/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/ntdrivers/cdaudio.i.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05ce600 [2022-02-24 04:31:37,141 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-24 04:31:37,142 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-24 04:31:37,172 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-24 04:31:37,173 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-24 04:31:37,174 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-24 04:31:37,176 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-24 04:31:37,180 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-24 04:31:37,181 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-24 04:31:37,184 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-24 04:31:37,185 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-24 04:31:37,186 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-24 04:31:37,186 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-24 04:31:37,188 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-24 04:31:37,189 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-24 04:31:37,191 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-24 04:31:37,191 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-24 04:31:37,192 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-24 04:31:37,193 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-24 04:31:37,197 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-24 04:31:37,198 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-24 04:31:37,199 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-24 04:31:37,200 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-24 04:31:37,200 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-24 04:31:37,205 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-24 04:31:37,211 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-24 04:31:37,212 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-24 04:31:37,212 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-24 04:31:37,213 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-02-24 04:31:37,220 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-24 04:31:37,220 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-24 04:31:37,222 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-24 04:31:37,222 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-24 04:31:37,222 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-24 04:31:37,222 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-24 04:31:37,222 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-24 04:31:37,222 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-24 04:31:37,222 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-24 04:31:37,222 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-24 04:31:37,223 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-24 04:31:37,223 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-24 04:31:37,223 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-24 04:31:37,223 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-24 04:31:37,224 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-24 04:31:37,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-24 04:31:37,224 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-24 04:31:37,224 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-24 04:31:37,224 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-24 04:31:37,224 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-02-24 04:31:37,224 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-24 04:31:37,542 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-24 04:31:37,584 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-24 04:31:37,587 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-24 04:31:37,588 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-24 04:31:37,588 INFO L275 PluginConnector]: CDTParser initialized [2022-02-24 04:31:37,589 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers/cdaudio.i.cil-2.c [2022-02-24 04:31:37,675 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3ee495a0/83ea2f2f7e0143029c021b1a4510a1f0/FLAG990b60808 [2022-02-24 04:31:38,391 INFO L306 CDTParser]: Found 1 translation units. [2022-02-24 04:31:38,392 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/cdaudio.i.cil-2.c [2022-02-24 04:31:38,445 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3ee495a0/83ea2f2f7e0143029c021b1a4510a1f0/FLAG990b60808 [2022-02-24 04:31:38,665 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3ee495a0/83ea2f2f7e0143029c021b1a4510a1f0 [2022-02-24 04:31:38,681 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-24 04:31:38,682 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-24 04:31:38,685 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-24 04:31:38,685 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-24 04:31:38,689 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-24 04:31:38,690 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:31:38" (1/1) ... [2022-02-24 04:31:38,691 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66357958 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:31:38, skipping insertion in model container [2022-02-24 04:31:38,691 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:31:38" (1/1) ... [2022-02-24 04:31:38,697 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-24 04:31:38,820 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-24 04:31:39,340 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/cdaudio.i.cil-2.c[90200,90213] [2022-02-24 04:31:39,907 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-24 04:31:39,915 INFO L203 MainTranslator]: Completed pre-run [2022-02-24 04:31:39,981 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/cdaudio.i.cil-2.c[90200,90213] [2022-02-24 04:31:40,334 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-24 04:31:40,367 INFO L208 MainTranslator]: Completed translation [2022-02-24 04:31:40,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:31:40 WrapperNode [2022-02-24 04:31:40,368 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-24 04:31:40,369 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-24 04:31:40,369 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-24 04:31:40,369 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-24 04:31:40,379 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:31:40" (1/1) ... [2022-02-24 04:31:40,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:31:40" (1/1) ... [2022-02-24 04:31:40,448 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:31:40" (1/1) ... [2022-02-24 04:31:40,448 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:31:40" (1/1) ... [2022-02-24 04:31:40,545 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:31:40" (1/1) ... [2022-02-24 04:31:40,567 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:31:40" (1/1) ... [2022-02-24 04:31:40,585 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:31:40" (1/1) ... [2022-02-24 04:31:40,607 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-24 04:31:40,608 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-24 04:31:40,608 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-24 04:31:40,609 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-24 04:31:40,610 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:31:40" (1/1) ... [2022-02-24 04:31:40,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-24 04:31:40,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-24 04:31:40,643 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-24 04:31:40,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-24 04:31:40,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-24 04:31:40,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-24 04:31:40,723 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-24 04:31:40,723 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlWriteRegistryValue [2022-02-24 04:31:40,723 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedIncrement [2022-02-24 04:31:40,723 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedDecrement [2022-02-24 04:31:40,723 INFO L138 BoogieDeclarations]: Found implementation of procedure MmLockPagableDataSection [2022-02-24 04:31:40,723 INFO L138 BoogieDeclarations]: Found implementation of procedure IoOpenDeviceRegistryKey [2022-02-24 04:31:40,724 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-02-24 04:31:40,724 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-02-24 04:31:40,724 INFO L138 BoogieDeclarations]: Found implementation of procedure SendSrbSynchronous [2022-02-24 04:31:40,724 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioAddDevice [2022-02-24 04:31:40,725 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSignalCompletion [2022-02-24 04:31:40,725 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioStartDevice [2022-02-24 04:31:40,725 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPnp [2022-02-24 04:31:40,725 INFO L138 BoogieDeclarations]: Found implementation of procedure DriverEntry [2022-02-24 04:31:40,725 INFO L138 BoogieDeclarations]: Found implementation of procedure NecSupportNeeded [2022-02-24 04:31:40,726 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioReadWrite [2022-02-24 04:31:40,726 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioDeviceControl [2022-02-24 04:31:40,727 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSendToNextDriver [2022-02-24 04:31:40,727 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioIsPlayActive [2022-02-24 04:31:40,727 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioNECDeviceControl [2022-02-24 04:31:40,727 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPioneerDeviceControl [2022-02-24 04:31:40,727 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioDenonDeviceControl [2022-02-24 04:31:40,727 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioHitachiSendPauseCommand [2022-02-24 04:31:40,727 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioHitachiDeviceControl [2022-02-24 04:31:40,727 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio535DeviceControl [2022-02-24 04:31:40,727 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio435DeviceControl [2022-02-24 04:31:40,727 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioAtapiDeviceControl [2022-02-24 04:31:40,727 INFO L138 BoogieDeclarations]: Found implementation of procedure HpCdrProcessLastSession [2022-02-24 04:31:40,727 INFO L138 BoogieDeclarations]: Found implementation of procedure HPCdrCompletion [2022-02-24 04:31:40,727 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioHPCdrDeviceControl [2022-02-24 04:31:40,727 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioForwardIrpSynchronous [2022-02-24 04:31:40,727 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioUnload [2022-02-24 04:31:40,727 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPower [2022-02-24 04:31:40,728 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-02-24 04:31:40,728 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-24 04:31:40,728 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_malloc [2022-02-24 04:31:40,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAcquireFastMutex [2022-02-24 04:31:40,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ExReleaseFastMutex [2022-02-24 04:31:40,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2022-02-24 04:31:40,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ExFreePool [2022-02-24 04:31:40,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertHeadList [2022-02-24 04:31:40,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertTailList [2022-02-24 04:31:40,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedRemoveHeadList [2022-02-24 04:31:40,728 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAllocateMdl [2022-02-24 04:31:40,728 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAttachDeviceToDeviceStack [2022-02-24 04:31:40,728 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildAsynchronousFsdRequest [2022-02-24 04:31:40,728 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2022-02-24 04:31:40,728 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateDevice [2022-02-24 04:31:40,728 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateSymbolicLink [2022-02-24 04:31:40,728 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteDevice [2022-02-24 04:31:40,729 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2022-02-24 04:31:40,729 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDetachDevice [2022-02-24 04:31:40,729 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeIrp [2022-02-24 04:31:40,729 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeMdl [2022-02-24 04:31:40,729 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2022-02-24 04:31:40,729 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2022-02-24 04:31:40,729 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2022-02-24 04:31:40,729 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReleaseCancelSpinLock [2022-02-24 04:31:40,729 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-02-24 04:31:40,729 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetHardErrorOrVerifyDevice [2022-02-24 04:31:40,729 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-02-24 04:31:40,729 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-02-24 04:31:40,729 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-02-24 04:31:40,730 INFO L138 BoogieDeclarations]: Found implementation of procedure KeAcquireSpinLockRaiseToDpc [2022-02-24 04:31:40,730 INFO L138 BoogieDeclarations]: Found implementation of procedure KeDelayExecutionThread [2022-02-24 04:31:40,730 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeEvent [2022-02-24 04:31:40,730 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSemaphore [2022-02-24 04:31:40,730 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSpinLock [2022-02-24 04:31:40,730 INFO L138 BoogieDeclarations]: Found implementation of procedure KeReleaseSemaphore [2022-02-24 04:31:40,730 INFO L138 BoogieDeclarations]: Found implementation of procedure KfReleaseSpinLock [2022-02-24 04:31:40,730 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-02-24 04:31:40,730 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-02-24 04:31:40,730 INFO L138 BoogieDeclarations]: Found implementation of procedure MmAllocateContiguousMemory [2022-02-24 04:31:40,730 INFO L138 BoogieDeclarations]: Found implementation of procedure MmFreeContiguousMemory [2022-02-24 04:31:40,731 INFO L138 BoogieDeclarations]: Found implementation of procedure MmMapLockedPagesSpecifyCache [2022-02-24 04:31:40,731 INFO L138 BoogieDeclarations]: Found implementation of procedure MmPageEntireDriver [2022-02-24 04:31:40,731 INFO L138 BoogieDeclarations]: Found implementation of procedure MmResetDriverPaging [2022-02-24 04:31:40,731 INFO L138 BoogieDeclarations]: Found implementation of procedure MmUnlockPages [2022-02-24 04:31:40,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2022-02-24 04:31:40,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ObfDereferenceObject [2022-02-24 04:31:40,731 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-02-24 04:31:40,732 INFO L138 BoogieDeclarations]: Found implementation of procedure PoStartNextPowerIrp [2022-02-24 04:31:40,732 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2022-02-24 04:31:40,732 INFO L138 BoogieDeclarations]: Found implementation of procedure PsTerminateSystemThread [2022-02-24 04:31:40,732 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlAnsiStringToUnicodeString [2022-02-24 04:31:40,732 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCompareMemory [2022-02-24 04:31:40,732 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCopyUnicodeString [2022-02-24 04:31:40,733 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlDeleteRegistryValue [2022-02-24 04:31:40,733 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlFreeUnicodeString [2022-02-24 04:31:40,733 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitString [2022-02-24 04:31:40,733 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitUnicodeString [2022-02-24 04:31:40,733 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlQueryRegistryValues [2022-02-24 04:31:40,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-02-24 04:31:40,733 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-02-24 04:31:40,733 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-02-24 04:31:40,733 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-24 04:31:40,734 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-24 04:31:40,734 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-24 04:31:40,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-24 04:31:40,734 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-02-24 04:31:40,734 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-24 04:31:40,734 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-02-24 04:31:40,734 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2022-02-24 04:31:40,734 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-02-24 04:31:40,734 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2022-02-24 04:31:40,734 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2022-02-24 04:31:40,734 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-02-24 04:31:40,734 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2022-02-24 04:31:40,734 INFO L130 BoogieDeclarations]: Found specification of procedure RtlQueryRegistryValues [2022-02-24 04:31:40,734 INFO L130 BoogieDeclarations]: Found specification of procedure RtlWriteRegistryValue [2022-02-24 04:31:40,735 INFO L130 BoogieDeclarations]: Found specification of procedure RtlDeleteRegistryValue [2022-02-24 04:31:40,735 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitString [2022-02-24 04:31:40,735 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitUnicodeString [2022-02-24 04:31:40,735 INFO L130 BoogieDeclarations]: Found specification of procedure RtlAnsiStringToUnicodeString [2022-02-24 04:31:40,735 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCopyUnicodeString [2022-02-24 04:31:40,736 INFO L130 BoogieDeclarations]: Found specification of procedure RtlFreeUnicodeString [2022-02-24 04:31:40,736 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCompareMemory [2022-02-24 04:31:40,736 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedIncrement [2022-02-24 04:31:40,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-24 04:31:40,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-24 04:31:40,736 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedDecrement [2022-02-24 04:31:40,736 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeEvent [2022-02-24 04:31:40,736 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-02-24 04:31:40,736 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSemaphore [2022-02-24 04:31:40,737 INFO L130 BoogieDeclarations]: Found specification of procedure KeReleaseSemaphore [2022-02-24 04:31:40,737 INFO L130 BoogieDeclarations]: Found specification of procedure KeDelayExecutionThread [2022-02-24 04:31:40,737 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-02-24 04:31:40,737 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSpinLock [2022-02-24 04:31:40,737 INFO L130 BoogieDeclarations]: Found specification of procedure KfReleaseSpinLock [2022-02-24 04:31:40,737 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2022-02-24 04:31:40,737 INFO L130 BoogieDeclarations]: Found specification of procedure ExFreePool [2022-02-24 04:31:40,737 INFO L130 BoogieDeclarations]: Found specification of procedure ExAcquireFastMutex [2022-02-24 04:31:40,737 INFO L130 BoogieDeclarations]: Found specification of procedure ExReleaseFastMutex [2022-02-24 04:31:40,737 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertHeadList [2022-02-24 04:31:40,737 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertTailList [2022-02-24 04:31:40,737 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedRemoveHeadList [2022-02-24 04:31:40,737 INFO L130 BoogieDeclarations]: Found specification of procedure MmUnlockPages [2022-02-24 04:31:40,737 INFO L130 BoogieDeclarations]: Found specification of procedure MmMapLockedPagesSpecifyCache [2022-02-24 04:31:40,738 INFO L130 BoogieDeclarations]: Found specification of procedure MmAllocateContiguousMemory [2022-02-24 04:31:40,738 INFO L130 BoogieDeclarations]: Found specification of procedure MmFreeContiguousMemory [2022-02-24 04:31:40,739 INFO L130 BoogieDeclarations]: Found specification of procedure MmLockPagableDataSection [2022-02-24 04:31:40,739 INFO L130 BoogieDeclarations]: Found specification of procedure MmResetDriverPaging [2022-02-24 04:31:40,741 INFO L130 BoogieDeclarations]: Found specification of procedure MmPageEntireDriver [2022-02-24 04:31:40,741 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2022-02-24 04:31:40,746 INFO L130 BoogieDeclarations]: Found specification of procedure PsTerminateSystemThread [2022-02-24 04:31:40,746 INFO L130 BoogieDeclarations]: Found specification of procedure IoAllocateMdl [2022-02-24 04:31:40,746 INFO L130 BoogieDeclarations]: Found specification of procedure IoAttachDeviceToDeviceStack [2022-02-24 04:31:40,746 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildAsynchronousFsdRequest [2022-02-24 04:31:40,747 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2022-02-24 04:31:40,747 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-02-24 04:31:40,747 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-02-24 04:31:40,747 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateDevice [2022-02-24 04:31:40,747 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateSymbolicLink [2022-02-24 04:31:40,747 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteDevice [2022-02-24 04:31:40,747 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2022-02-24 04:31:40,747 INFO L130 BoogieDeclarations]: Found specification of procedure IoDetachDevice [2022-02-24 04:31:40,747 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeIrp [2022-02-24 04:31:40,747 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeMdl [2022-02-24 04:31:40,747 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2022-02-24 04:31:40,747 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2022-02-24 04:31:40,747 INFO L130 BoogieDeclarations]: Found specification of procedure IoReleaseCancelSpinLock [2022-02-24 04:31:40,747 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetHardErrorOrVerifyDevice [2022-02-24 04:31:40,747 INFO L130 BoogieDeclarations]: Found specification of procedure IoOpenDeviceRegistryKey [2022-02-24 04:31:40,747 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2022-02-24 04:31:40,747 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-02-24 04:31:40,747 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-02-24 04:31:40,747 INFO L130 BoogieDeclarations]: Found specification of procedure PoStartNextPowerIrp [2022-02-24 04:31:40,747 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2022-02-24 04:31:40,747 INFO L130 BoogieDeclarations]: Found specification of procedure ObfDereferenceObject [2022-02-24 04:31:40,747 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-02-24 04:31:40,748 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-02-24 04:31:40,748 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-02-24 04:31:40,748 INFO L130 BoogieDeclarations]: Found specification of procedure DriverEntry [2022-02-24 04:31:40,748 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioReadWrite [2022-02-24 04:31:40,748 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioDeviceControl [2022-02-24 04:31:40,748 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSendToNextDriver [2022-02-24 04:31:40,748 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioIsPlayActive [2022-02-24 04:31:40,748 INFO L130 BoogieDeclarations]: Found specification of procedure NecSupportNeeded [2022-02-24 04:31:40,748 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioNECDeviceControl [2022-02-24 04:31:40,748 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPioneerDeviceControl [2022-02-24 04:31:40,748 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioDenonDeviceControl [2022-02-24 04:31:40,748 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioHitachiSendPauseCommand [2022-02-24 04:31:40,748 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioHitachiDeviceControl [2022-02-24 04:31:40,748 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio535DeviceControl [2022-02-24 04:31:40,748 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio435DeviceControl [2022-02-24 04:31:40,748 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioAtapiDeviceControl [2022-02-24 04:31:40,748 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioHPCdrDeviceControl [2022-02-24 04:31:40,748 INFO L130 BoogieDeclarations]: Found specification of procedure HpCdrProcessLastSession [2022-02-24 04:31:40,748 INFO L130 BoogieDeclarations]: Found specification of procedure HPCdrCompletion [2022-02-24 04:31:40,748 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPower [2022-02-24 04:31:40,748 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioForwardIrpSynchronous [2022-02-24 04:31:40,748 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioUnload [2022-02-24 04:31:40,748 INFO L130 BoogieDeclarations]: Found specification of procedure SendSrbSynchronous [2022-02-24 04:31:40,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-24 04:31:40,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-24 04:31:40,749 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioAddDevice [2022-02-24 04:31:40,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-02-24 04:31:40,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-02-24 04:31:40,749 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-02-24 04:31:40,749 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSignalCompletion [2022-02-24 04:31:40,749 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioStartDevice [2022-02-24 04:31:40,749 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPnp [2022-02-24 04:31:40,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-02-24 04:31:40,749 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-02-24 04:31:40,749 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-24 04:31:40,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-02-24 04:31:40,749 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_malloc [2022-02-24 04:31:40,749 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-02-24 04:31:40,749 INFO L130 BoogieDeclarations]: Found specification of procedure KeAcquireSpinLockRaiseToDpc [2022-02-24 04:31:40,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-24 04:31:40,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-24 04:31:40,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-24 04:31:40,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-02-24 04:31:40,749 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-02-24 04:31:40,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-02-24 04:31:40,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-02-24 04:31:41,376 INFO L234 CfgBuilder]: Building ICFG [2022-02-24 04:31:41,381 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-24 04:31:41,409 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:31:41,427 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:31:41,428 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:31:41,428 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:31:41,433 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:31:41,433 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:31:41,439 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:31:41,443 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:31:41,444 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:31:41,444 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:31:41,459 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:31:41,459 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:31:41,461 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:31:45,020 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume !false; [2022-02-24 04:31:45,021 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume false; [2022-02-24 04:31:45,031 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:31:45,036 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:31:45,036 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:31:45,037 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:31:45,047 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:31:45,047 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:31:45,047 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:31:45,055 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:31:45,055 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:31:45,055 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:31:45,063 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:31:45,064 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:31:45,066 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:31:51,715 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2022-02-24 04:31:51,715 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2022-02-24 04:31:51,718 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:31:51,814 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##39: assume false; [2022-02-24 04:31:51,814 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##40: assume !false; [2022-02-24 04:31:51,818 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:31:51,822 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:31:51,822 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:31:51,822 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:31:51,852 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2022-02-24 04:31:51,852 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2022-02-24 04:31:51,853 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:31:51,863 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:31:51,863 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:31:51,863 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:31:51,868 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:31:51,868 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:31:51,876 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:31:51,879 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:31:51,879 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:31:51,880 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:31:51,883 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:31:51,883 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:31:52,132 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:31:55,561 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2022-02-24 04:31:55,561 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2022-02-24 04:31:55,569 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:00,115 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume false; [2022-02-24 04:32:00,115 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##22: assume !false; [2022-02-24 04:32:00,120 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:00,138 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-02-24 04:32:00,138 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-02-24 04:32:00,153 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:00,157 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:32:00,157 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:32:00,183 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:00,232 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2022-02-24 04:32:00,232 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2022-02-24 04:32:00,338 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:00,341 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:32:00,341 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:32:00,420 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:00,424 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:32:00,424 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:32:00,425 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:05,813 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume !false; [2022-02-24 04:32:05,813 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume false; [2022-02-24 04:32:05,817 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:05,831 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2022-02-24 04:32:05,831 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2022-02-24 04:32:05,835 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:05,842 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-02-24 04:32:05,842 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-02-24 04:32:05,872 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:05,875 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:32:05,875 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:32:06,284 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:06,323 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2022-02-24 04:32:06,323 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2022-02-24 04:32:06,323 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L3709: #res := 0; [2022-02-24 04:32:06,323 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:06,328 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:32:06,328 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:32:06,376 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:14,065 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2022-02-24 04:32:14,065 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2022-02-24 04:32:14,144 INFO L275 CfgBuilder]: Performing block encoding [2022-02-24 04:32:14,167 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-24 04:32:14,167 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2022-02-24 04:32:14,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:32:14 BoogieIcfgContainer [2022-02-24 04:32:14,170 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-24 04:32:14,172 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-24 04:32:14,172 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-24 04:32:14,177 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-24 04:32:14,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:31:38" (1/3) ... [2022-02-24 04:32:14,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65ad3939 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:32:14, skipping insertion in model container [2022-02-24 04:32:14,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:31:40" (2/3) ... [2022-02-24 04:32:14,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65ad3939 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:32:14, skipping insertion in model container [2022-02-24 04:32:14,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:32:14" (3/3) ... [2022-02-24 04:32:14,181 INFO L111 eAbstractionObserver]: Analyzing ICFG cdaudio.i.cil-2.c [2022-02-24 04:32:14,185 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-24 04:32:14,185 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-24 04:32:14,229 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-24 04:32:14,237 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=QVASR [2022-02-24 04:32:14,237 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-24 04:32:14,284 INFO L276 IsEmpty]: Start isEmpty. Operand has 1253 states, 952 states have (on average 1.5168067226890756) internal successors, (1444), 982 states have internal predecessors, (1444), 