/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-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-07 00:53:51,856 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-07 00:53:51,872 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-07 00:53:51,943 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-07 00:53:51,974 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-07 00:53:51,975 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-07 00:53:51,976 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-07 00:53:51,976 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-07 00:53:51,977 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-07 00:53:51,978 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-07 00:53:51,979 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-07 00:53:51,980 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-07 00:53:51,981 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-07 00:53:51,982 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-07 00:53:51,983 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-07 00:53:51,984 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-07 00:53:51,985 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-07 00:53:51,987 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-07 00:53:51,994 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-07 00:53:51,994 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-07 00:53:52,014 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-07 00:53:52,015 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-04-07 00:53:52,027 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-07 00:53:52,027 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-07 00:53:52,028 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-07 00:53:52,029 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-07 00:53:52,029 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-07 00:53:52,029 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-07 00:53:52,029 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-07 00:53:52,029 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-07 00:53:52,029 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-07 00:53:52,029 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-07 00:53:52,030 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-07 00:53:52,030 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-07 00:53:52,030 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-07 00:53:52,030 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-07 00:53:52,030 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-07 00:53:52,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-07 00:53:52,031 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-07 00:53:52,031 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-07 00:53:52,031 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-07 00:53:52,048 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-07 00:53:52,048 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-07 00:53:52,048 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-04-07 00:53:52,049 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-07 00:53:52,484 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-07 00:53:52,524 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-07 00:53:52,529 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-07 00:53:52,539 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-07 00:53:52,540 INFO L275 PluginConnector]: CDTParser initialized [2022-04-07 00:53:52,542 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers/cdaudio.i.cil-1.c [2022-04-07 00:53:52,659 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e1c7c511/37a7f448ace5451680bc9759c2b3f173/FLAGee13729ce [2022-04-07 00:53:53,907 INFO L306 CDTParser]: Found 1 translation units. [2022-04-07 00:53:53,908 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/cdaudio.i.cil-1.c [2022-04-07 00:53:53,993 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e1c7c511/37a7f448ace5451680bc9759c2b3f173/FLAGee13729ce [2022-04-07 00:53:54,226 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e1c7c511/37a7f448ace5451680bc9759c2b3f173 [2022-04-07 00:53:54,229 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-07 00:53:54,230 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-07 00:53:54,232 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-07 00:53:54,232 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-07 00:53:54,256 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-07 00:53:54,256 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.04 12:53:54" (1/1) ... [2022-04-07 00:53:54,258 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6687f707 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:53:54, skipping insertion in model container [2022-04-07 00:53:54,258 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.04 12:53:54" (1/1) ... [2022-04-07 00:53:54,281 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-07 00:53:54,484 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-07 00:53:55,497 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-1.c[90162,90175] [2022-04-07 00:53:56,639 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-07 00:53:56,648 INFO L203 MainTranslator]: Completed pre-run [2022-04-07 00:53:56,740 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-1.c[90162,90175] [2022-04-07 00:53:57,141 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-07 00:53:57,181 INFO L208 MainTranslator]: Completed translation [2022-04-07 00:53:57,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:53:57 WrapperNode [2022-04-07 00:53:57,183 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-07 00:53:57,184 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-07 00:53:57,184 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-07 00:53:57,184 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-07 00:53:57,210 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:53:57" (1/1) ... [2022-04-07 00:53:57,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:53:57" (1/1) ... [2022-04-07 00:53:57,381 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:53:57" (1/1) ... [2022-04-07 00:53:57,382 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:53:57" (1/1) ... [2022-04-07 00:53:57,580 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:53:57" (1/1) ... [2022-04-07 00:53:57,606 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:53:57" (1/1) ... [2022-04-07 00:53:57,632 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:53:57" (1/1) ... [2022-04-07 00:53:57,710 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-07 00:53:57,712 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-07 00:53:57,712 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-07 00:53:57,712 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-07 00:53:57,713 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:53:57" (1/1) ... [2022-04-07 00:53:57,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-07 00:53:57,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 00:53:57,760 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) [2022-04-07 00:53:57,795 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 [2022-04-07 00:53:57,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-07 00:53:57,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-07 00:53:57,838 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-07 00:53:57,838 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlWriteRegistryValue [2022-04-07 00:53:57,838 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedIncrement [2022-04-07 00:53:57,839 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedDecrement [2022-04-07 00:53:57,839 INFO L138 BoogieDeclarations]: Found implementation of procedure MmLockPagableDataSection [2022-04-07 00:53:57,839 INFO L138 BoogieDeclarations]: Found implementation of procedure IoOpenDeviceRegistryKey [2022-04-07 00:53:57,839 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-04-07 00:53:57,839 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-04-07 00:53:57,839 INFO L138 BoogieDeclarations]: Found implementation of procedure SendSrbSynchronous [2022-04-07 00:53:57,839 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioAddDevice [2022-04-07 00:53:57,840 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSignalCompletion [2022-04-07 00:53:57,840 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioStartDevice [2022-04-07 00:53:57,840 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPnp [2022-04-07 00:53:57,843 INFO L138 BoogieDeclarations]: Found implementation of procedure DriverEntry [2022-04-07 00:53:57,843 INFO L138 BoogieDeclarations]: Found implementation of procedure NecSupportNeeded [2022-04-07 00:53:57,843 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioReadWrite [2022-04-07 00:53:57,843 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioDeviceControl [2022-04-07 00:53:57,843 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSendToNextDriver [2022-04-07 00:53:57,843 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioIsPlayActive [2022-04-07 00:53:57,843 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioNECDeviceControl [2022-04-07 00:53:57,844 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPioneerDeviceControl [2022-04-07 00:53:57,844 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioDenonDeviceControl [2022-04-07 00:53:57,844 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioHitachiSendPauseCommand [2022-04-07 00:53:57,844 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioHitachiDeviceControl [2022-04-07 00:53:57,844 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio535DeviceControl [2022-04-07 00:53:57,844 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio435DeviceControl [2022-04-07 00:53:57,844 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioAtapiDeviceControl [2022-04-07 00:53:57,844 INFO L138 BoogieDeclarations]: Found implementation of procedure HpCdrProcessLastSession [2022-04-07 00:53:57,844 INFO L138 BoogieDeclarations]: Found implementation of procedure HPCdrCompletion [2022-04-07 00:53:57,844 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioHPCdrDeviceControl [2022-04-07 00:53:57,844 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioForwardIrpSynchronous [2022-04-07 00:53:57,845 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioUnload [2022-04-07 00:53:57,845 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPower [2022-04-07 00:53:57,845 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-04-07 00:53:57,845 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-07 00:53:57,845 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_malloc [2022-04-07 00:53:57,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAcquireFastMutex [2022-04-07 00:53:57,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ExReleaseFastMutex [2022-04-07 00:53:57,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2022-04-07 00:53:57,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ExFreePool [2022-04-07 00:53:57,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertHeadList [2022-04-07 00:53:57,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertTailList [2022-04-07 00:53:57,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedRemoveHeadList [2022-04-07 00:53:57,846 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAllocateMdl [2022-04-07 00:53:57,846 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAttachDeviceToDeviceStack [2022-04-07 00:53:57,846 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildAsynchronousFsdRequest [2022-04-07 00:53:57,846 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2022-04-07 00:53:57,846 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateDevice [2022-04-07 00:53:57,846 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateSymbolicLink [2022-04-07 00:53:57,846 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteDevice [2022-04-07 00:53:57,846 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2022-04-07 00:53:57,846 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDetachDevice [2022-04-07 00:53:57,846 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeIrp [2022-04-07 00:53:57,847 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeMdl [2022-04-07 00:53:57,847 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2022-04-07 00:53:57,847 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2022-04-07 00:53:57,847 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2022-04-07 00:53:57,847 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReleaseCancelSpinLock [2022-04-07 00:53:57,847 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-04-07 00:53:57,847 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetHardErrorOrVerifyDevice [2022-04-07 00:53:57,847 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-04-07 00:53:57,847 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-04-07 00:53:57,847 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-04-07 00:53:57,847 INFO L138 BoogieDeclarations]: Found implementation of procedure KeAcquireSpinLockRaiseToDpc [2022-04-07 00:53:57,848 INFO L138 BoogieDeclarations]: Found implementation of procedure KeDelayExecutionThread [2022-04-07 00:53:57,866 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeEvent [2022-04-07 00:53:57,866 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSemaphore [2022-04-07 00:53:57,867 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSpinLock [2022-04-07 00:53:57,867 INFO L138 BoogieDeclarations]: Found implementation of procedure KeReleaseSemaphore [2022-04-07 00:53:57,867 INFO L138 BoogieDeclarations]: Found implementation of procedure KfReleaseSpinLock [2022-04-07 00:53:57,867 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-04-07 00:53:57,867 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-04-07 00:53:57,867 INFO L138 BoogieDeclarations]: Found implementation of procedure MmAllocateContiguousMemory [2022-04-07 00:53:57,867 INFO L138 BoogieDeclarations]: Found implementation of procedure MmFreeContiguousMemory [2022-04-07 00:53:57,867 INFO L138 BoogieDeclarations]: Found implementation of procedure MmMapLockedPagesSpecifyCache [2022-04-07 00:53:57,867 INFO L138 BoogieDeclarations]: Found implementation of procedure MmPageEntireDriver [2022-04-07 00:53:57,867 INFO L138 BoogieDeclarations]: Found implementation of procedure MmResetDriverPaging [2022-04-07 00:53:57,867 INFO L138 BoogieDeclarations]: Found implementation of procedure MmUnlockPages [2022-04-07 00:53:57,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2022-04-07 00:53:57,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ObfDereferenceObject [2022-04-07 00:53:57,868 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-04-07 00:53:57,868 INFO L138 BoogieDeclarations]: Found implementation of procedure PoStartNextPowerIrp [2022-04-07 00:53:57,868 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2022-04-07 00:53:57,868 INFO L138 BoogieDeclarations]: Found implementation of procedure PsTerminateSystemThread [2022-04-07 00:53:57,868 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlAnsiStringToUnicodeString [2022-04-07 00:53:57,868 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCompareMemory [2022-04-07 00:53:57,868 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCopyUnicodeString [2022-04-07 00:53:57,868 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlDeleteRegistryValue [2022-04-07 00:53:57,868 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlFreeUnicodeString [2022-04-07 00:53:57,868 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitString [2022-04-07 00:53:57,868 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitUnicodeString [2022-04-07 00:53:57,869 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlQueryRegistryValues [2022-04-07 00:53:57,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-04-07 00:53:57,869 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-04-07 00:53:57,869 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-04-07 00:53:57,869 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-07 00:53:57,869 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-07 00:53:57,869 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-07 00:53:57,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-07 00:53:57,869 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-04-07 00:53:57,869 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-07 00:53:57,870 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-04-07 00:53:57,870 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2022-04-07 00:53:57,870 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-04-07 00:53:57,870 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2022-04-07 00:53:57,870 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-04-07 00:53:57,870 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2022-04-07 00:53:57,870 INFO L130 BoogieDeclarations]: Found specification of procedure RtlQueryRegistryValues [2022-04-07 00:53:57,870 INFO L130 BoogieDeclarations]: Found specification of procedure RtlWriteRegistryValue [2022-04-07 00:53:57,870 INFO L130 BoogieDeclarations]: Found specification of procedure RtlDeleteRegistryValue [2022-04-07 00:53:57,870 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitString [2022-04-07 00:53:57,870 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitUnicodeString [2022-04-07 00:53:57,870 INFO L130 BoogieDeclarations]: Found specification of procedure RtlAnsiStringToUnicodeString [2022-04-07 00:53:57,871 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCopyUnicodeString [2022-04-07 00:53:57,871 INFO L130 BoogieDeclarations]: Found specification of procedure RtlFreeUnicodeString [2022-04-07 00:53:57,871 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCompareMemory [2022-04-07 00:53:57,871 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedIncrement [2022-04-07 00:53:57,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-07 00:53:57,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-07 00:53:57,871 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedDecrement [2022-04-07 00:53:57,871 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeEvent [2022-04-07 00:53:57,871 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-04-07 00:53:57,871 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSemaphore [2022-04-07 00:53:57,871 INFO L130 BoogieDeclarations]: Found specification of procedure KeReleaseSemaphore [2022-04-07 00:53:57,871 INFO L130 BoogieDeclarations]: Found specification of procedure KeDelayExecutionThread [2022-04-07 00:53:57,872 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-04-07 00:53:57,872 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSpinLock [2022-04-07 00:53:57,872 INFO L130 BoogieDeclarations]: Found specification of procedure KfReleaseSpinLock [2022-04-07 00:53:57,872 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2022-04-07 00:53:57,872 INFO L130 BoogieDeclarations]: Found specification of procedure ExFreePool [2022-04-07 00:53:57,872 INFO L130 BoogieDeclarations]: Found specification of procedure ExAcquireFastMutex [2022-04-07 00:53:57,872 INFO L130 BoogieDeclarations]: Found specification of procedure ExReleaseFastMutex [2022-04-07 00:53:57,872 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertHeadList [2022-04-07 00:53:57,872 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertTailList [2022-04-07 00:53:57,872 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedRemoveHeadList [2022-04-07 00:53:57,872 INFO L130 BoogieDeclarations]: Found specification of procedure MmUnlockPages [2022-04-07 00:53:57,872 INFO L130 BoogieDeclarations]: Found specification of procedure MmMapLockedPagesSpecifyCache [2022-04-07 00:53:57,873 INFO L130 BoogieDeclarations]: Found specification of procedure MmAllocateContiguousMemory [2022-04-07 00:53:57,873 INFO L130 BoogieDeclarations]: Found specification of procedure MmFreeContiguousMemory [2022-04-07 00:53:57,873 INFO L130 BoogieDeclarations]: Found specification of procedure MmLockPagableDataSection [2022-04-07 00:53:57,873 INFO L130 BoogieDeclarations]: Found specification of procedure MmResetDriverPaging [2022-04-07 00:53:57,873 INFO L130 BoogieDeclarations]: Found specification of procedure MmPageEntireDriver [2022-04-07 00:53:57,873 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2022-04-07 00:53:57,873 INFO L130 BoogieDeclarations]: Found specification of procedure PsTerminateSystemThread [2022-04-07 00:53:57,873 INFO L130 BoogieDeclarations]: Found specification of procedure IoAllocateMdl [2022-04-07 00:53:57,873 INFO L130 BoogieDeclarations]: Found specification of procedure IoAttachDeviceToDeviceStack [2022-04-07 00:53:57,873 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildAsynchronousFsdRequest [2022-04-07 00:53:57,873 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2022-04-07 00:53:57,873 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-04-07 00:53:57,873 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-04-07 00:53:57,874 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateDevice [2022-04-07 00:53:57,874 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateSymbolicLink [2022-04-07 00:53:57,874 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteDevice [2022-04-07 00:53:57,874 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2022-04-07 00:53:57,874 INFO L130 BoogieDeclarations]: Found specification of procedure IoDetachDevice [2022-04-07 00:53:57,874 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeIrp [2022-04-07 00:53:57,874 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeMdl [2022-04-07 00:53:57,874 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2022-04-07 00:53:57,874 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2022-04-07 