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FA-57681 / Auction allocation rules / Open access

Seller supply amendment: consented supply change · case 01

Supply changes ignore the per-lot seller consent schedule.

Verified by executionVariant 1 · 9 checks per implementationDownload source bundle ↓JSON ↗

ROOT CAUSE

Supply changes ignore the per-lot seller consent schedule.

THE FAILURE

Supply changes ignore the per-lot seller consent schedule.

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

Case contract

An auction seller may amend offered inventory before freeze. Confirmed awards and firm reservations form a floor; rejected amendments retain the previous inventory. Per-lot changes are simultaneous and cannot use removed supply to satisfy prior awards. Named decision consented-supply-change: For consented supply change, apply the stipulated decision {l:q if l in x["consent"] else x["old"][l] for l,q in x["new"].items()}.

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 = {l:max(q,x["awarded"].get(l,0)) for l,q in x["new"].items()}
    v1 = {l:max(q,x["awarded"].get(l,0)+x["reserved"].get(l,0)) for l,q in x["new"].items()}
    v2 = {l:(min(q,x["old"][l]) if x["frozen"] else q) for l,q in x["new"].items()}
    v3 = x["new"] if x["approved"] else x["old"]
    v4 = {l:max(0,x["old"][l]-x["awarded"].get(l,0)-x["reserved"].get(l,0)) for l in x["withdrawn"]}
    v5 = {l:max(0,q-x["delivered"].get(l,0)) for l,q in x["old"].items()}
    v6 = all(max(0,x["new"][l]-x["old"][l])<=x["certified_additions"].get(l,0) for l in x["added"])
    v7 = [l for l in x["new"] if x["sellers"][l]==x["actor"]]
    v8 = x["new"]
    v9 = x["expected"]==x["revision"]
    return {'award-inventory-floor':v0,'reservation-inventory-floor':v1,'freeze-supply-increase':v2,'supply-approval-atomicity':v3,'withdrawal-unawarded-stock':v4,'delivered-stock-accounting':v5,'certified-added-quantity':v6,'seller-amendment-ownership':v7,'consented-supply-change':v8,'inventory-revision-guard':v9}
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
