FA-56451 / Auction allocation rules / Open access
Escrow reservation: capture release · case 01
Captured fills remain reserved or are released using historical captures.
ROOT CAUSE
Captured fills remain reserved or are released using historical captures.
VERIFIED REPAIR
Release the current fill amount from the current hold.
Unsuccessful approach: The attempted repair uses max(0,x["old_hold"]-x["captured"]); the explicit regression cases demonstrate that this still violates the stipulated auction rule.
Case contract
A toy per-auction escrow account distinguishes available funds, reserved collateral, captured fill payments and pending releases. Reservation replaces an old hold atomically; a failed replacement retains the old hold. Separate auction holds must remain unavailable. Named decision capture-release: Release the current fill amount from the current hold.
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["balance"]-x["other_hold"] >= x["new_hold"]
v1 = x["new_hold"] if x["replace_ok"] else x["old_hold"]
v2 = x["old_hold"]
v3 = x["balance"]-x["old_hold"]-x["other_hold"]+(x["pending"] if x["confirmed"] else 0)
v4 = min(x["refund"],x["captured"])
v5 = x["old_hold"]+x["bond"]
v6 = max(0,x["old_hold"]-x["fill_cost"]) if x["closed"] else 0
v7 = min(x["release"],max(0,x["old_hold"]-x["fill_cost"]))
v8 = max(0,x["fill_cost"]-x["fee"])
v9 = x["balance"]-x["other_hold"]-x["new_hold"] >= x["fee"]
return {'replace-credit':v0,'atomic-replacement':v1,'capture-release':v2,'pending-release-availability':v3,'refund-ceiling':v4,'bond-separation':v5,'close-release':v6,'release-clamp':v7,'seller-net-remittance':v8,'unreserved-fee-check':v9}
def check(label, actual, expected):
observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
fixtures = [('normal contract', {'balance': 100, 'old_hold': 30, 'new_hold': 50, 'other_hold': 20, 'fill_cost': 12, 'release': 5, 'pending': 7, 'confirmed': False, 'replace_ok': True, 'captured': 10, 'refund': 4, 'fee': 3, 'bond': 8, 'closed': False}, [18, 36, 54, 72, 90]), ('reuse existing collateral', {'balance': 100, 'old_hold': 30, 'new_hold': 70, 'other_hold': 20, 'fill_cost': 12, 'release': 5, 'pending': 7, 'confirmed': False, 'replace_ok': True, 'captured': 10, 'refund': 4, 'fee': 3, 'bond': 8, 'closed': False}, [18, 36, 54, 72, 90]), ('other auction limits credit', {'balance': 100, 'old_hold': 30, 'new_hold': 90, 'other_hold': 20, 'fill_cost': 12, 'release': 5, 'pending': 7, 'confirmed': False, 'replace_ok': True, 'captured': 10, 'refund': 4, 'fee': 3, 'bond': 8, 'closed': False}, [18, 36, 54, 72, 90]), ('insufficient replacement', {'balance': 100, 'old_hold': 30, 'new_hold': 200, 'other_hold': 20, 'fill_cost': 12, 'release': 5, 'pending': 7, 'confirmed': False, 'replace_ok': False, 'captured': 10, 'refund': 4, 'fee': 3, 'bond': 8, 'closed': False}, [18, 36, 54, 72, 90]), ('old hold larger', {'balance': 100, 'old_hold': 30, 'new_hold': 15, 'other_hold': 20, 'fill_cost': 12, 'release': 5, 'pending': 7, 'confirmed': False, 'replace_ok': True, 'captured': 10, 'refund': 4, 'fee': 3, 'bond': 8, 'closed': False}, [18, 36, 54, 72, 90]), ('confirmed release', {'balance': 100, 'old_hold': 30, 'new_hold': 50, 'other_hold': 20, 