00:53:57,874 INFO L130 BoogieDeclarations]: Found specification of procedure IoReleaseCancelSpinLock [2022-04-07 00:53:57,874 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetHardErrorOrVerifyDevice [2022-04-07 00:53:57,874 INFO L130 BoogieDeclarations]: Found specification of procedure IoOpenDeviceRegistryKey [2022-04-07 00:53:57,875 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2022-04-07 00:53:57,875 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-04-07 00:53:57,875 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-04-07 00:53:57,875 INFO L130 BoogieDeclarations]: Found specification of procedure PoStartNextPowerIrp [2022-04-07 00:53:57,875 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2022-04-07 00:53:57,875 INFO L130 BoogieDeclarations]: Found specification of procedure ObfDereferenceObject [2022-04-07 00:53:57,875 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-04-07 00:53:57,875 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-04-07 00:53:57,875 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-04-07 00:53:57,875 INFO L130 BoogieDeclarations]: Found specification of procedure DriverEntry [2022-04-07 00:53:57,875 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioReadWrite [2022-04-07 00:53:57,875 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioDeviceControl [2022-04-07 00:53:57,876 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSendToNextDriver [2022-04-07 00:53:57,876 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioIsPlayActive [2022-04-07 00:53:57,876 INFO L130 BoogieDeclarations]: Found specification of procedure NecSupportNeeded [2022-04-07 00:53:57,876 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioNECDeviceControl [2022-04-07 00:53:57,876 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPioneerDeviceControl [2022-04-07 00:53:57,876 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioDenonDeviceControl [2022-04-07 00:53:57,876 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioHitachiSendPauseCommand [2022-04-07 00:53:57,876 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioHitachiDeviceControl [2022-04-07 00:53:57,876 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio535DeviceControl [2022-04-07 00:53:57,876 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio435DeviceControl [2022-04-07 00:53:57,876 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioAtapiDeviceControl [2022-04-07 00:53:57,876 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioHPCdrDeviceControl [2022-04-07 00:53:57,877 INFO L130 BoogieDeclarations]: Found specification of procedure HpCdrProcessLastSession [2022-04-07 00:53:57,877 INFO L130 BoogieDeclarations]: Found specification of procedure HPCdrCompletion [2022-04-07 00:53:57,877 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPower [2022-04-07 00:53:57,877 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioForwardIrpSynchronous [2022-04-07 00:53:57,877 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioUnload [2022-04-07 00:53:57,877 INFO L130 BoogieDeclarations]: Found specification of procedure SendSrbSynchronous [2022-04-07 00:53:57,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-07 00:53:57,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-07 00:53:57,877 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioAddDevice [2022-04-07 00:53:57,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-04-07 00:53:57,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-04-07 00:53:57,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-04-07 00:53:57,877 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSignalCompletion [2022-04-07 00:53:57,878 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioStartDevice [2022-04-07 00:53:57,878 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPnp [2022-04-07 00:53:57,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-04-07 00:53:57,878 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-04-07 00:53:57,878 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-07 00:53:57,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-04-07 00:53:57,878 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_malloc [2022-04-07 00:53:57,878 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-04-07 00:53:57,878 INFO L130 BoogieDeclarations]: Found specification of procedure KeAcquireSpinLockRaiseToDpc [2022-04-07 00:53:57,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-07 00:53:57,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-07 00:53:57,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-07 00:53:57,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-04-07 00:53:57,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-04-07 00:53:57,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-04-07 00:53:57,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-04-07 00:53:58,916 INFO L234 CfgBuilder]: Building ICFG [2022-04-07 00:53:58,923 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-07 00:53:58,973 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:53:59,016 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 00:53:59,016 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 00:53:59,016 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:53:59,039 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 00:53:59,039 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 00:53:59,046 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:53:59,071 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 00:53:59,072 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 00:53:59,072 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:53:59,115 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 00:53:59,115 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 00:53:59,120 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:54:05,642 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume !false; [2022-04-07 00:54:05,642 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume false; [2022-04-07 00:54:05,700 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:54:05,707 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 00:54:05,708 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 00:54:05,708 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:54:05,720 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 00:54:05,720 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 00:54:05,721 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:54:05,733 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 00:54:05,733 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 00:54:05,734 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:54:05,758 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 00:54:05,758 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 00:54:05,765 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:54:13,690 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2022-04-07 00:54:13,690 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2022-04-07 00:54:13,733 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:54:13,960 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##39: assume false; [2022-04-07 00:54:13,960 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##40: assume !false; [2022-04-07 00:54:13,966 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:54:13,977 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 00:54:13,978 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 00:54:13,978 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:54:14,014 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2022-04-07 00:54:14,015 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2022-04-07 00:54:14,015 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:54:14,019 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 00:54:14,020 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 00:54:14,020 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:54:14,026 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 00:54:14,027 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 00:54:14,052 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:54:14,057 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 00:54:14,057 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 00:54:14,058 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:54:14,063 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 00:54:14,063 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 00:54:14,373 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:54:18,696 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2022-04-07 00:54:18,697 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2022-04-07 00:54:18,705 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:54:25,023 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume false; [2022-04-07 00:54:25,023 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##22: assume !false; [2022-04-07 00:54:25,034 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:54:25,071 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-04-07 00:54:25,072 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-04-07 00:54:25,106 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:54:25,110 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 00:54:25,110 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 00:54:25,171 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:54:25,278 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##32: assume false; [2022-04-07 00:54:25,278 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##33: assume !false; [2022-04-07 00:54:25,466 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:54:25,471 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 00:54:25,471 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 00:54:25,680 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:54:25,685 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 00:54:25,685 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 00:54:25,686 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:54:31,208 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume !false; [2022-04-07 00:54:31,208 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume false; [2022-04-07 00:54:31,213 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:54:31,266 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2022-04-07 00:54:31,267 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2022-04-07 00:54:31,275 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:54:31,285 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-04-07 00:54:31,285 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-04-07 00:54:31,312 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:54:31,316 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 00:54:31,316 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 00:54:33,161 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:54:33,210 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2022-04-07 00:54:33,211 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2022-04-07 00:54:33,211 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L3709: #res := 0; [2022-04-07 00:54:33,211 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:54:33,217 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 00:54:33,217 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 00:54:33,281 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:54:38,713 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2022-04-07 00:54:38,713 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2022-04-07 00:54:38,857 INFO L275 CfgBuilder]: Performing block encoding [2022-04-07 00:54:38,885 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-07 00:54:38,885 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2022-04-07 00:54:38,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.04 12:54:38 BoogieIcfgContainer [2022-04-07 00:54:38,895 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-07 00:54:38,899 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-07 00:54:38,899 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-07 00:54:38,902 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-07 00:54:38,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.04 12:53:54" (1/3) ... [2022-04-07 00:54:38,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ae5904e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.04 12:54:38, skipping insertion in model container [2022-04-07 00:54:38,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:53:57" (2/3) ... [2022-04-07 00:54:38,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ae5904e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.04 12:54:38, skipping insertion in model container [2022-04-07 00:54:38,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.04 12:54:38" (3/3) ... [2022-04-07 00:54:38,906 INFO L111 eAbstractionObserver]: Analyzing ICFG cdaudio.i.cil-1.c [2022-04-07 00:54:38,910 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-07 00:54:38,911 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-07 00:54:38,968 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-07 00:54:38,976 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, 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 [2022-04-07 00:54:38,977 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-07 00:54:39,028 INFO L276 IsEmpty]: Start isEmpty. Operand has 1261 states, 960 states have (on average 1.5177083333333334) internal successors, (1457), 990 states have internal predecessors, (1457), 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) [2022-04-07 00:54:39,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-04-07 00:54:39,037 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:54:39,038 INFO L499 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] [2022-04-07 00:54:39,038 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:54:39,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:54:39,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1165007651, now seen corresponding path program 1 times [2022-04-07 00:54:39,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:54:39,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1333561877] [2022-04-07 00:54:39,059 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:54:39,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1165007651, now seen corresponding path program 2 times [2022-04-07 00:54:39,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:54:39,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890047460] [2022-04-07 00:54:39,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:54:39,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:54:39,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:54:39,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:54:39,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:54:39,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:54:39,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:54:39,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:54:39,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:54:39,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890047460] [2022-04-07 00:54:39,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890047460] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:54:39,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:54:39,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-07 00:54:39,871 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:54:39,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1333561877] [2022-04-07 00:54:39,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1333561877] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:54:39,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:54:39,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-07 00:54:39,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448853734] [2022-04-07 00:54:39,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:54:39,877 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-07 00:54:39,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:54:39,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-07 00:54:39,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-04-07 00:54:39,909 INFO L87 Difference]: Start difference. First operand has 1261 states, 960 states have (on average 1.5177083333333334) internal successors, (1457), 990 states have internal predecessors, (1457), 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 4.0) internal successors, (20), 3 states have internal predecessors, (20), 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) [2022-04-07 00:54:47,460 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:54:50,803 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:54:53,072 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:54:56,619 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:54:58,791 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:55:01,071 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:55:03,071 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:55:05,225 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:55:07,648 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:55:11,092 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:55:14,304 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:55:16,333 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 [] [2022-04-07 00:55:16,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:55:16,603 INFO L93 Difference]: Finished difference Result 1537 states and 2438 transitions. [2022-04-07 00:55:16,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-07 00:55:16,606 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 3 states have internal predecessors, (20), 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 26 [2022-04-07 00:55:16,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:55:16,625 INFO L225 Difference]: With dead ends: 1537 [2022-04-07 00:55:16,625 INFO L226 Difference]: Without dead ends: 842 [2022-04-07 00:55:16,634 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-04-07 00:55:16,637 INFO L913 BasicCegarLoop]: 930 mSDtfsCounter, 484 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 1966 mSolverCounterSat, 187 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 1302 SdHoareTripleChecker+Invalid, 2163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 1966 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.1s IncrementalHoareTripleChecker+Time [2022-04-07 00:55:16,641 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [508 Valid, 1302 Invalid, 2163 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [187 Valid, 1966 Invalid, 10 Unknown, 0 Unchecked, 36.1s Time] [2022-04-07 00:55:16,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2022-04-07 00:55:16,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 679. [2022-04-07 00:55:16,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 510 states have (on average 1.4588235294117646) internal successors, (744), 527 states have internal predecessors, (744), 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) [2022-04-07 00:55:16,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 991 transitions. [2022-04-07 00:55:16,801 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 991 transitions. Word has length 26 [2022-04-07 00:55:16,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:55:16,805 INFO L478 AbstractCegarLoop]: Abstraction has 679 states and 991 transitions. [2022-04-07 00:55:16,809 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 3 states have internal predecessors, (20), 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) [2022-04-07 00:55:16,810 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 991 transitions. [2022-04-07 00:55:16,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-04-07 00:55:16,811 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:55:16,812 INFO L499 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] [2022-04-07 00:55:16,812 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-07 00:55:16,812 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:55:16,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:55:16,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1118603387, now seen corresponding path program 1 times [2022-04-07 00:55:16,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:55:16,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [497067903] [2022-04-07 00:55:16,821 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:55:16,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1118603387, now seen corresponding path program 2 times [2022-04-07 00:55:16,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:55:16,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037028297] [2022-04-07 00:55:16,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:55:16,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:55:16,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:55:17,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:55:17,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:55:17,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:55:17,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:55:17,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-07 00:55:17,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:55:17,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:55:17,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:55:17,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037028297] [2022-04-07 00:55:17,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037028297] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:55:17,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:55:17,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-07 00:55:17,132 