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Export and natively replay bounded completed symbolic inputs #579

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361a0db
Capture bounded completed symbolic inputs for native coverage replay
CaelmBleidd Oct 16, 2026
b7b2a01
Test boxed registry identity with explicit branch domains
CaelmBleidd Oct 16, 2026
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50 changes: 32 additions & 18 deletions usvm-ts-calls/src/test/kotlin/org/usvm/ts/calls/CallsClassDataRegistryOracleTest.kt
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Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,7 @@ import org.junit.jupiter.api.io.TempDir
import org.usvm.SolverType
import org.usvm.ts.pbt.model.ArrayDomain
import org.usvm.ts.pbt.model.BooleanDomain
import org.usvm.ts.pbt.model.ConstantDomain
import org.usvm.ts.pbt.model.IntegerDomain
import org.usvm.ts.pbt.model.JsConcreteValue
import org.usvm.ts.pbt.model.NumberDomain
Expand Down Expand Up @@ -219,28 +220,41 @@ class CallsClassDataRegistryOracleTest {
constructorInputs = listOf(PropertyInput(name = "flag", domain = BooleanDomain)),
)

val result = CurrentTsCallsClassCoverageEngine().search(
CallsClassSearchRequest(
harness = harness,
profile = CallsExperimentProfile.EMPTY_STOP,
frozenModelIds = emptySet(),
expectedNativeFrontendRevision = CallsBuildIdentity.nativeFrontendRevision,
seed = 1,
budget = 3.seconds,
timeQuantum = 100.milliseconds,
solverQueryLimit = 1.seconds,
solverType = SolverType.YICES,
candidateCap = 20,
requireEntryPointWitness = true,
),
)
// Coverage-directed search need not enumerate every input model for each entry point.
val branchInputs = listOf(JsConcreteValue.Boolean(true), JsConcreteValue.Boolean(false))
val candidates = branchInputs.flatMap { flag ->
val inputs = listOf(PropertyInput(name = "flag", domain = ConstantDomain(flag)))
val branchHarness = harness.copy(
surface = harness.surface.copy(constructorInputs = inputs),
functions = harness.functions.map { it.copy(inputs = inputs) },
)
val result = CurrentTsCallsClassCoverageEngine().search(
CallsClassSearchRequest(
harness = branchHarness,
profile = CallsExperimentProfile.EMPTY_STOP,
frozenModelIds = emptySet(),
expectedNativeFrontendRevision = CallsBuildIdentity.nativeFrontendRevision,
seed = 1,
budget = 3.seconds,
timeQuantum = 100.milliseconds,
solverQueryLimit = 1.seconds,
solverType = SolverType.YICES,
candidateCap = 20,
requireEntryPointWitness = true,
),
)

val scenarioIds = result.search.candidates.map { it.entryPointId }.toSet()
assertEquals(harness.scenarios.map { it.id }.toSet(), scenarioIds, "flag=$flag")
result.search.candidates.forEach { assertEquals(listOf(flag), it.inputs) }
result.search.candidates
}

