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-56001

Barycentric arrival corrections: Inverse arrival-time adapter removes only geometric delay · case 01

The adapter reports an incorrect observer arrival while other fields remain valid.

Astronomical coordinate conventions● Open access↗
FA-56002

Barycentric arrival corrections: Inverse arrival-time adapter removes only geometric delay · case 02

The adapter reports an incorrect observer arrival while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-56003

Barycentric arrival corrections: Inverse arrival-time adapter removes only geometric delay · case 03

The adapter reports an incorrect observer arrival while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-56004

Barycentric arrival corrections: Inverse arrival-time adapter removes only geometric delay · case 04

The adapter reports an incorrect observer arrival while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-56005

Barycentric arrival corrections: Inverse arrival-time adapter removes only geometric delay · case 05

The adapter reports an incorrect observer arrival while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-56006

Barycentric arrival corrections: Observer-position timing Jacobian is replaced by the total geometric delay · case 01

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

Astronomical coordinate conventions● Open access↗
FA-56007

Barycentric arrival corrections: Observer-position timing Jacobian is replaced by the total geometric delay · case 02

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

Astronomical coordinate conventions◈ Members↗
FA-56008

Barycentric arrival corrections: Observer-position timing Jacobian is replaced by the total geometric delay · case 03

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

Astronomical coordinate conventions◈ Members↗
FA-56009

Barycentric arrival corrections: Observer-position timing Jacobian is replaced by the total geometric delay · case 04

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

Astronomical coordinate conventions◈ Members↗
FA-56010

Barycentric arrival corrections: Observer-position timing Jacobian is replaced by the total geometric delay · case 05

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

Astronomical coordinate conventions◈ Members↗
FA-56011

Pulsar phase polynomial: Pulsar spin derivatives are integrated without their factorial coefficients · case 01

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

Astronomical coordinate conventions● Open access↗
FA-56012

Pulsar phase polynomial: Pulsar spin derivatives are integrated without their factorial coefficients · case 02

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

Astronomical coordinate conventions◈ Members↗
FA-56013

Pulsar phase polynomial: Pulsar spin derivatives are integrated without their factorial coefficients · case 03

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

Astronomical coordinate conventions◈ Members↗
FA-56014

Pulsar phase polynomial: Pulsar spin derivatives are integrated without their factorial coefficients · case 04

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

Astronomical coordinate conventions◈ Members↗
FA-56015

Pulsar phase polynomial: Pulsar spin derivatives are integrated without their factorial coefficients · case 05

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

Astronomical coordinate conventions◈ Members↗
FA-56016

Pulsar phase polynomial: Instantaneous pulsar frequency is evaluated using phase polynomial coefficients · case 01

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

Astronomical coordinate conventions● Open access↗
FA-56017

Pulsar phase polynomial: Instantaneous pulsar frequency is evaluated using phase polynomial coefficients · case 02

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

Astronomical coordinate conventions◈ Members↗
FA-56018

Pulsar phase polynomial: Instantaneous pulsar frequency is evaluated using phase polynomial coefficients · case 03

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

Astronomical coordinate conventions◈ Members↗
FA-56019

Pulsar phase polynomial: Instantaneous pulsar frequency is evaluated using phase polynomial coefficients · case 04

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

Astronomical coordinate conventions◈ Members↗
FA-56020

Pulsar phase polynomial: Instantaneous pulsar frequency is evaluated using phase polynomial coefficients · case 05

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

Astronomical coordinate conventions◈ Members↗
FA-56021

Pulsar phase polynomial: Pulsar frequency derivative retains the wrong epoch power · case 01

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

Astronomical coordinate conventions● Open access↗
FA-56022

Pulsar phase polynomial: Pulsar frequency derivative retains the wrong epoch power · case 02

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

Astronomical coordinate conventions◈ Members↗
FA-56023

Pulsar phase polynomial: Pulsar frequency derivative retains the wrong epoch power · case 03

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

Astronomical coordinate conventions◈ Members↗
FA-56024

Pulsar phase polynomial: Pulsar frequency derivative retains the wrong epoch power · case 04

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

Astronomical coordinate conventions◈ Members↗
FA-56025

Pulsar phase polynomial: Pulsar frequency derivative retains the wrong epoch power · case 05

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

Astronomical coordinate conventions◈ Members↗
FA-56026

Pulsar phase polynomial: Pre-reference pulsar pulse numbering truncates negative total phase · case 01

The adapter reports an incorrect pulse number while other fields remain valid.