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:55:17,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [497067903] [2022-04-07 00:55:17,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [497067903] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:55:17,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:55:17,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-07 00:55:17,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570133612] [2022-04-07 00:55:17,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:55:17,138 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-07 00:55:17,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:55:17,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-07 00:55:17,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-07 00:55:17,139 INFO L87 Difference]: Start difference. First operand 679 states and 991 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 3 states have internal predecessors, (22), 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) [2022-04-07 00:55:23,853 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 [] [2022-04-07 00:55:25,849 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:55:29,118 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:55:31,438 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:55:34,094 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:55:36,240 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:55:38,868 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:55:41,191 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:55:42,524 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:55:42,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:55:42,715 INFO L93 Difference]: Finished difference Result 1457 states and 2151 transitions. [2022-04-07 00:55:42,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-07 00:55:42,716 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), 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 31 [2022-04-07 00:55:42,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:55:42,732 INFO L225 Difference]: With dead ends: 1457 [2022-04-07 00:55:42,732 INFO L226 Difference]: Without dead ends: 1180 [2022-04-07 00:55:42,734 INFO L912 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 [2022-04-07 00:55:42,735 INFO L913 BasicCegarLoop]: 1193 mSDtfsCounter, 1965 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 1760 mSolverCounterSat, 573 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2003 SdHoareTripleChecker+Valid, 1911 SdHoareTripleChecker+Invalid, 2339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 573 IncrementalHoareTripleChecker+Valid, 1760 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.2s IncrementalHoareTripleChecker+Time [2022-04-07 00:55:42,736 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2003 Valid, 1911 Invalid, 2339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [573 Valid, 1760 Invalid, 6 Unknown, 0 Unchecked, 25.2s Time] [2022-04-07 00:55:42,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2022-04-07 00:55:42,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 991. [2022-04-07 00:55:42,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 756 states have (on average 1.42989417989418) internal successors, (1081), 760 states have internal predecessors, (1081), 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) [2022-04-07 00:55:42,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1448 transitions. [2022-04-07 00:55:42,857 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1448 transitions. Word has length 31 [2022-04-07 00:55:42,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:55:42,858 INFO L478 AbstractCegarLoop]: Abstraction has 991 states and 1448 transitions. [2022-04-07 00:55:42,858 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 3 states have internal predecessors, (22), 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) [2022-04-07 00:55:42,858 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1448 transitions. [2022-04-07 00:55:42,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-04-07 00:55:42,860 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:55:42,860 INFO L499 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] [2022-04-07 00:55:42,860 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-07 00:55:42,860 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:55:42,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:55:42,861 INFO L85 PathProgramCache]: Analyzing trace with hash 425780201, now seen corresponding path program 1 times [2022-04-07 00:55:42,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:55:42,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [95975804] [2022-04-07 00:55:42,862 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:55:42,862 INFO L85 PathProgramCache]: Analyzing trace with hash 425780201, now seen corresponding path program 2 times [2022-04-07 00:55:42,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:55:42,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276840474] [2022-04-07 00:55:42,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:55:42,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:55:42,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:55:43,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:55:43,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:55:43,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:55:43,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:55:43,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-07 00:55:43,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:55:43,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:55:43,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:55:43,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276840474] [2022-04-07 00:55:43,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276840474] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:55:43,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:55:43,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-07 00:55:43,221 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:55:43,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [95975804] [2022-04-07 00:55:43,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [95975804] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:55:43,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:55:43,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-07 00:55:43,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497816344] [2022-04-07 00:55:43,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:55:43,223 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-07 00:55:43,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:55:43,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-07 00:55:43,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-07 00:55:43,224 INFO L87 Difference]: Start difference. First operand 991 states and 1448 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 3 states have internal predecessors, (28), 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) [2022-04-07 00:55:45,354 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:55:51,873 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:55:54,821 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:55:58,973 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:56:01,018 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:56:02,666 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:56:04,884 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:56:07,359 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:56:09,237 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:56:10,393 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:56:11,800 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:56:14,035 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:56:16,219 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:56:18,251 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:56:20,806 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:56:22,022 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:56:24,040 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 [] [2022-04-07 00:56:24,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:56:24,474 INFO L93 Difference]: Finished difference Result 2293 states and 3447 transitions. [2022-04-07 00:56:24,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-07 00:56:24,474 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 3 states have internal predecessors, (28), 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 38 [2022-04-07 00:56:24,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:56:24,485 INFO L225 Difference]: With dead ends: 2293 [2022-04-07 00:56:24,485 INFO L226 Difference]: Without dead ends: 1837 [2022-04-07 00:56:24,487 INFO L912 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 [2022-04-07 00:56:24,488 INFO L913 BasicCegarLoop]: 1375 mSDtfsCounter, 1089 mSDsluCounter, 798 mSDsCounter, 0 mSdLazyCounter, 3241 mSolverCounterSat, 292 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1141 SdHoareTripleChecker+Valid, 2173 SdHoareTripleChecker+Invalid, 3544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 3241 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.8s IncrementalHoareTripleChecker+Time [2022-04-07 00:56:24,488 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1141 Valid, 2173 Invalid, 3544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 3241 Invalid, 11 Unknown, 0 Unchecked, 40.8s Time] [2022-04-07 00:56:24,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1837 states. [2022-04-07 00:56:24,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1837 to 1172. [2022-04-07 00:56:24,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1172 states, 892 states have (on average 1.4204035874439462) internal successors, (1267), 895 states have internal predecessors, (1267), 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) [2022-04-07 00:56:24,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1733 transitions. [2022-04-07 00:56:24,710 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1733 transitions. Word has length 38 [2022-04-07 00:56:24,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:56:24,710 INFO L478 AbstractCegarLoop]: Abstraction has 1172 states and 1733 transitions. [2022-04-07 00:56:24,710 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 3 states have internal predecessors, (28), 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) [2022-04-07 00:56:24,711 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1733 transitions. [2022-04-07 00:56:24,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-04-07 00:56:24,712 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:56:24,713 INFO L499 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] [2022-04-07 00:56:24,713 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-07 00:56:24,713 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:56:24,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:56:24,714 INFO L85 PathProgramCache]: Analyzing trace with hash 76033968, now seen corresponding path program 1 times [2022-04-07 00:56:24,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:56:24,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1331250931] [2022-04-07 00:56:24,714 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:56:24,714 INFO L85 PathProgramCache]: Analyzing trace with hash 76033968, now seen corresponding path program 2 times [2022-04-07 00:56:24,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:56:24,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756615129] [2022-04-07 00:56:24,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:56:24,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:56:24,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:56:24,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:56:24,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:56:25,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:56:25,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:56:25,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-07 00:56:25,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:56:25,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:56:25,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:56:25,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756615129] [2022-04-07 00:56:25,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756615129] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:56:25,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:56:25,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-07 00:56:25,119 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:56:25,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1331250931] [2022-04-07 00:56:25,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1331250931] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:56:25,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:56:25,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-07 00:56:25,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398403563] [2022-04-07 00:56:25,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:56:25,119 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-07 00:56:25,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:56:25,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-07 00:56:25,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-04-07 00:56:25,121 INFO L87 Difference]: Start difference. First operand 1172 states and 1733 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 5 states have internal predecessors, (29), 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) [2022-04-07 00:56:32,716 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 [] [2022-04-07 00:56:34,746 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:56:37,113 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:56:39,306 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:56:42,430 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:56:44,086 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:56:46,348 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:56:48,380 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:56:50,425 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:56:51,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:56:51,157 INFO L93 Difference]: Finished difference Result 2221 states and 3345 transitions. [2022-04-07 00:56:51,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-07 00:56:51,158 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 5 states have internal predecessors, (29), 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 39 [2022-04-07 00:56:51,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:56:51,166 INFO L225 Difference]: With dead ends: 2221 [2022-04-07 00:56:51,166 INFO L226 Difference]: Without dead ends: 1514 [2022-04-07 00:56:51,169 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2022-04-07 00:56:51,170 INFO L913 BasicCegarLoop]: 1366 mSDtfsCounter, 3770 mSDsluCounter, 1260 mSDsCounter, 0 mSdLazyCounter, 2680 mSolverCounterSat, 1387 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3801 SdHoareTripleChecker+Valid, 2626 SdHoareTripleChecker+Invalid, 4074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1387 IncrementalHoareTripleChecker+Valid, 2680 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.3s IncrementalHoareTripleChecker+Time [2022-04-07 00:56:51,170 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [3801 Valid, 2626 Invalid, 4074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1387 Valid, 2680 Invalid, 7 Unknown, 0 Unchecked, 25.3s Time] [2022-04-07 00:56:51,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1514 states. [2022-04-07 00:56:51,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1514 to 1166. [2022-04-07 00:56:51,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1166 states, 887 states have (on average 1.4182638105975198) internal successors, (1258), 890 states have internal predecessors, (1258), 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) [2022-04-07 00:56:51,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 1721 transitions. [2022-04-07 00:56:51,308 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 1721 transitions. Word has length 39 [2022-04-07 00:56:51,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:56:51,308 INFO L478 AbstractCegarLoop]: Abstraction has 1166 states and 1721 transitions. [2022-04-07 00:56:51,308 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 5 states have internal predecessors, (29), 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) [2022-04-07 00:56:51,308 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 1721 transitions. [2022-04-07 00:56:51,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-04-07 00:56:51,310 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:56:51,310 INFO L499 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] [2022-04-07 00:56:51,310 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-07 00:56:51,310 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:56:51,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:56:51,311 INFO L85 PathProgramCache]: Analyzing trace with hash -610227898, now seen corresponding path program 1 times [2022-04-07 00:56:51,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:56:51,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1874171458] [2022-04-07 00:56:51,312 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:56:51,312 INFO L85 PathProgramCache]: Analyzing trace with hash -610227898, now seen corresponding path program 2 times [2022-04-07 00:56:51,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:56:51,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967806574] [2022-04-07 00:56:51,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:56:51,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:56:51,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:56:51,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:56:51,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:56:51,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:56:51,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:56:51,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-07 00:56:51,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:56:51,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:56:51,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:56:51,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967806574] [2022-04-07 00:56:51,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967806574] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:56:51,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:56:51,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-07 00:56:51,630 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:56:51,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1874171458] [2022-04-07 00:56:51,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1874171458] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:56:51,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:56:51,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-07 00:56:51,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68543790] [2022-04-07 00:56:51,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:56:51,631 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-07 00:56:51,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:56:51,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-07 00:56:51,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-07 00:56:51,632 INFO L87 Difference]: Start difference. First operand 1166 states and 1721 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 3 states have internal predecessors, (29), 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) [2022-04-07 00:56:57,223 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:56:59,428 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:57:01,570 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:57:04,638 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:57:07,156 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:57:09,523 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:57:12,246 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:57:15,427 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:57:17,493 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:57:19,406 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:57:20,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:57:20,462 INFO L93 Difference]: Finished difference Result 2067 states and 3010 transitions. [2022-04-07 00:57:20,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-07 00:57:20,463 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 3 states have internal predecessors, (29), 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 40 [2022-04-07 00:57:20,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:57:20,473 INFO L225 Difference]: With dead ends: 2067 [2022-04-07 00:57:20,473 INFO L226 Difference]: Without dead ends: 1899 [2022-04-07 00:57:20,475 INFO L912 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 [2022-04-07 00:57:20,475 INFO L913 BasicCegarLoop]: 1135 mSDtfsCounter, 1439 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 2306 mSolverCounterSat, 332 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1483 SdHoareTripleChecker+Valid, 1848 SdHoareTripleChecker+Invalid, 2644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 2306 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.4s IncrementalHoareTripleChecker+Time [2022-04-07 00:57:20,476 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1483 Valid, 1848 Invalid, 2644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 2306 Invalid, 6 Unknown, 0 Unchecked, 28.4s Time] [2022-04-07 