Understand the failure.
Verify the repair.
Small, reproducible software failures. The broken implementation, the fix that didn’t work, and the one that passed—preserved together.
Explore the cases ↓How results are verified ↗WHAT THE ARCHIVE CONTAINS
100840 executable cases. 20168 are open.
Every case records the implementation that fails, the fix that did not work, and the repair that passed its checks—with recorded outputs and source hashes. This release adds 100840 cases across 20168 failure mechanisms and 254 domains.
The open tier gives you the failure and the unsuccessful fix for one case in every mechanism. The remaining 80672 cases, 5 variants per mechanism, are member-only: the verified repair, its recorded checks, and the full fixture suite are held in the member archive. Read the methodology ↗
A RECORD OF WHAT WENT WRONG
Browse the archive / 100840
Limitations period with discovery accrual, tolling and repose cap: repose cap · case 01
Tolling extends a claim beyond the statute of repose.
Limitations period with discovery accrual, tolling and repose cap: repose cap · case 02
Tolling extends a claim beyond the statute of repose.
Limitations period with discovery accrual, tolling and repose cap: repose cap · case 03
Tolling extends a claim beyond the statute of repose.
Limitations period with discovery accrual, tolling and repose cap: repose cap · case 04
Tolling extends a claim beyond the statute of repose.
Limitations period with discovery accrual, tolling and repose cap: repose cap · case 05
Tolling extends a claim beyond the statute of repose.
Notice-of-appeal deadline with tolling post-judgment motions: party period · case 01
A case involving a federal agency gets only 30 days.
Notice-of-appeal deadline with tolling post-judgment motions: party period · case 02
A case involving a federal agency gets only 30 days.
Notice-of-appeal deadline with tolling post-judgment motions: party period · case 03
A case involving a federal agency gets only 30 days.
Notice-of-appeal deadline with tolling post-judgment motions: party period · case 04
A case involving a federal agency gets only 30 days.
Notice-of-appeal deadline with tolling post-judgment motions: party period · case 05
A case involving a federal agency gets only 30 days.
Notice-of-appeal deadline with tolling post-judgment motions: motion timeliness · case 01
A motion filed on the 28th day is treated as untimely and does not toll.
Notice-of-appeal deadline with tolling post-judgment motions: motion timeliness · case 02
A motion filed on the 28th day is treated as untimely and does not toll.
Notice-of-appeal deadline with tolling post-judgment motions: motion timeliness · case 03
A motion filed on the 28th day is treated as untimely and does not toll.
Notice-of-appeal deadline with tolling post-judgment motions: motion timeliness · case 04
A motion filed on the 28th day is treated as untimely and does not toll.
Notice-of-appeal deadline with tolling post-judgment motions: motion timeliness · case 05
A motion filed on the 28th day is treated as untimely and does not toll.
Notice-of-appeal deadline with tolling post-judgment motions: latest disposition · case 01
When motions are listed out of order, the period runs from an earlier disposition.
Notice-of-appeal deadline with tolling post-judgment motions: latest disposition · case 02
When motions are listed out of order, the period runs from an earlier disposition.
Notice-of-appeal deadline with tolling post-judgment motions: latest disposition · case 03
When motions are listed out of order, the period runs from an earlier disposition.
Notice-of-appeal deadline with tolling post-judgment motions: latest disposition · case 04
When motions are listed out of order, the period runs from an earlier disposition.
Notice-of-appeal deadline with tolling post-judgment motions: latest disposition · case 05
When motions are listed out of order, the period runs from an earlier disposition.
Notice-of-appeal deadline with tolling post-judgment motions: pending check · case 01
An undisposed tolling motion is ignored once another motion has been decided.
Notice-of-appeal deadline with tolling post-judgment motions: pending check · case 02
An undisposed tolling motion is ignored once another motion has been decided.
Notice-of-appeal deadline with tolling post-judgment motions: pending check · case 03
An undisposed tolling motion is ignored once another motion has been decided.
Notice-of-appeal deadline with tolling post-judgment motions: pending check · case 04
An undisposed tolling motion is ignored once another motion has been decided.
Notice-of-appeal deadline with tolling post-judgment motions: pending check · case 05
An undisposed tolling motion is ignored once another motion has been decided.
Notice-of-appeal deadline with tolling post-judgment motions: roll holidays · case 01
An appeal deadline landing on a holiday is not extended.
Notice-of-appeal deadline with tolling post-judgment motions: roll holidays · case 02
An appeal deadline landing on a holiday is not extended.
Notice-of-appeal deadline with tolling post-judgment motions: roll holidays · case 03
An appeal deadline landing on a holiday is not extended.
Notice-of-appeal deadline with tolling post-judgment motions: roll holidays · case 04
An appeal deadline landing on a holiday is not extended.
