/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-7968f31 [2022-03-18 05:40:50,248 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-18 05:40:50,250 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-18 05:40:50,292 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-18 05:40:50,293 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-18 05:40:50,294 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-18 05:40:50,298 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-18 05:40:50,303 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-18 05:40:50,304 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-18 05:40:50,309 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-18 05:40:50,310 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-18 05:40:50,310 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-18 05:40:50,310 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-18 05:40:50,311 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-18 05:40:50,312 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-18 05:40:50,312 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-18 05:40:50,313 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-18 05:40:50,313 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-18 05:40:50,314 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-18 05:40:50,315 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-18 05:40:50,316 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-18 05:40:50,317 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-18 05:40:50,317 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-18 05:40:50,318 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-18 05:40:50,319 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-18 05:40:50,326 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-18 05:40:50,331 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-18 05:40:50,331 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-18 05:40:50,337 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-18 05:40:50,338 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-03-18 05:40:50,349 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-18 05:40:50,349 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-18 05:40:50,352 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-18 05:40:50,353 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-18 05:40:50,353 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-18 05:40:50,353 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-18 05:40:50,353 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-18 05:40:50,353 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-18 05:40:50,353 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-18 05:40:50,354 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-18 05:40:50,354 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-18 05:40:50,354 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-18 05:40:50,354 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-18 05:40:50,354 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-18 05:40:50,354 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-18 05:40:50,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 05:40:50,355 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-18 05:40:50,355 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-18 05:40:50,355 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-18 05:40:50,355 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-18 05:40:50,355 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-18 05:40:50,355 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-03-18 05:40:50,355 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-18 05:40:50,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-18 05:40:50,566 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-18 05:40:50,568 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-18 05:40:50,569 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-18 05:40:50,569 INFO L275 PluginConnector]: CDTParser initialized [2022-03-18 05:40:50,570 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers/cdaudio.i.cil-1.c [2022-03-18 05:40:50,636 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2396676c8/6254979e2fd440f8a7554b2c641d3bcb/FLAGa82aca06e [2022-03-18 05:40:51,188 INFO L306 CDTParser]: Found 1 translation units. [2022-03-18 05:40:51,188 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/cdaudio.i.cil-1.c [2022-03-18 05:40:51,216 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2396676c8/6254979e2fd440f8a7554b2c641d3bcb/FLAGa82aca06e [2022-03-18 05:40:51,676 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2396676c8/6254979e2fd440f8a7554b2c641d3bcb [2022-03-18 05:40:51,679 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-18 05:40:51,680 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-18 05:40:51,688 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-18 05:40:51,688 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-18 05:40:51,707 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-18 05:40:51,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 05:40:51" (1/1) ... [2022-03-18 05:40:51,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a777330 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:40:51, skipping insertion in model container [2022-03-18 05:40:51,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 05:40:51" (1/1) ... [2022-03-18 05:40:51,715 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-18 05:40:51,827 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-18 05:40:52,431 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] [2022-03-18 05:40:52,975 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 05:40:52,983 INFO L203 MainTranslator]: Completed pre-run [2022-03-18 05:40:53,026 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] [2022-03-18 05:40:53,300 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 05:40:53,320 INFO L208 MainTranslator]: Completed translation [2022-03-18 05:40:53,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:40:53 WrapperNode [2022-03-18 05:40:53,320 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-18 05:40:53,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-18 05:40:53,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-18 05:40:53,321 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-18 05:40:53,329 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:40:53" (1/1) ... [2022-03-18 05:40:53,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:40:53" (1/1) ... [2022-03-18 05:40:53,388 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:40:53" (1/1) ... [2022-03-18 05:40:53,389 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:40:53" (1/1) ... [2022-03-18 05:40:53,526 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:40:53" (1/1) ... [2022-03-18 05:40:53,554 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:40:53" (1/1) ... [2022-03-18 05:40:53,577 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:40:53" (1/1) ... [2022-03-18 05:40:53,603 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-18 05:40:53,604 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-18 05:40:53,605 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-18 05:40:53,605 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-18 05:40:53,606 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:40:53" (1/1) ... [2022-03-18 05:40:53,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 05:40:53,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:40:53,652 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) [2022-03-18 05:40:53,711 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 [2022-03-18 05:40:53,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-18 05:40:53,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-18 05:40:53,721 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-18 05:40:53,722 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlWriteRegistryValue [2022-03-18 05:40:53,722 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedIncrement [2022-03-18 05:40:53,722 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedDecrement [2022-03-18 05:40:53,722 INFO L138 BoogieDeclarations]: Found implementation of procedure MmLockPagableDataSection [2022-03-18 05:40:53,722 INFO L138 BoogieDeclarations]: Found implementation of procedure IoOpenDeviceRegistryKey [2022-03-18 05:40:53,722 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-03-18 05:40:53,722 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-03-18 05:40:53,722 INFO L138 BoogieDeclarations]: Found implementation of procedure SendSrbSynchronous [2022-03-18 05:40:53,722 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioAddDevice [2022-03-18 05:40:53,722 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSignalCompletion [2022-03-18 05:40:53,723 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioStartDevice [2022-03-18 05:40:53,723 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPnp [2022-03-18 05:40:53,724 INFO L138 BoogieDeclarations]: Found implementation of procedure DriverEntry [2022-03-18 05:40:53,724 INFO L138 BoogieDeclarations]: Found implementation of procedure NecSupportNeeded [2022-03-18 05:40:53,724 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioReadWrite [2022-03-18 05:40:53,724 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioDeviceControl [2022-03-18 05:40:53,724 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSendToNextDriver [2022-03-18 05:40:53,724 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioIsPlayActive [2022-03-18 05:40:53,724 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioNECDeviceControl [2022-03-18 05:40:53,724 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPioneerDeviceControl [2022-03-18 05:40:53,724 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioDenonDeviceControl [2022-03-18 05:40:53,724 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioHitachiSendPauseCommand [2022-03-18 05:40:53,724 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioHitachiDeviceControl [2022-03-18 05:40:53,724 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio535DeviceControl [2022-03-18 05:40:53,724 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio435DeviceControl [2022-03-18 05:40:53,724 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioAtapiDeviceControl [2022-03-18 05:40:53,725 INFO L138 BoogieDeclarations]: Found implementation of procedure HpCdrProcessLastSession [2022-03-18 05:40:53,725 INFO L138 BoogieDeclarations]: Found implementation of procedure HPCdrCompletion [2022-03-18 05:40:53,725 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioHPCdrDeviceControl [2022-03-18 05:40:53,725 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioForwardIrpSynchronous [2022-03-18 05:40:53,725 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioUnload [2022-03-18 05:40:53,725 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPower [2022-03-18 05:40:53,725 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-03-18 05:40:53,725 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-18 05:40:53,725 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_malloc [2022-03-18 05:40:53,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAcquireFastMutex [2022-03-18 05:40:53,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ExReleaseFastMutex [2022-03-18 05:40:53,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2022-03-18 05:40:53,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ExFreePool [2022-03-18 05:40:53,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertHeadList [2022-03-18 05:40:53,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertTailList [2022-03-18 05:40:53,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedRemoveHeadList [2022-03-18 05:40:53,726 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAllocateMdl [2022-03-18 05:40:53,726 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAttachDeviceToDeviceStack [2022-03-18 05:40:53,726 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildAsynchronousFsdRequest [2022-03-18 05:40:53,726 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2022-03-18 05:40:53,726 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateDevice [2022-03-18 05:40:53,726 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateSymbolicLink [2022-03-18 05:40:53,726 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteDevice [2022-03-18 05:40:53,726 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2022-03-18 05:40:53,726 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDetachDevice [2022-03-18 05:40:53,726 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeIrp [2022-03-18 05:40:53,726 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeMdl [2022-03-18 05:40:53,727 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2022-03-18 05:40:53,727 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2022-03-18 05:40:53,727 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2022-03-18 05:40:53,727 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReleaseCancelSpinLock [2022-03-18 05:40:53,727 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-03-18 05:40:53,727 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetHardErrorOrVerifyDevice [2022-03-18 05:40:53,727 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-03-18 05:40:53,727 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-03-18 05:40:53,727 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-03-18 05:40:53,727 INFO L138 BoogieDeclarations]: Found implementation of procedure KeAcquireSpinLockRaiseToDpc [2022-03-18 05:40:53,727 INFO L138 BoogieDeclarations]: Found implementation of procedure KeDelayExecutionThread [2022-03-18 05:40:53,728 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeEvent [2022-03-18 05:40:53,728 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSemaphore [2022-03-18 05:40:53,728 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSpinLock [2022-03-18 05:40:53,728 INFO L138 BoogieDeclarations]: Found implementation of procedure KeReleaseSemaphore [2022-03-18 05:40:53,728 INFO L138 BoogieDeclarations]: Found implementation of procedure KfReleaseSpinLock [2022-03-18 05:40:53,728 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-03-18 05:40:53,728 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-03-18 05:40:53,728 INFO L138 BoogieDeclarations]: Found implementation of procedure MmAllocateContiguousMemory [2022-03-18 05:40:53,728 INFO L138 BoogieDeclarations]: Found implementation of procedure MmFreeContiguousMemory [2022-03-18 05:40:53,728 INFO L138 BoogieDeclarations]: Found implementation of procedure MmMapLockedPagesSpecifyCache [2022-03-18 05:40:53,729 INFO L138 BoogieDeclarations]: Found implementation of procedure MmPageEntireDriver [2022-03-18 05:40:53,729 INFO L138 BoogieDeclarations]: Found implementation of procedure MmResetDriverPaging [2022-03-18 05:40:53,729 INFO L138 BoogieDeclarations]: Found implementation of procedure MmUnlockPages [2022-03-18 05:40:53,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2022-03-18 05:40:53,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ObfDereferenceObject [2022-03-18 05:40:53,729 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-03-18 05:40:53,729 INFO L138 BoogieDeclarations]: Found implementation of procedure PoStartNextPowerIrp [2022-03-18 05:40:53,730 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2022-03-18 05:40:53,730 INFO L138 BoogieDeclarations]: Found implementation of procedure PsTerminateSystemThread [2022-03-18 05:40:53,730 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlAnsiStringToUnicodeString [2022-03-18 05:40:53,730 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCompareMemory [2022-03-18 05:40:53,730 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCopyUnicodeString [2022-03-18 05:40:53,730 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlDeleteRegistryValue [2022-03-18 05:40:53,730 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlFreeUnicodeString [2022-03-18 05:40:53,730 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitString [2022-03-18 05:40:53,730 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitUnicodeString [2022-03-18 05:40:53,730 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlQueryRegistryValues [2022-03-18 05:40:53,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-03-18 05:40:53,731 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-03-18 05:40:53,731 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-03-18 05:40:53,731 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-18 05:40:53,731 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-18 05:40:53,731 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-18 05:40:53,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-18 05:40:53,731 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-03-18 05:40:53,731 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-18 05:40:53,731 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-03-18 05:40:53,731 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2022-03-18 05:40:53,731 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-03-18 05:40:53,731 