'fill_cost': 12, 'release': 5, 'pending': 7, 'confirmed': True, 'replace_ok': True, 'captured': 10, 'refund': 4, 'fee': 3, 'bond': 8, 'closed': False}, [18, 36, 54, 72, 90]), ('fully captured', {'balance': 100, 'old_hold': 30, 'new_hold': 50, 'other_hold': 20, 'fill_cost': 30, 'release': 5, 'pending': 7, 'confirmed': False, 'replace_ok': True, 'captured': 10, 'refund': 4, 'fee': 3, 'bond': 8, 'closed': False}, [0, 0, 0, 0, 0]), ('zero reservation', {'balance': 100, 'old_hold': 0, 'new_hold': 0, 'other_hold': 0, 'fill_cost': 12, 'release': 5, 'pending': 7, 'confirmed': False, 'replace_ok': True, 'captured': 10, 'refund': 4, 'fee': 3, 'bond': 8, 'closed': False}, [0, 0, 0, 0, 0]), ('closed auction', {'balance': 100, 'old_hold': 30, 'new_hold': 50, 'other_hold': 20, 'fill_cost': 12, 'release': 5, 'pending': 7, 'confirmed': False, 'replace_ok': True, 'captured': 10, 'refund': 4, 'fee': 3, 'bond': 8, 'closed': True}, [18, 36, 54, 72, 90])]
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))['capture-release'], 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 | 30 | 18 | Failed |
| reuse existing collateral | 30 | 18 | Failed |
| other auction limits credit | 30 | 18 | Failed |
| insufficient replacement | 30 | 18 | Failed |
| old hold larger | 30 | 18 | Failed |
| confirmed release | 30 | 18 | Failed |
| fully captured | 30 | 0 | Failed |
| zero reservation | 0 | 0 | Passed |
| closed auction | 30 | 18 | Failed |
SHA-256 / aba40825a0d221caa51aed2f60136640250038e49bfac86271325596bb47c5c2
2 / The unsuccessful fix
Exit 1"""Failure Map reference implementation. Python standard library only."""
import json
N = 1
observations = []
def solve(x):
v0 = x["balance"]-x["other_hold"] >= x["new_hold"]
v1 = x["new_hold"] if x["replace_ok"] else x["old_hold"]
v2 = max(0,x["old_hold"]-x["captured"])
v3 = x["balance"]-x["old_hold"]-x["other_hold"]+(x["pending"] if x["confirmed"] else 0)
v4 = min(x["refund"],x["captured"])
v5 = x["old_hold"]+x["bond"]
v6 = max(0,x["old_hold"]-x["fill_cost"]) if x["closed"] else 0
v7 = min(x["release"],max(0,x["old_hold"]-x["fill_cost"]))
v8 = max(0,x["fill_cost"]-x["fee"])
v9 = x["balance"]-x["other_hold"]-x["new_hold"] >= x["fee"]
return {'replace-credit':v0,'atomic-replacement':v1,'capture-release':v2,'pending-release-availability':v3,'refund-ceiling':v4,'bond-separation':v5,'close-release':v6,'release-clamp':v7,'seller-net-remittance':v8,'unreserved-fee-check':v9}
def check(label, actual, expected):
observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
fixtures = [('normal contract', {'balance': 100, 'old_hold': 30, 'new_hold': 50, 'other_hold': 20, 'fill_cost': 12, 'release': 5, 'pending': 7, 'confirmed': False, 'replace_ok': True, 'captured': 10, 'refund': 4, 'fee': 3, 'bond': 8, 'closed': False}, [18, 36, 54, 72, 90]), ('reuse existing collateral', {'balance': 100, 'old_hold': 30, 'new_hold': 70, 'other_hold': 20, 'fill_cost': 12, 'release': 5, 'pending': 7, 'confirmed': False, 'replace_ok': True, 'captured': 10, 'refund': 4, 'fee': 3, 'bond': 8, 'closed': False}, [18, 36, 54, 72, 90]), ('other auction limits credit', {'balance': 100, 'old_hold': 30, 'new_hold': 90, 'other_hold': 20, 'fill_cost': 12, 'release': 5, 'pending': 