val constructorScenarioId = harness.scenarios.first().id
val constructorBranches = result.search.candidates.filter { it.entryPointId == constructorScenarioId }
val constructorBranches = candidates.filter { it.entryPointId == constructorScenarioId }
.map { it.inputs.single() }.toSet()
assertEquals(setOf(JsConcreteValue.Boolean(true), JsConcreteValue.Boolean(false)), constructorBranches)
assertEquals(harness.scenarios.map { it.id }.toSet(), result.search.candidates.map { it.entryPointId }.toSet())
for (candidate in result.search.candidates) {
for (candidate in candidates) {
val index = harness.scenarios.indexOfFirst { it.id == candidate.entryPointId }
val original = OriginalTypeScriptClassReplayer(
directory,
Expand Down
7 changes: 6 additions & 1 deletion usvm-ts-fast-check/src/main/kotlin/org/usvm/ts/pbt/campaign/PropertyCampaignArtifact.kt
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Original file line number Diff line number Diff line change
Expand Up @@ -26,16 +26,21 @@ data class PropertyCampaignArtifact(
val metadata: PropertyCampaignMetadata? = null,
val pbtAllocationMillis: Long? = null,
val shrinkWitness: Boolean = true,
val completedInputLimit: Int = 0,
) {
init {
val resultProperties = listOfNotNull(
result.propertyId,
result.concrete?.propertyId,
result.symbolic?.propertyId,
result.confirmation?.candidate?.propertyId,
)
) + result.symbolicInputReplays.flatMap { replay ->
listOfNotNull(replay.candidate.propertyId, replay.replay.coverage?.propertyId)
}
val sameProperty = resultProperties.all { it == property.id }
require(sameProperty) { "Campaign evidence belongs to another property" }
require(completedInputLimit >= 0)
require(result.symbolicInputReplays.size <= completedInputLimit)
require(pbtAllocationMillis == null || pbtAllocationMillis in 1 until configuration.timeoutMillis)
require(validationReserveMillis > 0) { "Validation reserve must be positive" }
require(targetRole == WitnessRole.PROPERTY) { "Direct controls search the original property" }
Expand Down
109 changes: 52 additions & 57 deletions usvm-ts-fast-check/src/main/kotlin/org/usvm/ts/pbt/campaign/PropertyCampaignRunner.kt
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Original file line number Diff line number Diff line change
Expand Up @@ -19,7 +19,6 @@ import org.usvm.ts.pbt.backend.WitnessEvidenceDelta
import org.usvm.ts.pbt.backend.WitnessReplayConfiguration
import org.usvm.ts.pbt.backend.WitnessReplayDeadline
import org.usvm.ts.pbt.backend.WitnessReplayStatus
import org.usvm.ts.pbt.backend.WitnessTarget
import org.usvm.ts.pbt.backend.captureWitness
import org.usvm.ts.pbt.fastcheck.BackendErrorKind
import org.usvm.ts.pbt.fastcheck.FastCheckBackend
Expand Down Expand Up @@ -63,6 +62,7 @@ data class PropertyCampaignResult(
val stoppedAt: PropertyCampaignPhase?,
val elapsedMillis: Long,
val diagnostic: String?,
val symbolicInputReplays: List<SymbolicInputReplay> = emptyList(),
) {
val confirmedViolation: Boolean
get() = concrete?.failure?.kind == PropertyFailureKind.PROPERTY ||
Expand All @@ -76,15 +76,21 @@ class PropertyCampaignRunner(
private val nodeExecutable: String = "node",
private val machineOptions: UMachineOptions = UMachineOptions(solverType = SolverType.YICES),
) {
/** Captures the requested direct controls and their actual result without repeating execution. */
/** Keeps phase transitions and retained partial results under the same deadline. */
@Suppress("LongMethod")
fun runArtifact(
property: PropertyDefinition,
mode: PropertyCampaignMode,
configuration: PropertyRunConfiguration = PropertyRunConfiguration(),
validationReserveMillis: Long = DEFAULT_VALIDATION_RESERVE_MILLIS,
pbtAllocationMillis: Long? = null,
shrinkWitness: Boolean = true,
completedInputLimit: Int = 0,
): PropertyCampaignArtifact {
require(completedInputLimit >= 0) { "Completed input limit must not be negative" }
require(completedInputLimit == 0 || mode != PropertyCampaignMode.PBT_ONLY) {
"Completed input capture requires a symbolic campaign mode"
}
validateControls(mode, configuration, validationReserveMillis, pbtAllocationMillis)
val guided = mode == PropertyCampaignMode.COVERAGE_FEEDBACK
val startedAt = System.nanoTime()
Expand All @@ -98,6 +104,7 @@ class PropertyCampaignRunner(
var concrete: PropertyRunResult? = null
var symbolic: UsvmPropertySearchResult? = null
var confirmation: WitnessEvidenceDelta? = null
var inputReplays: SymbolicInputReplayCollector? = null