fixtures = [('normal contract', {'old': {'A': 8, 'B': 5}, 'new': {'A': 5, 'B': 7}, 'awarded': {'A': 4, 'B': 2}, 'reserved': {'A': 2, 'B': 1}, 'frozen': False, 'approved': False, 'withdrawn': ['A'], 'delivered': {'A': 1, 'B': 0}, 'added': ['B'], 'certified_additions': {'B': 1}, 'consent': ['A'], 'sellers': {'A': 'x', 'B': 'y'}, 'actor': 'x', 'revision': 2, 'expected': 2}, [{'A': 5, 'B': 5}, {'A': 10, 'B': 10}, {'A': 15, 'B': 15}, {'A': 20, 'B': 20}, {'A': 25, 'B': 25}]), ('amendment approved', {'old': {'A': 8, 'B': 5}, 'new': {'A': 5, 'B': 7}, 'awarded': {'A': 4, 'B': 2}, 'reserved': {'A': 2, 'B': 1}, 'frozen': False, 'approved': True, 'withdrawn': ['A'], 'delivered': {'A': 1, 'B': 0}, 'added': ['B'], 'certified_additions': {'B': 1}, 'consent': ['A'], 'sellers': {'A': 'x', 'B': 'y'}, 'actor': 'x', 'revision': 2, 'expected': 2}, [{'A': 5, 'B': 5}, {'A': 10, 'B': 10}, {'A': 15, 'B': 15}, {'A': 20, 'B': 20}, {'A': 25, 'B': 25}]), ('supply frozen', {'old': {'A': 8, 'B': 5}, 'new': {'A': 5, 'B': 7}, 'awarded': {'A': 4, 'B': 2}, 'reserved': {'A': 2, 'B': 1}, 'frozen': True, 'approved': False, 'withdrawn': ['A'], 'delivered': {'A': 1, 'B': 0}, 'added': ['B'], 'certified_additions': {'B': 1}, 'consent': ['A'], 'sellers': {'A': 'x', 'B': 'y'}, 'actor': 'x', 'revision': 2, 'expected': 2}, [{'A': 5, 'B': 5}, {'A': 10, 'B': 10}, {'A': 15, 'B': 15}, {'A': 20, 'B': 20}, {'A': 25, 'B': 25}]), ('below awarded supply', {'old': {'A': 8, 'B': 5}, 'new': {'A': 2, 'B': 7}, 'awarded': {'A': 4, 'B': 2}, 'reserved': {'A': 2, 'B': 1}, 'frozen': False, 'approved': False, 'withdrawn': ['A'], 'delivered': {'A': 1, 'B': 0}, 'added': ['B'], 'certified_additions': {'B': 1}, 'consent': ['A'], 'sellers': {'A': 'x', 'B': 'y'}, 'actor': 'x', 'revision': 2, 'expected': 2}, [{'A': 2, 'B': 5}, {'A': 4, 'B': 10}, {'A': 6, 'B': 15}, {'A': 8, 'B': 20}, {'A': 10, 'B': 25}]), ('unchanged supply', {'old': {'A': 8, 'B': 5}, 'new': {'A': 8, 'B': 5}, 'awarded': {'A': 4, 'B': 2}, 'reserved': {'A': 2, 'B': 1}, 'frozen': False, 'approved': False, 'withdrawn': ['A'], 'delivered': {'A': 1, 'B': 0}, 'added': ['B'], 'certified_additions': {'B': 1}, 'consent': ['A'], 'sellers': {'A': 'x', 'B': 'y'}, 'actor': 'x', 'revision': 2, 'expected': 2}, [{'A': 8, 'B': 5}, {'A': 16, 'B': 10}, {'A': 24, 'B': 15}, {'A': 32, 'B': 20}, {'A': 40, 'B': 25}]), ('all reserves released', {'old': {'A': 8, 'B': 5}, 'new': {'A': 5, 'B': 7}, 'awarded': {'A': 4, 'B': 2}, 'reserved': {'A': 0, 'B': 0}, 'frozen': False, 'approved': False, 'withdrawn': ['A'], 