FAILURE MAP

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 ↗
100840Executable case variants
20168Distinct failure mechanisms
302520Executed implementations
20168Open-access cases

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

Python · Standard library
REFERENCEFAILURE MECHANISMDOMAINACCESS
FA-15501

Hensel simple root lift: lift correction residue · case 01

The exact hensel simple root lift result violates the stated contract at lift correction residue.

Numerics● Open access↗
FA-15502

Hensel simple root lift: lift correction residue · case 02

The exact hensel simple root lift result violates the stated contract at lift correction residue.

Numerics◈ Members↗
FA-15503

Hensel simple root lift: lift correction residue · case 03

The exact hensel simple root lift result violates the stated contract at lift correction residue.

Numerics◈ Members↗
FA-15504

Hensel simple root lift: lift correction residue · case 04

The exact hensel simple root lift result violates the stated contract at lift correction residue.

Numerics◈ Members↗
FA-15505

Hensel simple root lift: lift correction residue · case 05

The exact hensel simple root lift result violates the stated contract at lift correction residue.

Numerics◈ Members↗
FA-15506

Hensel simple root lift: root digit extension · case 01

The exact hensel simple root lift result violates the stated contract at root digit extension.

Numerics● Open access↗
FA-15507

Hensel simple root lift: root digit extension · case 02

The exact hensel simple root lift result violates the stated contract at root digit extension.

Numerics◈ Members↗
FA-15508

Hensel simple root lift: root digit extension · case 03

The exact hensel simple root lift result violates the stated contract at root digit extension.

Numerics◈ Members↗
FA-15509

Hensel simple root lift: root digit extension · case 04

The exact hensel simple root lift result violates the stated contract at root digit extension.

Numerics◈ Members↗
FA-15510

Hensel simple root lift: root digit extension · case 05

The exact hensel simple root lift result violates the stated contract at root digit extension.

Numerics◈ Members↗
FA-15511

Hensel simple root lift: precision modulus growth · case 01

The exact hensel simple root lift result violates the stated contract at precision modulus growth.

Numerics● Open access↗
FA-15512

Hensel simple root lift: precision modulus growth · case 02

The exact hensel simple root lift result violates the stated contract at precision modulus growth.

Numerics◈ Members↗
FA-15513

Hensel simple root lift: precision modulus growth · case 03

The exact hensel simple root lift result violates the stated contract at precision modulus growth.

Numerics◈ Members↗
FA-15514

Hensel simple root lift: precision modulus growth · case 04

The exact hensel simple root lift result violates the stated contract at precision modulus growth.

Numerics◈ Members↗
FA-15515

Hensel simple root lift: precision modulus growth · case 05

The exact hensel simple root lift result violates the stated contract at precision modulus growth.

Numerics◈ Members↗
FA-15516

Lucas binomial residue: digit product identity · case 01

The exact lucas binomial residue result violates the stated contract at digit product identity.

Numerics● Open access↗
FA-15517

Lucas binomial residue: digit product identity · case 02

The exact lucas binomial residue result violates the stated contract at digit product identity.

Numerics◈ Members↗
FA-15518

Lucas binomial residue: digit product identity · case 03

The exact lucas binomial residue result violates the stated contract at digit product identity.

Numerics◈ Members↗
FA-15519

Lucas binomial residue: digit product identity · case 04

The exact lucas binomial residue result violates the stated contract at digit product identity.

Numerics◈ Members↗
FA-15520

Lucas binomial residue: digit product identity · case 05

The exact lucas binomial residue result violates the stated contract at digit product identity.

Numerics◈ Members↗
FA-15521

Lucas binomial residue: remaining digit termination · case 01

The exact lucas binomial residue result violates the stated contract at remaining digit termination.

Numerics● Open access↗
FA-15522

Lucas binomial residue: remaining digit termination · case 02

The exact lucas binomial residue result violates the stated contract at remaining digit termination.

Numerics◈ Members↗
FA-15523

Lucas binomial residue: remaining digit termination · case 03

The exact lucas binomial residue result violates the stated contract at remaining digit termination.

Numerics◈ Members↗
FA-15524

Lucas binomial residue: remaining digit termination · case 04

The exact lucas binomial residue result violates the stated contract at remaining digit termination.

Numerics◈ Members↗
FA-15525

Lucas binomial residue: remaining digit termination · case 05

The exact lucas binomial residue result violates the stated contract at remaining digit termination.