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2022-03-18 05:40:53,731 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-03-18 05:40:53,732 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2022-03-18 05:40:53,732 INFO L130 BoogieDeclarations]: Found specification of procedure RtlQueryRegistryValues [2022-03-18 05:40:53,732 INFO L130 BoogieDeclarations]: Found specification of procedure RtlWriteRegistryValue [2022-03-18 05:40:53,732 INFO L130 BoogieDeclarations]: Found specification of procedure RtlDeleteRegistryValue [2022-03-18 05:40:53,732 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitString [2022-03-18 05:40:53,733 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitUnicodeString [2022-03-18 05:40:53,733 INFO L130 BoogieDeclarations]: Found specification of procedure RtlAnsiStringToUnicodeString [2022-03-18 05:40:53,733 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCopyUnicodeString [2022-03-18 05:40:53,733 INFO L130 BoogieDeclarations]: Found specification of procedure RtlFreeUnicodeString [2022-03-18 05:40:53,793 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCompareMemory [2022-03-18 05:40:53,793 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedIncrement [2022-03-18 05:40:53,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-18 05:40:53,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-18 05:40:53,794 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedDecrement [2022-03-18 05:40:53,794 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeEvent [2022-03-18 05:40:53,794 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-03-18 05:40:53,794 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSemaphore [2022-03-18 05:40:53,794 INFO L130 BoogieDeclarations]: Found specification of procedure KeReleaseSemaphore [2022-03-18 05:40:53,794 INFO L130 BoogieDeclarations]: Found specification of procedure KeDelayExecutionThread [2022-03-18 05:40:53,794 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-03-18 05:40:53,794 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSpinLock [2022-03-18 05:40:53,794 INFO L130 BoogieDeclarations]: Found specification of procedure KfReleaseSpinLock [2022-03-18 05:40:53,794 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2022-03-18 05:40:53,794 INFO L130 BoogieDeclarations]: Found specification of procedure ExFreePool [2022-03-18 05:40:53,794 INFO L130 BoogieDeclarations]: Found specification of procedure ExAcquireFastMutex [2022-03-18 05:40:53,794 INFO L130 BoogieDeclarations]: Found specification of procedure ExReleaseFastMutex [2022-03-18 05:40:53,794 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertHeadList [2022-03-18 05:40:53,794 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertTailList [2022-03-18 05:40:53,794 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedRemoveHeadList [2022-03-18 05:40:53,794 INFO L130 BoogieDeclarations]: Found specification of procedure MmUnlockPages [2022-03-18 05:40:53,794 INFO L130 BoogieDeclarations]: Found specification of procedure MmMapLockedPagesSpecifyCache [2022-03-18 05:40:53,795 INFO L130 BoogieDeclarations]: Found specification of procedure MmAllocateContiguousMemory [2022-03-18 05:40:53,795 INFO L130 BoogieDeclarations]: Found specification of procedure MmFreeContiguousMemory [2022-03-18 05:40:53,795 INFO L130 BoogieDeclarations]: Found specification of procedure MmLockPagableDataSection [2022-03-18 05:40:53,795 INFO L130 BoogieDeclarations]: Found specification of procedure MmResetDriverPaging [2022-03-18 05:40:53,795 INFO L130 BoogieDeclarations]: Found specification of procedure MmPageEntireDriver [2022-03-18 05:40:53,795 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2022-03-18 05:40:53,795 INFO L130 BoogieDeclarations]: Found specification of procedure PsTerminateSystemThread [2022-03-18 05:40:53,795 INFO L130 BoogieDeclarations]: Found specification of procedure IoAllocateMdl [2022-03-18 05:40:53,795 INFO L130 BoogieDeclarations]: Found specification of procedure IoAttachDeviceToDeviceStack [2022-03-18 05:40:53,795 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildAsynchronousFsdRequest [2022-03-18 05:40:53,795 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2022-03-18 05:40:53,795 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-03-18 05:40:53,795 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-03-18 05:40:53,795 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateDevice [2022-03-18 05:40:53,795 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateSymbolicLink [2022-03-18 05:40:53,795 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteDevice [2022-03-18 05:40:53,795 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2022-03-18 05:40:53,796 INFO L130 BoogieDeclarations]: Found specification of procedure IoDetachDevice [2022-03-18 05:40:53,796 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeIrp [2022-03-18 05:40:53,796 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeMdl [2022-03-18 05:40:53,796 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2022-03-18 05:40:53,796 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2022-03-18 05:40:53,796 INFO L130 BoogieDeclarations]: Found specification of procedure IoReleaseCancelSpinLock [2022-03-18 05:40:53,796 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetHardErrorOrVerifyDevice [2022-03-18 05:40:53,796 INFO L130 BoogieDeclarations]: Found specification of procedure IoOpenDeviceRegistryKey [2022-03-18 05:40:53,796 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2022-03-18 05:40:53,796 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-03-18 05:40:53,796 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-03-18 05:40:53,796 INFO L130 BoogieDeclarations]: Found specification of procedure PoStartNextPowerIrp [2022-03-18 05:40:53,796 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2022-03-18 05:40:53,796 INFO L130 BoogieDeclarations]: Found specification of procedure ObfDereferenceObject [2022-03-18 05:40:53,796 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-03-18 05:40:53,796 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-03-18 05:40:53,797 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-03-18 05:40:53,798 INFO L130 BoogieDeclarations]: Found specification of procedure DriverEntry [2022-03-18 05:40:53,798 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioReadWrite [2022-03-18 05:40:53,798 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioDeviceControl [2022-03-18 05:40:53,798 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSendToNextDriver [2022-03-18 05:40:53,798 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioIsPlayActive [2022-03-18 05:40:53,798 INFO L130 BoogieDeclarations]: Found specification of procedure NecSupportNeeded [2022-03-18 05:40:53,798 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioNECDeviceControl [2022-03-18 05:40:53,798 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPioneerDeviceControl [2022-03-18 05:40:53,798 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioDenonDeviceControl [2022-03-18 05:40:53,798 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioHitachiSendPauseCommand [2022-03-18 05:40:53,799 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioHitachiDeviceControl [2022-03-18 05:40:53,799 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio535DeviceControl [2022-03-18 05:40:53,799 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio435DeviceControl [2022-03-18 05:40:53,799 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioAtapiDeviceControl [2022-03-18 05:40:53,799 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioHPCdrDeviceControl [2022-03-18 05:40:53,799 INFO L130 BoogieDeclarations]: Found specification of procedure HpCdrProcessLastSession [2022-03-18 05:40:53,799 INFO L130 BoogieDeclarations]: Found specification of procedure HPCdrCompletion [2022-03-18 05:40:53,799 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPower [2022-03-18 05:40:53,799 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioForwardIrpSynchronous [2022-03-18 05:40:53,799 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioUnload [2022-03-18 05:40:53,799 INFO L130 BoogieDeclarations]: Found specification of procedure SendSrbSynchronous [2022-03-18 05:40:53,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-18 05:40:53,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-18 05:40:53,799 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioAddDevice [2022-03-18 05:40:53,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-03-18 05:40:53,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-03-18 05:40:53,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-03-18 05:40:53,800 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSignalCompletion [2022-03-18 05:40:53,800 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioStartDevice [2022-03-18 05:40:53,800 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPnp [2022-03-18 05:40:53,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-03-18 05:40:53,800 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-03-18 05:40:53,800 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-18 05:40:53,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-03-18 05:40:53,800 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_malloc [2022-03-18 05:40:53,800 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-03-18 05:40:53,800 INFO L130 BoogieDeclarations]: Found specification of procedure KeAcquireSpinLockRaiseToDpc [2022-03-18 05:40:53,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-18 05:40:53,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-18 05:40:53,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-18 05:40:53,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-03-18 05:40:53,800 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-03-18 05:40:53,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-03-18 05:40:53,800 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-03-18 05:40:54,395 INFO L234 CfgBuilder]: Building ICFG [2022-03-18 05:40:54,397 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-18 05:40:54,433 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:40:54,485 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:40:54,485 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:40:54,486 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:40:54,491 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:40:54,491 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:40:54,496 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:40:54,500 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:40:54,500 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:40:54,501 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:40:54,516 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:40:54,516 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:40:54,517 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:41:00,005 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume !false; [2022-03-18 05:41:00,005 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume false; [2022-03-18 05:41:00,046 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:41:00,051 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:41:00,051 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:41:00,052 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:41:00,057 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:41:00,057 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:41:00,057 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:41:00,064 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:41:00,064 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:41:00,064 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:41:00,072 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:41:00,072 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:41:00,076 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:41:05,715 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2022-03-18 05:41:05,715 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2022-03-18 05:41:05,747 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:41:05,860 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##39: assume false; [2022-03-18 05:41:05,860 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##40: assume !false; [2022-03-18 05:41:05,864 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:41:05,868 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:41:05,868 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:41:05,868 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:41:05,889 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2022-03-18 05:41:05,889 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2022-03-18 05:41:05,889 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:41:05,892 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:41:05,892 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:41:05,892 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:41:05,901 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:41:05,901 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:41:05,911 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:41:05,915 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:41:05,915 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:41:05,915 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:41:05,919 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:41:05,919 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:41:06,258 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:41:09,282 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2022-03-18 05:41:09,283 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2022-03-18 05:41:09,292 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:41:15,399 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume false; [2022-03-18 05:41:15,399 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##22: assume !false; [2022-03-18 05:41:15,403 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:41:15,419 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-03-18 05:41:15,419 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-03-18 05:41:15,443 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:41:15,446 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:41:15,446 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:41:15,472 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:41:15,522 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##32: assume false; [2022-03-18 05:41:15,523 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##33: assume !false; [2022-03-18 05:41:15,632 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:41:15,635 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:41:15,635 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:41:15,747 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:41:15,750 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:41:15,750 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:41:15,750 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:41:20,704 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume !false; [2022-03-18 05:41:20,705 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume false; [2022-03-18 05:41:20,709 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:41:20,726 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2022-03-18 05:41:20,726 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2022-03-18 05:41:20,731 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:41:20,739 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-03-18 05:41:20,739 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-03-18 05:41:20,747 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:41:20,751 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:41:20,751 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:41:21,054 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:41:21,087 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2022-03-18 05:41:21,087 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2022-03-18 05:41:21,087 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L3709: #res := 0; [2022-03-18 05:41:21,087 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:41:21,091 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:41:21,092 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:41:21,134 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:41:25,441 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2022-03-18 05:41:25,441 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2022-03-18 05:41:25,520 INFO L275 CfgBuilder]: Performing block encoding [2022-03-18 05:41:25,540 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-18 05:41:25,540 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2022-03-18 05:41:25,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 05:41:25 BoogieIcfgContainer [2022-03-18 05:41:25,544 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-18 05:41:25,546 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-18 05:41:25,546 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-18 05:41:25,550 