FA-12010 / Optimization solver contracts / Member archive
Branch and bound prunes against an infeasible incumbent · case 05
Branch and bound prunes against an infeasible incumbent.
Case contract
Minimization, one optimum required: prune iff incumbent is feasible and node lower bound>=incumbent objective.
Why this case matters
This deterministic solver-step model isolates an algorithmic invariant used by iterative optimization implementations.
One recorded failure
Sample boundary fixtureThis sample comes from the broken implementation of a controlled reproducer.
| Boundary fixture | Actual | Expected | Outcome |
|---|---|---|---|
| infeasible estimate | true | false | Failed |
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