7, 'confirmed': False, 'replace_ok': True, 'captured': 10, 'refund': 4, 'fee': 3, 'bond': 8, 'closed': False}, [18, 36, 54, 72, 90]), ('insufficient replacement', {'balance': 100, 'old_hold': 30, 'new_hold': 200, 'other_hold': 20, 'fill_cost': 12, 'release': 5, 'pending': 7, 'confirmed': False, 'replace_ok': False, 'captured': 10, 'refund': 4, 'fee': 3, 'bond': 8, 'closed': False}, [18, 36, 54, 72, 90]), ('old hold larger', {'balance': 100, 'old_hold': 30, 'new_hold': 15, 'other_hold': 20, 'fill_cost': 12, 'release': 5, 'pending': 7, 'confirmed': False, 'replace_ok': True, 'captured': 10, 'refund': 4, 'fee': 3, 'bond': 8, 'closed': False}, [18, 36, 54, 72, 90]), ('confirmed release', {'balance': 100, 'old_hold': 30, 'new_hold': 50, 'other_hold': 20, 'fill_cost': 12, 'release': 5, 'pending': 7, 'confirmed': True, 'replace_ok': True, 'captured': 10, 'refund': 4, 'fee': 3, 'bond': 8, 'closed': False}, [18, 36, 54, 72, 90]), ('fully captured', {'balance': 100, 'old_hold': 30, 'new_hold': 50, 'other_hold': 20, 'fill_cost': 30, 'release': 5, 'pending': 7, 'confirmed': False, 'replace_ok': True, 'captured': 10, 'refund': 4, 'fee': 3, 'bond': 8, 'closed': False}, [0, 0, 0, 0, 0]), ('zero reservation', {'balance': 100, 'old_hold': 0, 'new_hold': 0, 'other_hold': 0, 'fill_cost': 12, 'release': 5, 'pending': 7, 'confirmed': False, 'replace_ok': True, 'captured': 10, 'refund': 4, 'fee': 3, 'bond': 8, 'closed': False}, [0, 0, 0, 0, 0]), ('closed auction', {'balance': 100, 'old_hold': 30, 'new_hold': 50, 'other_hold': 20, 'fill_cost': 12, 'release': 5, 'pending': 7, 'confirmed': False, 'replace_ok': True, 'captured': 10, 'refund': 4, 'fee': 3, 'bond': 8, 'closed': True}, [18, 36, 54, 72, 90])]
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))['capture-release'], 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 | 20 | 18 | Failed |
| reuse existing collateral | 20 | 18 | Failed |
| other auction limits credit | 20 | 18 | Failed |
| insufficient replacement | 20 | 18 | Failed |
| old hold larger | 20 | 18 | Failed |
| confirmed release | 20 | 18 | Failed |
| fully captured | 20 | 0 | Failed |
| zero reservation | 0 | 0 | Passed |
| closed auction | 20 | 18 | Failed |
SHA-256 / 426990cb797d258c48b30c6a41550c0280b228ba5e7e3195571634ccdaf31550
3 / The verified repair
Exit 0"""Failure Map reference implementation. Python standard library only."""
import json
N = 1
observations = []
def solve(x):
v0 = x["balance"]-x["other_hold"] >= x["new_hold"]
v1 = x["new_hold"] if x["replace_ok"] else x["old_hold"]
v2 = max(0,x["old_hold"]-x["fill_cost"])
v3 = x["balance"]-x["old_hold"]-x["other_hold"]+(x["pending"] if x["confirmed"] else 0)
v4 = min(x["refund"],x["captured"])
v5 = x["old_hold"]+x["bond"]
v6 = max(0,x["old_hold"]-x["fill_cost"]) if x["closed"] else 0
v7 = min(x["release"],max(0,x["old_hold"]-x["fill_cost"]))
v8 = max(0,x["fill_cost"]-x["fee"])
v9 = x["balance"]-x["other_hold"]-x["new_hold"] >= x["fee"]
return {'replace-credit':v0,'atomic-replacement':v1,'capture-release':v2,'pending-release-availability':v3,'refund-ceiling':v4,'bond-separation':v5,'close-release':v6,'release-clamp':v7,'seller-net-remittance':v8,'unreserved-fee-check':v9}