248 states have call successors, (248), 43 states have call predecessors, (248), 43 states have return successors, (248), 236 states have call predecessors, (248), 248 states have call successors, (248) [2022-02-24 04:32:14,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-24 04:32:14,293 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:32:14,294 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:32:14,295 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:32:14,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:32:14,299 INFO L85 PathProgramCache]: Analyzing trace with hash -935854329, now seen corresponding path program 1 times [2022-02-24 04:32:14,306 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:32:14,306 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [198727503] [2022-02-24 04:32:14,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:32:14,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:32:14,446 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:32:14,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:32:14,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:32:14,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:32:14,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:32:14,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:32:14,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:32:14,887 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:32:14,887 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [198727503] [2022-02-24 04:32:14,889 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [198727503] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:32:14,889 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:32:14,889 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-24 04:32:14,890 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108911421] [2022-02-24 04:32:14,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:32:14,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-24 04:32:14,895 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:32:14,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-24 04:32:14,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-02-24 04:32:14,927 INFO L87 Difference]: Start difference. First operand has 1253 states, 952 states have (on average 1.5168067226890756) internal successors, (1444), 982 states have internal predecessors, (1444), 248 states have call successors, (248), 43 states have call predecessors, (248), 43 states have return successors, (248), 236 states have call predecessors, (248), 248 states have call successors, (248) Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-02-24 04:32:20,776 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:32:24,032 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:32:26,573 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:32:28,795 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:32:30,815 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:32:32,905 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:32:35,176 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:32:37,201 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:32:39,229 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:32:40,441 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:32:42,631 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:32:44,660 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:32:44,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:32:44,974 INFO L93 Difference]: Finished difference Result 1365 states and 2147 transitions. [2022-02-24 04:32:44,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-24 04:32:44,976 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2022-02-24 04:32:44,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:32:45,019 INFO L225 Difference]: With dead ends: 1365 [2022-02-24 04:32:45,019 INFO L226 Difference]: Without dead ends: 834 [2022-02-24 04:32:45,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-24 04:32:45,027 INFO L933 BasicCegarLoop]: 920 mSDtfsCounter, 460 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 1970 mSolverCounterSat, 187 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 1300 SdHoareTripleChecker+Invalid, 2166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 1970 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.7s IncrementalHoareTripleChecker+Time [2022-02-24 04:32:45,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [484 Valid, 1300 Invalid, 2166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 1970 Invalid, 9 Unknown, 0 Unchecked, 29.7s Time] [2022-02-24 04:32:45,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2022-02-24 04:32:45,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 671. [2022-02-24 04:32:45,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 502 states have (on average 1.4601593625498008) internal successors, (733), 519 states have internal predecessors, (733), 132 states have call successors, (132), 38 states have call predecessors, (132), 36 states have return successors, (115), 115 states have call predecessors, (115), 115 states have call successors, (115) [2022-02-24 04:32:45,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 980 transitions. [2022-02-24 04:32:45,151 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 980 transitions. Word has length 20 [2022-02-24 04:32:45,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:32:45,151 INFO L470 AbstractCegarLoop]: Abstraction has 671 states and 980 transitions. [2022-02-24 04:32:45,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-02-24 04:32:45,152 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 980 transitions. [2022-02-24 04:32:45,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-24 04:32:45,153 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:32:45,153 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:32:45,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-24 04:32:45,154 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:32:45,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:32:45,158 INFO L85 PathProgramCache]: Analyzing trace with hash 3340125, now seen corresponding path program 1 times [2022-02-24 04:32:45,158 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:32:45,158 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1649392902] [2022-02-24 04:32:45,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:32:45,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:32:45,174 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:32:45,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:32:45,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:32:45,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:32:45,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:32:45,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:32:45,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:32:45,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:32:45,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:32:45,405 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:32:45,405 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1649392902] [2022-02-24 04:32:45,405 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1649392902] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:32:45,405 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:32:45,405 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-24 04:32:45,405 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179462406] [2022-02-24 04:32:45,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:32:45,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-24 04:32:45,406 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:32:45,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-24 04:32:45,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-24 04:32:45,407 INFO L87 Difference]: Start difference. First operand 671 states and 980 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-24 04:32:51,034 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:32:52,549 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:32:54,567 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:32:58,193 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:33:00,219 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:33:02,482 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:33:03,675 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:33:04,902 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:33:08,176 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:33:08,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:33:08,786 INFO L93 Difference]: Finished difference Result 1451 states and 2142 transitions. [2022-02-24 04:33:08,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-24 04:33:08,787 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2022-02-24 04:33:08,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:33:08,793 INFO L225 Difference]: With dead ends: 1451 [2022-02-24 04:33:08,793 INFO L226 Difference]: Without dead ends: 1173 [2022-02-24 04:33:08,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-02-24 04:33:08,794 INFO L933 BasicCegarLoop]: 1222 mSDtfsCounter, 1438 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 2700 mSolverCounterSat, 356 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 1965 SdHoareTripleChecker+Invalid, 3061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 2700 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.1s IncrementalHoareTripleChecker+Time [2022-02-24 04:33:08,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1476 Valid, 1965 Invalid, 3061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 2700 Invalid, 5 Unknown, 0 Unchecked, 23.1s Time] [2022-02-24 04:33:08,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2022-02-24 04:33:08,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 983. [2022-02-24 04:33:08,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 983 states, 748 states have (on average 1.4304812834224598) internal successors, (1070), 752 states have internal predecessors, (1070), 167 states have call successors, (167), 58 states have call predecessors, (167), 67 states have return successors, (200), 174 states have call predecessors, (200), 154 states have call successors, (200) [2022-02-24 04:33:08,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 983 states to 983 states and 1437 transitions. [2022-02-24 04:33:08,899 INFO L78 Accepts]: Start accepts. Automaton has 983 states and 1437 transitions. Word has length 25 [2022-02-24 04:33:08,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:33:08,900 INFO L470 AbstractCegarLoop]: Abstraction has 983 states and 1437 transitions. [2022-02-24 04:33:08,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-24 04:33:08,900 INFO L276 IsEmpty]: Start isEmpty. Operand 983 states and 1437 transitions. [2022-02-24 04:33:08,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-02-24 04:33:08,908 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:33:08,908 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:33:08,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-24 04:33:08,908 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:33:08,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:33:08,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1565080577, now seen corresponding path program 1 times [2022-02-24 04:33:08,909 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:33:08,909 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1817778867] [2022-02-24 04:33:08,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:33:08,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:33:08,929 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:33:09,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:09,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:33:09,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:09,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:33:09,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:09,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:33:09,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:09,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:33:09,207 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:33:09,207 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1817778867] [2022-02-24 04:33:09,207 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1817778867] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:33:09,208 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:33:09,208 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-24 04:33:09,208 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854473097] [2022-02-24 04:33:09,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:33:09,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-24 04:33:09,208 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:33:09,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-24 04:33:09,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-24 04:33:09,209 INFO L87 Difference]: Start difference. First operand 983 states and 1437 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-24 04:33:14,876 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:33:16,535 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:33:18,570 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:33:22,029 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:33:24,437 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:33:26,660 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:33:28,862 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:33:29,912 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:33:32,044 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:33:34,081 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:33:36,905 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:33:39,237 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:33:41,034 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:33:42,496 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:33:44,718 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:33:47,490 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:33:49,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:33:49,302 INFO L93 Difference]: Finished difference Result 2287 states and 3438 transitions. [2022-02-24 04:33:49,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-24 04:33:49,304 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 32 [2022-02-24 04:33:49,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:33:49,313 INFO L225 Difference]: With dead ends: 2287 [2022-02-24 04:33:49,313 INFO L226 Difference]: Without dead ends: 1830 [2022-02-24 04:33:49,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-02-24 04:33:49,320 INFO L933 BasicCegarLoop]: 1365 mSDtfsCounter, 1561 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 2321 mSolverCounterSat, 518 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1613 SdHoareTripleChecker+Valid, 2168 SdHoareTripleChecker+Invalid, 2850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 518 IncrementalHoareTripleChecker+Valid, 2321 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.7s IncrementalHoareTripleChecker+Time [2022-02-24 04:33:49,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1613 Valid, 2168 Invalid, 2850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [518 Valid, 2321 Invalid, 11 Unknown, 0 Unchecked, 39.7s Time] [2022-02-24 04:33:49,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1830 states. [2022-02-24 04:33:49,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1830 to 1164. [2022-02-24 04:33:49,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1164 states, 884 states have (on average 1.420814479638009) internal successors, (1256), 887 states have internal predecessors, (1256), 197 states have call successors, (197), 73 states have call predecessors, (197), 82 states have return successors, (269), 205 states have call predecessors, (269), 184 states have call successors, (269) [2022-02-24 04:33:49,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1164 states to 1164 states and 1722 transitions. [2022-02-24 04:33:49,448 INFO L78 Accepts]: Start accepts. Automaton has 1164 states and 1722 transitions. Word has length 32 [2022-02-24 04:33:49,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:33:49,448 INFO L470 AbstractCegarLoop]: Abstraction has 1164 states and 1722 transitions. [2022-02-24 04:33:49,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-24 04:33:49,448 INFO L276 IsEmpty]: Start isEmpty. Operand 1164 states and 1722 transitions. [2022-02-24 04:33:49,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-24 04:33:49,451 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:33:49,451 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:33:49,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-24 04:33:49,451 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:33:49,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:33:49,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1511122576, now seen corresponding path program 1 times [2022-02-24 04:33:49,452 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:33:49,452 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [467061772] [2022-02-24 04:33:49,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:33:49,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:33:49,465 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:33:49,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:49,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:33:49,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:49,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:33:49,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:49,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:33:49,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:49,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:33:49,719 