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-18 05:41:25,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.03 05:40:51" (1/3) ... [2022-03-18 05:41:25,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30ccd5bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 05:41:25, skipping insertion in model container [2022-03-18 05:41:25,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:40:53" (2/3) ... [2022-03-18 05:41:25,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30ccd5bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 05:41:25, skipping insertion in model container [2022-03-18 05:41:25,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 05:41:25" (3/3) ... [2022-03-18 05:41:25,555 INFO L111 eAbstractionObserver]: Analyzing ICFG cdaudio.i.cil-1.c [2022-03-18 05:41:25,569 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-18 05:41:25,569 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-18 05:41:25,616 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-18 05:41:25,621 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 [2022-03-18 05:41:25,622 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-18 05:41:25,648 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) [2022-03-18 05:41:25,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-03-18 05:41:25,653 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:41:25,654 INFO L500 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] [2022-03-18 05:41:25,654 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:41:25,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:41:25,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1165007651, now seen corresponding path program 1 times [2022-03-18 05:41:25,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:41:25,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [499584300] [2022-03-18 05:41:25,669 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:41:25,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1165007651, now seen corresponding path program 2 times [2022-03-18 05:41:25,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:41:25,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382696603] [2022-03-18 05:41:25,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:41:25,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:41:25,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:41:26,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:41:26,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:41:26,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:41:26,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:41:26,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:41:26,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:41:26,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382696603] [2022-03-18 05:41:26,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382696603] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:41:26,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:41:26,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 05:41:26,310 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:41:26,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [499584300] [2022-03-18 05:41:26,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [499584300] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:41:26,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:41:26,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 05:41:26,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931206533] [2022-03-18 05:41:26,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:41:26,315 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-18 05:41:26,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:41:26,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-18 05:41:26,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-18 05:41:26,343 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) [2022-03-18 05:41:31,443 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 [] [2022-03-18 05:41:34,423 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:41:36,500 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:41:38,892 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:41:42,833 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:41:45,120 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:41:48,113 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:41:50,514 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:41:52,546 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:41:52,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:41:52,795 INFO L93 Difference]: Finished difference Result 1537 states and 2438 transitions. [2022-03-18 05:41:52,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-18 05:41:52,797 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 [2022-03-18 05:41:52,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:41:52,820 INFO L225 Difference]: With dead ends: 1537 [2022-03-18 05:41:52,820 INFO L226 Difference]: Without dead ends: 842 [2022-03-18 05:41:52,837 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-18 05:41:52,848 INFO L912 BasicCegarLoop]: 930 mSDtfsCounter, 484 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 1973 mSolverCounterSat, 187 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 1302 SdHoareTripleChecker+Invalid, 2166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 1973 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.1s IncrementalHoareTripleChecker+Time [2022-03-18 05:41:52,851 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [508 Valid, 1302 Invalid, 2166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 1973 Invalid, 6 Unknown, 0 Unchecked, 26.1s Time] [2022-03-18 05:41:52,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2022-03-18 05:41:52,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 679. [2022-03-18 05:41:52,952 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) [2022-03-18 05:41:52,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 991 transitions. [2022-03-18 05:41:52,956 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 991 transitions. Word has length 26 [2022-03-18 05:41:52,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:41:52,957 INFO L478 AbstractCegarLoop]: Abstraction has 679 states and 991 transitions. [2022-03-18 05:41:52,957 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) [2022-03-18 05:41:52,959 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 991 transitions. [2022-03-18 05:41:52,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-18 05:41:52,960 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:41:52,960 INFO L500 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] [2022-03-18 05:41:52,960 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-18 05:41:52,960 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:41:52,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:41:52,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1118603387, now seen corresponding path program 1 times [2022-03-18 05:41:52,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:41:52,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1896042189] [2022-03-18 05:41:52,961 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:41:52,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1118603387, now seen corresponding path program 2 times [2022-03-18 05:41:52,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:41:52,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36732439] [2022-03-18 05:41:52,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:41:52,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:41:52,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:41:53,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:41:53,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:41:53,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:41:53,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:41:53,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:41:53,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:41:53,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:41:53,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:41:53,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36732439] [2022-03-18 05:41:53,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36732439] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:41:53,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:41:53,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 05:41:53,207 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:41:53,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1896042189] [2022-03-18 05:41:53,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1896042189] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:41:53,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:41:53,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 05:41:53,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518671583] [2022-03-18 05:41:53,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:41:53,208 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 05:41:53,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:41:53,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 05:41:53,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-18 05:41:53,209 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) [2022-03-18 05:41:57,149 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:41:59,183 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:42:02,893 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:42:04,930 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:42:07,199 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:42:09,450 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:42:12,020 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:42:13,304 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:42:15,326 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 [] [2022-03-18 05:42:15,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:42:15,813 INFO L93 Difference]: Finished difference Result 1457 states and 2151 transitions. [2022-03-18 05:42:15,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 05:42:15,814 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 [2022-03-18 05:42:15,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:42:15,820 INFO L225 Difference]: With dead ends: 1457 [2022-03-18 05:42:15,820 INFO L226 Difference]: Without dead ends: 1180 [2022-03-18 05:42:15,821 INFO L911 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 [2022-03-18 05:42:15,821 INFO L912 BasicCegarLoop]: 1194 mSDtfsCounter, 1965 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 1761 mSolverCounterSat, 573 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2003 SdHoareTripleChecker+Valid, 1912 SdHoareTripleChecker+Invalid, 2341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 573 IncrementalHoareTripleChecker+Valid, 1761 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.4s IncrementalHoareTripleChecker+Time [2022-03-18 05:42:15,822 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2003 Valid, 1912 Invalid, 2341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [573 Valid, 1761 Invalid, 7 Unknown, 0 Unchecked, 22.4s Time] [2022-03-18 05:42:15,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2022-03-18 05:42:15,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 991. [2022-03-18 05:42:15,963 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) [2022-03-18 05:42:15,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1448 transitions. [2022-03-18 05:42:15,972 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1448 transitions. Word has length 31 [2022-03-18 05:42:15,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:42:15,972 INFO L478 AbstractCegarLoop]: Abstraction has 991 states and 1448 transitions. [2022-03-18 05:42:15,972 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) [2022-03-18 05:42:15,972 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1448 transitions. [2022-03-18 05:42:15,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-03-18 05:42:15,974 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:42:15,974 INFO L500 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] [2022-03-18 05:42:15,974 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-18 05:42:15,974 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:42:15,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:42:15,974 INFO L85 PathProgramCache]: Analyzing trace with hash 425780201, now seen corresponding path program 1 times [2022-03-18 05:42:15,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:42:15,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [649133608] [2022-03-18 05:42:15,975 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:42:15,975 INFO L85 PathProgramCache]: Analyzing trace with hash 425780201, now seen corresponding path program 2 times [2022-03-18 05:42:15,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:42:15,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874882471] [2022-03-18 05:42:15,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:42:15,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:42:16,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:42:16,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:42:16,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:42:16,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:42:16,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:42:16,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:42:16,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:42:16,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:42:16,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:42:16,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874882471] [2022-03-18 05:42:16,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874882471] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:42:16,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:42:16,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 05:42:16,232 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:42:16,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [649133608] [2022-03-18 05:42:16,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [649133608] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:42:16,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:42:16,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 05:42:16,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021318280] [2022-03-18 05:42:16,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:42:16,234 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 05:42:16,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:42:16,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 05:42:16,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-18 05:42:16,235 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) [2022-03-18 05:42:22,752 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 [] [2022-03-18 05:42:25,445 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:42:28,635 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:42:30,626 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:42:31,895 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:42:34,049 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:42:36,292 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:42:37,610 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:42:39,709 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:42:42,069 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:42:44,089 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:42:45,714 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:42:47,736 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:42:50,100 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:42:52,273 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:42:55,670 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:42:59,401 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:43:00,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:43:00,182 INFO L93 Difference]: Finished difference Result 2293 states and 3447 transitions. [2022-03-18 05:43:00,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-18 05:43:00,184 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 [2022-03-18 05:43:00,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:43:00,191 INFO L225 Difference]: With dead ends: 2293 [2022-03-18 05:43:00,191 INFO L226 Difference]: Without dead ends: 1837 [2022-03-18 05:43:00,203 INFO L911 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 [2022-03-18 05:43:00,204 INFO L912 BasicCegarLoop]: 1375 mSDtfsCounter, 1087 mSDsluCounter, 798 mSDsCounter, 0 mSdLazyCounter, 3250 mSolverCounterSat, 292 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1139 SdHoareTripleChecker+Valid, 2173 SdHoareTripleChecker+Invalid, 3552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 3250 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.6s IncrementalHoareTripleChecker+Time [2022-03-18 05:43:00,204 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1139 Valid, 2173 Invalid, 