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Analyze the V3 targeted confirmation failures - #3530

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Analyze the V3 targeted confirmation failures#3530
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@joshlf

@joshlf joshlf commented Aug 3, 2026

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Perform a post-result qualitative analysis without changing the official V3
decision. Trace each miss back to the proof structure that produced it rather
than adding a checklist of fixture-specific mistakes.

The configuration failures omit the semantics of combinators such as all and
not, then assert closure of the resulting product or complement. The
exact-domain failures compress an ordered, fallible build into an endpoint
mapping and therefore cannot reconstruct which intermediate states are
reachable. Several reports state that two sets are incomparable without giving
both separating witnesses. One otherwise-correct report omits authority for
the usize domain. Another seeks a maximal bad-input remainder even though one
complete existential witness is sufficient for UNSOUND.

These observations explain why Required/Covered and verdict certificates were
necessary but not sufficient: the representation still allowed lossy summaries
to masquerade as exact derivations. They motivate V4's explicit case domains
and fibers, set-relation certificates, staged construction relations,
reversible transformations, and demand-driven counterexample scope. Keep these
as general proof obligations rather than embedding the evaluated fixtures in
the runtime skill.


Latest Update: v5 — Compare vs v4

📚 Full Patch History

Links show the diff between the row version and the column version.

Version v4 v3 v2 v1 Base
v5 vs v4 vs v3 vs v2 vs v1 vs Base
v4 vs v3 vs v2 vs v1 vs Base
v3 vs v2 vs v1 vs Base
v2 vs v1 vs Base
v1 vs Base
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git fetch origin refs/heads/Glzlcl663nbggljjqi64x7gs3yyw5b7ys && git checkout -b pr-Glzlcl663nbggljjqi64x7gs3yyw5b7ys FETCH_HEAD

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git fetch origin refs/heads/Glzlcl663nbggljjqi64x7gs3yyw5b7ys && git checkout FETCH_HEAD

Cherry Pick

git fetch origin refs/heads/Glzlcl663nbggljjqi64x7gs3yyw5b7ys && git cherry-pick FETCH_HEAD

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git pull origin refs/heads/Glzlcl663nbggljjqi64x7gs3yyw5b7ys

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codecov-commenter commented Aug 29, 2026

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✅ All modified and coverable lines are covered by tests.
⚠️ Please upload report for BASE (G3rihw6xuj2lcqvojuxabx73mkjzsgdd5@c10b7d0). Learn more about missing BASE report.

Additional details and impacted files
@@                         Coverage Diff                          @@
##             G3rihw6xuj2lcqvojuxabx73mkjzsgdd5    #3530   +/-   ##
====================================================================
  Coverage                                     ?   91.85%           
====================================================================
  Files                                        ?       20           
  Lines                                        ?     6093           
  Branches                                     ?        0           
====================================================================
  Hits                                         ?     5597           
  Misses                                       ?      496           
  Partials                                     ?        0           

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Perform a post-result qualitative analysis without changing the official V3
decision. Trace each miss back to the proof structure that produced it rather
than adding a checklist of fixture-specific mistakes.

The configuration failures omit the semantics of combinators such as all and
not, then assert closure of the resulting product or complement. The
exact-domain failures compress an ordered, fallible build into an endpoint
mapping and therefore cannot reconstruct which intermediate states are
reachable. Several reports state that two sets are incomparable without giving
both separating witnesses. One otherwise-correct report omits authority for
the usize domain. Another seeks a maximal bad-input remainder even though one
complete existential witness is sufficient for UNSOUND.

These observations explain why Required/Covered and verdict certificates were
necessary but not sufficient: the representation still allowed lossy summaries
to masquerade as exact derivations. They motivate V4's explicit case domains
and fibers, set-relation certificates, staged construction relations,
reversible transformations, and demand-driven counterexample scope. Keep these
as general proof obligations rather than embedding the evaluated fixtures in
the runtime skill.

gherrit-pr-id: Glzlcl663nbggljjqi64x7gs3yyw5b7ys
@joshlf
joshlf force-pushed the G3rihw6xuj2lcqvojuxabx73mkjzsgdd5 branch from 93fdb47 to c10b7d0 Compare August 29, 2026 11:11
@joshlf
joshlf force-pushed the Glzlcl663nbggljjqi64x7gs3yyw5b7ys branch from 7a81574 to 86a3709 Compare August 29, 2026 11:11
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