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:33:49,719 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [467061772] [2022-02-24 04:33:49,719 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [467061772] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:33:49,719 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:33:49,720 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-24 04:33:49,720 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549327772] [2022-02-24 04:33:49,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:33:49,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-24 04:33:49,721 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:33:49,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-24 04:33:49,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-02-24 04:33:49,722 INFO L87 Difference]: Start difference. First operand 1164 states and 1722 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-02-24 04:33:57,277 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:34:00,045 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:34:04,260 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:34:07,507 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:34:10,787 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:34:11,938 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:34:15,221 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:34:17,938 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:34:18,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:34:18,676 INFO L93 Difference]: Finished difference Result 2216 states and 3337 transitions. [2022-02-24 04:34:18,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-24 04:34:18,677 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2022-02-24 04:34:18,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:34:18,687 INFO L225 Difference]: With dead ends: 2216 [2022-02-24 04:34:18,687 INFO L226 Difference]: Without dead ends: 1508 [2022-02-24 04:34:18,691 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2022-02-24 04:34:18,692 INFO L933 BasicCegarLoop]: 1356 mSDtfsCounter, 3252 mSDsluCounter, 1270 mSDsCounter, 0 mSdLazyCounter, 3743 mSolverCounterSat, 1171 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3283 SdHoareTripleChecker+Valid, 2626 SdHoareTripleChecker+Invalid, 4921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1171 IncrementalHoareTripleChecker+Valid, 3743 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.4s IncrementalHoareTripleChecker+Time [2022-02-24 04:34:18,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3283 Valid, 2626 Invalid, 4921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1171 Valid, 3743 Invalid, 7 Unknown, 0 Unchecked, 28.4s Time] [2022-02-24 04:34:18,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1508 states. [2022-02-24 04:34:18,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1508 to 1158. [2022-02-24 04:34:18,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1158 states, 879 states have (on average 1.4186575654152447) internal successors, (1247), 882 states have internal predecessors, (1247), 196 states have call successors, (196), 72 states have call predecessors, (196), 82 states have return successors, (267), 205 states have call predecessors, (267), 183 states have call successors, (267) [2022-02-24 04:34:18,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 1710 transitions. [2022-02-24 04:34:18,797 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 1710 transitions. Word has length 33 [2022-02-24 04:34:18,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:34:18,798 INFO L470 AbstractCegarLoop]: Abstraction has 1158 states and 1710 transitions. [2022-02-24 04:34:18,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-02-24 04:34:18,798 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 1710 transitions. [2022-02-24 04:34:18,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-02-24 04:34:18,799 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:34:18,799 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:34:18,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-24 04:34:18,799 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:34:18,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:34:18,799 INFO L85 PathProgramCache]: Analyzing trace with hash -296328802, now seen corresponding path program 1 times [2022-02-24 04:34:18,799 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:34:18,799 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [616621186] [2022-02-24 04:34:18,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:34:18,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:34:18,809 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:34:18,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:18,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:34:18,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:19,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:34:19,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:19,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:34:19,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:19,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:34:19,134 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:34:19,134 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [616621186] [2022-02-24 04:34:19,134 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [616621186] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:34:19,134 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:34:19,134 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-24 04:34:19,134 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759167481] [2022-02-24 04:34:19,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:34:19,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-24 04:34:19,134 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:34:19,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-24 04:34:19,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-24 04:34:19,135 INFO L87 Difference]: Start difference. First operand 1158 states and 1710 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 3 states have internal predecessors, (23), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-24 04:34:23,897 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:34:25,385 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:34:27,205 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:34:29,499 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:34:30,531 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:34:33,762 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:34:35,795 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:34:38,730 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:34:40,208 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:34:40,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:34:40,441 INFO L93 Difference]: Finished difference Result 2061 states and 3001 transitions. [2022-02-24 04:34:40,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-24 04:34:40,442 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 3 states have internal predecessors, (23), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 34 [2022-02-24 04:34:40,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:34:40,450 INFO L225 Difference]: With dead ends: 2061 [2022-02-24 04:34:40,450 INFO L226 Difference]: Without dead ends: 1892 [2022-02-24 04:34:40,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-02-24 04:34:40,452 INFO L933 BasicCegarLoop]: 1099 mSDtfsCounter, 1425 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 1508 mSolverCounterSat, 337 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1469 SdHoareTripleChecker+Valid, 1781 SdHoareTripleChecker+Invalid, 1848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 337 IncrementalHoareTripleChecker+Valid, 1508 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.0s IncrementalHoareTripleChecker+Time [2022-02-24 04:34:40,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1469 Valid, 1781 Invalid, 1848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [337 Valid, 1508 Invalid, 3 Unknown, 0 Unchecked, 21.0s Time] [2022-02-24 04:34:40,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1892 states. [2022-02-24 04:34:40,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1892 to 1623. [2022-02-24 04:34:40,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1623 states, 1251 states have (on average 1.4236610711430855) internal successors, (1781), 1252 states have internal predecessors, (1781), 254 states have call successors, (254), 100 states have call predecessors, (254), 117 states have return successors, (346), 270 states have call predecessors, (346), 244 states have call successors, (346) [2022-02-24 04:34:40,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1623 states to 1623 states and 2381 transitions. [2022-02-24 04:34:40,622 INFO L78 Accepts]: Start accepts. Automaton has 1623 states and 2381 transitions. Word has length 34 [2022-02-24 04:34:40,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:34:40,622 INFO L470 AbstractCegarLoop]: Abstraction has 1623 states and 2381 transitions. [2022-02-24 04:34:40,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 3 states have internal predecessors, (23), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-24 04:34:40,623 INFO L276 IsEmpty]: Start isEmpty. Operand 1623 states and 2381 transitions. [2022-02-24 04:34:40,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-02-24 04:34:40,623 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:34:40,623 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:34:40,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-24 04:34:40,624 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:34:40,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:34:40,624 INFO L85 PathProgramCache]: Analyzing trace with hash -405552640, now seen corresponding path program 1 times [2022-02-24 04:34:40,624 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:34:40,624 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1329709726] [2022-02-24 04:34:40,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:34:40,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:34:40,636 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:34:40,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:40,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:34:40,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:40,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:34:40,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:40,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:34:40,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:40,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:34:40,830 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:34:40,830 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1329709726] [2022-02-24 04:34:40,830 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1329709726] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:34:40,830 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:34:40,830 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-24 04:34:40,830 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267780399] [2022-02-24 04:34:40,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:34:40,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-24 04:34:40,830 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:34:40,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-24 04:34:40,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-24 04:34:40,831 INFO L87 Difference]: Start difference. First operand 1623 states and 2381 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 3 states have internal predecessors, (24), 3 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-24 04:34:44,531 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:34:47,174 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:34:49,449 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:34:51,470 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:34:54,460 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:34:56,546 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:34:58,572 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:35:02,521 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:35:03,866 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:35:05,872 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:35:08,088 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:35:10,112 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:35:10,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:35:10,364 INFO L93 Difference]: Finished difference Result 1760 states and 2607 transitions. [2022-02-24 04:35:10,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-24 04:35:10,364 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 3 states have internal predecessors, (24), 3 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 34 [2022-02-24 04:35:10,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:35:10,373 INFO L225 Difference]: With dead ends: 1760 [2022-02-24 04:35:10,373 INFO L226 Difference]: Without dead ends: 1756 [2022-02-24 04:35:10,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-02-24 04:35:10,374 INFO L933 BasicCegarLoop]: 893 mSDtfsCounter, 472 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 1640 mSolverCounterSat, 172 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 1453 SdHoareTripleChecker+Invalid, 1821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 1640 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.2s IncrementalHoareTripleChecker+Time [2022-02-24 04:35:10,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [496 Valid, 1453 Invalid, 1821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 1640 Invalid, 9 Unknown, 0 Unchecked, 29.2s Time] [2022-02-24 04:35:10,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1756 states. [2022-02-24 04:35:10,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1756 to 1622. [2022-02-24 04:35:10,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1622 states, 1251 states have (on average 1.4220623501199041) internal successors, (1779), 1251 states have internal predecessors, (1779), 253 states have call successors, (253), 100 states have call predecessors, (253), 117 states have return successors, (346), 270 states have call predecessors, (346), 244 states have call successors, (346) [2022-02-24 04:35:10,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1622 states to 1622 states and 2378 transitions. [2022-02-24 04:35:10,551 INFO L78 Accepts]: Start accepts. Automaton has 1622 states and 2378 transitions. Word has length 34 [2022-02-24 04:35:10,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:35:10,551 INFO L470 AbstractCegarLoop]: Abstraction has 1622 states and 2378 transitions. [2022-02-24 04:35:10,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 3 states have internal predecessors, (24), 3 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-24 04:35:10,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1622 states and 2378 transitions. [2022-02-24 04:35:10,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-02-24 04:35:10,554 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:35:10,554 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:35:10,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-24 04:35:10,554 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:35:10,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:35:10,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1694493765, now seen corresponding path program 1 times [2022-02-24 04:35:10,555 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:35:10,555 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [723729713] [2022-02-24 04:35:10,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:35:10,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:35:10,563 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:35:10,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:10,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:35:10,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:10,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:35:10,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:10,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:35:10,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:10,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-02-24 04:35:10,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:10,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:35:10,778 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:35:10,778 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [723729713] [2022-02-24 04:35:10,778 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [723729713] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:35:10,778 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:35:10,778 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-24 04:35:10,778 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571912543] [2022-02-24 04:35:10,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:35:10,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-24 04:35:10,779 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:35:10,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-24 04:35:10,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-02-24 04:35:10,780 INFO L87 Difference]: Start difference. First operand 1622 states and 2378 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 4 states have internal predecessors, (31), 3 states have call