3552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 3250 Invalid, 10 Unknown, 0 Unchecked, 43.6s Time] [2022-03-18 05:43:00,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1837 states. [2022-03-18 05:43:00,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1837 to 1172. [2022-03-18 05:43:00,302 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) [2022-03-18 05:43:00,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1733 transitions. [2022-03-18 05:43:00,307 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1733 transitions. Word has length 38 [2022-03-18 05:43:00,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:43:00,307 INFO L478 AbstractCegarLoop]: Abstraction has 1172 states and 1733 transitions. [2022-03-18 05:43:00,307 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) [2022-03-18 05:43:00,307 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1733 transitions. [2022-03-18 05:43:00,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-18 05:43:00,313 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:43:00,313 INFO L500 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] [2022-03-18 05:43:00,313 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-18 05:43:00,313 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:43:00,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:43:00,313 INFO L85 PathProgramCache]: Analyzing trace with hash 76033968, now seen corresponding path program 1 times [2022-03-18 05:43:00,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:43:00,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [677398560] [2022-03-18 05:43:00,317 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:43:00,317 INFO L85 PathProgramCache]: Analyzing trace with hash 76033968, now seen corresponding path program 2 times [2022-03-18 05:43:00,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:43:00,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104927879] [2022-03-18 05:43:00,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:43:00,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:43:00,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:43:00,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:43:00,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:43:00,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:43:00,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:43:00,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:43:00,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:43:00,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:43:00,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:43:00,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104927879] [2022-03-18 05:43:00,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104927879] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:43:00,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:43:00,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 05:43:00,599 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:43:00,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [677398560] [2022-03-18 05:43:00,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [677398560] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:43:00,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:43:00,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 05:43:00,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207432190] [2022-03-18 05:43:00,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:43:00,600 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-18 05:43:00,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:43:00,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-18 05:43:00,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-18 05:43:00,601 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) [2022-03-18 05:43:07,248 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:43:09,290 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:43:12,703 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:43:15,377 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:43:18,063 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:43:20,099 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:43:22,367 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:43:24,651 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:43:25,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:43:25,050 INFO L93 Difference]: Finished difference Result 2221 states and 3345 transitions. [2022-03-18 05:43:25,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-18 05:43:25,051 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 [2022-03-18 05:43:25,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:43:25,057 INFO L225 Difference]: With dead ends: 2221 [2022-03-18 05:43:25,057 INFO L226 Difference]: Without dead ends: 1514 [2022-03-18 05:43:25,059 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2022-03-18 05:43:25,069 INFO L912 BasicCegarLoop]: 1364 mSDtfsCounter, 3772 mSDsluCounter, 1260 mSDsCounter, 0 mSdLazyCounter, 2670 mSolverCounterSat, 1389 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3803 SdHoareTripleChecker+Valid, 2624 SdHoareTripleChecker+Invalid, 4066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1389 IncrementalHoareTripleChecker+Valid, 2670 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.9s IncrementalHoareTripleChecker+Time [2022-03-18 05:43:25,070 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [3803 Valid, 2624 Invalid, 4066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1389 Valid, 2670 Invalid, 7 Unknown, 0 Unchecked, 23.9s Time] [2022-03-18 05:43:25,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1514 states. [2022-03-18 05:43:25,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1514 to 1166. [2022-03-18 05:43:25,203 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) [2022-03-18 05:43:25,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 1721 transitions. [2022-03-18 05:43:25,207 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 1721 transitions. Word has length 39 [2022-03-18 05:43:25,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:43:25,207 INFO L478 AbstractCegarLoop]: Abstraction has 1166 states and 1721 transitions. [2022-03-18 05:43:25,207 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) [2022-03-18 05:43:25,207 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 1721 transitions. [2022-03-18 05:43:25,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-03-18 05:43:25,208 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:43:25,208 INFO L500 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] [2022-03-18 05:43:25,208 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-18 05:43:25,208 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:43:25,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:43:25,209 INFO L85 PathProgramCache]: Analyzing trace with hash -610227898, now seen corresponding path program 1 times [2022-03-18 05:43:25,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:43:25,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [190291102] [2022-03-18 05:43:25,209 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:43:25,209 INFO L85 PathProgramCache]: Analyzing trace with hash -610227898, now seen corresponding path program 2 times [2022-03-18 05:43:25,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:43:25,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497039701] [2022-03-18 05:43:25,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:43:25,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:43:25,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:43:25,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:43:25,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:43:25,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:43:25,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:43:25,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:43:25,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:43:25,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:43:25,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:43:25,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497039701] [2022-03-18 05:43:25,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497039701] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:43:25,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:43:25,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 05:43:25,486 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:43:25,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [190291102] [2022-03-18 05:43:25,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [190291102] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:43:25,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:43:25,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 05:43:25,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006688661] [2022-03-18 05:43:25,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:43:25,487 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 05:43:25,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:43:25,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 05:43:25,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-18 05:43:25,488 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) [2022-03-18 05:43:30,896 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:43:33,582 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:43:34,773 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:43:36,755 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:43:40,889 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:43:42,927 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:43:44,327 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:43:48,598 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:43:49,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:43:49,207 INFO L93 Difference]: Finished difference Result 2067 states and 3010 transitions. [2022-03-18 05:43:49,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 05:43:49,208 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 [2022-03-18 05:43:49,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:43:49,214 INFO L225 Difference]: With dead ends: 2067 [2022-03-18 05:43:49,214 INFO L226 Difference]: Without dead ends: 1899 [2022-03-18 05:43:49,215 INFO L911 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 [2022-03-18 05:43:49,215 INFO L912 BasicCegarLoop]: 1110 mSDtfsCounter, 1443 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 2273 mSolverCounterSat, 336 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1487 SdHoareTripleChecker+Valid, 1807 SdHoareTripleChecker+Invalid, 2613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 2273 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.3s IncrementalHoareTripleChecker+Time [2022-03-18 05:43:49,216 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1487 Valid, 1807 Invalid, 2613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 2273 Invalid, 4 Unknown, 0 Unchecked, 23.3s Time] [2022-03-18 05:43:49,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2022-03-18 05:43:49,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1631. [2022-03-18 05:43:49,332 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) [2022-03-18 05:43:49,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 2392 transitions. [2022-03-18 05:43:49,336 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 2392 transitions. Word has length 40 [2022-03-18 05:43:49,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:43:49,336 INFO L478 AbstractCegarLoop]: Abstraction has 1631 states and 2392 transitions. [2022-03-18 05:43:49,336 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) [2022-03-18 05:43:49,336 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 2392 transitions. [2022-03-18 05:43:49,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-03-18 05:43:49,337 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:43:49,337 INFO L500 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] [2022-03-18 05:43:49,337 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-18 05:43:49,337 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:43:49,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:43:49,338 INFO L85 PathProgramCache]: Analyzing trace with hash -305283800, now seen corresponding path program 1 times [2022-03-18 05:43:49,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:43:49,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1669100211] [2022-03-18 05:43:49,338 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:43:49,338 INFO L85 PathProgramCache]: Analyzing trace with hash -305283800, now seen corresponding path program 2 times [2022-03-18 05:43:49,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:43:49,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083133677] [2022-03-18 05:43:49,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:43:49,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:43:49,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:43:49,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:43:49,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:43:49,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:43:49,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:43:49,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:43:49,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:43:49,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:43:49,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:43:49,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083133677] [2022-03-18 05:43:49,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083133677] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:43:49,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:43:49,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 05:43:49,508 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:43:49,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1669100211] [2022-03-18 05:43:49,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1669100211] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:43:49,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:43:49,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 05:43:49,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361002117] [2022-03-18 05:43:49,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:43:49,508 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 05:43:49,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:43:49,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 05:43:49,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-18 05:43:49,509 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) [2022-03-18 05:43:52,493 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:43:54,769 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:43:57,015 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:43:59,061 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:44:00,566 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:44:02,641 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:44:04,681 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:44:05,863 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:44:07,015 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:44:10,278 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:44:12,490 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:44:14,524 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:44:16,191 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:44:18,371 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:44:20,410 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:44:21,880 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:44:22,893 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:44:23,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:44:23,110 INFO L93 Difference]: Finished difference Result 1768 states and 2618 transitions. [2022-03-18 05:44:23,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-18 05:44:23,111 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 [2022-03-18 05:44:23,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:44:23,122 INFO L225 Difference]: With dead ends: 1768 [2022-03-18 05:44:23,122 INFO L226 Difference]: Without dead ends: 1764 [2022-03-18 05:44:23,123 INFO L911 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 [2022-03-18 05:44:23,123 INFO L912 BasicCegarLoop]: 904 mSDtfsCounter, 1392 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 1080 mSolverCounterSat, 550 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1416 SdHoareTripleChecker+Valid, 1458 SdHoareTripleChecker+Invalid, 1640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 1080 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.3s IncrementalHoareTripleChecker+Time [2022-03-18 05:44:23,124 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1416 Valid, 1458 Invalid, 1640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 1080 Invalid, 10 Unknown, 0 Unchecked, 33.3s Time] [2022-03-18 05:44:23,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1764 states. [2022-03-18 05:44:23,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1764 