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-55101

Stokes linear basis: Feed swap leaves the linear polarization difference in the old basis · case 01

The adapter reports an incorrect swapped q while other fields remain valid.

Astronomical coordinate conventions● Open access↗
FA-55102

Stokes linear basis: Feed swap leaves the linear polarization difference in the old basis · case 02

The adapter reports an incorrect swapped q while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55103

Stokes linear basis: Feed swap leaves the linear polarization difference in the old basis · case 03

The adapter reports an incorrect swapped q while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55104

Stokes linear basis: Feed swap leaves the linear polarization difference in the old basis · case 04

The adapter reports an incorrect swapped q while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55105

Stokes linear basis: Feed swap leaves the linear polarization difference in the old basis · case 05

The adapter reports an incorrect swapped q while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55106

Stokes linear basis: Conjugating the cross-hand product during feed swap is omitted · case 01

The adapter reports an incorrect swapped v while other fields remain valid.

Astronomical coordinate conventions● Open access↗
FA-55107

Stokes linear basis: Conjugating the cross-hand product during feed swap is omitted · case 02

The adapter reports an incorrect swapped v while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55108

Stokes linear basis: Conjugating the cross-hand product during feed swap is omitted · case 03

The adapter reports an incorrect swapped v while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55109

Stokes linear basis: Conjugating the cross-hand product during feed swap is omitted · case 04

The adapter reports an incorrect swapped v while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55110

Stokes linear basis: Conjugating the cross-hand product during feed swap is omitted · case 05

The adapter reports an incorrect swapped v while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55111

Interferometer baseline reversal: Canonical antenna sorting is substituted for an explicit baseline reversal · case 01

The adapter reports an incorrect antennas while other fields remain valid.

Astronomical coordinate conventions● Open access↗
FA-55112

Interferometer baseline reversal: Canonical antenna sorting is substituted for an explicit baseline reversal · case 02

The adapter reports an incorrect antennas while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55113

Interferometer baseline reversal: Canonical antenna sorting is substituted for an explicit baseline reversal · case 03

The adapter reports an incorrect antennas while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55114

Interferometer baseline reversal: Canonical antenna sorting is substituted for an explicit baseline reversal · case 04

The adapter reports an incorrect antennas while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55115

Interferometer baseline reversal: Canonical antenna sorting is substituted for an explicit baseline reversal · case 05

The adapter reports an incorrect antennas while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55116

Interferometer baseline reversal: Baseline reversal leaves the line-of-sight Fourier coordinate unchanged · case 01

The adapter reports an incorrect uvw while other fields remain valid.

Astronomical coordinate conventions● Open access↗
FA-55117

Interferometer baseline reversal: Baseline reversal leaves the line-of-sight Fourier coordinate unchanged · case 02

The adapter reports an incorrect uvw while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55118

Interferometer baseline reversal: Baseline reversal leaves the line-of-sight Fourier coordinate unchanged · case 03

The adapter reports an incorrect uvw while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55119

Interferometer baseline reversal: Baseline reversal leaves the line-of-sight Fourier coordinate unchanged · case 04

The adapter reports an incorrect uvw while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55120

Interferometer baseline reversal: Baseline reversal leaves the line-of-sight Fourier coordinate unchanged · case 05

The adapter reports an incorrect uvw while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55121

Interferometer baseline reversal: Complex baseline conjugation is mistaken for negation · case 01

The adapter reports an incorrect visibility while other fields remain valid.

Astronomical coordinate conventions● Open access↗
FA-55122

Interferometer baseline reversal: Complex baseline conjugation is mistaken for negation · case 02

The adapter reports an incorrect visibility while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55123

Interferometer baseline reversal: Complex baseline conjugation is mistaken for negation · case 03

The adapter reports an incorrect visibility while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55124

Interferometer baseline reversal: Complex baseline conjugation is mistaken for negation · case 04

The adapter reports an incorrect visibility while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55125

Interferometer baseline reversal: Complex baseline conjugation is mistaken for negation · case 05

The adapter reports an incorrect visibility while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55126

Interferometer baseline reversal: Cross-hand reversal handles only one feed ordering · case 01

The adapter reports an incorrect polarization while other fields remain valid.