successors, (11), 7 states have call predecessors, (11), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-02-24 04:35:16,331 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:35:18,713 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:35:21,394 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:35:23,424 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:35:26,203 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:35:28,222 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:35:30,686 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:35:34,824 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:35:36,857 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:35:38,873 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:35:41,058 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:35:44,006 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:35:47,396 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:35:49,423 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:35:53,760 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:35:55,906 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:35:56,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:35:56,988 INFO L93 Difference]: Finished difference Result 2729 states and 4036 transitions. [2022-02-24 04:35:56,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-24 04:35:56,989 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 4 states have internal predecessors, (31), 3 states have call successors, (11), 7 states have call predecessors, (11), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 46 [2022-02-24 04:35:56,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:35:56,995 INFO L225 Difference]: With dead ends: 2729 [2022-02-24 04:35:56,996 INFO L226 Difference]: Without dead ends: 1590 [2022-02-24 04:35:56,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2022-02-24 04:35:56,998 INFO L933 BasicCegarLoop]: 929 mSDtfsCounter, 2461 mSDsluCounter, 717 mSDsCounter, 0 mSdLazyCounter, 2598 mSolverCounterSat, 1315 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2487 SdHoareTripleChecker+Valid, 1646 SdHoareTripleChecker+Invalid, 3925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1315 IncrementalHoareTripleChecker+Valid, 2598 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.6s IncrementalHoareTripleChecker+Time [2022-02-24 04:35:56,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2487 Valid, 1646 Invalid, 3925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1315 Valid, 2598 Invalid, 12 Unknown, 0 Unchecked, 45.6s Time] [2022-02-24 04:35:57,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1590 states. [2022-02-24 04:35:57,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1590 to 1195. [2022-02-24 04:35:57,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 922 states have (on average 1.4045553145336225) internal successors, (1295), 924 states have internal predecessors, (1295), 182 states have call successors, (182), 75 states have call predecessors, (182), 90 states have return successors, (254), 195 states have call predecessors, (254), 173 states have call successors, (254) [2022-02-24 04:35:57,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1731 transitions. [2022-02-24 04:35:57,205 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1731 transitions. Word has length 46 [2022-02-24 04:35:57,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:35:57,208 INFO L470 AbstractCegarLoop]: Abstraction has 1195 states and 1731 transitions. [2022-02-24 04:35:57,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 4 states have internal predecessors, (31), 3 states have call successors, (11), 7 states have call predecessors, (11), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-02-24 04:35:57,208 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1731 transitions. [2022-02-24 04:35:57,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-24 04:35:57,212 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:35:57,212 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:35:57,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-24 04:35:57,212 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:35:57,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:35:57,213 INFO L85 PathProgramCache]: Analyzing trace with hash -847830418, now seen corresponding path program 1 times [2022-02-24 04:35:57,213 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:35:57,213 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1300382797] [2022-02-24 04:35:57,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:35:57,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:35:57,225 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:35:57,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:57,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:35:57,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:57,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:35:57,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:57,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:35:57,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:57,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-02-24 04:35:57,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:57,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:35:57,519 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:35:57,519 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1300382797] [2022-02-24 04:35:57,519 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1300382797] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:35:57,519 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:35:57,519 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-24 04:35:57,519 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164186089] [2022-02-24 04:35:57,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:35:57,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-24 04:35:57,521 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:35:57,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-24 04:35:57,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-02-24 04:35:57,522 INFO L87 Difference]: Start difference. First operand 1195 states and 1731 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-02-24 04:36:02,809 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:36:05,541 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:36:07,904 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:36:10,073 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:36:12,105 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:36:14,270 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:36:16,463 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:36:19,553 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:36:21,737 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:36:25,436 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:36:26,929 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:36:28,853 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:36:30,270 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:36:30,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:36:30,900 INFO L93 Difference]: Finished difference Result 2147 states and 3201 transitions. [2022-02-24 04:36:30,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-24 04:36:30,900 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 47 [2022-02-24 04:36:30,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:36:30,905 INFO L225 Difference]: With dead ends: 2147 [2022-02-24 04:36:30,905 INFO L226 Difference]: Without dead ends: 1478 [2022-02-24 04:36:30,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-02-24 04:36:30,907 INFO L933 BasicCegarLoop]: 738 mSDtfsCounter, 2285 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 1743 mSolverCounterSat, 1048 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2344 SdHoareTripleChecker+Valid, 1168 SdHoareTripleChecker+Invalid, 2799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1048 IncrementalHoareTripleChecker+Valid, 1743 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.9s IncrementalHoareTripleChecker+Time [2022-02-24 04:36:30,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2344 Valid, 1168 Invalid, 2799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1048 Valid, 1743 Invalid, 8 Unknown, 0 Unchecked, 32.9s Time] [2022-02-24 04:36:30,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1478 states. [2022-02-24 04:36:31,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1478 to 1192. [2022-02-24 04:36:31,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1192 states, 920 states have (on average 1.3967391304347827) internal successors, (1285), 921 states have internal predecessors, (1285), 181 states have call successors, (181), 75 states have call predecessors, (181), 90 states have return successors, (254), 195 states have call predecessors, (254), 173 states have call successors, (254) [2022-02-24 04:36:31,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 1720 transitions. [2022-02-24 04:36:31,100 INFO L78 Accepts]: Start accepts. Automaton has 1192 states and 1720 transitions. Word has length 47 [2022-02-24 04:36:31,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:36:31,100 INFO L470 AbstractCegarLoop]: Abstraction has 1192 states and 1720 transitions. [2022-02-24 04:36:31,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-02-24 04:36:31,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1192 states and 1720 transitions. [2022-02-24 04:36:31,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-24 04:36:31,104 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:36:31,104 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:36:31,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-24 04:36:31,105 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:36:31,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:36:31,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1701879472, now seen corresponding path program 1 times [2022-02-24 04:36:31,106 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:36:31,106 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078381623] [2022-02-24 04:36:31,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:36:31,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:36:31,115 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:36:31,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:31,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:36:31,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:31,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:36:31,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:31,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:36:31,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:31,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-24 04:36:31,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:31,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 04:36:31,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:31,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:36:31,403 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:36:31,403 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078381623] [2022-02-24 04:36:31,403 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2078381623] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:36:31,403 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:36:31,403 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-24 04:36:31,403 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549061448] [2022-02-24 04:36:31,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:36:31,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-24 04:36:31,404 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:36:31,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-24 04:36:31,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-02-24 04:36:31,404 INFO L87 Difference]: Start difference. First operand 1192 states and 1720 transitions. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 7 states have internal predecessors, (35), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-02-24 04:36:43,556 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:36:45,085 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:36:47,783 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:36:50,704 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:36:53,261 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:36:55,576 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:36:59,311 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:37:01,344 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:37:02,914 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:37:04,979 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:37:07,925 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:37:12,195 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:37:14,890 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:37:16,710 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:37:17,812 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:37:20,087 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:37:21,208 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:37:24,385 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:37:25,613 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:37:27,967 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:37:30,006 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:37:30,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:37:30,939 INFO L93 Difference]: Finished difference Result 1825 states and 2709 transitions. [2022-02-24 04:37:30,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-24 04:37:30,940 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 7 states have internal predecessors, (35), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 47 [2022-02-24 04:37:30,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:37:30,945 INFO L225 Difference]: With dead ends: 1825 [2022-02-24 04:37:30,946 INFO L226 Difference]: Without dead ends: 1764 [2022-02-24 04:37:30,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2022-02-24 04:37:30,947 INFO L933 BasicCegarLoop]: 1036 mSDtfsCounter, 2858 mSDsluCounter, 1948 mSDsCounter, 0 mSdLazyCounter, 4595 mSolverCounterSat, 1393 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2890 SdHoareTripleChecker+Valid, 2984 SdHoareTripleChecker+Invalid, 6000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1393 IncrementalHoareTripleChecker+Valid, 4595 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 58.5s IncrementalHoareTripleChecker+Time [2022-02-24 04:37:30,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2890 Valid, 2984 Invalid, 6000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1393 Valid, 4595 Invalid, 12 Unknown, 0 Unchecked, 58.5s Time] [2022-02-24 04:37:30,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1764 states. [2022-02-24 04:37:31,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1764 to 1264. [2022-02-24 04:37:31,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1264 states, 974 states have (on average 1.3901437371663243) internal successors, (1354), 974 states have internal predecessors, (1354), 190 states have call successors, (190), 83 states have call predecessors, (190), 99 states have return successors, (264), 206 states have call predecessors, (264), 182 states have call successors, (264) [2022-02-24 04:37:31,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 1808 transitions. [2022-02-24 04:37:31,140 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 1808 transitions. Word has length 47 [2022-02-24 04:37:31,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:37:31,140 INFO L470 AbstractCegarLoop]: Abstraction has 1264 states and 1808 transitions. [2022-02-24 04:37:31,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 7 states have internal predecessors, (35), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-02-24 04:37:31,140 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 1808 transitions. [2022-02-24 04:37:31,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-02-24 04:37:31,142 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:37:31,142 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:37:31,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-24 04:37:31,143 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:37:31,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:37:31,143 INFO L85 PathProgramCache]: Analyzing trace with hash 517296651, now seen corresponding path program 1 times [2022-02-24 04:37:31,143 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:37:31,143 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [979254426] [2022-02-24 04:37:31,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:37:31,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:37:31,153 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:37:31,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:31,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:37:31,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:31,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:37:31,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:31,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:37:31,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:31,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-24 04:37:31,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:31,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 04:37:31,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:31,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:37:31,414 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:37:31,414 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [979254426] [2022-02-24 