Astronomical coordinate conventions● Open access↗
FA-56027

Pulsar phase polynomial: Pre-reference pulsar pulse numbering truncates negative total phase · case 02

The adapter reports an incorrect pulse number while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-56028

Pulsar phase polynomial: Pre-reference pulsar pulse numbering truncates negative total phase · case 03

The adapter reports an incorrect pulse number while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-56029

Pulsar phase polynomial: Pre-reference pulsar pulse numbering truncates negative total phase · case 04

The adapter reports an incorrect pulse number while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-56030

Pulsar phase polynomial: Pre-reference pulsar pulse numbering truncates negative total phase · case 05

The adapter reports an incorrect pulse number while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-56031

Pulsar phase polynomial: Pulsar folding drops spin-down or the second spin derivative · case 01

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

Astronomical coordinate conventions● Open access↗
FA-56032

Pulsar phase polynomial: Pulsar folding drops spin-down or the second spin derivative · case 02

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

Astronomical coordinate conventions◈ Members↗
FA-56033

Pulsar phase polynomial: Pulsar folding drops spin-down or the second spin derivative · case 03

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

Astronomical coordinate conventions◈ Members↗
FA-56034

Pulsar phase polynomial: Pulsar folding drops spin-down or the second spin derivative · case 04

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

Astronomical coordinate conventions◈ Members↗
FA-56035

Pulsar phase polynomial: Pulsar folding drops spin-down or the second spin derivative · case 05

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

Astronomical coordinate conventions◈ Members↗
FA-56036

Pulsar phase polynomial: Spin-down phase residual is confused with a frequency residual · case 01

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

Astronomical coordinate conventions● Open access↗
FA-56037

Pulsar phase polynomial: Spin-down phase residual is confused with a frequency residual · case 02

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

Astronomical coordinate conventions◈ Members↗
FA-56038

Pulsar phase polynomial: Spin-down phase residual is confused with a frequency residual · case 03

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

Astronomical coordinate conventions◈ Members↗
FA-56039

Pulsar phase polynomial: Spin-down phase residual is confused with a frequency residual · case 04

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

Astronomical coordinate conventions◈ Members↗
FA-56040

Pulsar phase polynomial: Spin-down phase residual is confused with a frequency residual · case 05

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

Astronomical coordinate conventions◈ Members↗
FA-56041

Pulsar dispersion coordinate: Radio dispersion delay uses inverse frequency rather than inverse-square frequency · case 01

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

Astronomical coordinate conventions● Open access↗
FA-56042

Pulsar dispersion coordinate: Radio dispersion delay uses inverse frequency rather than inverse-square frequency · case 02

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

Astronomical coordinate conventions◈ Members↗
FA-56043

Pulsar dispersion coordinate: Radio dispersion delay uses inverse frequency rather than inverse-square frequency · case 03

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

Astronomical coordinate conventions◈ Members↗
FA-56044

Pulsar dispersion coordinate: Radio dispersion delay uses inverse frequency rather than inverse-square frequency · case 04

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

Astronomical coordinate conventions◈ Members↗
FA-56045

Pulsar dispersion coordinate: Radio dispersion delay uses inverse frequency rather than inverse-square frequency · case 05

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

Astronomical coordinate conventions◈ Members↗
FA-56046

Pulsar dispersion coordinate: Finite-reference dedispersion omits or reverses the reference-channel delay · case 01

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

Astronomical coordinate conventions● Open access↗
FA-56047

Pulsar dispersion coordinate: Finite-reference dedispersion omits or reverses the reference-channel delay · case 02

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

Astronomical coordinate conventions◈ Members↗
FA-56048

Pulsar dispersion coordinate: Finite-reference dedispersion omits or reverses the reference-channel delay · case 03

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

Astronomical coordinate conventions◈ Members↗
FA-56049

Pulsar dispersion coordinate: Finite-reference dedispersion omits or reverses the reference-channel delay · case 04

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

Astronomical coordinate conventions◈ Members↗
FA-56050

Pulsar dispersion coordinate: Finite-reference dedispersion omits or reverses the reference-channel delay · case 05

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

Astronomical coordinate conventions◈ Members↗
FA-56051

Pulsar dispersion coordinate: Dedispersion shifts low-frequency arrival times later · case 01