00:57:20,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2022-04-07 00:57:20,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1631. [2022-04-07 00:57:20,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1631 states, 1259 states have (on average 1.4233518665607625) internal successors, (1792), 1260 states have internal predecessors, (1792), 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) [2022-04-07 00:57:20,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 2392 transitions. [2022-04-07 00:57:20,690 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 2392 transitions. Word has length 40 [2022-04-07 00:57:20,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:57:20,690 INFO L478 AbstractCegarLoop]: Abstraction has 1631 states and 2392 transitions. [2022-04-07 00:57:20,691 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 3 states have internal predecessors, (29), 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) [2022-04-07 00:57:20,691 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 2392 transitions. [2022-04-07 00:57:20,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-04-07 00:57:20,694 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:57:20,694 INFO L499 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] [2022-04-07 00:57:20,694 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-07 00:57:20,694 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:57:20,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:57:20,695 INFO L85 PathProgramCache]: Analyzing trace with hash -305283800, now seen corresponding path program 1 times [2022-04-07 00:57:20,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:57:20,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1276593160] [2022-04-07 00:57:20,695 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:57:20,695 INFO L85 PathProgramCache]: Analyzing trace with hash -305283800, now seen corresponding path program 2 times [2022-04-07 00:57:20,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:57:20,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20279911] [2022-04-07 00:57:20,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:57:20,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:57:20,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:57:20,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:57:20,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:57:20,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:57:20,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:57:20,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-07 00:57:20,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:57:20,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:57:20,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:57:20,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20279911] [2022-04-07 00:57:20,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20279911] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:57:20,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:57:20,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-07 00:57:20,938 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:57:20,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1276593160] [2022-04-07 00:57:20,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1276593160] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:57:20,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:57:20,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-07 00:57:20,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257673177] [2022-04-07 00:57:20,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:57:20,938 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-07 00:57:20,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:57:20,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-07 00:57:20,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-07 00:57:20,939 INFO L87 Difference]: Start difference. First operand 1631 states and 2392 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2022-04-07 00:57:26,485 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:57:29,235 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:57:31,927 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:57:33,956 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:57:35,994 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:57:38,064 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:57:40,462 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:57:41,534 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:57:44,528 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:57:46,738 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:57:49,515 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:57:51,556 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:57:53,727 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:57:56,111 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:57:57,611 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 [] [2022-04-07 00:57:57,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:57:57,824 INFO L93 Difference]: Finished difference Result 1768 states and 2618 transitions. [2022-04-07 00:57:57,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-07 00:57:57,825 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 3 states have internal predecessors, (30), 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 40 [2022-04-07 00:57:57,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:57:57,834 INFO L225 Difference]: With dead ends: 1768 [2022-04-07 00:57:57,834 INFO L226 Difference]: Without dead ends: 1764 [2022-04-07 00:57:57,835 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-04-07 00:57:57,836 INFO L913 BasicCegarLoop]: 904 mSDtfsCounter, 1392 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 1080 mSolverCounterSat, 550 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1416 SdHoareTripleChecker+Valid, 1458 SdHoareTripleChecker+Invalid, 1643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 1080 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.5s IncrementalHoareTripleChecker+Time [2022-04-07 00:57:57,836 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1416 Valid, 1458 Invalid, 1643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 1080 Invalid, 13 Unknown, 0 Unchecked, 36.5s Time] [2022-04-07 00:57:57,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1764 states. [2022-04-07 00:57:58,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1764 to 1630. [2022-04-07 00:57:58,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1630 states, 1259 states have (on average 1.4217633042096902) internal successors, (1790), 1259 states have internal predecessors, (1790), 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) [2022-04-07 00:57:58,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 2389 transitions. [2022-04-07 00:57:58,062 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 2389 transitions. Word has length 40 [2022-04-07 00:57:58,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:57:58,063 INFO L478 AbstractCegarLoop]: Abstraction has 1630 states and 2389 transitions. [2022-04-07 00:57:58,063 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2022-04-07 00:57:58,063 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 2389 transitions. [2022-04-07 00:57:58,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-04-07 00:57:58,067 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:57:58,067 INFO L499 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] [2022-04-07 00:57:58,067 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-07 00:57:58,067 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:57:58,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:57:58,068 INFO L85 PathProgramCache]: Analyzing trace with hash 2118625593, now seen corresponding path program 1 times [2022-04-07 00:57:58,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:57:58,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [245154672] [2022-04-07 00:57:58,068 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:57:58,069 INFO L85 PathProgramCache]: Analyzing trace with hash 2118625593, now seen corresponding path program 2 times [2022-04-07 00:57:58,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:57:58,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731377133] [2022-04-07 00:57:58,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:57:58,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:57:58,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:57:58,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:57:58,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:57:58,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:57:58,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:57:58,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-07 00:57:58,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:57:58,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-07 00:57:58,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:57:58,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:57:58,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:57:58,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731377133] [2022-04-07 00:57:58,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731377133] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:57:58,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:57:58,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-07 00:57:58,495 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:57:58,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [245154672] [2022-04-07 00:57:58,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [245154672] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:57:58,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:57:58,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-07 00:57:58,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852872528] [2022-04-07 00:57:58,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:57:58,496 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-07 00:57:58,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:57:58,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-07 00:57:58,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-04-07 00:57:58,497 INFO L87 Difference]: Start difference. First operand 1630 states and 2389 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, (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) [2022-04-07 00:58:03,035 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:58:07,462 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:58:10,654 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:58:12,672 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:58:16,007 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:58:18,892 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:58:23,497 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:58:25,135 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:58:26,514 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:58:30,205 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:58:31,963 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:58:33,981 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:58:35,417 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:58:37,683 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:58:40,418 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:58:42,445 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:58:45,044 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:58:47,281 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:58:48,590 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:58:48,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:58:48,814 INFO L93 Difference]: Finished difference Result 2734 states and 4044 transitions. [2022-04-07 00:58:48,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-04-07 00:58:48,815 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, (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 52 [2022-04-07 00:58:48,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:58:48,824 INFO L225 Difference]: With dead ends: 2734 [2022-04-07 00:58:48,824 INFO L226 Difference]: Without dead ends: 1596 [2022-04-07 00:58:48,828 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2022-04-07 00:58:48,829 INFO L913 BasicCegarLoop]: 966 mSDtfsCounter, 2464 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 2685 mSolverCounterSat, 1268 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2490 SdHoareTripleChecker+Valid, 1674 SdHoareTripleChecker+Invalid, 3965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1268 IncrementalHoareTripleChecker+Valid, 2685 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.5s IncrementalHoareTripleChecker+Time [2022-04-07 00:58:48,829 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2490 Valid, 1674 Invalid, 3965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1268 Valid, 2685 Invalid, 12 Unknown, 0 Unchecked, 49.5s Time] [2022-04-07 00:58:48,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1596 states. [2022-04-07 00:58:49,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1596 to 1203. [2022-04-07 00:58:49,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 930 states have (on average 1.4043010752688172) internal successors, (1306), 932 states have internal predecessors, (1306), 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) [2022-04-07 00:58:49,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1742 transitions. [2022-04-07 00:58:49,054 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1742 transitions. Word has length 52 [2022-04-07 00:58:49,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:58:49,055 INFO L478 AbstractCegarLoop]: Abstraction has 1203 states and 1742 transitions. [2022-04-07 00:58:49,055 INFO L479 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, (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) [2022-04-07 00:58:49,055 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1742 transitions. [2022-04-07 00:58:49,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-04-07 00:58:49,057 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:58:49,057 INFO L499 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] [2022-04-07 00:58:49,057 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-07 00:58:49,057 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:58:49,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:58:49,058 INFO L85 PathProgramCache]: Analyzing trace with hash 975245132, now seen corresponding path program 1 times [2022-04-07 00:58:49,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:58:49,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1856507347] [2022-04-07 00:58:49,058 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:58:49,058 INFO L85 PathProgramCache]: Analyzing trace with hash 975245132, now seen corresponding path program 2 times [2022-04-07 00:58:49,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:58:49,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718410370] [2022-04-07 00:58:49,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:58:49,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:58:49,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:58:49,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:58:49,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:58:49,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:58:49,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:58:49,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-07 00:58:49,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:58:49,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-04-07 00:58:49,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:58:49,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:58:49,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:58:49,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718410370] [2022-04-07 00:58:49,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718410370] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:58:49,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:58:49,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-07 00:58:49,349 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:58:49,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1856507347] [2022-04-07 00:58:49,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1856507347] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:58:49,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:58:49,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-07 00:58:49,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353394897] [2022-04-07 00:58:49,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:58:49,350 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-07 00:58:49,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:58:49,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-07 00:58:49,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-04-07 00:58:49,351 INFO L87 Difference]: Start difference. First operand 1203 states and 1742 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 3 states have internal predecessors, (39), 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) [2022-04-07 00:58:53,959 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:58:58,568 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:59:00,709 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:59:02,736 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:59:05,706 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:59:07,731 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:59:09,758 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:59:12,670 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:59:14,067 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:59:17,553 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:59:19,780 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:59:22,024 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:59:24,955 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:59:26,989 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:59:29,396 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:59:31,419 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:59:33,393 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:59:35,810 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:59:38,286 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:59:39,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:59:39,597 INFO L93 Difference]: Finished difference Result 2154 states and 3211 transitions. [2022-04-07 00:59:39,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-07 00:59:39,597 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 3 states have internal predecessors, (39), 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 53 [2022-04-07 00:59:39,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:59:39,603 INFO L225 Difference]: With dead ends: 2154 [2022-04-07 00:59:39,604 INFO L226 Difference]: Without dead ends: 1486 [2022-04-07 00:59:39,606 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-04-07 00:59:39,607 INFO L913 BasicCegarLoop]: 776 mSDtfsCounter, 1780 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 2330 mSolverCounterSat, 719 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1839 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 3064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 719 IncrementalHoareTripleChecker+Valid, 2330 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.6s IncrementalHoareTripleChecker+Time [2022-04-07 00:59:39,607 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1839 Valid, 1203 Invalid, 3064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [719 Valid, 2330 Invalid, 15 Unknown, 0 Unchecked, 49.6s Time] [2022-04-07 00:59:39,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1486 states. [2022-04-07 00:59:39,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1486 to 1200. [2022-04-07 00:59:39,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1200 states, 928 states have (on average 1.396551724137931) internal successors, (1296), 929 states have internal predecessors, (1296), 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) [2022-04-07 00:59:39,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1200 states to 1200 states and 1731 transitions. [2022-04-07 00:59:39,833 INFO L78 Accepts]: Start accepts. Automaton has 1200 states and 1731 transitions. Word has length 53 [2022-04-07 00:59:39,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:59:39,834 INFO L478 AbstractCegarLoop]: Abstraction has 1200 states and 1731 transitions. [2022-04-07 00:59:39,834 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 3 states have internal predecessors, (39), 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) [2022-04-07 00:59:39,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1200 states and 1731 transitions. [2022-04-07 00:59:39,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-04-07 00:59:39,838 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:59:39,838 INFO L499 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] [2022-04-07 00:59:39,838 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-04-07 00:59:39,838 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:59:39,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:59:39,839 INFO L85 PathProgramCache]: Analyzing trace with hash -990249866, now seen corresponding path program 1 times [2022-04-07 00:59:39,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:59:39,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1722268030] [2022-04-07 00:59:39,839 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:59:39,839 INFO L85 PathProgramCache]: Analyzing trace with hash -990249866, now