fun result(
stop: PropertyCampaignStop = PropertyCampaignStop.COMPLETED,
Expand All @@ -108,12 +115,14 @@ class PropertyCampaignRunner(
validationReserveMillis = validationReserveMillis,
pbtAllocationMillis = pbtAllocationMillis,
shrinkWitness = shrinkWitness,
completedInputLimit = completedInputLimit,
result = PropertyCampaignResult(
propertyId = property.id,
mode = mode,
concrete = concrete,
symbolic = symbolic,
confirmation = confirmation,
symbolicInputReplays = inputReplays?.replays.orEmpty(),
stop = stop,
stoppedAt = phase.takeUnless { stop == PropertyCampaignStop.COMPLETED },
elapsedMillis = (System.nanoTime() - startedAt) / NANOS_PER_MILLISECOND,
Expand All @@ -133,7 +142,9 @@ class PropertyCampaignRunner(
val backend = FastCheckBackend(listOf(root), nodeExecutable = nodeExecutable, tsconfig = tsconfig)
if (deadline.remainingMillis() <= 0) return result(PropertyCampaignStop.DEADLINE)

usedConfiguration = evidenceConfiguration(configuration, requireNotNull(metadata).sources, guided)
usedConfiguration = evidenceConfiguration(
configuration, requireNotNull(metadata).sources, guided, captureNative = completedInputLimit > 0,
)

if (mode != PropertyCampaignMode.SYMBOLIC_ONLY) {
phase = PropertyCampaignPhase.PBT
Expand Down Expand Up @@ -163,38 +174,47 @@ class PropertyCampaignRunner(
}

val sources = captureSources(property, root)
val coverageRequest = usedConfiguration.coverageRequest ?: PropertyCoverageRequest()
if (guided || completedInputLimit > 0) {
inputReplays = SymbolicInputReplayCollector(
property, backend, root, sources, coverageRequest.copy(admittedOnly = true),
deadline, validationReserveMillis, limit = completedInputLimit,
)
}
symbolic = search(
property = property,
root = root,
deadline = deadline,
validationReserveMillis = validationReserveMillis,
feedback = if (guided) {
coverageFeedback(
property, concrete, backend, sources, usedConfiguration, deadline, validationReserveMillis,
UsvmCoverageFeedback(
initialCoverage = concrete?.coverage,
nativeReplay = requireNotNull(inputReplays)::replayForGuidance,
)
} else {
null
},
completedInputLimit = completedInputLimit,
)
if (symbolic == null) return result(PropertyCampaignStop.DEADLINE)

val searchTimedOut = symbolic.status == UsvmPropertySearchStatus.TIMEOUT
if (symbolic.target == null) {
val stop = if (searchTimedOut) PropertyCampaignStop.DEADLINE else PropertyCampaignStop.COMPLETED
return result(stop)
}

phase = PropertyCampaignPhase.CONFIRMATION
confirmation = confirm(
backend, property, symbolic, sources, usedConfiguration, deadline,
validationReserveMillis, shrinkWitness,
)

return if (confirmation.status == WitnessReplayStatus.TIMEOUT) {
result(PropertyCampaignStop.DEADLINE)
} else {
result()
val hasNativeWork = symbolic.target != null || symbolic.completedInputs.isNotEmpty()
if (hasNativeWork) phase = PropertyCampaignPhase.CONFIRMATION
if (symbolic.target != null) {
confirmation = confirm(
backend, property, symbolic, inputReplays?.sources ?: sources, usedConfiguration, deadline,
validationReserveMillis, shrinkWitness,
)
}
inputReplays?.collect(symbolic.completedInputs)
phaseDiagnostic = listOfNotNull(phaseDiagnostic, inputReplays?.diagnostic)
.joinToString(separator = "; ").takeIf(String::isNotEmpty)