to 1630. [2022-03-18 05:44:23,373 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) [2022-03-18 05:44:23,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 2389 transitions. [2022-03-18 05:44:23,378 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 2389 transitions. Word has length 40 [2022-03-18 05:44:23,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:44:23,379 INFO L478 AbstractCegarLoop]: Abstraction has 1630 states and 2389 transitions. [2022-03-18 05:44:23,379 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) [2022-03-18 05:44:23,379 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 2389 transitions. [2022-03-18 05:44:23,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-03-18 05:44:23,382 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:44:23,383 INFO L500 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] [2022-03-18 05:44:23,383 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-18 05:44:23,383 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:44:23,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:44:23,383 INFO L85 PathProgramCache]: Analyzing trace with hash 2118625593, now seen corresponding path program 1 times [2022-03-18 05:44:23,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:44:23,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [438556275] [2022-03-18 05:44:23,384 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:44:23,384 INFO L85 PathProgramCache]: Analyzing trace with hash 2118625593, now seen corresponding path program 2 times [2022-03-18 05:44:23,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:44:23,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765347423] [2022-03-18 05:44:23,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:44:23,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:44:23,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:44:23,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:44:23,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:44:23,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:44:23,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:44:23,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:44:23,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:44:23,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-18 05:44:23,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:44:23,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:44:23,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:44:23,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765347423] [2022-03-18 05:44:23,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765347423] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:44:23,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:44:23,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 05:44:23,692 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:44:23,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [438556275] [2022-03-18 05:44:23,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [438556275] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:44:23,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:44:23,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 05:44:23,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843999241] [2022-03-18 05:44:23,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:44:23,694 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-18 05:44:23,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:44:23,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-18 05:44:23,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-18 05:44:23,695 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) [2022-03-18 05:44:33,237 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:44:35,276 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:44:37,326 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:44:40,174 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:44:42,782 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:44:46,756 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:44:48,797 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:44:50,826 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:44:52,892 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:44:54,138 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:44:58,142 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:45:00,252 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:45:01,997 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:45:04,233 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:45:07,410 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:45:09,801 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:45:10,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:45:10,040 INFO L93 Difference]: Finished difference Result 2734 states and 4044 transitions. [2022-03-18 05:45:10,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-18 05:45:10,040 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 [2022-03-18 05:45:10,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:45:10,045 INFO L225 Difference]: With dead ends: 2734 [2022-03-18 05:45:10,045 INFO L226 Difference]: Without dead ends: 1596 [2022-03-18 05:45:10,048 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2022-03-18 05:45:10,048 INFO L912 BasicCegarLoop]: 966 mSDtfsCounter, 2464 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 2686 mSolverCounterSat, 1268 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2490 SdHoareTripleChecker+Valid, 1674 SdHoareTripleChecker+Invalid, 3965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1268 IncrementalHoareTripleChecker+Valid, 2686 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.6s IncrementalHoareTripleChecker+Time [2022-03-18 05:45:10,048 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2490 Valid, 1674 Invalid, 3965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1268 Valid, 2686 Invalid, 11 Unknown, 0 Unchecked, 45.6s Time] [2022-03-18 05:45:10,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1596 states. [2022-03-18 05:45:10,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1596 to 1203. [2022-03-18 05:45:10,167 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) [2022-03-18 05:45:10,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1742 transitions. [2022-03-18 05:45:10,170 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1742 transitions. Word has length 52 [2022-03-18 05:45:10,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:45:10,170 INFO L478 AbstractCegarLoop]: Abstraction has 1203 states and 1742 transitions. [2022-03-18 05:45:10,170 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) [2022-03-18 05:45:10,170 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1742 transitions. [2022-03-18 05:45:10,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-03-18 05:45:10,171 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:45:10,171 INFO L500 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] [2022-03-18 05:45:10,172 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-18 05:45:10,172 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:45:10,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:45:10,172 INFO L85 PathProgramCache]: Analyzing trace with hash 975245132, now seen corresponding path program 1 times [2022-03-18 05:45:10,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:45:10,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [671963889] [2022-03-18 05:45:10,172 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:45:10,172 INFO L85 PathProgramCache]: Analyzing trace with hash 975245132, now seen corresponding path program 2 times [2022-03-18 05:45:10,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:45:10,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606490809] [2022-03-18 05:45:10,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:45:10,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:45:10,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:45:10,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:45:10,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:45:10,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:45:10,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:45:10,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:45:10,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:45:10,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-18 05:45:10,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:45:10,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:45:10,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:45:10,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606490809] [2022-03-18 05:45:10,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606490809] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:45:10,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:45:10,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-18 05:45:10,375 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:45:10,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [671963889] [2022-03-18 05:45:10,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [671963889] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:45:10,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:45:10,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-18 05:45:10,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60769343] [2022-03-18 05:45:10,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:45:10,376 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-18 05:45:10,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:45:10,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-18 05:45:10,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-03-18 05:45:10,376 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) [2022-03-18 05:45:15,401 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 [] [2022-03-18 05:45:17,218 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:45:19,649 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:45:21,061 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:45:23,902 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:45:25,939 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:45:27,264 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:45:30,720 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:45:34,265 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:45:36,461 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:45:39,909 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:45:42,172 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:45:44,208 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:45:46,444 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:45:49,162 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:45:50,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:45:50,683 INFO L93 Difference]: Finished difference Result 2154 states and 3211 transitions. [2022-03-18 05:45:50,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-18 05:45:50,684 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 [2022-03-18 05:45:50,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:45:50,689 INFO L225 Difference]: With dead ends: 2154 [2022-03-18 05:45:50,689 INFO L226 Difference]: Without dead ends: 1486 [2022-03-18 05:45:50,698 INFO L911 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 [2022-03-18 05:45:50,699 INFO L912 BasicCegarLoop]: 776 mSDtfsCounter, 1780 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 2332 mSolverCounterSat, 719 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1839 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 3062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 719 IncrementalHoareTripleChecker+Valid, 2332 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.8s IncrementalHoareTripleChecker+Time [2022-03-18 05:45:50,699 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1839 Valid, 1203 Invalid, 3062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [719 Valid, 2332 Invalid, 11 Unknown, 0 Unchecked, 39.8s Time] [2022-03-18 05:45:50,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1486 states. [2022-03-18 05:45:50,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1486 to 1200. [2022-03-18 05:45:50,868 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) [2022-03-18 05:45:50,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1200 states to 1200 states and 1731 transitions. [2022-03-18 05:45:50,873 INFO L78 Accepts]: Start accepts. Automaton has 1200 states and 1731 transitions. Word has length 53 [2022-03-18 05:45:50,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:45:50,873 INFO L478 AbstractCegarLoop]: Abstraction has 1200 states and 1731 transitions. [2022-03-18 05:45:50,874 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) [2022-03-18 05:45:50,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1200 states and 1731 transitions. [2022-03-18 05:45:50,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-03-18 05:45:50,877 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:45:50,877 INFO L500 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] [2022-03-18 05:45:50,877 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-18 05:45:50,877 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:45:50,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:45:50,878 INFO L85 PathProgramCache]: Analyzing trace with hash -990249866, now seen corresponding path program 1 times [2022-03-18 05:45:50,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:45:50,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [723267637] [2022-03-18 05:45:50,878 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:45:50,878 INFO L85 PathProgramCache]: Analyzing trace with hash -990249866, now seen corresponding path program 2 times [2022-03-18 05:45:50,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:45:50,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689022804] [2022-03-18 05:45:50,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:45:50,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:45:50,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:45:51,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:45:51,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:45:51,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:45:51,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:45:51,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:45:51,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:45:51,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-18 05:45:51,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:45:51,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:45:51,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:45:51,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:45:51,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:45:51,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689022804] [2022-03-18 05:45:51,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689022804] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:45:51,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:45:51,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 05:45:51,172 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:45:51,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [723267637] [2022-03-18 05:45:51,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [723267637] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:45:51,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:45:51,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 05:45:51,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480015914] [2022-03-18 05:45:51,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:45:51,172 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-18 05:45:51,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:45:51,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-18 05:45:51,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-03-18 05:45:51,173 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) [2022-03-18 05:46:01,357 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:46:03,388 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:46:05,308 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:46:07,357 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:46:10,159 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:46:13,201 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:46:17,307 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:46:19,407 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:46:22,950 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:46:24,100 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:46:26,119 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:46:28,019 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:46:30,349 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:46:32,643 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:46:33,885 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:46:35,350 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:46:37,707 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:46:40,468 