'delivered': {'A': 1, 'B': 0}, 'added': ['B'], 'certified_additions': {'B': 1}, 'consent': ['A'], 'sellers': {'A': 'x', 'B': 'y'}, 'actor': 'x', 'revision': 2, 'expected': 2}, [{'A': 5, 'B': 5}, {'A': 10, 'B': 10}, {'A': 15, 'B': 15}, {'A': 20, 'B': 20}, {'A': 25, 'B': 25}]), ('certified increase', {'old': {'A': 8, 'B': 5}, 'new': {'A': 5, 'B': 7}, 'awarded': {'A': 4, 'B': 2}, 'reserved': {'A': 2, 'B': 1}, 'frozen': False, 'approved': False, 'withdrawn': ['A'], 'delivered': {'A': 1, 'B': 0}, 'added': ['B'], 'certified_additions': {'B': 3}, 'consent': ['A'], 'sellers': {'A': 'x', 'B': 'y'}, 'actor': 'x', 'revision': 2, 'expected': 2}, [{'A': 5, 'B': 5}, {'A': 10, 'B': 10}, {'A': 15, 'B': 15}, {'A': 20, 'B': 20}, {'A': 25, 'B': 25}]), ('wrong actor', {'old': {'A': 8, 'B': 5}, 'new': {'A': 5, 'B': 7}, 'awarded': {'A': 4, 'B': 2}, 'reserved': {'A': 2, 'B': 1}, 'frozen': False, 'approved': False, 'withdrawn': ['A'], 'delivered': {'A': 1, 'B': 0}, 'added': ['B'], 'certified_additions': {'B': 1}, 'consent': ['A'], 'sellers': {'A': 'x', 'B': 'y'}, 'actor': 'z', 'revision': 2, 'expected': 2}, [{'A': 5, 'B': 5}, {'A': 10, 'B': 10}, {'A': 15, 'B': 15}, {'A': 20, 'B': 20}, {'A': 25, 'B': 25}]), ('all withdrawn', {'old': {'A': 8, 'B': 5}, 'new': {'A': 5, 'B': 7}, 'awarded': {'A': 4, 'B': 2}, 'reserved': {'A': 2, 'B': 1}, 'frozen': False, 'approved': False, 'withdrawn': ['A', 'B'], 'delivered': {'A': 1, 'B': 0}, 'added': ['B'], 'certified_additions': {'B': 1}, 'consent': ['A'], 'sellers': {'A': 'x', 'B': 'y'}, 'actor': 'x', 'revision': 2, 'expected': 2}, [{'A': 5, 'B': 5}, {'A': 10, 'B': 10}, {'A': 15, 'B': 15}, {'A': 20, 'B': 20}, {'A': 25, 'B': 25}])]
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))['consented-supply-change'], 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
normal contract{'A': 5, 'B': 7}{'A': 5, 'B': 5}Failed
amendment approved{'A': 5, 'B': 7}{'A': 5, 'B': 5}Failed
supply frozen{'A': 5, 'B': 7}{'A': 5, 'B': 5}Failed
below awarded supply{'A': 2, 'B': 7}{'A': 2, 'B': 5}Failed
unchanged supply{'A': 8, 'B': 5}{'A': 8, 'B': 5}Passed
all reserves released{'A': 5, 'B': 7}{'A': 5, 'B': 5}Failed
certified increase{'A': 5, 'B': 7}{'A': 5, 'B': 5}Failed
wrong actor{'A': 5, 'B': 7}{'A': 5, 'B': 5}Failed
all withdrawn{'A': 5, 'B': 7}{'A': 5, 'B': 5}Failed