Numerics◈ Members↗
FA-15526

Lucas binomial residue: digit carry zero criterion · case 01

The exact lucas binomial residue result violates the stated contract at digit carry zero criterion.

Numerics● Open access↗
FA-15527

Lucas binomial residue: digit carry zero criterion · case 02

The exact lucas binomial residue result violates the stated contract at digit carry zero criterion.

Numerics◈ Members↗
FA-15528

Lucas binomial residue: digit carry zero criterion · case 03

The exact lucas binomial residue result violates the stated contract at digit carry zero criterion.

Numerics◈ Members↗
FA-15529

Lucas binomial residue: digit carry zero criterion · case 04

The exact lucas binomial residue result violates the stated contract at digit carry zero criterion.

Numerics◈ Members↗
FA-15530

Lucas binomial residue: digit carry zero criterion · case 05

The exact lucas binomial residue result violates the stated contract at digit carry zero criterion.

Numerics◈ Members↗
FA-15531

Lucas binomial residue: digit binomial multiplication · case 01

The exact lucas binomial residue result violates the stated contract at digit binomial multiplication.

Numerics● Open access↗
FA-15532

Lucas binomial residue: digit binomial multiplication · case 02

The exact lucas binomial residue result violates the stated contract at digit binomial multiplication.

Numerics◈ Members↗
FA-15533

Lucas binomial residue: digit binomial multiplication · case 03

The exact lucas binomial residue result violates the stated contract at digit binomial multiplication.

Numerics◈ Members↗
FA-15534

Lucas binomial residue: digit binomial multiplication · case 04

The exact lucas binomial residue result violates the stated contract at digit binomial multiplication.

Numerics◈ Members↗
FA-15535

Lucas binomial residue: digit binomial multiplication · case 05

The exact lucas binomial residue result violates the stated contract at digit binomial multiplication.

Numerics◈ Members↗
FA-15536

Lucas binomial residue: base prime digit shift · case 01

The exact lucas binomial residue result violates the stated contract at base prime digit shift.

Numerics● Open access↗
FA-15537

Lucas binomial residue: base prime digit shift · case 02

The exact lucas binomial residue result violates the stated contract at base prime digit shift.

Numerics◈ Members↗
FA-15538

Lucas binomial residue: base prime digit shift · case 03

The exact lucas binomial residue result violates the stated contract at base prime digit shift.

Numerics◈ Members↗
FA-15539

Lucas binomial residue: base prime digit shift · case 04

The exact lucas binomial residue result violates the stated contract at base prime digit shift.

Numerics◈ Members↗
FA-15540

Lucas binomial residue: base prime digit shift · case 05

The exact lucas binomial residue result violates the stated contract at base prime digit shift.

Numerics◈ Members↗
FA-15541

Kummer binomial valuation: first addend selection · case 01

The exact kummer binomial valuation result violates the stated contract at first addend selection.

Numerics● Open access↗
FA-15542

Kummer binomial valuation: first addend selection · case 02

The exact kummer binomial valuation result violates the stated contract at first addend selection.

Numerics◈ Members↗
FA-15543

Kummer binomial valuation: first addend selection · case 03

The exact kummer binomial valuation result violates the stated contract at first addend selection.

Numerics◈ Members↗
FA-15544

Kummer binomial valuation: first addend selection · case 04

The exact kummer binomial valuation result violates the stated contract at first addend selection.

Numerics◈ Members↗
FA-15545

Kummer binomial valuation: first addend selection · case 05

The exact kummer binomial valuation result violates the stated contract at first addend selection.

Numerics◈ Members↗
FA-15546

Kummer binomial valuation: carry propagation termination · case 01

The exact kummer binomial valuation result violates the stated contract at carry propagation termination.

Numerics● Open access↗
FA-15547

Kummer binomial valuation: carry propagation termination · case 02

The exact kummer binomial valuation result violates the stated contract at carry propagation termination.

Numerics◈ Members↗
FA-15548

Kummer binomial valuation: carry propagation termination · case 03

The exact kummer binomial valuation result violates the stated contract at carry propagation termination.

Numerics◈ Members↗
FA-15549

Kummer binomial valuation: carry propagation termination · case 04

The exact kummer binomial valuation result violates the stated contract at carry propagation termination.

Numerics◈ Members↗
FA-15550

Kummer binomial valuation: carry propagation termination · case 05

The exact kummer binomial valuation result violates the stated contract at carry propagation termination.