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:46:42,516 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 [] [2022-03-18 05:46:42,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:46:42,768 INFO L93 Difference]: Finished difference Result 1832 states and 2719 transitions. [2022-03-18 05:46:42,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-18 05:46:42,768 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 [2022-03-18 05:46:42,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:46:42,775 INFO L225 Difference]: With dead ends: 1832 [2022-03-18 05:46:42,776 INFO L226 Difference]: Without dead ends: 1772 [2022-03-18 05:46:42,777 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=174, Invalid=528, Unknown=0, NotChecked=0, Total=702 [2022-03-18 05:46:42,777 INFO L912 BasicCegarLoop]: 1045 mSDtfsCounter, 2934 mSDsluCounter, 1732 mSDsCounter, 0 mSdLazyCounter, 4413 mSolverCounterSat, 1383 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2967 SdHoareTripleChecker+Valid, 2777 SdHoareTripleChecker+Invalid, 5807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1383 IncrementalHoareTripleChecker+Valid, 4413 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.5s IncrementalHoareTripleChecker+Time [2022-03-18 05:46:42,777 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2967 Valid, 2777 Invalid, 5807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1383 Valid, 4413 Invalid, 11 Unknown, 0 Unchecked, 50.5s Time] [2022-03-18 05:46:42,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1772 states. [2022-03-18 05:46:43,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1772 to 1272. [2022-03-18 05:46:43,007 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) [2022-03-18 05:46:43,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1272 states to 1272 states and 1819 transitions. [2022-03-18 05:46:43,010 INFO L78 Accepts]: Start accepts. Automaton has 1272 states and 1819 transitions. Word has length 53 [2022-03-18 05:46:43,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:46:43,010 INFO L478 AbstractCegarLoop]: Abstraction has 1272 states and 1819 transitions. [2022-03-18 05:46:43,010 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) [2022-03-18 05:46:43,010 INFO L276 IsEmpty]: Start isEmpty. Operand 1272 states and 1819 transitions. [2022-03-18 05:46:43,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-18 05:46:43,012 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:46:43,012 INFO L500 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] [2022-03-18 05:46:43,012 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-18 05:46:43,012 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:46:43,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:46:43,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1812095217, now seen corresponding path program 1 times [2022-03-18 05:46:43,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:46:43,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [617298161] [2022-03-18 05:46:43,013 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:46:43,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1812095217, now seen corresponding path program 2 times [2022-03-18 05:46:43,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:46:43,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539155109] [2022-03-18 05:46:43,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:46:43,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:46:43,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:46:43,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:46:43,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:46:43,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:46:43,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:46:43,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:46:43,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:46:43,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-18 05:46:43,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:46:43,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:46:43,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:46:43,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:46:43,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:46:43,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539155109] [2022-03-18 05:46:43,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539155109] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:46:43,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:46:43,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 05:46:43,300 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:46:43,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [617298161] [2022-03-18 05:46:43,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [617298161] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:46:43,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:46:43,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 05:46:43,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229360689] [2022-03-18 05:46:43,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:46:43,301 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-18 05:46:43,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:46:43,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-18 05:46:43,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-03-18 05:46:43,302 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) [2022-03-18 05:46:53,172 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:46:57,276 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:47:00,141 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:47:02,188 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:47:04,929 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:47:07,065 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:47:09,083 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:47:10,239 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:47:14,318 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:47:18,258 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:47:21,300 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:47:23,325 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:47:25,509 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:47:27,226 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:47:29,467 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:47:31,016 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:47:33,377 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:47:34,855 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:47:37,668 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:47:38,898 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 [] [2022-03-18 05:47:39,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:47:39,119 INFO L93 Difference]: Finished difference Result 1949 states and 2886 transitions. [2022-03-18 05:47:39,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-18 05:47:39,120 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 [2022-03-18 05:47:39,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:47:39,126 INFO L225 Difference]: With dead ends: 1949 [2022-03-18 05:47:39,126 INFO L226 Difference]: Without dead ends: 1937 [2022-03-18 05:47:39,126 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2022-03-18 05:47:39,127 INFO L912 BasicCegarLoop]: 1060 mSDtfsCounter, 3541 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 4075 mSolverCounterSat, 1607 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3591 SdHoareTripleChecker+Valid, 2805 SdHoareTripleChecker+Invalid, 5694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1607 IncrementalHoareTripleChecker+Valid, 4075 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54.7s IncrementalHoareTripleChecker+Time [2022-03-18 05:47:39,127 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [3591 Valid, 2805 Invalid, 5694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1607 Valid, 4075 Invalid, 12 Unknown, 0 Unchecked, 54.7s Time] [2022-03-18 05:47:39,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1937 states. [2022-03-18 05:47:39,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1937 to 1326. [2022-03-18 05:47:39,372 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) [2022-03-18 05:47:39,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1326 states to 1326 states and 1884 transitions. [2022-03-18 05:47:39,375 INFO L78 Accepts]: Start accepts. Automaton has 1326 states and 1884 transitions. Word has length 55 [2022-03-18 05:47:39,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:47:39,376 INFO L478 AbstractCegarLoop]: Abstraction has 1326 states and 1884 transitions. [2022-03-18 05:47:39,376 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) [2022-03-18 05:47:39,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1326 states and 1884 transitions. [2022-03-18 05:47:39,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-18 05:47:39,378 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:47:39,378 INFO L500 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] [2022-03-18 05:47:39,378 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-18 05:47:39,378 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:47:39,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:47:39,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1811818387, now seen corresponding path program 1 times [2022-03-18 05:47:39,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:47:39,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [278100794] [2022-03-18 05:47:39,379 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:47:39,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1811818387, now seen corresponding path program 2 times [2022-03-18 05:47:39,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:47:39,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191486150] [2022-03-18 05:47:39,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:47:39,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:47:39,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:47:39,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:47:39,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:47:39,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:47:39,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:47:39,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:47:39,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:47:39,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-18 05:47:39,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:47:39,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:47:39,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:47:39,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:47:39,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:47:39,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191486150] [2022-03-18 05:47:39,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191486150] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:47:39,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:47:39,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-18 05:47:39,624 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:47:39,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [278100794] [2022-03-18 05:47:39,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [278100794] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:47:39,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:47:39,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-18 05:47:39,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397429986] [2022-03-18 05:47:39,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:47:39,625 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-18 05:47:39,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:47:39,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-18 05:47:39,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-03-18 05:47:39,625 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) [2022-03-18 05:47:42,201 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 [] [2022-03-18 05:47:45,124 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:47:47,895 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:47:50,770 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:47:54,068 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:47:57,450 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:47:59,479 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:48:02,112 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:48:04,304 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:48:06,338 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:48:08,460 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:48:11,240 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:48:13,272 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:48:13,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:48:13,906 INFO L93 Difference]: Finished difference Result 1626 states and 2418 transitions. [2022-03-18 05:48:13,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-18 05:48:13,906 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 [2022-03-18 05:48:13,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:48:13,911 INFO L225 Difference]: With dead ends: 1626 [2022-03-18 05:48:13,911 INFO L226 Difference]: Without dead ends: 1600 [2022-03-18 05:48:13,912 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-03-18 05:48:13,912 INFO L912 BasicCegarLoop]: 776 mSDtfsCounter, 2286 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 1234 mSolverCounterSat, 982 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2333 SdHoareTripleChecker+Valid, 1170 SdHoareTripleChecker+Invalid, 2224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 982 IncrementalHoareTripleChecker+Valid, 1234 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.6s IncrementalHoareTripleChecker+Time [2022-03-18 05:48:13,912 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2333 Valid, 1170 Invalid, 2224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [982 Valid, 1234 Invalid, 8 Unknown, 0 Unchecked, 33.6s Time] [2022-03-18 05:48:13,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1600 states. [2022-03-18 05:48:14,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1600 to 1274. [2022-03-18 05:48:14,105 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) [2022-03-18 05:48:14,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 1818 transitions. [2022-03-18 05:48:14,107 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 1818 transitions. Word has length 55 [2022-03-18 05:48:14,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:48:14,107 INFO L478 AbstractCegarLoop]: Abstraction has 1274 states and 1818 transitions. [2022-03-18 05:48:14,108 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) [2022-03-18 05:48:14,108 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 1818 transitions. [2022-03-18 05:48:14,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-18 05:48:14,109 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:48:14,109 INFO L500 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] [2022-03-18 05:48:14,109 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-18 05:48:14,109 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:48:14,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:48:14,110 INFO L85 PathProgramCache]: Analyzing trace with hash -650041914, now seen corresponding path program 1 times [2022-03-18 05:48:14,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:48:14,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1246518272] [2022-03-18 05:48:14,110 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:48:14,110 INFO L85 PathProgramCache]: Analyzing trace with hash -650041914, now seen corresponding path program 2 times [2022-03-18 05:48:14,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:48:14,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840888080] [2022-03-18 05:48:14,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:48:14,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:48:14,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:14,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:48:14,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:14,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:48:14,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:14,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:48:14,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:14,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-18 05:48:14,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:14,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:48:14,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:14,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:48:14,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:48:14,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840888080] [2022-03-18 05:48:14,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840888080] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:48:14,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:48:14,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 