04:37:31,414 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [979254426] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:37:31,414 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:37:31,414 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-24 04:37:31,414 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742293622] [2022-02-24 04:37:31,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:37:31,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-24 04:37:31,415 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:37:31,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-24 04:37:31,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-02-24 04:37:31,415 INFO L87 Difference]: Start difference. First operand 1264 states and 1808 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 4 states have internal predecessors, (37), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-24 04:37:39,835 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:37:41,564 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:37:43,969 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:37:46,002 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:37:47,373 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:37:52,338 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:37:54,464 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:37:57,672 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:38:00,523 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:38:03,406 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:38:05,686 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:38:07,721 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:38:09,741 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:38:12,686 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:38:14,145 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:38:16,452 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:38:17,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:38:17,534 INFO L93 Difference]: Finished difference Result 1582 states and 2358 transitions. [2022-02-24 04:38:17,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-24 04:38:17,535 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 4 states have internal predecessors, (37), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 49 [2022-02-24 04:38:17,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:38:17,542 INFO L225 Difference]: With dead ends: 1582 [2022-02-24 04:38:17,542 INFO L226 Difference]: Without dead ends: 1554 [2022-02-24 04:38:17,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-02-24 04:38:17,543 INFO L933 BasicCegarLoop]: 745 mSDtfsCounter, 1775 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 3005 mSolverCounterSat, 711 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1823 SdHoareTripleChecker+Valid, 1546 SdHoareTripleChecker+Invalid, 3726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 711 IncrementalHoareTripleChecker+Valid, 3005 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.4s IncrementalHoareTripleChecker+Time [2022-02-24 04:38:17,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1823 Valid, 1546 Invalid, 3726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [711 Valid, 3005 Invalid, 10 Unknown, 0 Unchecked, 45.4s Time] [2022-02-24 04:38:17,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2022-02-24 04:38:17,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1267. [2022-02-24 04:38:17,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1267 states, 977 states have (on average 1.3899692937563972) internal successors, (1358), 977 states have internal predecessors, (1358), 190 states have call successors, (190), 83 states have call predecessors, (190), 99 states have return successors, (264), 206 states have call predecessors, (264), 182 states have call successors, (264) [2022-02-24 04:38:17,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1267 states to 1267 states and 1812 transitions. [2022-02-24 04:38:17,799 INFO L78 Accepts]: Start accepts. Automaton has 1267 states and 1812 transitions. Word has length 49 [2022-02-24 04:38:17,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:38:17,799 INFO L470 AbstractCegarLoop]: Abstraction has 1267 states and 1812 transitions. [2022-02-24 04:38:17,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 4 states have internal predecessors, (37), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-24 04:38:17,799 INFO L276 IsEmpty]: Start isEmpty. Operand 1267 states and 1812 transitions. [2022-02-24 04:38:17,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-02-24 04:38:17,801 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:38:17,802 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:38:17,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-02-24 04:38:17,802 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:38:17,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:38:17,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1476848055, now seen corresponding path program 1 times [2022-02-24 04:38:17,803 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:38:17,803 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2143346396] [2022-02-24 04:38:17,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:38:17,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:38:17,813 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:38:17,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:17,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:38:17,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:17,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:38:17,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:17,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:38:17,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:18,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-24 04:38:18,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:18,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 04:38:18,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:18,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:38:18,107 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:38:18,107 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2143346396] [2022-02-24 04:38:18,108 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2143346396] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:38:18,108 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:38:18,108 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-24 04:38:18,108 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492292487] [2022-02-24 04:38:18,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:38:18,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-24 04:38:18,108 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:38:18,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-24 04:38:18,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-02-24 04:38:18,109 INFO L87 Difference]: Start difference. First operand 1267 states and 1812 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 7 states have internal predecessors, (37), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-02-24 04:38:26,026 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:38:29,338 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:38:31,368 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:38:32,706 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:38:34,727 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:38:37,497 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:38:38,962 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:38:41,890 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:38:44,946 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:38:48,048 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:38:50,092 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:38:52,122 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:38:54,160 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:38:57,509 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:38:59,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:38:59,141 INFO L93 Difference]: Finished difference Result 1617 states and 2404 transitions. [2022-02-24 04:38:59,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-24 04:38:59,142 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 7 states have internal predecessors, (37), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 49 [2022-02-24 04:38:59,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:38:59,148 INFO L225 Difference]: With dead ends: 1617 [2022-02-24 04:38:59,148 INFO L226 Difference]: Without dead ends: 1511 [2022-02-24 04:38:59,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2022-02-24 04:38:59,150 INFO L933 BasicCegarLoop]: 733 mSDtfsCounter, 2841 mSDsluCounter, 1252 mSDsCounter, 0 mSdLazyCounter, 3023 mSolverCounterSat, 1340 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2889 SdHoareTripleChecker+Valid, 1985 SdHoareTripleChecker+Invalid, 4373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1340 IncrementalHoareTripleChecker+Valid, 3023 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.1s IncrementalHoareTripleChecker+Time [2022-02-24 04:38:59,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2889 Valid, 1985 Invalid, 4373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1340 Valid, 3023 Invalid, 10 Unknown, 0 Unchecked, 40.1s Time] [2022-02-24 04:38:59,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1511 states. [2022-02-24 04:38:59,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1511 to 1229. [2022-02-24 04:38:59,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 947 states have (on average 1.3970432946145723) internal successors, (1323), 954 states have internal predecessors, (1323), 190 states have call successors, (190), 83 states have call predecessors, (190), 91 states have return successors, (249), 191 states have call predecessors, (249), 182 states have call successors, (249) [2022-02-24 04:38:59,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 1762 transitions. [2022-02-24 04:38:59,349 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 1762 transitions. Word has length 49 [2022-02-24 04:38:59,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:38:59,349 INFO L470 AbstractCegarLoop]: Abstraction has 1229 states and 1762 transitions. [2022-02-24 04:38:59,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 7 states have internal predecessors, (37), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-02-24 04:38:59,349 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 1762 transitions. [2022-02-24 04:38:59,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-02-24 04:38:59,351 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:38:59,351 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:38:59,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-02-24 04:38:59,351 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:38:59,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:38:59,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1330155253, now seen corresponding path program 1 times [2022-02-24 04:38:59,352 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:38:59,352 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2016321537] [2022-02-24 04:38:59,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:38:59,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:38:59,375 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:38:59,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:59,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:38:59,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:59,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:38:59,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:59,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:38:59,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:59,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-24 04:38:59,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:59,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 04:38:59,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:59,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:38:59,599 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:38:59,599 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2016321537] [2022-02-24 04:38:59,599 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2016321537] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:38:59,599 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:38:59,599 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-24 04:38:59,599 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166457738] [2022-02-24 04:38:59,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:38:59,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-24 04:38:59,600 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:38:59,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-24 04:38:59,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-02-24 04:38:59,601 INFO L87 Difference]: Start difference. First operand 1229 states and 1762 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-02-24 04:39:06,905 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:39:08,926 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:39:11,619 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:39:15,269 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:39:18,062 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:39:20,253 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:39:22,275 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:39:24,501 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:39:26,526 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:39:27,919 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:39:30,011 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:39:32,038 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:39:32,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:39:32,218 INFO L93 Difference]: Finished difference Result 1524 states and 2281 transitions. [2022-02-24 04:39:32,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-24 04:39:32,218 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 49 [2022-02-24 04:39:32,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:39:32,223 INFO L225 Difference]: With dead ends: 1524 [2022-02-24 04:39:32,223 INFO L226 Difference]: Without dead ends: 1505 [2022-02-24 04:39:32,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-02-24 04:39:32,224 INFO L933 BasicCegarLoop]: 740 mSDtfsCounter, 2279 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 1197 mSolverCounterSat, 1030 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2326 SdHoareTripleChecker+Valid, 1136 SdHoareTripleChecker+Invalid, 2237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1030 IncrementalHoareTripleChecker+Valid, 1197 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.9s IncrementalHoareTripleChecker+Time [2022-02-24 04:39:32,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2326 Valid, 1136 Invalid, 2237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1030 Valid, 1197 Invalid, 10 Unknown, 0 Unchecked, 31.9s Time] [2022-02-24 04:39:32,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2022-02-24 04:39:32,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 1212. [2022-02-24 04:39:32,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1212 states, 934 states have (on average 1.3982869379014988) internal successors, (1306), 940 states have internal predecessors, (1306), 189 states have call successors, (189), 83 states have call predecessors, (189), 88 states have return successors, (246), 188 states have call predecessors, (246), 182 states have call successors, (246) [2022-02-24 04:39:32,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 1741 transitions. [2022-02-24 04:39:32,431 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 1741 transitions. Word has length 49 [2022-02-24 04:39:32,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:39:32,431 INFO L470 AbstractCegarLoop]: Abstraction has 1212 states and 1741 transitions. [2022-02-24 04:39:32,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-02-24 04:39:32,431 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 1741 transitions. [2022-02-24 04:39:32,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-02-24 04:39:32,433 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:39:32,433 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:39:32,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-02-24 04:39:32,433 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:39:32,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:39:32,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1344500162, now seen corresponding path program 1 times [2022-02-24 04:39:32,434 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:39:32,434 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1163048667] [2022-02-24 04:39:32,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:39:32,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:39:32,444 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:39:32,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:32,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:39:32,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:32,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:39:32,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:32,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:39:32,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:32,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-24 04:39:32,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:32,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 