Durable result evidence
Large certificates are stored as durable files; the response returns a digest and verification reports. They can be inspected independently of the selecting engine.
Know what
passed.
Integrity, checked candidates, optimality, infeasibility, unboundedness and original-source trust are distinct. The current release keeps those meanings separate.
Current source G: UNISOLVE 0.16.1, 82 profiles, 65 entry functions, 133 Python exports, 38 CLI operations and nine stdio MCP tools. All profiles were exercised through the installed-package campaign; optional declines and incomplete outcomes remain explicit. Current evidence ↗
READ THE RESULTSeparate properties.
Separate properties.
Separate evidence.
Six illustrative explanations—not live solver output, a certificate upload or an exact schema for every profile.
integrity_verifiedPayload integrity
The retained payload matches its recorded identity.
solution_verifiedChecked candidate
A candidate passes its applicable original-model checks.
optimality_verifiedChecked optimum
A supported independent optimum claim passes.
infeasibility_verifiedChecked infeasibility
The supported original-model infeasibility claim passes.
unbounded_verifiedChecked unboundedness
The supported original-model unboundedness claim passes.
validNo contradictory claim
The performed checks find no contradictory claim; this is not synonymous with solved.
INTERPRETATION / ILLUSTRATION
Original-source and trust flags remain separate as well. A valid-but-incomplete state is not admitted as a complete answer when --require-optimal applies. Exact field combinations depend on the selected result and profile.
CURRENT INVENTORYCheck the answer.
Check the answer.
Keep its meaning.
Every accepted solve-any answer receives a solver-specific check and generic certificate verification.
Exact values remain exact
Supported irrational optima retain algebraic witness, objective and bound fields. Ordinary numeric fields stay null rather than misrepresenting an irrational value.
Exact linear-MIP path
A specifically configured SCIP/VIPR route supplies original-model certificates for exact linear MIP. Ordinary SCIP, HiGHS or other numerical statuses are not promoted to independent proof.
Proof-preserving revisions
A parent bound transfers only after independent replay and preservation of every parent domain, objective and row. A fresh current-original witness must attain it before a new optimum is granted.
BEFORE ACCEPTANCEWhat the proof
What the proof
does not say.
Does --require-optimal guarantee a result by the deadline?
No. It restricts acceptance to an independently checked complete decision or global optimum. Unsupported cases, exhausted budgets and unknown outcomes retain their boundaries.
Does parser availability establish full language coverage?
No. Frontends admit defined subsets. Optional reader output and high-level compiler translation retain their own trust boundaries.
Does a regional proof establish the global optimum?
No. Fixed-outside regional optimality applies only to that restricted problem unless an original-model global proof independently closes the claim.
Are all external solvers native UNISOLVE engines?
No. Optional integrations are explicit. GCG decomposition/column generation, Concorde, Gurobi and Kissat are not native UNISOLVE engines in this update.
Does a checked mathematical model certify the business request?
No. The customer must validate the model and interpretation of its requirements. Proof acceptance covers the admitted original model and theorem.
ORIGINAL MODEL / RESULT SCOPEA checked answer.
A checked answer.
The right conclusion.
Keep a feasible solution, a checked bound, a regional optimum, an epsilon gap and a complete original optimum separate. Infeasibility and unboundedness have their own proof obligations. A checksum or a numerical backend status grants no global proof authority.
GT2 optimum 21,166
Retained independently checked original-model result with an explicit 20-million-work checker allowance. A larger checking allowance is part of the disclosed result.
The checker is not a rerun
Fresh proof tests block solver constructors, while hostile certificate changes are tested separately. Accepted solve_any answers need both solver-specific and generic certificate verification.
Completion is not guaranteed
--require-optimal accepts only a checked complete decision or global result. It cannot force an unfinished search to produce one.