05:48:14,367 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:48:14,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1246518272] [2022-03-18 05:48:14,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1246518272] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:48:14,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:48:14,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 05:48:14,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818591199] [2022-03-18 05:48:14,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:48:14,367 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-18 05:48:14,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:48:14,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-18 05:48:14,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-18 05:48:14,368 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) [2022-03-18 05:48:22,352 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:48:23,698 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:48:29,698 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:48:31,566 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:48:33,622 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:48:35,659 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:48:37,699 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:48:41,058 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:48:42,392 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:48:44,594 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:48:47,614 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:48:49,909 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:48:52,486 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:48:54,910 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:48:55,925 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:48:58,029 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:48:58,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:48:58,955 INFO L93 Difference]: Finished difference Result 1589 states and 2362 transitions. [2022-03-18 05:48:58,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 05:48:58,955 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 [2022-03-18 05:48:58,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:48:58,960 INFO L225 Difference]: With dead ends: 1589 [2022-03-18 05:48:58,960 INFO L226 Difference]: Without dead ends: 1564 [2022-03-18 05:48:58,960 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-03-18 05:48:58,960 INFO L912 BasicCegarLoop]: 753 mSDtfsCounter, 2294 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 1931 mSolverCounterSat, 990 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2342 SdHoareTripleChecker+Valid, 1518 SdHoareTripleChecker+Invalid, 2932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 990 IncrementalHoareTripleChecker+Valid, 1931 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.9s IncrementalHoareTripleChecker+Time [2022-03-18 05:48:58,961 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2342 Valid, 1518 Invalid, 2932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [990 Valid, 1931 Invalid, 11 Unknown, 0 Unchecked, 43.9s Time] [2022-03-18 05:48:58,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1564 states. [2022-03-18 05:48:59,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1564 to 1277. [2022-03-18 05:48:59,164 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) [2022-03-18 05:48:59,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1277 states to 1277 states and 1822 transitions. [2022-03-18 05:48:59,167 INFO L78 Accepts]: Start accepts. Automaton has 1277 states and 1822 transitions. Word has length 55 [2022-03-18 05:48:59,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:48:59,167 INFO L478 AbstractCegarLoop]: Abstraction has 1277 states and 1822 transitions. [2022-03-18 05:48:59,167 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) [2022-03-18 05:48:59,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1277 states and 1822 transitions. [2022-03-18 05:48:59,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-18 05:48:59,169 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:48:59,169 INFO L500 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] [2022-03-18 05:48:59,169 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-18 05:48:59,169 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:48:59,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:48:59,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1650780676, now seen corresponding path program 1 times [2022-03-18 05:48:59,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:48:59,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [881765631] [2022-03-18 05:48:59,170 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:48:59,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1650780676, now seen corresponding path program 2 times [2022-03-18 05:48:59,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:48:59,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452217870] [2022-03-18 05:48:59,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:48:59,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:48:59,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:59,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:48:59,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:59,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:48:59,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:59,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:48:59,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:59,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-18 05:48:59,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:59,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:48:59,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:59,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:48:59,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:48:59,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452217870] [2022-03-18 05:48:59,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452217870] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:48:59,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:48:59,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 05:48:59,394 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:48:59,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [881765631] [2022-03-18 05:48:59,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [881765631] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:48:59,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:48:59,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 05:48:59,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932863327] [2022-03-18 05:48:59,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:48:59,395 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-18 05:48:59,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:48:59,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-18 05:48:59,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-03-18 05:48:59,395 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) [2022-03-18 05:49:08,587 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:49:10,620 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:49:15,735 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:49:17,951 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:49:19,977 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:49:24,894 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:49:26,935 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:49:28,618 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:49:31,946 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:49:35,336 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:49:36,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:49:36,090 INFO L93 Difference]: Finished difference Result 1594 states and 2366 transitions. [2022-03-18 05:49:36,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-18 05:49:36,091 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 [2022-03-18 05:49:36,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:49:36,095 INFO L225 Difference]: With dead ends: 1594 [2022-03-18 05:49:36,096 INFO L226 Difference]: Without dead ends: 1533 [2022-03-18 05:49:36,096 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2022-03-18 05:49:36,096 INFO L912 BasicCegarLoop]: 748 mSDtfsCounter, 2884 mSDsluCounter, 1231 mSDsCounter, 0 mSdLazyCounter, 3102 mSolverCounterSat, 1308 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2932 SdHoareTripleChecker+Valid, 1979 SdHoareTripleChecker+Invalid, 4418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1308 IncrementalHoareTripleChecker+Valid, 3102 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.7s IncrementalHoareTripleChecker+Time [2022-03-18 05:49:36,097 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2932 Valid, 1979 Invalid, 4418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1308 Valid, 3102 Invalid, 8 Unknown, 0 Unchecked, 35.7s Time] [2022-03-18 05:49:36,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1533 states. [2022-03-18 05:49:36,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1533 to 1251. [2022-03-18 05:49:36,323 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) [2022-03-18 05:49:36,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1251 states to 1251 states and 1784 transitions. [2022-03-18 05:49:36,327 INFO L78 Accepts]: Start accepts. Automaton has 1251 states and 1784 transitions. Word has length 55 [2022-03-18 05:49:36,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:49:36,327 INFO L478 AbstractCegarLoop]: Abstraction has 1251 states and 1784 transitions. [2022-03-18 05:49:36,327 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) [2022-03-18 05:49:36,327 INFO L276 IsEmpty]: Start isEmpty. Operand 1251 states and 1784 transitions. [2022-03-18 05:49:36,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-18 05:49:36,329 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:49:36,329 INFO L500 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] [2022-03-18 05:49:36,329 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-18 05:49:36,329 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:49:36,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:49:36,330 INFO L85 PathProgramCache]: Analyzing trace with hash 2140205313, now seen corresponding path program 1 times [2022-03-18 05:49:36,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:49:36,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [956463321] [2022-03-18 05:49:36,330 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:49:36,330 INFO L85 PathProgramCache]: Analyzing trace with hash 2140205313, now seen corresponding path program 2 times [2022-03-18 05:49:36,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:49:36,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481658521] [2022-03-18 05:49:36,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:49:36,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:49:36,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:36,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:49:36,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:36,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:49:36,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:36,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:49:36,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:36,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-18 05:49:36,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:36,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-03-18 05:49:36,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:36,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:49:36,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:49:36,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481658521] [2022-03-18 05:49:36,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481658521] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:49:36,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:49:36,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 05:49:36,533 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:49:36,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [956463321] [2022-03-18 05:49:36,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [956463321] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:49:36,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:49:36,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 05:49:36,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951563721] [2022-03-18 05:49:36,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:49:36,533 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-18 05:49:36,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:49:36,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-18 05:49:36,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-03-18 05:49:36,534 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) [2022-03-18 05:49:44,416 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:49:45,714 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:49:48,313 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:49:50,335 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:49:52,379 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:49:55,106 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:49:57,294 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:50:00,043 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:50:02,944 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:50:04,992 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:50:07,320 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:50:10,625 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:50:13,450 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:50:15,503 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:50:15,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:50:15,712 INFO L93 Difference]: Finished difference Result 2248 states and 3288 transitions. [2022-03-18 05:50:15,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-18 05:50:15,712 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 [2022-03-18 05:50:15,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:50:15,745 INFO L225 Difference]: With dead ends: 2248 [2022-03-18 05:50:15,745 INFO L226 Difference]: Without dead ends: 1600 [2022-03-18 05:50:15,747 INFO L911 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 [2022-03-18 05:50:15,747 INFO L912 BasicCegarLoop]: 882 mSDtfsCounter, 1640 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 2041 mSolverCounterSat, 803 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.2s 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, 38.4s IncrementalHoareTripleChecker+Time [2022-03-18 05:50:15,747 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1699 Valid, 1841 Invalid, 2856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [803 Valid, 2041 Invalid, 12 Unknown, 0 Unchecked, 38.4s Time] [2022-03-18 05:50:15,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1600 states. [2022-03-18 05:50:15,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1600 to 1251. [2022-03-18 05:50:15,983 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) [2022-03-18 05:50:15,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1251 states to 1251 states and 1783 transitions. [2022-03-18 05:50:15,986 INFO L78 Accepts]: Start accepts. Automaton has 1251 states and 1783 transitions. Word has length 60 [2022-03-18 05:50:15,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:50:15,987 INFO L478 AbstractCegarLoop]: Abstraction has 1251 states and 1783 transitions. [2022-03-18 05:50:15,987 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) [2022-03-18 05:50:15,987 INFO L276 IsEmpty]: Start isEmpty. Operand 1251 states and 1783 transitions. [2022-03-18 05:50:15,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-03-18 05:50:15,989 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:50:15,989 INFO L500 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] [2022-03-18 05:50:15,989 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-03-18 05:50:15,989 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:50:15,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:50:15,989 INFO L85 PathProgramCache]: Analyzing trace with hash 339212706, now seen corresponding path program 1 times [2022-03-18 05:50:15,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:50:15,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1244011836] [2022-03-18 05:50:15,990 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:50:15,990 INFO L85 PathProgramCache]: Analyzing trace with hash 339212706, now seen corresponding path program 2 times [2022-03-18 05:50:15,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:50:15,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330918748] [2022-03-18 