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

Astronomical coordinate conventions● Open access↗
FA-56052

Pulsar dispersion coordinate: Dedispersion shifts low-frequency arrival times later · case 02

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

Astronomical coordinate conventions◈ Members↗
FA-56053

Pulsar dispersion coordinate: Dedispersion shifts low-frequency arrival times later · case 03

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

Astronomical coordinate conventions◈ Members↗
FA-56054

Pulsar dispersion coordinate: Dedispersion shifts low-frequency arrival times later · case 04

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

Astronomical coordinate conventions◈ Members↗
FA-56055

Pulsar dispersion coordinate: Dedispersion shifts low-frequency arrival times later · case 05

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

Astronomical coordinate conventions◈ Members↗
FA-56056

Pulsar dispersion coordinate: Dispersion timing slope retains delay units or reversed spectral sign · case 01

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

Astronomical coordinate conventions● Open access↗
FA-56057

Pulsar dispersion coordinate: Dispersion timing slope retains delay units or reversed spectral sign · case 02

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

Astronomical coordinate conventions◈ Members↗
FA-56058

Pulsar dispersion coordinate: Dispersion timing slope retains delay units or reversed spectral sign · case 03

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

Astronomical coordinate conventions◈ Members↗
FA-56059

Pulsar dispersion coordinate: Dispersion timing slope retains delay units or reversed spectral sign · case 04

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

Astronomical coordinate conventions◈ Members↗
FA-56060

Pulsar dispersion coordinate: Dispersion timing slope retains delay units or reversed spectral sign · case 05

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

Astronomical coordinate conventions◈ Members↗
FA-56061

Pulsar dispersion coordinate: Channel dispersion smearing omits bandwidth or frequency derivative · case 01

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

Astronomical coordinate conventions● Open access↗
FA-56062

Pulsar dispersion coordinate: Channel dispersion smearing omits bandwidth or frequency derivative · case 02

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

Astronomical coordinate conventions◈ Members↗
FA-56063

Pulsar dispersion coordinate: Channel dispersion smearing omits bandwidth or frequency derivative · case 03

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

Astronomical coordinate conventions◈ Members↗
FA-56064

Pulsar dispersion coordinate: Channel dispersion smearing omits bandwidth or frequency derivative · case 04

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

Astronomical coordinate conventions◈ Members↗
FA-56065

Pulsar dispersion coordinate: Channel dispersion smearing omits bandwidth or frequency derivative · case 05

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

Astronomical coordinate conventions◈ Members↗
FA-56066

Pulsar dispersion coordinate: Infinite-frequency arrival coordinate remains anchored to the finite reference band · case 01

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

Astronomical coordinate conventions● Open access↗
FA-56067

Pulsar dispersion coordinate: Infinite-frequency arrival coordinate remains anchored to the finite reference band · case 02

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

Astronomical coordinate conventions◈ Members↗
FA-56068

Pulsar dispersion coordinate: Infinite-frequency arrival coordinate remains anchored to the finite reference band · case 03

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

Astronomical coordinate conventions◈ Members↗
FA-56069

Pulsar dispersion coordinate: Infinite-frequency arrival coordinate remains anchored to the finite reference band · case 04

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

Astronomical coordinate conventions◈ Members↗
FA-56070

Pulsar dispersion coordinate: Infinite-frequency arrival coordinate remains anchored to the finite reference band · case 05

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

Astronomical coordinate conventions◈ Members↗
FA-56071

Heterodyne sideband coordinate: Heterodyne sky frequency assumes one sideband regardless of receiver metadata · case 01

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

Astronomical coordinate conventions● Open access↗
FA-56072

Heterodyne sideband coordinate: Heterodyne sky frequency assumes one sideband regardless of receiver metadata · case 02

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

Astronomical coordinate conventions◈ Members↗
FA-56073

Heterodyne sideband coordinate: Heterodyne sky frequency assumes one sideband regardless of receiver metadata · case 03

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

Astronomical coordinate conventions◈ Members↗
FA-56074

Heterodyne sideband coordinate: Heterodyne sky frequency assumes one sideband regardless of receiver metadata · case 04

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

Astronomical coordinate conventions◈ Members↗
FA-56075

Heterodyne sideband coordinate: Heterodyne sky frequency assumes one sideband regardless of receiver metadata · case 05

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

Astronomical coordinate conventions◈ Members↗
FA-56076

Heterodyne sideband coordinate: Lower sideband channel ordering is not reversed in sky frequency · case 01

The adapter reports an incorrect sky increment while other fields remain valid.