seen corresponding path program 2 times [2022-04-07 00:59:39,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:59:39,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413585152] [2022-04-07 00:59:39,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:59:39,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:59:39,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:39,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:59:39,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:40,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:59:40,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:40,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-07 00:59:40,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:40,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-04-07 00:59:40,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:40,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 00:59:40,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:40,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:59:40,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:59:40,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413585152] [2022-04-07 00:59:40,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413585152] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:59:40,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:59:40,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-07 00:59:40,155 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:59:40,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1722268030] [2022-04-07 00:59:40,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1722268030] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:59:40,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:59:40,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-07 00:59:40,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512377596] [2022-04-07 00:59:40,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:59:40,155 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-07 00:59:40,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:59:40,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-07 00:59:40,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-04-07 00:59:40,156 INFO L87 Difference]: Start difference. First operand 1200 states and 1731 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 7 states have internal predecessors, (41), 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) [2022-04-07 00:59:51,311 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 [] [2022-04-07 00:59:55,579 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:59:58,507 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:00:00,533 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:00:01,852 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:00:03,880 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:00:06,912 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:00:10,210 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:00:14,695 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:00:17,165 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:00:19,240 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:00:23,566 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:00:25,593 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:00:27,625 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:00:29,084 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:00:31,380 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:00:33,622 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:00:35,813 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:00:38,577 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:00:42,452 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:00:44,485 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:00:44,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:00:44,838 INFO L93 Difference]: Finished difference Result 1832 states and 2719 transitions. [2022-04-07 01:00:44,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-04-07 01:00:44,839 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 7 states have internal predecessors, (41), 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 53 [2022-04-07 01:00:44,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:00:44,846 INFO L225 Difference]: With dead ends: 1832 [2022-04-07 01:00:44,847 INFO L226 Difference]: Without dead ends: 1772 [2022-04-07 01:00:44,849 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=174, Invalid=528, Unknown=0, NotChecked=0, Total=702 [2022-04-07 01:00:44,851 INFO L913 BasicCegarLoop]: 1064 mSDtfsCounter, 2900 mSDsluCounter, 1765 mSDsCounter, 0 mSdLazyCounter, 4444 mSolverCounterSat, 1363 mSolverCounterUnsat, 18 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 61.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2933 SdHoareTripleChecker+Valid, 2829 SdHoareTripleChecker+Invalid, 5825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1363 IncrementalHoareTripleChecker+Valid, 4444 IncrementalHoareTripleChecker+Invalid, 18 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 63.3s IncrementalHoareTripleChecker+Time [2022-04-07 01:00:44,851 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2933 Valid, 2829 Invalid, 5825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1363 Valid, 4444 Invalid, 18 Unknown, 0 Unchecked, 63.3s Time] [2022-04-07 01:00:44,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1772 states. [2022-04-07 01:00:45,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1772 to 1272. [2022-04-07 01:00:45,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1272 states, 982 states have (on average 1.390020366598778) internal successors, (1365), 982 states have internal predecessors, (1365), 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) [2022-04-07 01:00:45,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1272 states to 1272 states and 1819 transitions. [2022-04-07 01:00:45,104 INFO L78 Accepts]: Start accepts. Automaton has 1272 states and 1819 transitions. Word has length 53 [2022-04-07 01:00:45,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:00:45,105 INFO L478 AbstractCegarLoop]: Abstraction has 1272 states and 1819 transitions. [2022-04-07 01:00:45,105 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 7 states have internal predecessors, (41), 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) [2022-04-07 01:00:45,105 INFO L276 IsEmpty]: Start isEmpty. Operand 1272 states and 1819 transitions. [2022-04-07 01:00:45,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-04-07 01:00:45,107 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:00:45,108 INFO L499 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, 1] [2022-04-07 01:00:45,108 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-04-07 01:00:45,108 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:00:45,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:00:45,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1812095217, now seen corresponding path program 1 times [2022-04-07 01:00:45,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:00:45,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [113351944] [2022-04-07 01:00:45,110 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 01:00:45,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1812095217, now seen corresponding path program 2 times [2022-04-07 01:00:45,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:00:45,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886819877] [2022-04-07 01:00:45,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:00:45,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:00:45,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:45,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:00:45,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:45,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 01:00:45,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:45,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-07 01:00:45,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:45,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-04-07 01:00:45,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:45,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 01:00:45,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:45,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:00:45,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:00:45,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886819877] [2022-04-07 01:00:45,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886819877] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:00:45,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:00:45,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-07 01:00:45,484 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:00:45,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [113351944] [2022-04-07 01:00:45,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [113351944] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:00:45,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:00:45,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-07 01:00:45,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323187165] [2022-04-07 01:00:45,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:00:45,485 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-07 01:00:45,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:00:45,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-07 01:00:45,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-04-07 01:00:45,486 INFO L87 Difference]: Start difference. First operand 1272 states and 1819 transitions. Second operand has 11 states, 10 states have (on average 4.3) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-04-07 01:00:50,522 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:00:52,067 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:00:58,899 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:01:02,328 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:01:04,351 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:01:06,376 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:01:07,493 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:01:10,358 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:01:13,359 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:01:16,444 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:01:20,426 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:01:22,457 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:01:24,481 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:01:29,071 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:01:31,106 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:01:33,129 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:01:34,430 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:01:36,659 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:01:38,686 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:01:41,320 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:01:43,343 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:01:45,314 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:01:47,996 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 [] [2022-04-07 01:01:48,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:01:48,318 INFO L93 Difference]: Finished difference Result 1949 states and 2886 transitions. [2022-04-07 01:01:48,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-04-07 01:01:48,319 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.3) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 55 [2022-04-07 01:01:48,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:01:48,326 INFO L225 Difference]: With dead ends: 1949 [2022-04-07 01:01:48,327 INFO L226 Difference]: Without dead ends: 1937 [2022-04-07 01:01:48,328 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2022-04-07 01:01:48,328 INFO L913 BasicCegarLoop]: 1060 mSDtfsCounter, 3542 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 4078 mSolverCounterSat, 1611 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 59.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3590 SdHoareTripleChecker+Valid, 2805 SdHoareTripleChecker+Invalid, 5705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1611 IncrementalHoareTripleChecker+Valid, 4078 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 61.3s IncrementalHoareTripleChecker+Time [2022-04-07 01:01:48,328 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [3590 Valid, 2805 Invalid, 5705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1611 Valid, 4078 Invalid, 16 Unknown, 0 Unchecked, 61.3s Time] [2022-04-07 01:01:48,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1937 states. [2022-04-07 01:01:48,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1937 to 1326. [2022-04-07 01:01:48,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1326 states, 1025 states have (on average 1.377560975609756) internal successors, (1412), 1018 states have internal predecessors, (1412), 190 states have call successors, (190), 83 states have call predecessors, (190), 110 states have return successors, (282), 224 states have call predecessors, (282), 182 states have call successors, (282) [2022-04-07 01:01:48,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1326 states to 1326 states and 1884 transitions. [2022-04-07 01:01:48,597 INFO L78 Accepts]: Start accepts. Automaton has 1326 states and 1884 transitions. Word has length 55 [2022-04-07 01:01:48,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:01:48,597 INFO L478 AbstractCegarLoop]: Abstraction has 1326 states and 1884 transitions. [2022-04-07 01:01:48,597 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.3) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-04-07 01:01:48,597 INFO L276 IsEmpty]: Start isEmpty. Operand 1326 states and 1884 transitions. [2022-04-07 01:01:48,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-04-07 01:01:48,600 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:01:48,600 INFO L499 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, 1] [2022-04-07 01:01:48,600 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-04-07 01:01:48,600 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:01:48,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:01:48,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1811818387, now seen corresponding path program 1 times [2022-04-07 01:01:48,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:01:48,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [26154803] [2022-04-07 01:01:48,601 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 01:01:48,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1811818387, now seen corresponding path program 2 times [2022-04-07 01:01:48,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:01:48,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143413189] [2022-04-07 01:01:48,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:01:48,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:01:48,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:48,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:01:48,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:48,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 01:01:48,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:48,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-07 01:01:48,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:48,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-04-07 01:01:48,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:48,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 01:01:48,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:48,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:01:48,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:01:48,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143413189] [2022-04-07 01:01:48,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143413189] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:01:48,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:01:48,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-07 01:01:48,858 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:01:48,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [26154803] [2022-04-07 01:01:48,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [26154803] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:01:48,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:01:48,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-07 01:01:48,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632970010] [2022-04-07 01:01:48,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:01:48,859 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-07 01:01:48,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:01:48,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-07 01:01:48,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-04-07 01:01:48,860 INFO L87 Difference]: Start difference. First operand 1326 states and 1884 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 3 states have internal predecessors, (43), 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) [2022-04-07 01:01:55,522 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 [] [2022-04-07 01:01:58,026 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:02:01,770 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:02:02,803 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:02:04,826 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:02:06,904 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:02:09,718 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:02:11,123 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:02:14,503 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:02:16,747 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:02:18,771 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:02:21,388 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:02:23,530 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:02:24,737 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 [] [2022-04-07 01:02:25,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:02:25,906 INFO L93 Difference]: Finished difference Result 1626 states and 2418 transitions. [2022-04-07 01:02:25,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-07 01:02:25,906 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 3 states have internal predecessors, (43), 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 55 [2022-04-07 01:02:25,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:02:25,913 INFO L225 Difference]: With dead ends: 1626 [2022-04-07 01:02:25,913 INFO L226 Difference]: Without dead ends: 1600 [2022-04-07 01:02:25,915 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-04-07 01:02:25,915 INFO L913 BasicCegarLoop]: 776 mSDtfsCounter, 2286 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 1234 mSolverCounterSat, 982 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2333 SdHoareTripleChecker+Valid, 1170 SdHoareTripleChecker+Invalid, 2227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 982 IncrementalHoareTripleChecker+Valid, 1234 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.3s IncrementalHoareTripleChecker+Time [2022-04-07 01:02:25,915 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2333 Valid, 1170 Invalid, 2227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [982 Valid, 1234 Invalid, 11 Unknown, 0 Unchecked, 36.3s Time] [2022-04-07 01:02:25,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1600 states. [2022-04-07 01:02:26,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1600 to 1274. [2022-04-07 01:02:26,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1274 states, 985 states have (on average 1.385786802030457) internal successors, (1365), 984 states have internal predecessors, (1365), 189 states have call successors, (189), 83 states have call predecessors, (189), 99 states have return successors, (264), 206 states have call predecessors, (264), 182 states have call successors, (264) [2022-04-07 01:02:26,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 1818 transitions. [2022-04-07 01:02:26,235 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 1818 transitions. Word has length 55 [2022-04-07 01:02:26,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:02:26,235 INFO L478 AbstractCegarLoop]: Abstraction has 1274 states and 1818 transitions. [2022-04-07 01:02:26,236 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 3 states have internal predecessors, (43), 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) [2022-04-07 01:02:26,236 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 1818 transitions. [2022-04-07 01:02:26,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-04-07 01:02:26,239 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:02:26,239 INFO L499 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, 1] [2022-04-07 01:02:26,239 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-04-07 01:02:26,239 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:02:26,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:02:26,239 INFO L85 PathProgramCache]: Analyzing trace with hash -650041914, now seen corresponding path program 1 times [2022-04-07 01:02:26,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:02:26,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1019363383] [2022-04-07 01:02:26,240 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 01:02:26,240 INFO L85 PathProgramCache]: Analyzing trace with hash -650041914, now seen corresponding path program 2 times [2022-04-07 01:02:26,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:02:26,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649838206] [2022-04-07 