04:39:32,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:32,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:39:32,645 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:39:32,645 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1163048667] [2022-02-24 04:39:32,645 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1163048667] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:39:32,645 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:39:32,645 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-24 04:39:32,646 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548700811] [2022-02-24 04:39:32,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:39:32,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-24 04:39:32,646 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:39:32,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-24 04:39:32,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-02-24 04:39:32,646 INFO L87 Difference]: Start difference. First operand 1212 states and 1741 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-02-24 04:39:39,069 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:39:41,093 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:39:44,812 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:39:46,838 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:39:49,422 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:39:51,438 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:39:53,462 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:39:57,023 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:39:59,050 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:40:01,076 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:40:03,209 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:40:05,593 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:40:08,816 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:40:10,252 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:40:12,407 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:40:13,697 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:40:15,887 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:40:18,350 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:40:20,809 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:40:23,100 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:40:24,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:40:24,127 INFO L93 Difference]: Finished difference Result 1829 states and 2715 transitions. [2022-02-24 04:40:24,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-24 04:40:24,127 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 49 [2022-02-24 04:40:24,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:40:24,134 INFO L225 Difference]: With dead ends: 1829 [2022-02-24 04:40:24,134 INFO L226 Difference]: Without dead ends: 1818 [2022-02-24 04:40:24,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-02-24 04:40:24,141 INFO L933 BasicCegarLoop]: 1089 mSDtfsCounter, 2057 mSDsluCounter, 1033 mSDsCounter, 0 mSdLazyCounter, 2063 mSolverCounterSat, 1073 mSolverCounterUnsat, 17 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2112 SdHoareTripleChecker+Valid, 2122 SdHoareTripleChecker+Invalid, 3153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1073 IncrementalHoareTripleChecker+Valid, 2063 IncrementalHoareTripleChecker+Invalid, 17 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.8s IncrementalHoareTripleChecker+Time [2022-02-24 04:40:24,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2112 Valid, 2122 Invalid, 3153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1073 Valid, 2063 Invalid, 17 Unknown, 0 Unchecked, 50.8s Time] [2022-02-24 04:40:24,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1818 states. [2022-02-24 04:40:24,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1818 to 1241. [2022-02-24 04:40:24,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1241 states, 956 states have (on average 1.3901673640167365) internal successors, (1329), 962 states have internal predecessors, (1329), 189 states have call successors, (189), 83 states have call predecessors, (189), 95 states have return successors, (253), 195 states have call predecessors, (253), 182 states have call successors, (253) [2022-02-24 04:40:24,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1241 states to 1241 states and 1771 transitions. [2022-02-24 04:40:24,410 INFO L78 Accepts]: Start accepts. Automaton has 1241 states and 1771 transitions. Word has length 49 [2022-02-24 04:40:24,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:40:24,410 INFO L470 AbstractCegarLoop]: Abstraction has 1241 states and 1771 transitions. [2022-02-24 04:40:24,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-02-24 04:40:24,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states and 1771 transitions. [2022-02-24 04:40:24,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-02-24 04:40:24,412 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:40:24,412 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:40:24,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-02-24 04:40:24,412 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:40:24,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:40:24,413 INFO L85 PathProgramCache]: Analyzing trace with hash -409690045, now seen corresponding path program 1 times [2022-02-24 04:40:24,413 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:40:24,414 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1314226656] [2022-02-24 04:40:24,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:40:24,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:40:24,422 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:40:24,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:24,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:40:24,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:24,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:40:24,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:24,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:40:24,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:24,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-02-24 04:40:24,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:24,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-02-24 04:40:24,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:24,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:40:24,628 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:40:24,628 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1314226656] [2022-02-24 04:40:24,628 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1314226656] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:40:24,628 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:40:24,628 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-24 04:40:24,628 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093743407] [2022-02-24 04:40:24,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:40:24,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-24 04:40:24,629 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:40:24,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-24 04:40:24,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-02-24 04:40:24,629 INFO L87 Difference]: Start difference. First operand 1241 states and 1771 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (11), 8 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-24 04:40:32,646 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:40:34,678 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:40:36,217 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:40:38,339 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:40:41,976 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:40:44,012 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:40:46,080 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:40:48,104 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:40:50,479 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:40:54,217 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:40:56,373 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:40:59,500 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:41:01,770 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:41:04,761 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:41:04,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:41:04,980 INFO L93 Difference]: Finished difference Result 2236 states and 3273 transitions. [2022-02-24 04:41:04,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-24 04:41:04,980 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (11), 8 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 54 [2022-02-24 04:41:04,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:41:05,001 INFO L225 Difference]: With dead ends: 2236 [2022-02-24 04:41:05,001 INFO L226 Difference]: Without dead ends: 1589 [2022-02-24 04:41:05,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-02-24 04:41:05,005 INFO L933 BasicCegarLoop]: 874 mSDtfsCounter, 2128 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 2022 mSolverCounterSat, 1090 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2187 SdHoareTripleChecker+Valid, 1842 SdHoareTripleChecker+Invalid, 3124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1090 IncrementalHoareTripleChecker+Valid, 2022 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.7s IncrementalHoareTripleChecker+Time [2022-02-24 04:41:05,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2187 Valid, 1842 Invalid, 3124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1090 Valid, 2022 Invalid, 12 Unknown, 0 Unchecked, 39.7s Time] [2022-02-24 04:41:05,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1589 states. [2022-02-24 04:41:05,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1589 to 1241. [2022-02-24 04:41:05,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1241 states, 956 states have (on average 1.389121338912134) internal successors, (1328), 962 states have internal predecessors, (1328), 189 states have call successors, (189), 83 states have call predecessors, (189), 95 states have return successors, (253), 195 states have call predecessors, (253), 182 states have call successors, (253) [2022-02-24 04:41:05,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1241 states to 1241 states and 1770 transitions. [2022-02-24 04:41:05,333 INFO L78 Accepts]: Start accepts. Automaton has 1241 states and 1770 transitions. Word has length 54 [2022-02-24 04:41:05,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:41:05,333 INFO L470 AbstractCegarLoop]: Abstraction has 1241 states and 1770 transitions. [2022-02-24 04:41:05,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (11), 8 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-24 04:41:05,333 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states and 1770 transitions. [2022-02-24 04:41:05,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-02-24 04:41:05,335 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:41:05,335 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:41:05,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-02-24 04:41:05,336 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:41:05,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:41:05,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1722441850, now seen corresponding path program 1 times [2022-02-24 04:41:05,336 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:41:05,336 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963394468] [2022-02-24 04:41:05,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:41:05,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:41:05,344 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:41:05,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:05,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:41:05,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:05,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:41:05,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:05,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:41:05,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:05,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-24 04:41:05,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:05,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 04:41:05,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:05,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:41:05,711 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:41:05,711 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1963394468] [2022-02-24 04:41:05,711 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1963394468] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:41:05,711 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:41:05,711 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-24 04:41:05,711 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95211423] [2022-02-24 04:41:05,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:41:05,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-24 04:41:05,711 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:41:05,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-24 04:41:05,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-02-24 04:41:05,712 INFO L87 Difference]: Start difference. First operand 1241 states and 1770 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 7 states have internal predecessors, (38), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-02-24 04:41:12,285 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:41:22,173 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:41:25,898 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:41:27,931 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:41:29,970 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:41:31,996 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:41:34,021 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:41:36,053 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:41:37,980 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:41:39,291 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:41:41,485 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:41:43,750 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:41:44,780 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:41:47,175 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:41:49,206 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:41:50,407 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:41:56,586 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:42:01,053 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:42:03,088 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:42:05,109 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:42:07,136 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:42:09,075 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:42:11,106 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:42:12,278 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:42:14,685 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:42:16,277 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:42:19,131 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:42:20,443 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:42:24,849 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:42:25,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:42:25,799 INFO L93 Difference]: Finished difference Result 1536 states and 2281 transitions. [2022-02-24 04:42:25,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-24 04:42:25,799 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 7 states have internal predecessors, (38), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 50 [2022-02-24 04:42:25,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:42:25,804 INFO L225 Difference]: With dead ends: 1536 [2022-02-24 04:42:25,804 INFO L226 Difference]: Without dead ends: 1532 [2022-02-24 04:42:25,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-02-24 04:42:25,807 INFO L933 BasicCegarLoop]: 789 mSDtfsCounter, 1234 mSDsluCounter, 2747 mSDsCounter, 0 mSdLazyCounter, 5792 mSolverCounterSat, 760 mSolverCounterUnsat, 18 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 77.