Astronomical coordinate conventions● Open access↗
FA-55127

Interferometer baseline reversal: Cross-hand reversal handles only one feed ordering · case 02

The adapter reports an incorrect polarization while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55128

Interferometer baseline reversal: Cross-hand reversal handles only one feed ordering · case 03

The adapter reports an incorrect polarization while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55129

Interferometer baseline reversal: Cross-hand reversal handles only one feed ordering · case 04

The adapter reports an incorrect polarization while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55130

Interferometer baseline reversal: Cross-hand reversal handles only one feed ordering · case 05

The adapter reports an incorrect polarization while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55131

Interferometer baseline reversal: Delay metadata retains the original antenna-order convention · case 01

The adapter reports an incorrect geometric delay while other fields remain valid.

Astronomical coordinate conventions● Open access↗
FA-55132

Interferometer baseline reversal: Delay metadata retains the original antenna-order convention · case 02

The adapter reports an incorrect geometric delay while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55133

Interferometer baseline reversal: Delay metadata retains the original antenna-order convention · case 03

The adapter reports an incorrect geometric delay while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55134

Interferometer baseline reversal: Delay metadata retains the original antenna-order convention · case 04

The adapter reports an incorrect geometric delay while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55135

Interferometer baseline reversal: Delay metadata retains the original antenna-order convention · case 05

The adapter reports an incorrect geometric delay while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55136

Interferometer baseline reversal: Antenna phase difference is evaluated before the baseline exchange · case 01

The adapter reports an incorrect phase difference while other fields remain valid.

Astronomical coordinate conventions● Open access↗
FA-55137

Interferometer baseline reversal: Antenna phase difference is evaluated before the baseline exchange · case 02

The adapter reports an incorrect phase difference while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55138

Interferometer baseline reversal: Antenna phase difference is evaluated before the baseline exchange · case 03

The adapter reports an incorrect phase difference while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55139

Interferometer baseline reversal: Antenna phase difference is evaluated before the baseline exchange · case 04

The adapter reports an incorrect phase difference while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55140

Interferometer baseline reversal: Antenna phase difference is evaluated before the baseline exchange · case 05

The adapter reports an incorrect phase difference while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55141

Interferometer channel uvw: Per-channel uvw stays scaled to the reference frequency · case 01

The adapter reports an incorrect channel uvw while other fields remain valid.

Astronomical coordinate conventions● Open access↗
FA-55142

Interferometer channel uvw: Per-channel uvw stays scaled to the reference frequency · case 02

The adapter reports an incorrect channel uvw while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55143

Interferometer channel uvw: Per-channel uvw stays scaled to the reference frequency · case 03

The adapter reports an incorrect channel uvw while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55144

Interferometer channel uvw: Per-channel uvw stays scaled to the reference frequency · case 04

The adapter reports an incorrect channel uvw while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55145

Interferometer channel uvw: Per-channel uvw stays scaled to the reference frequency · case 05

The adapter reports an incorrect channel uvw while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55146

Interferometer channel uvw: Stored wavelength baseline is exported as a physical baseline · case 01

The adapter reports an incorrect physical baseline while other fields remain valid.

Astronomical coordinate conventions● Open access↗
FA-55147

Interferometer channel uvw: Stored wavelength baseline is exported as a physical baseline · case 02

The adapter reports an incorrect physical baseline while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55148

Interferometer channel uvw: Stored wavelength baseline is exported as a physical baseline · case 03

The adapter reports an incorrect physical baseline while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55149

Interferometer channel uvw: Stored wavelength baseline is exported as a physical baseline · case 04

The adapter reports an incorrect physical baseline while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55150

Interferometer channel uvw: Stored wavelength baseline is exported as a physical baseline · case 05

The adapter reports an incorrect physical baseline while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55151

Interferometer channel uvw: Channel fringe phase uses reference-band rather than channel frequency · case 01

The adapter reports an incorrect phase cycles while other fields remain valid.

Astronomical coordinate conventions● Open access↗
FA-55152

Interferometer channel uvw: Channel fringe phase uses reference-band rather than channel frequency · case 02

The adapter reports an incorrect phase cycles while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55153

Interferometer channel uvw: Channel fringe phase uses reference-band rather than channel frequency · case 03

The adapter reports an incorrect phase cycles while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55154

Interferometer channel uvw: Channel fringe phase uses reference-band rather than channel frequency · case 04

The adapter reports an incorrect phase cycles while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55155

Interferometer channel uvw: Channel fringe phase uses reference-band rather than channel frequency · case 05

The adapter reports an incorrect phase cycles while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55156

Interferometer channel uvw: Adjacent channel phase advance uses absolute channel frequency · case 01

The adapter reports an incorrect channel phase step while other fields remain valid.

Astronomical coordinate conventions● Open access↗
FA-55157

Interferometer channel uvw: Adjacent channel phase advance uses absolute channel frequency · case 02

The adapter reports an incorrect channel phase step while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55158

Interferometer channel uvw: Adjacent channel phase advance uses absolute channel frequency · case 03

The adapter reports an incorrect channel phase step while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55159

Interferometer channel uvw: Adjacent channel phase advance uses absolute channel frequency · case 04

The adapter reports an incorrect channel phase step while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55160

Interferometer channel uvw: Adjacent channel phase advance uses absolute channel frequency · case 05

The adapter reports an incorrect channel phase step while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55161

Interferometer channel uvw: A cycle-valued fringe rate receives a second spectral conversion · case 01

The adapter reports an incorrect time phase step while other fields remain valid.

Astronomical coordinate conventions● Open access↗
FA-55162

Interferometer channel uvw: A cycle-valued fringe rate receives a second spectral conversion · case 02

The adapter reports an incorrect time phase step while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55163

Interferometer channel uvw: A cycle-valued fringe rate receives a second spectral conversion · case 03

The adapter reports an incorrect time phase step while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55164

Interferometer channel uvw: A cycle-valued fringe rate receives a second spectral conversion · case 04

The adapter reports an incorrect time phase step while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55165

Interferometer channel uvw: A cycle-valued fringe rate receives a second spectral conversion · case 05

The adapter reports an incorrect time phase step while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55166

Interferometer channel uvw: Frequency derivative of uvw retains the channel frequency factor · case 01

The adapter reports an incorrect frequency jacobian while other fields remain valid.

Astronomical coordinate conventions● Open access↗
FA-55167

Interferometer channel uvw: Frequency derivative of uvw retains the channel frequency factor · case 02

The adapter reports an incorrect frequency jacobian while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55168

Interferometer channel uvw: Frequency derivative of uvw retains the channel frequency factor · case 03

The adapter reports an incorrect frequency jacobian while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55169

Interferometer channel uvw: Frequency derivative of uvw retains the channel frequency factor · case 04

The adapter reports an incorrect frequency jacobian while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55170

Interferometer channel uvw: Frequency derivative of uvw retains the channel frequency factor · case 05

The adapter reports an incorrect frequency jacobian while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55171

Phase center shift: Wide-field phase-center update drops the line-of-sight term · case 01

The adapter reports an incorrect delay cycles while other fields remain valid.

Astronomical coordinate conventions● Open access↗
FA-55172

Phase center shift: Wide-field phase-center update drops the line-of-sight term · case 02

The adapter reports an incorrect delay cycles while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55173

Phase center shift: Wide-field phase-center update drops the line-of-sight term · case 03

The adapter reports an incorrect delay cycles while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55174

Phase center shift: Wide-field phase-center update drops the line-of-sight term · case 04

The adapter reports an incorrect delay cycles while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55175

Phase center shift: Wide-field phase-center update drops the line-of-sight term · case 05

The adapter reports an incorrect delay cycles while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55176

Phase center shift: Phase-center correction uses the forward visibility rather than correction sign · case 01

The adapter reports an incorrect shifted phase while other fields remain valid.