Notice-of-appeal deadline with tolling post-judgment motions: roll holidays · case 05
An appeal deadline landing on a holiday is not extended.
Answer deadline after personal service or waiver of service: waiver base · case 01
The waiver answer deadline is computed from the date the waiver was filed rather than when the request was sent.
Answer deadline after personal service or waiver of service: waiver base · case 02
The waiver answer deadline is computed from the date the waiver was filed rather than when the request was sent.
Answer deadline after personal service or waiver of service: waiver base · case 03
The waiver answer deadline is computed from the date the waiver was filed rather than when the request was sent.
Answer deadline after personal service or waiver of service: waiver base · case 04
The waiver answer deadline is computed from the date the waiver was filed rather than when the request was sent.
Answer deadline after personal service or waiver of service: waiver base · case 05
The waiver answer deadline is computed from the date the waiver was filed rather than when the request was sent.
Answer deadline after personal service or waiver of service: waiver period · case 01
A defendant abroad who waived service gets 60 days instead of 90.
Answer deadline after personal service or waiver of service: waiver period · case 02
A defendant abroad who waived service gets 60 days instead of 90.
Answer deadline after personal service or waiver of service: waiver period · case 03
A defendant abroad who waived service gets 60 days instead of 90.
Answer deadline after personal service or waiver of service: waiver period · case 04
A defendant abroad who waived service gets 60 days instead of 90.
Answer deadline after personal service or waiver of service: waiver period · case 05
A defendant abroad who waived service gets 60 days instead of 90.
Answer deadline after personal service or waiver of service: government period · case 01
A federal officer served personally is given only 21 days to answer.
Answer deadline after personal service or waiver of service: government period · case 02
A federal officer served personally is given only 21 days to answer.
Answer deadline after personal service or waiver of service: government period · case 03
A federal officer served personally is given only 21 days to answer.
Answer deadline after personal service or waiver of service: government period · case 04
A federal officer served personally is given only 21 days to answer.
Answer deadline after personal service or waiver of service: government period · case 05
A federal officer served personally is given only 21 days to answer.
Answer deadline after personal service or waiver of service: waiver roll · case 01
A waiver answer deadline falling on a Sunday is not extended.
Answer deadline after personal service or waiver of service: waiver roll · case 02
A waiver answer deadline falling on a Sunday is not extended.
Answer deadline after personal service or waiver of service: waiver roll · case 03
A waiver answer deadline falling on a Sunday is not extended.
Answer deadline after personal service or waiver of service: waiver roll · case 04
A waiver answer deadline falling on a Sunday is not extended.
Answer deadline after personal service or waiver of service: waiver roll · case 05
A waiver answer deadline falling on a Sunday is not extended.
Earliest hearing date after court-day notice plus mailing days: service day exclusion · case 01
Serving on a court day lets the service day count toward the notice, allowing a hearing a day early.
Earliest hearing date after court-day notice plus mailing days: service day exclusion · case 02
Serving on a court day lets the service day count toward the notice, allowing a hearing a day early.
Earliest hearing date after court-day notice plus mailing days: service day exclusion · case 03
Serving on a court day lets the service day count toward the notice, allowing a hearing a day early.
Earliest hearing date after court-day notice plus mailing days: service day exclusion · case 04
Serving on a court day lets the service day count toward the notice, allowing a hearing a day early.
Earliest hearing date after court-day notice plus mailing days: service day exclusion · case 05
Serving on a court day lets the service day count toward the notice, allowing a hearing a day early.
Earliest hearing date after court-day notice plus mailing days: court day test · case 01
A holiday inside the notice period is counted as a court day.
Earliest hearing date after court-day notice plus mailing days: court day test · case 02
A holiday inside the notice period is counted as a court day.
Earliest hearing date after court-day notice plus mailing days: court day test · case 03
A holiday inside the notice period is counted as a court day.
Earliest hearing date after court-day notice plus mailing days: court day test · case 04
A holiday inside the notice period is counted as a court day.
Earliest hearing date after court-day notice plus mailing days: court day test · case 05
A holiday inside the notice period is counted as a court day.
Earliest hearing date after court-day notice plus mailing days: mail days · case 01
Out-of-state mail service gets only 5 extra days.
Earliest hearing date after court-day notice plus mailing days: mail days · case 02
Out-of-state mail service gets only 5 extra days.
Earliest hearing date after court-day notice plus mailing days: mail days · case 03
Out-of-state mail service gets only 5 extra days.
Earliest hearing date after court-day notice plus mailing days: mail days · case 04
Out-of-state mail service gets only 5 extra days.
Earliest hearing date after court-day notice plus mailing days: mail days · case 05
Out-of-state mail service gets only 5 extra days.
Earliest hearing date after court-day notice plus mailing days: final roll · case 01
The earliest hearing is scheduled on a court holiday.
Earliest hearing date after court-day notice plus mailing days: final roll · case 02
The earliest hearing is scheduled on a court holiday.
Earliest hearing date after court-day notice plus mailing days: final roll · case 03
The earliest hearing is scheduled on a court holiday.
Earliest hearing date after court-day notice plus mailing days: final roll · case 04
The earliest hearing is scheduled on a court holiday.
Earliest hearing date after court-day notice plus mailing days: final roll · case 05
The earliest hearing is scheduled on a court holiday.
Regulatory review clock with stop-clock pauses: open ended min · case 01
With two open-ended stops, the review is reported as expiring although an earlier stop froze it.
Regulatory review clock with stop-clock pauses: open ended min · case 02
With two open-ended stops, the review is reported as expiring although an earlier stop froze it.
Regulatory review clock with stop-clock pauses: open ended min · case 03
With two open-ended stops, the review is reported as expiring although an earlier stop froze it.
Regulatory review clock with stop-clock pauses: open ended min · case 04
With two open-ended stops, the review is reported as expiring although an earlier stop froze it.
Regulatory review clock with stop-clock pauses: open ended min · case 05
With two open-ended stops, the review is reported as expiring although an earlier stop froze it.
Regulatory review clock with stop-clock pauses: pause length · case 01
The clock loses a day for every pause because the resume day is not counted.
Regulatory review clock with stop-clock pauses: pause length · case 02
The clock loses a day for every pause because the resume day is not counted.
Regulatory review clock with stop-clock pauses: pause length · case 03
The clock loses a day for every pause because the resume day is not counted.
Regulatory review clock with stop-clock pauses: pause length · case 04
The clock loses a day for every pause because the resume day is not counted.
Regulatory review clock with stop-clock pauses: pause length · case 05
The clock loses a day for every pause because the resume day is not counted.
Regulatory review clock with stop-clock pauses: start exclusion · case 01
The review expires a day early because the submission day is counted.
Regulatory review clock with stop-clock pauses: start exclusion · case 02
The review expires a day early because the submission day is counted.
Regulatory review clock with stop-clock pauses: start exclusion · case 03
The review expires a day early because the submission day is counted.
Regulatory review clock with stop-clock pauses: start exclusion · case 04
The review expires a day early because the submission day is counted.
Regulatory review clock with stop-clock pauses: start exclusion · case 05
The review expires a day early because the submission day is counted.
Regulatory review clock with stop-clock pauses: open ended test · case 01
A review whose last clock day coincides with an open-ended stop is reported as expired on that day.
Regulatory review clock with stop-clock pauses: open ended test · case 02
A review whose last clock day coincides with an open-ended stop is reported as expired on that day.
Regulatory review clock with stop-clock pauses: open ended test · case 03
A review whose last clock day coincides with an open-ended stop is reported as expired on that day.
Regulatory review clock with stop-clock pauses: open ended test · case 04
A review whose last clock day coincides with an open-ended stop is reported as expired on that day.
Regulatory review clock with stop-clock pauses: open ended test · case 05
A review whose last clock day coincides with an open-ended stop is reported as expired on that day.
Quarterly and annual report due dates for a fiscal year: quarter period · case 01
A non-accelerated filer is told its quarterly report is due five days early.
Quarterly and annual report due dates for a fiscal year: quarter period · case 02
A non-accelerated filer is told its quarterly report is due five days early.
Quarterly and annual report due dates for a fiscal year: quarter period · case 03
A non-accelerated filer is told its quarterly report is due five days early.
Quarterly and annual report due dates for a fiscal year: quarter period · case 04
A non-accelerated filer is told its quarterly report is due five days early.
Quarterly and annual report due dates for a fiscal year: quarter period · case 05
A non-accelerated filer is told its quarterly report is due five days early.
Quarterly and annual report due dates for a fiscal year: annual period · case 01
An accelerated filer's annual report is computed with the large-filer period.
Quarterly and annual report due dates for a fiscal year: annual period · case 02
An accelerated filer's annual report is computed with the large-filer period.
Quarterly and annual report due dates for a fiscal year: annual period · case 03
An accelerated filer's annual report is computed with the large-filer period.
Quarterly and annual report due dates for a fiscal year: annual period · case 04
An accelerated filer's annual report is computed with the large-filer period.
Quarterly and annual report due dates for a fiscal year: annual period · case 05
An accelerated filer's annual report is computed with the large-filer period.
INSPECTABLE BY DESIGN
Every result has a runnable source.
Runnable implementations with recorded outputs, source hashes, and explicit contracts. Related variants share a failure mechanism and belong together in evaluation splits.
Read the methodology ↗