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1261 SdHoareTripleChecker+Valid, 3536 SdHoareTripleChecker+Invalid, 6570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 760 IncrementalHoareTripleChecker+Valid, 5792 IncrementalHoareTripleChecker+Invalid, 18 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 79.3s IncrementalHoareTripleChecker+Time [2022-02-24 04:42:25,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1261 Valid, 3536 Invalid, 6570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [760 Valid, 5792 Invalid, 18 Unknown, 0 Unchecked, 79.3s Time] [2022-02-24 04:42:25,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1532 states. [2022-02-24 04:42:26,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1532 to 1259. [2022-02-24 04:42:26,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1259 states, 972 states have (on average 1.3837448559670782) internal successors, (1345), 978 states have internal predecessors, (1345), 189 states have call successors, (189), 83 states have call predecessors, (189), 97 states have return successors, (255), 197 states have call predecessors, (255), 182 states have call successors, (255) [2022-02-24 04:42:26,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1259 states to 1259 states and 1789 transitions. [2022-02-24 04:42:26,061 INFO L78 Accepts]: Start accepts. Automaton has 1259 states and 1789 transitions. Word has length 50 [2022-02-24 04:42:26,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:42:26,062 INFO L470 AbstractCegarLoop]: Abstraction has 1259 states and 1789 transitions. [2022-02-24 04:42:26,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 7 states have internal predecessors, (38), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-02-24 04:42:26,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1259 states and 1789 transitions. [2022-02-24 04:42:26,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-02-24 04:42:26,063 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:42:26,063 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:42:26,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-02-24 04:42:26,064 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:42:26,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:42:26,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1722165020, now seen corresponding path program 1 times [2022-02-24 04:42:26,064 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:42:26,064 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [537323891] [2022-02-24 04:42:26,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:42:26,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:42:26,072 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:42:26,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:26,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:42:26,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:26,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:42:26,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:26,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:42:26,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:26,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-24 04:42:26,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:26,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 04:42:26,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:26,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:42:26,269 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:42:26,269 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [537323891] [2022-02-24 04:42:26,269 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [537323891] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:42:26,269 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:42:26,269 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-24 04:42:26,269 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100635764] [2022-02-24 04:42:26,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:42:26,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-24 04:42:26,269 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:42:26,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-24 04:42:26,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-02-24 04:42:26,270 INFO L87 Difference]: Start difference. First operand 1259 states and 1789 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-24 04:42:35,358 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:42:37,395 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:42:39,415 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:42:42,165 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:42:44,698 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:42:46,369 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:42:52,221 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:42:54,244 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:42:56,875 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:42:58,918 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:43:01,191 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:43:05,138 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:43:07,165 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:43:09,199 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:43:11,598 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:43:12,722 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:43:14,749 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:43:17,904 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:43:21,483 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:43:24,091 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:43:25,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:43:25,042 INFO L93 Difference]: Finished difference Result 1831 states and 2708 transitions. [2022-02-24 04:43:25,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-24 04:43:25,043 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 50 [2022-02-24 04:43:25,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:43:25,048 INFO L225 Difference]: With dead ends: 1831 [2022-02-24 04:43:25,048 INFO L226 Difference]: Without dead ends: 1808 [2022-02-24 04:43:25,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2022-02-24 04:43:25,049 INFO L933 BasicCegarLoop]: 1007 mSDtfsCounter, 2865 mSDsluCounter, 1212 mSDsCounter, 0 mSdLazyCounter, 3685 mSolverCounterSat, 1299 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 55.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2918 SdHoareTripleChecker+Valid, 2219 SdHoareTripleChecker+Invalid, 5000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1299 IncrementalHoareTripleChecker+Valid, 3685 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 57.7s IncrementalHoareTripleChecker+Time [2022-02-24 04:43:25,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2918 Valid, 2219 Invalid, 5000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1299 Valid, 3685 Invalid, 16 Unknown, 0 Unchecked, 57.7s Time] [2022-02-24 04:43:25,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1808 states. [2022-02-24 04:43:25,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1808 to 1242. [2022-02-24 04:43:25,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1242 states, 957 states have (on average 1.387669801462905) internal successors, (1328), 963 states have internal predecessors, (1328), 189 states have call successors, (189), 83 states have call predecessors, (189), 95 states have return successors, (253), 195 states have call predecessors, (253), 182 states have call successors, (253) [2022-02-24 04:43:25,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1242 states to 1242 states and 1770 transitions. [2022-02-24 04:43:25,308 INFO L78 Accepts]: Start accepts. Automaton has 1242 states and 1770 transitions. Word has length 50 [2022-02-24 04:43:25,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:43:25,308 INFO L470 AbstractCegarLoop]: Abstraction has 1242 states and 1770 transitions. [2022-02-24 04:43:25,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-24 04:43:25,309 INFO L276 IsEmpty]: Start isEmpty. Operand 1242 states and 1770 transitions. [2022-02-24 04:43:25,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-24 04:43:25,310 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:43:25,310 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:43:25,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-02-24 04:43:25,310 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:43:25,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:43:25,311 INFO L85 PathProgramCache]: Analyzing trace with hash 150058857, now seen corresponding path program 1 times [2022-02-24 04:43:25,311 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:43:25,311 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1099669641] [2022-02-24 04:43:25,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:43:25,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:43:25,319 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:43:25,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:25,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:43:25,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:25,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:43:25,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:25,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:43:25,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:25,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-24 04:43:25,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:25,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 04:43:25,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:25,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:43:25,766 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:43:25,766 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1099669641] [2022-02-24 04:43:25,766 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1099669641] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:43:25,766 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:43:25,766 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-24 04:43:25,766 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483938071] [2022-02-24 04:43:25,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:43:25,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-24 04:43:25,766 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:43:25,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-24 04:43:25,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-02-24 04:43:25,767 INFO L87 Difference]: Start difference. First operand 1242 states and 1770 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 7 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-02-24 04:43:33,526 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:43:44,888 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:43:47,812 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:43:48,973 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:43:51,010 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:43:52,123 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:43:54,157 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:43:56,192 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:43:59,350 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:44:00,647 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:44:04,340 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:44:07,257 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:44:13,903 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:44:15,939 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:44:17,971 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:44:20,049 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:44:21,912 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:44:27,026 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:44:30,852 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:44:33,465 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:44:35,010 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:44:37,458 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:44:38,807 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:44:43,461 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:44:49,149 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:44:51,133 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:44:51,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:44:51,773 INFO L93 Difference]: Finished difference Result 1535 states and 2278 transitions. [2022-02-24 04:44:51,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-24 04:44:51,774 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 7 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 51 [2022-02-24 04:44:51,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:44:51,781 INFO L225 Difference]: With dead ends: 1535 [2022-02-24 04:44:51,781 INFO L226 Difference]: Without dead ends: 1512 [2022-02-24 04:44:51,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-02-24 04:44:51,782 INFO L933 BasicCegarLoop]: 798 mSDtfsCounter, 1712 mSDsluCounter, 2747 mSDsCounter, 0 mSdLazyCounter, 5840 mSolverCounterSat, 1041 mSolverCounterUnsat, 17 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 82.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1739 SdHoareTripleChecker+Valid, 3545 SdHoareTripleChecker+Invalid, 6898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1041 IncrementalHoareTripleChecker+Valid, 5840 IncrementalHoareTripleChecker+Invalid, 17 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 85.1s IncrementalHoareTripleChecker+Time [2022-02-24 04:44:51,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1739 Valid, 3545 Invalid, 6898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1041 Valid, 5840 Invalid, 17 Unknown, 0 Unchecked, 85.1s Time] [2022-02-24 04:44:51,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1512 states. [2022-02-24 04:44:52,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1512 to 1241. [2022-02-24 04:44:52,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1241 states, 956 states have (on average 1.387029288702929) internal successors, (1326), 962 states have internal predecessors, (1326), 189 states have call successors, (189), 83 states have call predecessors, (189), 95 states have return successors, (253), 195 states have call predecessors, (253), 182 states have call successors, (253) [2022-02-24 04:44:52,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1241 states to 1241 states and 1768 transitions. [2022-02-24 04:44:52,210 INFO L78 Accepts]: Start accepts. Automaton has 1241 states and 1768 transitions. Word has length 51 [2022-02-24 04:44:52,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:44:52,210 INFO L470 AbstractCegarLoop]: Abstraction has 1241 states and 1768 transitions. [2022-02-24 04:44:52,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 7 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-02-24 04:44:52,211 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states and 1768 transitions. [2022-02-24 04:44:52,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-24 04:44:52,213 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:44:52,213 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:44:52,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-02-24 04:44:52,213 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:44:52,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:44:52,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1436524759, now seen corresponding path program 1 times [2022-02-24 04:44:52,214 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:44:52,214 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [627217763] [2022-02-24 04:44:52,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:44:52,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:44:52,232 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:44:52,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:44:52,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:44:52,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:44:52,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:44:52,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:44:52,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:44:52,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:44:52,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-24 04:44:52,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:44:52,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 04:44:52,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:44:52,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:44:52,705 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:44:52,705 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [627217763] [2022-02-24 04:44:52,705 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [627217763] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:44:52,705 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:44:52,706 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-24 04:44:52,706 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989204347] [2022-02-24 04:44:52,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:44:52,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-24 04:44:52,706 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:44:52,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-24 04:44:52,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-02-24 04:44:52,707 INFO L87 Difference]: Start difference. First operand 1241 states and 1768 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 7 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-02-24 04:44:56,165 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:44:59,723 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:45:07,032 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:45:13,417 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:45:16,238 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:45:18,281 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:45:20,319 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:45:22,352 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:45:24,380 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:45:26,324 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:45:28,983 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:45:32,623 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:45:35,031 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:45:36,342 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:45:42,143 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:45:44,184 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:45:46,076 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:45:49,093 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:45:51,127 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:45:52,584 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:45:56,456 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:45:58,494 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:46:00,435 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:46:01,545 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:46:03,565 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []