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Reserve policy permanently deletes charge · case 04

The protected reserve is subtracted from stored inventory even without delivery.

Member previewVariant 4 · 3 implementations · 6 checks per implementation

Case contract

Return [delivered,remaining] for nonnegative inventory, request, reserve; reserve limits access but does not delete stored charge.

Why this case matters

An explicit synthetic battery bookkeeping model isolates this state-accounting error; it is not an engineering prediction or safety procedure.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixtureActualExpectedOutcome
floor[40, 0][28, 12]Failed

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