SHA-256 / 11e15043feffd0a2b76ea79d711301bd3643eabbbc62f05e16ab639f28614d90

2 / The unsuccessful fix

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

N = 1
observations = []
def solve(x):
    v0 = {l:max(q,x["awarded"].get(l,0)) for l,q in x["new"].items()}
    v1 = {l:max(q,x["awarded"].get(l,0)+x["reserved"].get(l,0)) for l,q in x["new"].items()}
    v2 = {l:(min(q,x["old"][l]) if x["frozen"] else q) for l,q in x["new"].items()}
    v3 = x["new"] if x["approved"] else x["old"]
    v4 = {l:max(0,x["old"][l]-x["awarded"].get(l,0)-x["reserved"].get(l,0)) for l in x["withdrawn"]}
    v5 = {l:max(0,q-x["delivered"].get(l,0)) for l,q in x["old"].items()}
    v6 = all(max(0,x["new"][l]-x["old"][l])<=x["certified_additions"].get(l,0) for l in x["added"])
    v7 = [l for l in x["new"] if x["sellers"][l]==x["actor"]]
    v8 = x["old"]
    v9 = x["expected"]==x["revision"]
    return {'award-inventory-floor':v0,'reservation-inventory-floor':v1,'freeze-supply-increase':v2,'supply-approval-atomicity':v3,'withdrawal-unawarded-stock':v4,'delivered-stock-accounting':v5,'certified-added-quantity':v6,'seller-amendment-ownership':v7,'consented-supply-change':v8,'inventory-revision-guard':v9}
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
fixtures = [('normal contract', {'old': {'A': 8, 'B': 5}, 'new': {'A': 5, 'B': 7}, 'awarded': {'A': 4, 'B': 2}, 'reserved': {'A': 2, 'B': 1}, 'frozen': False, 'approved': False, 'withdrawn': ['A'], 'delivered': {'A': 1, 'B': 0}, 'added': ['B'], 'certified_additions': {'B': 1}, 'consent': ['A'], 'sellers': {'A': 'x', 'B': 'y'}, 'actor': 'x', 'revision': 2, 'expected': 2}, [{'A': 5, 'B': 5}, {'A': 10, 'B': 10}, {'A': 15, 'B': 15}, {'A': 20, 'B': 20}, {'A': 25, 'B': 25}]), ('amendment approved', {'old': {'A': 8, 'B': 5}, 'new': {'A': 5, 'B': 7}, 'awarded': {'A': 4, 'B': 2}, 'reserved': {'A': 2, 'B': 1}, 'frozen': False, 'approved': True, 'withdrawn': ['A'], 'delivered': {'A': 1, 'B': 0}, 'added': ['B'], 'certified_additions': {'B': 1}, 'consent': ['A'], 'sellers': {'A': 'x', 'B': 'y'}, 'actor': 'x', 'revision': 2, 'expected': 2}, [{'A': 5, 'B': 5}, {'A': 10, 'B': 10}, {'A': 15, 'B': 15}, {'A': 20, 'B': 20}, {'A': 25, 'B': 25}]), ('supply frozen', {'old': {'A': 8, 'B': 5}, 'new': {'A': 5, 'B': 7}, 'awarded': {'A': 4, 'B': 2}, 'reserved': {'A': 2, 'B': 1}, 'frozen': True, 'approved': False, 'withdrawn': ['A'], 'delivered': {'A': 1, 'B': 0}, 'added': ['B'], 'certified_additions': {'B': 1}, 'consent': ['A'], 'sellers': {'A': 'x', 'B': 'y'}, 'actor': 'x', 'revision': 2, 'expected': 2}, [{'A': 5, 'B': 5}, {'A': 10, 'B': 10}, {'A': 15, 'B': 15}, {'A': 20, 'B': 20}, {'A': 25, 'B': 25}]), ('below awarded supply', {'old': {'A': 8, 'B': 5}, 'new': {'A': 2, 'B': 7}, 'awarded': {'A': 4, 'B': 2}, 'reserved': {'A': 2, 'B': 1}, 'frozen': False, 'approved': False, 'withdrawn': ['A'], 'delivered': {'A': 1, 'B': 0}, 'added': ['B'], 'certified_additions': {'B': 1}, 'consent': ['A'], 'sellers': {'A': 'x', 'B': 'y'}, 'actor': 'x', 'revision': 2, 'expected': 2}, [{'A': 2, 'B': 5}, {'A': 4, 'B': 10}, {'A': 6, 'B': 15}, {'A': 8, 'B': 20}, {'A': 10, 'B': 25}]), ('unchanged supply', {'old': {'A': 8, 'B': 5}, 'new': {'A': 8, 'B': 5}, 'awarded': {'A': 4, 'B': 2}, 'reserved': {'A': 2, 'B': 1}, 'frozen': False, 