def check(label, actual, expected):
observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
fixtures = [('normal contract', {'balance': 100, 'old_hold': 30, 'new_hold': 50, 'other_hold': 20, 'fill_cost': 12, 'release': 5, 'pending': 7, 'confirmed': False, 'replace_ok': True, 'captured': 10, 'refund': 4, 'fee': 3, 'bond': 8, 'closed': False}, [18, 36, 54, 72, 90]), ('reuse existing collateral', {'balance': 100, 'old_hold': 30, 'new_hold': 70, 'other_hold': 20, 'fill_cost': 12, 'release': 5, 'pending': 7, 'confirmed': False, 'replace_ok': True, 'captured': 10, 'refund': 4, 'fee': 3, 'bond': 8, 'closed': False}, [18, 36, 54, 72, 90]), ('other auction limits credit', {'balance': 100, 'old_hold': 30, 'new_hold': 90, 'other_hold': 20, 'fill_cost': 12, 'release': 5, 'pending': 7, 'confirmed': False, 'replace_ok': True, 'captured': 10, 'refund': 4, 'fee': 3, 'bond': 8, 'closed': False}, [18, 36, 54, 72, 90]), ('insufficient replacement', {'balance': 100, 'old_hold': 30, 'new_hold': 200, 'other_hold': 20, 'fill_cost': 12, 'release': 5, 'pending': 7, 'confirmed': False, 'replace_ok': False, 'captured': 10, 'refund': 4, 'fee': 3, 'bond': 8, 'closed': False}, [18, 36, 54, 72, 90]), ('old hold larger', {'balance': 100, 'old_hold': 30, 'new_hold': 15, 'other_hold': 20, 'fill_cost': 12, 'release': 5, 'pending': 7, 'confirmed': False, 'replace_ok': True, 'captured': 10, 'refund': 4, 'fee': 3, 'bond': 8, 'closed': False}, [18, 36, 54, 72, 90]), ('confirmed release', {'balance': 100, 'old_hold': 30, 'new_hold': 50, 'other_hold': 20, 'fill_cost': 12, 'release': 5, 'pending': 7, 'confirmed': True, 'replace_ok': True, 'captured': 10, 'refund': 4, 'fee': 3, 'bond': 8, 'closed': False}, [18, 36, 54, 72, 90]), ('fully captured', {'balance': 100, 'old_hold': 30, 'new_hold': 50, 'other_hold': 20, 'fill_cost': 30, 'release': 5, 'pending': 7, 'confirmed': False, 'replace_ok': True, 'captured': 10, 'refund': 4, 'fee': 3, 'bond': 8, 'closed': False}, [0, 0, 0, 0, 0]), ('zero reservation', {'balance': 100, 'old_hold': 0, 'new_hold': 0, 'other_hold': 0, 'fill_cost': 12, 'release': 5, 'pending': 7, 'confirmed': False, 'replace_ok': True, 'captured': 10, 'refund': 4, 'fee': 3, 'bond': 8, 'closed': False}, [0, 0, 0, 0, 0]), ('closed auction', {'balance': 100, 'old_hold': 30, 'new_hold': 50, 'other_hold': 20, 'fill_cost': 12, 'release': 5, 'pending': 7, 'confirmed': False, 'replace_ok': True, 'captured': 10, 'refund': 4, 'fee': 3, 'bond': 8, 'closed': True}, [18, 36, 54, 72, 90])]
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))['capture-release'], 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 | 18 | 18 | Passed |
| reuse existing collateral | 18 | 18 | Passed |
| other auction limits credit | 18 | 18 | Passed |
| insufficient replacement | 18 | 18 | Passed |
| old hold larger | 18 | 18 | Passed |
| confirmed release | 18 | 18 | Passed |
| fully captured | 0 | 0 | Passed |
| zero reservation | 0 | 0 | Passed |
| closed auction | 18 | 18 | Passed |
SHA-256 / a7f5f0f6a3908e6407a14ae39dcb65cabb1cbe18859af33156eb02a4b3a5d95c
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 2026-09-29T14:46:07.222047+00:00.
Case digest / 7d1d7dad85550b1e7512406a65e2d206f4ad33ffe3c8ace496b50eb415d8d685