01:02:26,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:02:26,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:02:26,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:26,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:02:26,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:26,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 01:02:26,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:26,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-07 01:02:26,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:26,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-04-07 01:02:26,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:26,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 01:02:26,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:26,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:02:26,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:02:26,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649838206] [2022-04-07 01:02:26,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649838206] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:02:26,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:02:26,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-07 01:02:26,551 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:02:26,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1019363383] [2022-04-07 01:02:26,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1019363383] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:02:26,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:02:26,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-07 01:02:26,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407858634] [2022-04-07 01:02:26,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:02:26,552 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-07 01:02:26,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:02:26,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-07 01:02:26,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-04-07 01:02:26,553 INFO L87 Difference]: Start difference. First operand 1274 states and 1818 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 4 states have internal predecessors, (43), 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) [2022-04-07 01:02:30,272 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 [] [2022-04-07 01:02:36,736 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:02:38,776 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:02:41,329 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:02:43,700 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:02:44,729 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:02:47,728 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:02:49,910 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:02:51,217 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:02:53,233 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:02:55,300 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:02:56,964 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:02:59,100 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:03:02,362 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:03:04,397 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:03:06,634 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:03:09,396 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:03:11,610 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:03:12,793 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:03:14,812 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:03:17,531 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:03:20,352 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 [] [2022-04-07 01:03:21,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:03:21,685 INFO L93 Difference]: Finished difference Result 1589 states and 2362 transitions. [2022-04-07 01:03:21,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-07 01:03:21,685 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 4 states have internal predecessors, (43), 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 55 [2022-04-07 01:03:21,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:03:21,692 INFO L225 Difference]: With dead ends: 1589 [2022-04-07 01:03:21,692 INFO L226 Difference]: Without dead ends: 1564 [2022-04-07 01:03:21,693 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-04-07 01:03:21,693 INFO L913 BasicCegarLoop]: 753 mSDtfsCounter, 2294 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 1926 mSolverCounterSat, 990 mSolverCounterUnsat, 17 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2342 SdHoareTripleChecker+Valid, 1518 SdHoareTripleChecker+Invalid, 2933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 990 IncrementalHoareTripleChecker+Valid, 1926 IncrementalHoareTripleChecker+Invalid, 17 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54.2s IncrementalHoareTripleChecker+Time [2022-04-07 01:03:21,693 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2342 Valid, 1518 Invalid, 2933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [990 Valid, 1926 Invalid, 17 Unknown, 0 Unchecked, 54.2s Time] [2022-04-07 01:03:21,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1564 states. [2022-04-07 01:03:21,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1564 to 1277. [2022-04-07 01:03:21,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1277 states, 988 states have (on average 1.3856275303643724) internal successors, (1369), 987 states have internal predecessors, (1369), 189 states have call successors, (189), 83 states have call predecessors, (189), 99 states have return successors, (264), 206 states have call predecessors, (264), 182 states have call successors, (264) [2022-04-07 01:03:21,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1277 states to 1277 states and 1822 transitions. [2022-04-07 01:03:21,969 INFO L78 Accepts]: Start accepts. Automaton has 1277 states and 1822 transitions. Word has length 55 [2022-04-07 01:03:21,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:03:21,969 INFO L478 AbstractCegarLoop]: Abstraction has 1277 states and 1822 transitions. [2022-04-07 01:03:21,969 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 4 states have internal predecessors, (43), 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) [2022-04-07 01:03:21,970 INFO L276 IsEmpty]: Start isEmpty. Operand 1277 states and 1822 transitions. [2022-04-07 01:03:21,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-04-07 01:03:21,972 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:03:21,972 INFO L499 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, 1] [2022-04-07 01:03:21,972 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-04-07 01:03:21,973 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:03:21,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:03:21,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1650780676, now seen corresponding path program 1 times [2022-04-07 01:03:21,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:03:21,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [131317873] [2022-04-07 01:03:21,974 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 01:03:21,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1650780676, now seen corresponding path program 2 times [2022-04-07 01:03:21,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:03:21,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476835882] [2022-04-07 01:03:21,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:03:21,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:03:22,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:22,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:03:22,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:22,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 01:03:22,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:22,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-07 01:03:22,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:22,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-04-07 01:03:22,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:22,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 01:03:22,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:22,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:03:22,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:03:22,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476835882] [2022-04-07 01:03:22,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476835882] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:03:22,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:03:22,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-07 01:03:22,272 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:03:22,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [131317873] [2022-04-07 01:03:22,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [131317873] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:03:22,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:03:22,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-07 01:03:22,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089294128] [2022-04-07 01:03:22,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:03:22,273 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-07 01:03:22,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:03:22,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-07 01:03:22,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-04-07 01:03:22,274 INFO L87 Difference]: Start difference. First operand 1277 states and 1822 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 7 states have internal predecessors, (43), 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) [2022-04-07 01:03:27,998 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 [] [2022-04-07 01:03:32,864 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:03:36,453 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:03:39,194 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:03:41,218 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:03:43,239 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:03:44,442 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:03:46,661 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:03:49,581 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:03:53,874 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:03:57,213 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:03:58,549 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:04:00,566 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:04:02,585 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:04:04,796 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:04:06,965 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:04:08,816 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:04:10,549 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 [] [2022-04-07 01:04:11,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:04:11,007 INFO L93 Difference]: Finished difference Result 1594 states and 2366 transitions. [2022-04-07 01:04:11,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-04-07 01:04:11,007 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 7 states have internal predecessors, (43), 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 55 [2022-04-07 01:04:11,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:04:11,013 INFO L225 Difference]: With dead ends: 1594 [2022-04-07 01:04:11,013 INFO L226 Difference]: Without dead ends: 1533 [2022-04-07 01:04:11,014 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2022-04-07 01:04:11,015 INFO L913 BasicCegarLoop]: 748 mSDtfsCounter, 2884 mSDsluCounter, 1229 mSDsCounter, 0 mSdLazyCounter, 3100 mSolverCounterSat, 1308 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2932 SdHoareTripleChecker+Valid, 1977 SdHoareTripleChecker+Invalid, 4418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1308 IncrementalHoareTripleChecker+Valid, 3100 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.4s IncrementalHoareTripleChecker+Time [2022-04-07 01:04:11,015 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2932 Valid, 1977 Invalid, 4418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1308 Valid, 3100 Invalid, 10 Unknown, 0 Unchecked, 47.4s Time] [2022-04-07 01:04:11,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1533 states. [2022-04-07 01:04:11,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1533 to 1251. [2022-04-07 01:04:11,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1251 states, 966 states have (on average 1.3892339544513457) internal successors, (1342), 972 states have internal predecessors, (1342), 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) [2022-04-07 01:04:11,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1251 states to 1251 states and 1784 transitions. [2022-04-07 01:04:11,432 INFO L78 Accepts]: Start accepts. Automaton has 1251 states and 1784 transitions. Word has length 55 [2022-04-07 01:04:11,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:04:11,432 INFO L478 AbstractCegarLoop]: Abstraction has 1251 states and 1784 transitions. [2022-04-07 01:04:11,433 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 7 states have internal predecessors, (43), 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) [2022-04-07 01:04:11,433 INFO L276 IsEmpty]: Start isEmpty. Operand 1251 states and 1784 transitions. [2022-04-07 01:04:11,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-04-07 01:04:11,436 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:04:11,436 INFO L499 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, 1, 1, 1, 1, 1, 1] [2022-04-07 01:04:11,436 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-04-07 01:04:11,436 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:04:11,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:04:11,436 INFO L85 PathProgramCache]: Analyzing trace with hash 2140205313, now seen corresponding path program 1 times [2022-04-07 01:04:11,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:04:11,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [91295320] [2022-04-07 01:04:11,437 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 01:04:11,437 INFO L85 PathProgramCache]: Analyzing trace with hash 2140205313, now seen corresponding path program 2 times [2022-04-07 01:04:11,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:04:11,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041869039] [2022-04-07 01:04:11,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:04:11,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:04:11,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:11,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:04:11,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:11,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 01:04:11,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:11,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-07 01:04:11,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:11,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-07 01:04:11,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:11,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-04-07 01:04:11,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:11,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:04:11,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:04:11,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041869039] [2022-04-07 01:04:11,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041869039] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:04:11,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:04:11,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-07 01:04:11,730 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:04:11,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [91295320] [2022-04-07 01:04:11,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [91295320] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:04:11,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:04:11,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-07 01:04:11,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432241148] [2022-04-07 01:04:11,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:04:11,731 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-07 01:04:11,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:04:11,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-07 01:04:11,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-04-07 01:04:11,732 INFO L87 Difference]: Start difference. First operand 1251 states and 1784 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 3 states have internal predecessors, (44), 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) [2022-04-07 01:04:19,935 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 [] [2022-04-07 01:04:21,964 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:04:24,611 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:04:27,395 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:04:31,904 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:04:33,984 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:04:36,016 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:04:38,988 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:04:41,019 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:04:42,645 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:04:44,836 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:04:47,306 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:04:49,324 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:04:51,341 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 [] [2022-04-07 01:04:51,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:04:51,625 INFO L93 Difference]: Finished difference Result 2248 states and 3288 transitions. [2022-04-07 01:04:51,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-07 01:04:51,626 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 3 states have internal predecessors, (44), 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 60 [2022-04-07 01:04:51,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:04:51,634 INFO L225 Difference]: With dead ends: 2248 [2022-04-07 01:04:51,634 INFO L226 Difference]: Without dead ends: 1600 [2022-04-07 01:04:51,648 INFO L912 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 [2022-04-07 01:04:51,648 INFO L913 BasicCegarLoop]: 882 mSDtfsCounter, 1640 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 2041 mSolverCounterSat, 803 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1699 SdHoareTripleChecker+Valid, 1841 SdHoareTripleChecker+Invalid, 2856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 803 IncrementalHoareTripleChecker+Valid, 2041 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.0s IncrementalHoareTripleChecker+Time [2022-04-07 01:04:51,648 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1699 Valid, 1841 Invalid, 2856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [803 Valid, 2041 Invalid, 12 Unknown, 0 Unchecked, 39.0s Time] [2022-04-07 01:04:51,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1600 states. [2022-04-07 01:04:51,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1600 to 1251. [2022-04-07 01:04:51,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1251 states, 966 states have (on average 1.3881987577639752) internal successors, (1341), 972 states have internal predecessors, (1341), 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) [2022-04-07 01:04:52,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1251 states to 1251 states and 1783 transitions. [2022-04-07 01:04:52,002 INFO L78 Accepts]: Start accepts. Automaton has 1251 states and 1783 transitions. Word has length 60 [2022-04-07 01:04:52,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:04:52,003 INFO L478 AbstractCegarLoop]: Abstraction has 1251 states and 1783 transitions. [2022-04-07 01:04:52,003 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 3 states have internal predecessors, (44), 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) [2022-04-07 01:04:52,003 INFO L276 IsEmpty]: Start isEmpty. Operand 1251 states and 1783 transitions. [2022-04-07 01:04:52,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-04-07 01:04:52,005 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:04:52,005 INFO L499 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, 1, 1] [2022-04-07 01:04:52,006 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-04-07 01:04:52,006 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:04:52,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:04:52,007 INFO L85 PathProgramCache]: Analyzing trace with hash 339212706, now seen corresponding path program 1 times [2022-04-07 01:04:52,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:04:52,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [779223739] [2022-04-07 01:04:52,008 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 01:04:52,008 INFO L85 PathProgramCache]: Analyzing trace with hash 339212706, now seen corresponding path program 2 times [2022-04-07 01:04:52,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:04:52,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652458335] [2022-04-07 01:04:52,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:04:52,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:04:52,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:52,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:04:52,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:52,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 01:04:52,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:52,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-07 