Numerics◈ Members↗
FA-15551

Kummer binomial valuation: incoming carry inclusion · case 01

The exact kummer binomial valuation result violates the stated contract at incoming carry inclusion.

Numerics● Open access↗
FA-15552

Kummer binomial valuation: incoming carry inclusion · case 02

The exact kummer binomial valuation result violates the stated contract at incoming carry inclusion.

Numerics◈ Members↗
FA-15553

Kummer binomial valuation: incoming carry inclusion · case 03

The exact kummer binomial valuation result violates the stated contract at incoming carry inclusion.

Numerics◈ Members↗
FA-15554

Kummer binomial valuation: incoming carry inclusion · case 04

The exact kummer binomial valuation result violates the stated contract at incoming carry inclusion.

Numerics◈ Members↗
FA-15555

Kummer binomial valuation: incoming carry inclusion · case 05

The exact kummer binomial valuation result violates the stated contract at incoming carry inclusion.

Numerics◈ Members↗
FA-15556

Kummer binomial valuation: digit overflow carry · case 01

The exact kummer binomial valuation result violates the stated contract at digit overflow carry.

Numerics● Open access↗
FA-15557

Kummer binomial valuation: digit overflow carry · case 02

The exact kummer binomial valuation result violates the stated contract at digit overflow carry.

Numerics◈ Members↗
FA-15558

Kummer binomial valuation: digit overflow carry · case 03

The exact kummer binomial valuation result violates the stated contract at digit overflow carry.

Numerics◈ Members↗
FA-15559

Kummer binomial valuation: digit overflow carry · case 04

The exact kummer binomial valuation result violates the stated contract at digit overflow carry.

Numerics◈ Members↗
FA-15560

Kummer binomial valuation: digit overflow carry · case 05

The exact kummer binomial valuation result violates the stated contract at digit overflow carry.

Numerics◈ Members↗
FA-15561

Kummer binomial valuation: next prime digits · case 01

The exact kummer binomial valuation result violates the stated contract at next prime digits.

Numerics● Open access↗
FA-15562

Kummer binomial valuation: next prime digits · case 02

The exact kummer binomial valuation result violates the stated contract at next prime digits.

Numerics◈ Members↗
FA-15563

Kummer binomial valuation: next prime digits · case 03

The exact kummer binomial valuation result violates the stated contract at next prime digits.

Numerics◈ Members↗
FA-15564

Kummer binomial valuation: next prime digits · case 04

The exact kummer binomial valuation result violates the stated contract at next prime digits.

Numerics◈ Members↗
FA-15565

Kummer binomial valuation: next prime digits · case 05

The exact kummer binomial valuation result violates the stated contract at next prime digits.

Numerics◈ Members↗
FA-15566

Prime power unit factorial: prime power ring modulus · case 01

The exact prime power unit factorial result violates the stated contract at prime power ring modulus.

Numerics● Open access↗
FA-15567

Prime power unit factorial: prime power ring modulus · case 02

The exact prime power unit factorial result violates the stated contract at prime power ring modulus.

Numerics◈ Members↗
FA-15568

Prime power unit factorial: prime power ring modulus · case 03

The exact prime power unit factorial result violates the stated contract at prime power ring modulus.

Numerics◈ Members↗
FA-15569

Prime power unit factorial: prime power ring modulus · case 04

The exact prime power unit factorial result violates the stated contract at prime power ring modulus.

Numerics◈ Members↗
FA-15570

Prime power unit factorial: prime power ring modulus · case 05

The exact prime power unit factorial result violates the stated contract at prime power ring modulus.

Numerics◈ Members↗
FA-15571

Prime power unit factorial: unit factorial identity · case 01

The exact prime power unit factorial result violates the stated contract at unit factorial identity.

Numerics● Open access↗
FA-15572

Prime power unit factorial: unit factorial identity · case 02

The exact prime power unit factorial result violates the stated contract at unit factorial identity.

Numerics◈ Members↗
FA-15573

Prime power unit factorial: unit factorial identity · case 03

The exact prime power unit factorial result violates the stated contract at unit factorial identity.

Numerics◈ Members↗
FA-15574

Prime power unit factorial: unit factorial identity · case 04

The exact prime power unit factorial result violates the stated contract at unit factorial identity.

Numerics◈ Members↗
FA-15575

Prime power unit factorial: unit factorial identity · case 05

The exact prime power unit factorial result violates the stated contract at unit factorial identity.

Numerics◈ Members↗
FA-15576

Prime power unit factorial: factorial factor coverage · case 01

The exact prime power unit factorial result violates the stated contract at factorial factor coverage.

Numerics● Open access↗
FA-15577

Prime power unit factorial: factorial factor coverage · case 02

The exact prime power unit factorial result violates the stated contract at factorial factor coverage.

Numerics◈ Members↗
FA-15578

Prime power unit factorial: factorial factor coverage · case 03

The exact prime power unit factorial result violates the stated contract at factorial factor coverage.

Numerics◈ Members↗
FA-15579

Prime power unit factorial: factorial factor coverage · case 04

The exact prime power unit factorial result violates the stated contract at factorial factor coverage.

Numerics◈ Members↗
FA-15580

Prime power unit factorial: factorial factor coverage · case 05

The exact prime power unit factorial result violates the stated contract at factorial factor coverage.

Numerics◈ Members↗
FA-15581

Prime power unit factorial: all prime factor stripping · case 01

The exact prime power unit factorial result violates the stated contract at all prime factor stripping.

Numerics● Open access↗
FA-15582

Prime power unit factorial: all prime factor stripping · case 02

The exact prime power unit factorial result violates the stated contract at all prime factor stripping.

Numerics◈ Members↗
FA-15583

Prime power unit factorial: all prime factor stripping · case 03

The exact prime power unit factorial result violates the stated contract at all prime factor stripping.

Numerics◈ Members↗
FA-15584

Prime power unit factorial: all prime factor stripping · case 04

The exact prime power unit factorial result violates the stated contract at all prime factor stripping.

Numerics◈ Members↗
FA-15585

Prime power unit factorial: all prime factor stripping · case 05

The exact prime power unit factorial result violates the stated contract at all prime factor stripping.

Numerics◈ Members↗
FA-15586

Prime power unit factorial: unit factor multiplication · case 01

The exact prime power unit factorial result violates the stated contract at unit factor multiplication.

Numerics● Open access↗
FA-15587

Prime power unit factorial: unit factor multiplication · case 02

The exact prime power unit factorial result violates the stated contract at unit factor multiplication.

Numerics◈ Members↗
FA-15588

Prime power unit factorial: unit factor multiplication · case 03

The exact prime power unit factorial result violates the stated contract at unit factor multiplication.

Numerics◈ Members↗
FA-15589

Prime power unit factorial: unit factor multiplication · case 04

The exact prime power unit factorial result violates the stated contract at unit factor multiplication.

Numerics◈ Members↗
FA-15590

Prime power unit factorial: unit factor multiplication · case 05

The exact prime power unit factorial result violates the stated contract at unit factor multiplication.

Numerics◈ Members↗
FA-15591

Gf2 field multiplication: multiplier coefficient test · case 01

The exact gf2 field multiplication result violates the stated contract at multiplier coefficient test.

Numerics● Open access↗
FA-15592

Gf2 field multiplication: multiplier coefficient test · case 02

The exact gf2 field multiplication result violates the stated contract at multiplier coefficient test.

Numerics◈ Members↗
FA-15593

Gf2 field multiplication: multiplier coefficient test · case 03

The exact gf2 field multiplication result violates the stated contract at multiplier coefficient test.

Numerics◈ Members↗
FA-15594

Gf2 field multiplication: multiplier coefficient test · case 04

The exact gf2 field multiplication result violates the stated contract at multiplier coefficient test.

Numerics◈ Members↗
FA-15595

Gf2 field multiplication: multiplier coefficient test · case 05

The exact gf2 field multiplication result violates the stated contract at multiplier coefficient test.

Numerics◈ Members↗
FA-15596

Gf2 field multiplication: field addition operation · case 01

The exact gf2 field multiplication result violates the stated contract at field addition operation.

Numerics● Open access↗
FA-15597

Gf2 field multiplication: field addition operation · case 02

The exact gf2 field multiplication result violates the stated contract at field addition operation.

Numerics◈ Members↗
FA-15598

Gf2 field multiplication: field addition operation · case 03

The exact gf2 field multiplication result violates the stated contract at field addition operation.

Numerics◈ Members↗
FA-15599

Gf2 field multiplication: field addition operation · case 04

The exact gf2 field multiplication result violates the stated contract at field addition operation.

Numerics◈ Members↗
FA-15600

Gf2 field multiplication: field addition operation · case 05

The exact gf2 field multiplication result violates the stated contract at field addition operation.

Numerics◈ Members↗

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 ↗