'approved': False, 'withdrawn': ['A'], 'delivered': {'A': 1, 'B': 0}, 'added': ['B'], 'certified_additions': {'B': 1}, 'consent': ['A'], 'sellers': {'A': 'x', 'B': 'y'}, 'actor': 'x', 'revision': 2, 'expected': 2}, [{'A': 8, 'B': 5}, {'A': 16, 'B': 10}, {'A': 24, 'B': 15}, {'A': 32, 'B': 20}, {'A': 40, 'B': 25}]), ('all reserves released', {'old': {'A': 8, 'B': 5}, 'new': {'A': 5, 'B': 7}, 'awarded': {'A': 4, 'B': 2}, 'reserved': {'A': 0, 'B': 0}, 'frozen': False, 'approved': False, 'withdrawn': ['A'], 'delivered': {'A': 1, 'B': 0}, 'added': ['B'], 'certified_additions': {'B': 1}, 'consent': ['A'], 'sellers': {'A': 'x', 'B': 'y'}, 'actor': 'x', 'revision': 2, 'expected': 2}, [{'A': 5, 'B': 5}, {'A': 10, 'B': 10}, {'A': 15, 'B': 15}, {'A': 20, 'B': 20}, {'A': 25, 'B': 25}]), ('certified increase', {'old': {'A': 8, 'B': 5}, 'new': {'A': 5, 'B': 7}, 'awarded': {'A': 4, 'B': 2}, 'reserved': {'A': 2, 'B': 1}, 'frozen': False, 'approved': False, 'withdrawn': ['A'], 'delivered': {'A': 1, 'B': 0}, 'added': ['B'], 'certified_additions': {'B': 3}, 'consent': ['A'], 'sellers': {'A': 'x', 'B': 'y'}, 'actor': 'x', 'revision': 2, 'expected': 2}, [{'A': 5, 'B': 5}, {'A': 10, 'B': 10}, {'A': 15, 'B': 15}, {'A': 20, 'B': 20}, {'A': 25, 'B': 25}]), ('wrong actor', {'old': {'A': 8, 'B': 5}, 'new': {'A': 5, 'B': 7}, 'awarded': {'A': 4, 'B': 2}, 'reserved': {'A': 2, 'B': 1}, 'frozen': False, 'approved': False, 'withdrawn': ['A'], 'delivered': {'A': 1, 'B': 0}, 'added': ['B'], 'certified_additions': {'B': 1}, 'consent': ['A'], 'sellers': {'A': 'x', 'B': 'y'}, 'actor': 'z', 'revision': 2, 'expected': 2}, [{'A': 5, 'B': 5}, {'A': 10, 'B': 10}, {'A': 15, 'B': 15}, {'A': 20, 'B': 20}, {'A': 25, 'B': 25}]), ('all withdrawn', {'old': {'A': 8, 'B': 5}, 'new': {'A': 5, 'B': 7}, 'awarded': {'A': 4, 'B': 2}, 'reserved': {'A': 2, 'B': 1}, 'frozen': False, 'approved': False, 'withdrawn': ['A', 'B'], 'delivered': {'A': 1, 'B': 0}, 'added': ['B'], 'certified_additions': {'B': 1}, 'consent': ['A'], 'sellers': {'A': 'x', 'B': 'y'}, 'actor': 'x', 'revision': 2, 'expected': 2}, [{'A': 5, 'B': 5}, {'A': 10, 'B': 10}, {'A': 15, 'B': 15}, {'A': 20, 'B': 20}, {'A': 25, 'B': 25}])]
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))['consented-supply-change'], 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
normal contract{'A': 8, 'B': 5}{'A': 5, 'B': 5}Failed
amendment approved{'A': 8, 'B': 5}{'A': 5, 'B': 5}Failed
supply frozen{'A': 8, 'B': 5}{'A': 5, 'B': 5}Failed
below awarded supply{'A': 8, 'B': 5}{'A': 2, 'B': 5}Failed
unchanged supply{'A': 8, 'B': 5}{'A': 8, 'B': 5}Passed
all reserves released{'A': 8, 'B': 5}{'A': 5, 'B': 5}Failed
certified increase{'A': 8, 'B': 5}{'A': 5, 'B': 5}Failed
wrong actor{'A': 8, 'B': 5}{'A': 5, 'B': 5}Failed
all withdrawn{'A': 8, 'B': 5}{'A': 5, 'B': 5}Failed

SHA-256 / 96123ba60cb6da02423d21c3594245662a493bbdaa5bc14caea89b57ba5897c0

HELD IN THE MEMBER ARCHIVE

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

This mechanism has 9 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.

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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 2026-09-29T14:46:19.273138+00:00.

Case digest / 537b4f5d96efdff5b6c00d3580d9f5d48210a72248aa4d93fea60888479af94a