01:04:52,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:52,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-04-07 01:04:52,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:52,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 01:04:52,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:52,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:04:52,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:04:52,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652458335] [2022-04-07 01:04:52,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652458335] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:04:52,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:04:52,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-07 01:04:52,345 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:04:52,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [779223739] [2022-04-07 01:04:52,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [779223739] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:04:52,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:04:52,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-07 01:04:52,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758425544] [2022-04-07 01:04:52,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:04:52,345 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-07 01:04:52,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:04:52,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-07 01:04:52,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-04-07 01:04:52,346 INFO L87 Difference]: Start difference. First operand 1251 states and 1783 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-07 01:04:57,051 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 [] [2022-04-07 01:05:01,539 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:05:03,822 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:05:06,713 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:05:08,745 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:05:11,353 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:05:13,528 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:05:17,064 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:05:19,344 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:05:21,370 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:05:23,390 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:05:25,346 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:05:27,214 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:05:32,526 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:05:33,753 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:05:36,053 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:05:38,083 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:05:40,110 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:05:42,466 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:05:45,840 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:05:48,174 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:05:49,231 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:05:51,826 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:05:53,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:05:53,784 INFO L93 Difference]: Finished difference Result 2771 states and 4052 transitions. [2022-04-07 01:05:53,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-07 01:05:53,785 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 56 [2022-04-07 01:05:53,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:05:53,798 INFO L225 Difference]: With dead ends: 2771 [2022-04-07 01:05:53,798 INFO L226 Difference]: Without dead ends: 1528 [2022-04-07 01:05:53,804 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-04-07 01:05:53,805 INFO L913 BasicCegarLoop]: 833 mSDtfsCounter, 715 mSDsluCounter, 792 mSDsCounter, 0 mSdLazyCounter, 2930 mSolverCounterSat, 440 mSolverCounterUnsat, 18 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 59.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 742 SdHoareTripleChecker+Valid, 1625 SdHoareTripleChecker+Invalid, 3388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 440 IncrementalHoareTripleChecker+Valid, 2930 IncrementalHoareTripleChecker+Invalid, 18 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60.6s IncrementalHoareTripleChecker+Time [2022-04-07 01:05:53,806 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [742 Valid, 1625 Invalid, 3388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [440 Valid, 2930 Invalid, 18 Unknown, 0 Unchecked, 60.6s Time] [2022-04-07 01:05:53,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1528 states. [2022-04-07 01:05:54,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1528 to 1254. [2022-04-07 01:05:54,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1254 states, 969 states have (on average 1.3869969040247678) internal successors, (1344), 975 states have internal predecessors, (1344), 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) [2022-04-07 01:05:54,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1254 states to 1254 states and 1786 transitions. [2022-04-07 01:05:54,129 INFO L78 Accepts]: Start accepts. Automaton has 1254 states and 1786 transitions. Word has length 56 [2022-04-07 01:05:54,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:05:54,129 INFO L478 AbstractCegarLoop]: Abstraction has 1254 states and 1786 transitions. [2022-04-07 01:05:54,129 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-07 01:05:54,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1254 states and 1786 transitions. [2022-04-07 01:05:54,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-04-07 01:05:54,133 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:05:54,133 INFO L499 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:05:54,133 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-04-07 01:05:54,133 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:05:54,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:05:54,134 INFO L85 PathProgramCache]: Analyzing trace with hash -308157176, now seen corresponding path program 1 times [2022-04-07 01:05:54,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:05:54,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [27108069] [2022-04-07 01:05:54,142 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:05:54,142 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:05:54,142 INFO L85 PathProgramCache]: Analyzing trace with hash -308157176, now seen corresponding path program 2 times [2022-04-07 01:05:54,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:05:54,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607880815] [2022-04-07 01:05:54,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:05:54,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:05:54,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:05:54,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:05:54,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:05:54,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-07 01:05:54,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:05:54,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-04-07 01:05:54,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:05:54,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-07 01:05:54,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:05:54,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 01:05:54,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:05:54,487 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-07 01:05:54,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:05:54,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607880815] [2022-04-07 01:05:54,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607880815] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:05:54,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046726279] [2022-04-07 01:05:54,490 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:05:54,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:05:54,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:05:54,492 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:05:54,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-07 01:05:55,105 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:05:55,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:05:55,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 912 conjuncts, 34 conjunts are in the unsatisfiable core [2022-04-07 01:05:55,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:05:55,799 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-07 01:05:55,800 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:05:55,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046726279] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:05:55,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:05:55,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [8] total 19 [2022-04-07 01:05:55,801 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:05:55,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [27108069] [2022-04-07 01:05:55,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [27108069] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:05:55,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:05:55,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-07 01:05:55,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109859061] [2022-04-07 01:05:55,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:05:55,801 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-07 01:05:55,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:05:55,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-07 01:05:55,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2022-04-07 01:05:55,802 INFO L87 Difference]: Start difference. First operand 1254 states and 1786 transitions. Second operand has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 11 states have internal predecessors, (50), 4 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-04-07 01:05:59,758 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:06:03,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:06:03,118 INFO L93 Difference]: Finished difference Result 1328 states and 1867 transitions. [2022-04-07 01:06:03,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-04-07 01:06:03,118 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 11 states have internal predecessors, (50), 4 states have call successors, (7), 3 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 62 [2022-04-07 01:06:03,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:06:03,124 INFO L225 Difference]: With dead ends: 1328 [2022-04-07 01:06:03,124 INFO L226 Difference]: Without dead ends: 1305 [2022-04-07 01:06:03,125 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=121, Invalid=635, Unknown=0, NotChecked=0, Total=756 [2022-04-07 01:06:03,125 INFO L913 BasicCegarLoop]: 833 mSDtfsCounter, 1308 mSDsluCounter, 3384 mSDsCounter, 0 mSdLazyCounter, 2105 mSolverCounterSat, 362 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1346 SdHoareTripleChecker+Valid, 4217 SdHoareTripleChecker+Invalid, 2467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 362 IncrementalHoareTripleChecker+Valid, 2105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-04-07 01:06:03,125 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1346 Valid, 4217 Invalid, 2467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [362 Valid, 2105 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2022-04-07 01:06:03,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1305 states. [2022-04-07 01:06:03,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1305 to 1253. [2022-04-07 01:06:03,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1253 states, 968 states have (on average 1.3863636363636365) internal successors, (1342), 974 states have internal predecessors, (1342), 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) [2022-04-07 01:06:03,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1253 states to 1253 states and 1784 transitions. [2022-04-07 01:06:03,486 INFO L78 Accepts]: Start accepts. Automaton has 1253 states and 1784 transitions. Word has length 62 [2022-04-07 01:06:03,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:06:03,487 INFO L478 AbstractCegarLoop]: Abstraction has 1253 states and 1784 transitions. [2022-04-07 01:06:03,487 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 11 states have internal predecessors, (50), 4 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-04-07 01:06:03,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1253 states and 1784 transitions. [2022-04-07 01:06:03,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-04-07 01:06:03,489 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:06:03,489 INFO L499 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:06:03,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-07 01:06:03,703 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-04-07 01:06:03,703 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:06:03,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:06:03,704 INFO L85 PathProgramCache]: Analyzing trace with hash 497026437, now seen corresponding path program 1 times [2022-04-07 01:06:03,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:06:03,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1068315429] [2022-04-07 01:06:03,705 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:06:03,705 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:06:03,706 INFO L85 PathProgramCache]: Analyzing trace with hash 497026437, now seen corresponding path program 2 times [2022-04-07 01:06:03,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:06:03,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066274524] [2022-04-07 01:06:03,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:06:03,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:06:03,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:03,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:06:03,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:03,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-07 01:06:03,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:03,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-04-07 01:06:03,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:03,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-07 01:06:03,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:03,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 01:06:03,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:03,993 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-07 01:06:03,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:06:03,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066274524] [2022-04-07 01:06:03,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066274524] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:06:03,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223771500] [2022-04-07 01:06:03,993 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:06:03,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:06:03,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:06:03,994 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:06:03,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-07 01:06:04,630 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:06:04,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:06:04,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 913 conjuncts, 17 conjunts are in the unsatisfiable core [2022-04-07 01:06:04,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:06:04,913 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-07 01:06:04,913 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:06:04,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223771500] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:06:04,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:06:04,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 15 [2022-04-07 01:06:04,914 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:06:04,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1068315429] [2022-04-07 01:06:04,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1068315429] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:06:04,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:06:04,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-07 01:06:04,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368724961] [2022-04-07 01:06:04,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:06:04,915 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-07 01:06:04,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:06:04,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-07 01:06:04,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-04-07 01:06:04,915 INFO L87 Difference]: Start difference. First operand 1253 states and 1784 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 7 states have internal predecessors, (51), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-07 01:06:05,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:06:05,372 INFO L93 Difference]: Finished difference Result 1275 states and 1806 transitions. [2022-04-07 01:06:05,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-07 01:06:05,372 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 7 states have internal predecessors, (51), 2 states have call successors, (7), 2 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 63 [2022-04-07 01:06:05,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:06:05,377 INFO L225 Difference]: With dead ends: 1275 [2022-04-07 01:06:05,377 INFO L226 Difference]: Without dead ends: 1252 [2022-04-07 01:06:05,378 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-04-07 01:06:05,378 INFO L913 BasicCegarLoop]: 936 mSDtfsCounter, 6 mSDsluCounter, 5558 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 6494 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-07 01:06:05,378 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 6494 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-07 01:06:05,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2022-04-07 01:06:05,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 1252. [2022-04-07 01:06:05,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1252 states, 967 states have (on average 1.3857290589451914) internal successors, (1340), 973 states have internal predecessors, (1340), 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) [2022-04-07 01:06:05,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 1782 transitions. [2022-04-07 01:06:05,666 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 1782 transitions. Word has length 63 [2022-04-07 01:06:05,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:06:05,666 INFO L478 AbstractCegarLoop]: Abstraction has 1252 states and 1782 transitions. [2022-04-07 01:06:05,666 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 7 states have internal predecessors, (51), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-07 01:06:05,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 1782 transitions. [2022-04-07 01:06:05,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-04-07 01:06:05,668 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:06:05,669 INFO L499 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:06:05,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-07 01:06:05,883 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-04-07 01:06:05,883 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:06:05,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:06:05,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1089557179, now seen corresponding path program 1 times [2022-04-07 01:06:05,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:06:05,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1014028110] [2022-04-07 01:06:05,885 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:06:05,885 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:06:05,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1089557179, now seen corresponding path program 2 times [2022-04-07 01:06:05,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:06:05,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76231523] [2022-04-07 01:06:05,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:06:05,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:06:06,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:06,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:06:06,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:06,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-07 01:06:06,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:06,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-04-07 01:06:06,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:06,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-07 01:06:06,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:06,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 01:06:06,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:06,234 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-07 01:06:06,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:06:06,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76231523] [2022-04-07 01:06:06,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76231523] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:06:06,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164222992] [2022-04-07 01:06:06,235 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:06:06,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:06:06,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:06:06,236 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:06:06,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-07 01:06:06,871 