Astronomical coordinate conventions● Open access↗
FA-56077

Heterodyne sideband coordinate: Lower sideband channel ordering is not reversed in sky frequency · case 02

The adapter reports an incorrect sky increment while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-56078

Heterodyne sideband coordinate: Lower sideband channel ordering is not reversed in sky frequency · case 03

The adapter reports an incorrect sky increment while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-56079

Heterodyne sideband coordinate: Lower sideband channel ordering is not reversed in sky frequency · case 04

The adapter reports an incorrect sky increment while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-56080

Heterodyne sideband coordinate: Lower sideband channel ordering is not reversed in sky frequency · case 05

The adapter reports an incorrect sky increment while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-56081

Heterodyne sideband coordinate: Image-sideband coordinate is confused with the selected sky band · case 01

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

Astronomical coordinate conventions● Open access↗
FA-56082

Heterodyne sideband coordinate: Image-sideband coordinate is confused with the selected sky band · case 02

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

Astronomical coordinate conventions◈ Members↗
FA-56083

Heterodyne sideband coordinate: Image-sideband coordinate is confused with the selected sky band · case 03

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

Astronomical coordinate conventions◈ Members↗
FA-56084

Heterodyne sideband coordinate: Image-sideband coordinate is confused with the selected sky band · case 04

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

Astronomical coordinate conventions◈ Members↗
FA-56085

Heterodyne sideband coordinate: Image-sideband coordinate is confused with the selected sky band · case 05

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

Astronomical coordinate conventions◈ Members↗
FA-56086

Heterodyne sideband coordinate: Second mixer offset is added after the sideband orientation transform · case 01

The adapter reports an incorrect second conversion while other fields remain valid.

Astronomical coordinate conventions● Open access↗
FA-56087

Heterodyne sideband coordinate: Second mixer offset is added after the sideband orientation transform · case 02

The adapter reports an incorrect second conversion while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-56088

Heterodyne sideband coordinate: Second mixer offset is added after the sideband orientation transform · case 03

The adapter reports an incorrect second conversion while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-56089

Heterodyne sideband coordinate: Second mixer offset is added after the sideband orientation transform · case 04

The adapter reports an incorrect second conversion while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-56090

Heterodyne sideband coordinate: Second mixer offset is added after the sideband orientation transform · case 05

The adapter reports an incorrect second conversion while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-56091

Heterodyne sideband coordinate: Line-search frequency offset is evaluated in IF instead of sky coordinates · case 01

The adapter reports an incorrect rest offset while other fields remain valid.

Astronomical coordinate conventions● Open access↗
FA-56092

Heterodyne sideband coordinate: Line-search frequency offset is evaluated in IF instead of sky coordinates · case 02

The adapter reports an incorrect rest offset while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-56093

Heterodyne sideband coordinate: Line-search frequency offset is evaluated in IF instead of sky coordinates · case 03

The adapter reports an incorrect rest offset while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-56094

Heterodyne sideband coordinate: Line-search frequency offset is evaluated in IF instead of sky coordinates · case 04

The adapter reports an incorrect rest offset while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-56095

Heterodyne sideband coordinate: Line-search frequency offset is evaluated in IF instead of sky coordinates · case 05

The adapter reports an incorrect rest offset while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-56096

Heterodyne sideband coordinate: Sky-to-IF inverse mapping drops the sideband sign · case 01

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

Astronomical coordinate conventions● Open access↗
FA-56097

Heterodyne sideband coordinate: Sky-to-IF inverse mapping drops the sideband sign · case 02

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

Astronomical coordinate conventions◈ Members↗
FA-56098

Heterodyne sideband coordinate: Sky-to-IF inverse mapping drops the sideband sign · case 03

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

Astronomical coordinate conventions◈ Members↗
FA-56099

Heterodyne sideband coordinate: Sky-to-IF inverse mapping drops the sideband sign · case 04

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

Astronomical coordinate conventions◈ Members↗
FA-56100

Heterodyne sideband coordinate: Sky-to-IF inverse mapping drops the sideband sign · case 05

The adapter reports an incorrect inverse if 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 ↗