, 'quantity': 5, 'filled': 2, 'enabled': True, 'owner_present': False, 'token': 't2', 'last_token': 't1', 'lot': 'A', 'authorized_lots': ['A'], 'suspended': False, 'manual_price': 12, 'manual_active': True, 'credit': 100, 'unit_hold': 8, 'triggers': ['outbid', 'outbid', 'price'], 'allowed': ['outbid'], 'auction_open': True}, [['A'], ['A'], ['A'], ['A'], ['A']]), ('disabled instruction', {'current': 10, 'ceiling': 16, 'increment': 3, 'quantity': 5, 'filled': 2, 'enabled': False, 'owner_present': False, 'token': 't2', 'last_token': 't1', 'lot': 'A', 'authorized_lots': ['A'], 'suspended': False, 'manual_price': 12, 'manual_active': True, 'credit': 100, 'unit_hold': 8, 'triggers': ['outbid', 'outbid', 'price'], 'allowed': ['outbid'], 'auction_open': True}, [['A'], ['A'], ['A'], ['A'], ['A']]), ('owner controls bid', {'current': 10, 'ceiling': 16, 'increment': 3, 'quantity': 5, 'filled': 2, 'enabled': True, 'owner_present': True, 'token': 't2', 'last_token': 't1', 'lot': 'A', 'authorized_lots': ['A'], 'suspended': False, 'manual_price': 12, 'manual_active': True, 'credit': 100, 'unit_hold': 8, 'triggers': ['outbid', 'outbid', 'price'], 'allowed': ['outbid'], 'auction_open': True}, [['A'], ['A'], ['A'], ['A'], ['A']]), ('wrong lot', {'current': 10, 'ceiling': 16, 'increment': 3, 'quantity': 5, 'filled': 2, 'enabled': True, 'owner_present': False, 'token': 't2', 'last_token': 't1', 'lot': 'B', 'authorized_lots': ['A'], 'suspended': False, 'manual_price': 12, 'manual_active': True, 'credit': 100, 'unit_hold': 8, 'triggers': ['outbid', 'outbid', 'price'], 'allowed': ['outbid'], 'auction_open': True}, [['B'], ['B'], ['B'], ['B'], ['B']]), ('suspended', {'current': 10, 'ceiling': 16, 'increment': 3, 'quantity': 5, 'filled': 2, 'enabled': True, 'owner_present': False, 'token': 't2', 'last_token': 't1', 'lot': 'A', 'authorized_lots': ['A'], 'suspended': True, 'manual_price': 12, 'manual_active': True, 'credit': 100, 'unit_hold': 8, 'triggers': ['outbid', 'outbid', 'price'], 'allowed': ['outbid'], 'auction_open': True}, [['A'], ['A'], ['A'], ['A'], ['A']]), ('manual override absent', {'current': 10, 'ceiling': 16, 'increment': 3, 'quantity': 5, 'filled': 2, 'enabled': True, 'owner_present': False, 'token': 't2', 'last_token': 't1', 'lot': 'A', 'authorized_lots': ['A'], 'suspended': False, 'manual_price': 12, 'manual_active': False, 'credit': 100, 'unit_hold': 8, 'triggers': ['outbid', 'outbid', 'price'], 'allowed': ['outbid'], 'auction_open': True}, [['A'], ['A'], ['A'], ['A'], ['A']])]
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))['one-trigger-submission'], 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 fixtureActualExpectedOutcome
token replay[][]Passed
ceiling reached / token replay[][]Passed
normal contract['A']['A']Passed
ceiling reached['A']['A']Passed
step exceeds ceiling['A']['A']Passed
disabled instruction['A']['A']Passed
owner controls bid['A']['A']Passed
wrong lot['B']['B']Passed
suspended['A']['A']Passed
manual override absent['A']['A']Passed

SHA-256 / 09a440e5c8f3ed0db1e722d4f3ede94b6f0894b6cb0c19970f29b8fa04a35f76

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 2026-09-29T14:46:09.232067+00:00.

Case digest / 3a4239426bef9cf7899046745dc3dbf13ae9e2eee26a1790dc3e3b657fc72c5d