FA-17347 / Time representation / Member archive

Monotonic displacement reverses checkpoint subtraction · case 02

The decoded time state disagrees with the explicit regression oracle for mono_delta.

Member previewVariant 2 · 3 implementations · 11 checks per implementation

Case contract

A checkpoint stores wall and monotonic coordinates, boot identity, budget and pause state. Same-boot restore uses monotonic elapsed; reboot restore uses nonnegative wall elapsed. Paused timers consume no elapsed ticks. Return remaining budget, expiration flag, overdue ticks, current-domain deadline (None while paused), and reconstructed running base. All units are identical integer ticks.

Why this case matters

Clock transfer and timestamp consumers require preserved coordinate, phase, validity and elapsed-time semantics.

One recorded failure

Sample boundary fixture

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

Boundary fixture	Actual	Expected	Outcome
fixture 1	`[30, false, 0, 80, 50]`	`[0, true, 0, 50, 20]`	Failed

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