val expired = symbolic.status == UsvmPropertySearchStatus.TIMEOUT ||
confirmation?.status == WitnessReplayStatus.TIMEOUT || inputReplays?.timedOut == true ||
deadline.remainingMillis() <= 0
val stop = if (expired) PropertyCampaignStop.DEADLINE else PropertyCampaignStop.COMPLETED
return result(stop)
} catch (error: PbtBackendException) {
val stop = if (error.kind == BackendErrorKind.TIMEOUT) {
PropertyCampaignStop.DEADLINE
Expand Down Expand Up @@ -228,13 +248,15 @@ class PropertyCampaignRunner(
validationReserveMillis: Long = DEFAULT_VALIDATION_RESERVE_MILLIS,
pbtAllocationMillis: Long? = null,
shrinkWitness: Boolean = true,
completedInputLimit: Int = 0,
): PropertyCampaignResult = runArtifact(
property = property,
mode = mode,
configuration = configuration,
validationReserveMillis = validationReserveMillis,
pbtAllocationMillis = pbtAllocationMillis,
shrinkWitness = shrinkWitness,
completedInputLimit = completedInputLimit,
).result

private fun validateControls(
Expand All @@ -258,16 +280,18 @@ class PropertyCampaignRunner(
configuration: PropertyRunConfiguration,
sources: List<PropertyObservationSource>,
guided: Boolean,
captureNative: Boolean,
): PropertyRunConfiguration {
if (!guided) return configuration
if (!guided && !captureNative) return configuration

val request = configuration.coverageRequest ?: PropertyCoverageRequest()
return configuration.copy(
coverageRequest = request.copy(admittedOnly = true),
observationRequest = configuration.observationRequest ?: PropertyObservationRequest(
points = emptyList(),
sources = sources,
),
observationRequest = if (guided) {
configuration.observationRequest ?: PropertyObservationRequest(points = emptyList(), sources = sources)
} else {
configuration.observationRequest
},
)
}

Expand Down Expand Up @@ -338,6 +362,7 @@ class PropertyCampaignRunner(
deadline: WitnessReplayDeadline,
validationReserveMillis: Long,
feedback: UsvmCoverageFeedback?,
completedInputLimit: Int,
): UsvmPropertySearchResult? {
if (deadline.remainingMillis() <= validationReserveMillis) return null

Expand All @@ -359,6 +384,7 @@ class PropertyCampaignRunner(
concreteCapability = ProjectionCapability(level = ProjectionLevel.EXACT),
deadlineReached = { deadline.remainingMillis() <= validationReserveMillis },
coverageFeedback = feedback,
completedInputLimit = completedInputLimit,
)
}

Expand Down Expand Up @@ -386,37 +412,6 @@ class PropertyCampaignRunner(
}
}

private fun coverageFeedback(
property: PropertyDefinition,
concrete: PropertyRunResult?,
backend: FastCheckBackend,
sources: List<PropertyObservationSource>,
configuration: PropertyRunConfiguration,
deadline: WitnessReplayDeadline,
validationReserveMillis: Long,
) = UsvmCoverageFeedback(
initialCoverage = concrete?.coverage,
nativeReplay = { inputs ->
val remainingMillis = deadline.remainingMillis() - validationReserveMillis
if (remainingMillis <= 0) {
null
} else {
val candidate = property.captureWitness(
inputs = inputs,
target = WitnessTarget(id = property.predicate.exportName),
sources = sources,
provenance = "usvm:coverage",
)
backend.replayInput(
property = property,
candidate = candidate,
coverageRequest = requireNotNull(configuration.coverageRequest),
deadline = WitnessReplayDeadline(timeoutMillis = remainingMillis),
)
}
},
)

private fun captureSources(property: PropertyDefinition, root: Path): List<PropertyObservationSource> {
val modules = listOfNotNull(property.predicate.module, property.precondition?.module).distinct()

Expand Down
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