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:06:06,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:06:06,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 912 conjuncts, 17 conjunts are in the unsatisfiable core [2022-04-07 01:06:06,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:06:07,161 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-07 01:06:07,161 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:06:07,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164222992] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:06:07,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:06:07,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 15 [2022-04-07 01:06:07,162 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:06:07,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1014028110] [2022-04-07 01:06:07,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1014028110] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:06:07,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:06:07,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-07 01:06:07,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299928370] [2022-04-07 01:06:07,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:06:07,162 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-07 01:06:07,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:06:07,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-07 01:06:07,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-04-07 01:06:07,163 INFO L87 Difference]: Start difference. First operand 1252 states and 1782 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 7 states have internal predecessors, (51), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-07 01:06:07,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:06:07,594 INFO L93 Difference]: Finished difference Result 1264 states and 1794 transitions. [2022-04-07 01:06:07,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-07 01:06:07,595 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 7 states have internal predecessors, (51), 2 states have call successors, (7), 2 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 63 [2022-04-07 01:06:07,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:06:07,600 INFO L225 Difference]: With dead ends: 1264 [2022-04-07 01:06:07,600 INFO L226 Difference]: Without dead ends: 1231 [2022-04-07 01:06:07,601 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-04-07 01:06:07,601 INFO L913 BasicCegarLoop]: 934 mSDtfsCounter, 4 mSDsluCounter, 6458 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 7392 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-07 01:06:07,601 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 7392 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-07 01:06:07,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2022-04-07 01:06:07,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 1231. [2022-04-07 01:06:07,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1231 states, 950 states have (on average 1.391578947368421) internal successors, (1322), 956 states have internal predecessors, (1322), 187 states have call successors, (187), 81 states have call predecessors, (187), 93 states have return successors, (251), 193 states have call predecessors, (251), 180 states have call successors, (251) [2022-04-07 01:06:07,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 1760 transitions. [2022-04-07 01:06:07,943 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 1760 transitions. Word has length 63 [2022-04-07 01:06:07,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:06:07,943 INFO L478 AbstractCegarLoop]: Abstraction has 1231 states and 1760 transitions. [2022-04-07 01:06:07,943 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 7 states have internal predecessors, (51), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-07 01:06:07,943 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 1760 transitions. [2022-04-07 01:06:07,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-04-07 01:06:07,945 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:06:07,945 INFO L499 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:06:07,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-07 01:06:08,159 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-04-07 01:06:08,159 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:06:08,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:06:08,160 INFO L85 PathProgramCache]: Analyzing trace with hash -388507538, now seen corresponding path program 1 times [2022-04-07 01:06:08,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:06:08,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1051753269] [2022-04-07 01:06:08,161 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:06:08,161 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:06:08,161 INFO L85 PathProgramCache]: Analyzing trace with hash -388507538, now seen corresponding path program 2 times [2022-04-07 01:06:08,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:06:08,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881199270] [2022-04-07 01:06:08,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:06:08,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:06:08,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:08,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:06:08,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:08,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-07 01:06:08,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:08,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-04-07 01:06:08,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:08,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-04-07 01:06:08,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:08,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-04-07 01:06:08,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:08,452 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-07 01:06:08,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:06:08,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881199270] [2022-04-07 01:06:08,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881199270] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:06:08,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:06:08,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-07 01:06:08,453 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:06:08,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1051753269] [2022-04-07 01:06:08,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1051753269] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:06:08,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:06:08,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-07 01:06:08,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107625094] [2022-04-07 01:06:08,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:06:08,453 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-07 01:06:08,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:06:08,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-07 01:06:08,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-04-07 01:06:08,454 INFO L87 Difference]: Start difference. First operand 1231 states and 1760 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (10), 8 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-07 01:06:15,615 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 [] [2022-04-07 01:06:18,153 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:06:19,940 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:06:23,334 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:06:25,363 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:06:27,424 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:06:31,572 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:06:33,787 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:06:35,804 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:06:37,529 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:06:39,557 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:06:41,715 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:06:43,745 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:06:44,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:06:44,761 INFO L93 Difference]: Finished difference Result 1599 states and 2367 transitions. [2022-04-07 01:06:44,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-07 01:06:44,761 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (10), 8 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 67 [2022-04-07 01:06:44,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:06:44,766 INFO L225 Difference]: With dead ends: 1599 [2022-04-07 01:06:44,766 INFO L226 Difference]: Without dead ends: 1519 [2022-04-07 01:06:44,767 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2022-04-07 01:06:44,767 INFO L913 BasicCegarLoop]: 759 mSDtfsCounter, 1621 mSDsluCounter, 828 mSDsCounter, 0 mSdLazyCounter, 1675 mSolverCounterSat, 750 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1646 SdHoareTripleChecker+Valid, 1587 SdHoareTripleChecker+Invalid, 2436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 750 IncrementalHoareTripleChecker+Valid, 1675 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.4s IncrementalHoareTripleChecker+Time [2022-04-07 01:06:44,767 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1646 Valid, 1587 Invalid, 2436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [750 Valid, 1675 Invalid, 11 Unknown, 0 Unchecked, 35.4s Time] [2022-04-07 01:06:44,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1519 states. [2022-04-07 01:06:45,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1519 to 1220. [2022-04-07 01:06:45,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1220 states, 943 states have (on average 1.3923647932131495) internal successors, (1313), 949 states have internal predecessors, (1313), 185 states have call successors, (185), 79 states have call predecessors, (185), 91 states have return successors, (249), 191 states have call predecessors, (249), 178 states have call successors, (249) [2022-04-07 01:06:45,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 1747 transitions. [2022-04-07 01:06:45,116 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 1747 transitions. Word has length 67 [2022-04-07 01:06:45,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:06:45,117 INFO L478 AbstractCegarLoop]: Abstraction has 1220 states and 1747 transitions. [2022-04-07 01:06:45,117 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (10), 8 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-07 01:06:45,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 1747 transitions. [2022-04-07 01:06:45,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-04-07 01:06:45,118 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:06:45,118 INFO L499 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:06:45,118 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-04-07 01:06:45,118 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:06:45,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:06:45,119 INFO L85 PathProgramCache]: Analyzing trace with hash 629303588, now seen corresponding path program 1 times [2022-04-07 01:06:45,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:06:45,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1423307724] [2022-04-07 01:06:45,120 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:06:45,120 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:06:45,120 INFO L85 PathProgramCache]: Analyzing trace with hash 629303588, now seen corresponding path program 2 times [2022-04-07 01:06:45,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:06:45,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530926864] [2022-04-07 01:06:45,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:06:45,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:06:45,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:45,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:06:45,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:45,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-07 01:06:45,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:45,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-04-07 01:06:45,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:45,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-04-07 01:06:45,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:45,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-07 01:06:45,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:45,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:06:45,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:45,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-07 01:06:45,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:45,478 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-07 01:06:45,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:06:45,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530926864] [2022-04-07 01:06:45,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530926864] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:06:45,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:06:45,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-07 01:06:45,478 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:06:45,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1423307724] [2022-04-07 01:06:45,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1423307724] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:06:45,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:06:45,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-07 01:06:45,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118484408] [2022-04-07 01:06:45,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:06:45,479 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-07 01:06:45,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:06:45,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-07 01:06:45,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-04-07 01:06:45,480 INFO L87 Difference]: Start difference. First operand 1220 states and 1747 transitions. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-07 01:06:50,381 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:06:51,924 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:06:56,683 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:06:59,851 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:07:01,873 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:07:03,510 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:07:06,710 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:07:10,039 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:07:14,937 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:07:16,633 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:07:18,655 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:07:20,714 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:07:23,195 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:07:25,078 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:07:28,243 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:07:30,273 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:07:34,116 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:07:36,374 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:07:39,817 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:07:44,206 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:07:44,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:07:44,529 INFO L93 Difference]: Finished difference Result 1571 states and 2344 transitions. [2022-04-07 01:07:44,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-07 01:07:44,529 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2022-04-07 01:07:44,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:07:44,534 INFO L225 Difference]: With dead ends: 1571 [2022-04-07 01:07:44,534 INFO L226 Difference]: Without dead ends: 1539 [2022-04-07 01:07:44,535 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-04-07 01:07:44,536 INFO L913 BasicCegarLoop]: 809 mSDtfsCounter, 1176 mSDsluCounter, 1157 mSDsCounter, 0 mSdLazyCounter, 3551 mSolverCounterSat, 653 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1207 SdHoareTripleChecker+Valid, 1966 SdHoareTripleChecker+Invalid, 4215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 653 IncrementalHoareTripleChecker+Valid, 3551 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 58.0s IncrementalHoareTripleChecker+Time [2022-04-07 01:07:44,536 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1207 Valid, 1966 Invalid, 4215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [653 Valid, 3551 Invalid, 11 Unknown, 0 Unchecked, 58.0s Time] [2022-04-07 01:07:44,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1539 states. [2022-04-07 01:07:44,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1539 to 1221. [2022-04-07 01:07:44,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1221 states, 944 states have (on average 1.3919491525423728) internal successors, (1314), 950 states have internal predecessors, (1314), 185 states have call successors, (185), 79 states have call predecessors, (185), 91 states have return successors, (249), 191 states have call predecessors, (249), 178 states have call successors, (249) [2022-04-07 01:07:44,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1221 states to 1221 states and 1748 transitions. [2022-04-07 01:07:44,925 INFO L78 Accepts]: Start accepts. Automaton has 1221 states and 1748 transitions. Word has length 70 [2022-04-07 01:07:44,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:07:44,925 INFO L478 AbstractCegarLoop]: Abstraction has 1221 states and 1748 transitions. [2022-04-07 01:07:44,925 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-07 01:07:44,925 INFO L276 IsEmpty]: Start isEmpty. Operand 1221 states and 1748 transitions. [2022-04-07 01:07:44,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-04-07 01:07:44,928 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:07:44,928 INFO L499 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:07:44,928 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-04-07 01:07:44,928 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:07:44,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:07:44,929 INFO L85 PathProgramCache]: Analyzing trace with hash 769852198, now seen corresponding path program 1 times [2022-04-07 01:07:44,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:07:44,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [48372233] [2022-04-07 01:07:44,929 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:07:44,930 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:07:44,930 INFO L85 PathProgramCache]: Analyzing trace with hash 769852198, now seen corresponding path program 2 times [2022-04-07 01:07:44,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:07:44,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995753370] [2022-04-07 01:07:44,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:07:44,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:07:44,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:45,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:07:45,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:45,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-07 01:07:45,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:45,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-04-07 01:07:45,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:45,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-04-07 01:07:45,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:45,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-07 01:07:45,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:45,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:07:45,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:45,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-07 01:07:45,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:45,289 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-07 01:07:45,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:07:45,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995753370] [2022-04-07 01:07:45,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995753370] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:07:45,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:07:45,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-07 01:07:45,290 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:07:45,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [48372233] [2022-04-07 01:07:45,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [48372233] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:07:45,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:07:45,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-07 01:07:45,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351430525] [2022-04-07 01:07:45,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:07:45,290 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-07 01:07:45,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:07:45,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-07 01:07:45,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-04-07 01:07:45,291 INFO L87 Difference]: Start difference. First operand 1221 states and 1748 transitions. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-07 01:07:55,348 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:07:56,443 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:07:58,490 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:08:02,673 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:08:04,700 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 []