Astronomical coordinate conventions● Open access↗
FA-55177

Phase center shift: Phase-center correction uses the forward visibility rather than correction sign · case 02

The adapter reports an incorrect shifted phase while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55178

Phase center shift: Phase-center correction uses the forward visibility rather than correction sign · case 03

The adapter reports an incorrect shifted phase while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55179

Phase center shift: Phase-center correction uses the forward visibility rather than correction sign · case 04

The adapter reports an incorrect shifted phase while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55180

Phase center shift: Phase-center correction uses the forward visibility rather than correction sign · case 05

The adapter reports an incorrect shifted phase while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55181

Phase center shift: Phase-center tangent longitude is replaced by an offset-only coordinate · case 01

The adapter reports an incorrect reference x while other fields remain valid.

Astronomical coordinate conventions● Open access↗
FA-55182

Phase center shift: Phase-center tangent longitude is replaced by an offset-only coordinate · case 02

The adapter reports an incorrect reference x while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55183

Phase center shift: Phase-center tangent longitude is replaced by an offset-only coordinate · case 03

The adapter reports an incorrect reference x while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55184

Phase center shift: Phase-center tangent longitude is replaced by an offset-only coordinate · case 04

The adapter reports an incorrect reference x while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55185

Phase center shift: Phase-center tangent longitude is replaced by an offset-only coordinate · case 05

The adapter reports an incorrect reference x while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55186

Phase center shift: Phase-center tangent latitude uses longitude displacement · case 01

The adapter reports an incorrect reference y while other fields remain valid.

Astronomical coordinate conventions● Open access↗
FA-55187

Phase center shift: Phase-center tangent latitude uses longitude displacement · case 02

The adapter reports an incorrect reference y while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55188

Phase center shift: Phase-center tangent latitude uses longitude displacement · case 03

The adapter reports an incorrect reference y while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55189

Phase center shift: Phase-center tangent latitude uses longitude displacement · case 04

The adapter reports an incorrect reference y while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55190

Phase center shift: Phase-center tangent latitude uses longitude displacement · case 05

The adapter reports an incorrect reference y while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55191

Phase center shift: Undoing a phase-center shift retains the forward delay convention · case 01

The adapter reports an incorrect inverse delay while other fields remain valid.

Astronomical coordinate conventions● Open access↗
FA-55192

Phase center shift: Undoing a phase-center shift retains the forward delay convention · case 02

The adapter reports an incorrect inverse delay while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55193

Phase center shift: Undoing a phase-center shift retains the forward delay convention · case 03

The adapter reports an incorrect inverse delay while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55194

Phase center shift: Undoing a phase-center shift retains the forward delay convention · case 04

The adapter reports an incorrect inverse delay while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55195

Phase center shift: Undoing a phase-center shift retains the forward delay convention · case 05

The adapter reports an incorrect inverse delay while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55196

Phase center shift: A stored n-minus-one direction term is emitted as n itself · case 01

The adapter reports an incorrect line of sight direction while other fields remain valid.

Astronomical coordinate conventions● Open access↗
FA-55197

Phase center shift: A stored n-minus-one direction term is emitted as n itself · case 02

The adapter reports an incorrect line of sight direction while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55198

Phase center shift: A stored n-minus-one direction term is emitted as n itself · case 03

The adapter reports an incorrect line of sight direction while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55199

Phase center shift: A stored n-minus-one direction term is emitted as n itself · case 04

The adapter reports an incorrect line of sight direction while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55200

Phase center shift: A stored n-minus-one direction term is emitted as n itself · case 05

The adapter reports an incorrect line of sight direction while other fields remain valid.

Astronomical coordinate conventions◈ 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 ↗