05:50:15,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:50:15,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:50:16,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:16,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:50:16,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:16,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:50:16,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:16,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:50:16,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:16,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-18 05:50:16,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:16,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:50:16,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:16,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:50:16,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:50:16,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330918748] [2022-03-18 05:50:16,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330918748] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:50:16,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:50:16,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-18 05:50:16,186 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:50:16,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1244011836] [2022-03-18 05:50:16,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1244011836] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:50:16,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:50:16,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-18 05:50:16,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848442991] [2022-03-18 05:50:16,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:50:16,187 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-18 05:50:16,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:50:16,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-18 05:50:16,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-03-18 05:50:16,187 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) [2022-03-18 05:50:23,541 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:50:25,587 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:50:27,393 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:50:28,884 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:50:30,727 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:50:33,061 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:50:35,099 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:50:37,138 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:50:38,882 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:50:41,184 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:50:43,206 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:50:46,316 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:50:49,250 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:50:51,786 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:50:54,117 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:50:56,497 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:50:59,694 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:51:02,044 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:51:03,991 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 [] [2022-03-18 05:51:04,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:51:04,506 INFO L93 Difference]: Finished difference Result 2771 states and 4052 transitions. [2022-03-18 05:51:04,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 05:51:04,506 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 [2022-03-18 05:51:04,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:51:04,512 INFO L225 Difference]: With dead ends: 2771 [2022-03-18 05:51:04,512 INFO L226 Difference]: Without dead ends: 1528 [2022-03-18 05:51:04,528 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-03-18 05:51:04,528 INFO L912 BasicCegarLoop]: 833 mSDtfsCounter, 715 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 2933 mSolverCounterSat, 440 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 742 SdHoareTripleChecker+Valid, 1624 SdHoareTripleChecker+Invalid, 3385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 440 IncrementalHoareTripleChecker+Valid, 2933 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.7s IncrementalHoareTripleChecker+Time [2022-03-18 05:51:04,529 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [742 Valid, 1624 Invalid, 3385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [440 Valid, 2933 Invalid, 12 Unknown, 0 Unchecked, 47.7s Time] [2022-03-18 05:51:04,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1528 states. [2022-03-18 05:51:04,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1528 to 1254. [2022-03-18 05:51:04,768 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) [2022-03-18 05:51:04,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1254 states to 1254 states and 1786 transitions. [2022-03-18 05:51:04,770 INFO L78 Accepts]: Start accepts. Automaton has 1254 states and 1786 transitions. Word has length 56 [2022-03-18 05:51:04,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:51:04,770 INFO L478 AbstractCegarLoop]: Abstraction has 1254 states and 1786 transitions. [2022-03-18 05:51:04,770 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) [2022-03-18 05:51:04,770 INFO L276 IsEmpty]: Start isEmpty. Operand 1254 states and 1786 transitions. [2022-03-18 05:51:04,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-18 05:51:04,772 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:51:04,772 INFO L500 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] [2022-03-18 05:51:04,772 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-03-18 05:51:04,772 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:51:04,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:51:04,772 INFO L85 PathProgramCache]: Analyzing trace with hash -308157176, now seen corresponding path program 1 times [2022-03-18 05:51:04,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:51:04,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1534808047] [2022-03-18 05:51:04,779 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:51:04,779 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:51:04,779 INFO L85 PathProgramCache]: Analyzing trace with hash -308157176, now seen corresponding path program 2 times [2022-03-18 05:51:04,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:51:04,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055936774] [2022-03-18 05:51:04,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:51:04,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:51:04,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:51:04,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:51:04,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:51:04,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:51:04,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:51:04,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-18 05:51:04,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:51:04,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-18 05:51:05,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:51:05,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:51:05,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:51:05,022 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-18 05:51:05,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:51:05,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055936774] [2022-03-18 05:51:05,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055936774] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:51:05,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289593269] [2022-03-18 05:51:05,024 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:51:05,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:51:05,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:51:05,039 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) [2022-03-18 05:51:05,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-18 05:51:05,624 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:51:05,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:51:05,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 912 conjuncts, 34 conjunts are in the unsatisfiable core [2022-03-18 05:51:05,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:51:06,120 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-18 05:51:06,121 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:51:06,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289593269] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:51:06,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:51:06,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [8] total 19 [2022-03-18 05:51:06,121 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:51:06,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1534808047] [2022-03-18 05:51:06,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1534808047] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:51:06,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:51:06,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-18 05:51:06,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332888277] [2022-03-18 05:51:06,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:51:06,122 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-18 05:51:06,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:51:06,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-18 05:51:06,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2022-03-18 05:51:06,125 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) [2022-03-18 05:51:11,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:51:11,757 INFO L93 Difference]: Finished difference Result 1328 states and 1867 transitions. [2022-03-18 05:51:11,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-18 05:51:11,758 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 [2022-03-18 05:51:11,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:51:11,769 INFO L225 Difference]: With dead ends: 1328 [2022-03-18 05:51:11,769 INFO L226 Difference]: Without dead ends: 1305 [2022-03-18 05:51:11,770 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=121, Invalid=635, Unknown=0, NotChecked=0, Total=756 [2022-03-18 05:51:11,770 INFO L912 BasicCegarLoop]: 833 mSDtfsCounter, 1308 mSDsluCounter, 3384 mSDsCounter, 0 mSdLazyCounter, 2105 mSolverCounterSat, 362 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s 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, 5.1s IncrementalHoareTripleChecker+Time [2022-03-18 05:51:11,771 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1346 Valid, 4217 Invalid, 2467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [362 Valid, 2105 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-03-18 05:51:11,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1305 states. [2022-03-18 05:51:12,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1305 to 1253. [2022-03-18 05:51:12,049 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) [2022-03-18 05:51:12,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1253 states to 1253 states and 1784 transitions. [2022-03-18 05:51:12,051 INFO L78 Accepts]: Start accepts. Automaton has 1253 states and 1784 transitions. Word has length 62 [2022-03-18 05:51:12,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:51:12,052 INFO L478 AbstractCegarLoop]: Abstraction has 1253 states and 1784 transitions. [2022-03-18 05:51:12,052 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) [2022-03-18 05:51:12,052 INFO L276 IsEmpty]: Start isEmpty. Operand 1253 states and 1784 transitions. [2022-03-18 05:51:12,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-03-18 05:51:12,053 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:51:12,053 INFO L500 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] [2022-03-18 05:51:12,075 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-03-18 05:51:12,267 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 [2022-03-18 05:51:12,267 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:51:12,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:51:12,268 INFO L85 PathProgramCache]: Analyzing trace with hash 497026437, now seen corresponding path program 1 times [2022-03-18 05:51:12,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:51:12,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [308068380] [2022-03-18 05:51:12,269 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:51:12,269 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:51:12,269 INFO L85 PathProgramCache]: Analyzing trace with hash 497026437, now seen corresponding path program 2 times [2022-03-18 05:51:12,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:51:12,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312693361] [2022-03-18 05:51:12,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:51:12,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:51:12,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:51:12,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:51:12,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:51:12,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:51:12,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:51:12,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-18 05:51:12,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:51:12,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-18 05:51:12,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:51:12,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:51:12,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:51:12,574 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-18 05:51:12,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:51:12,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312693361] [2022-03-18 05:51:12,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312693361] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:51:12,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788963850] [2022-03-18 05:51:12,574 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:51:12,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:51:12,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:51:12,576 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) [2022-03-18 05:51:12,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-18 05:51:13,081 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:51:13,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:51:13,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 913 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-18 05:51:13,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:51:13,304 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-18 05:51:13,304 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:51:13,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788963850] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:51:13,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:51:13,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 15 [2022-03-18 05:51:13,305 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:51:13,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [308068380] [2022-03-18 05:51:13,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [308068380] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:51:13,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:51:13,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 05:51:13,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219675279] [2022-03-18 05:51:13,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:51:13,305 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-18 05:51:13,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:51:13,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-18 05:51:13,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-03-18 05:51:13,306 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) [2022-03-18 05:51:13,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:51:13,688 INFO L93 Difference]: Finished difference Result 1275 states and 1806 transitions. [2022-03-18 05:51:13,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-18 05:51:13,693 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 [2022-03-18 05:51:13,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:51:13,707 INFO L225 Difference]: With dead ends: 1275 [2022-03-18 05:51:13,707 INFO L226 Difference]: Without dead ends: 1252 [2022-03-18 05:51:13,708 INFO L911 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 [2022-03-18 05:51:13,711 INFO L912 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 [2022-03-18 05:51:13,711 INFO L913 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] [2022-03-18 05:51:13,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2022-03-18 05:51:13,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 1252. [2022-03-18 05:51:14,000 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) [2022-03-18 05:51:14,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 1782 transitions. [2022-03-18 05:51:14,003 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 1782 transitions. Word has length 63 [2022-03-18 05:51:14,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:51:14,003 INFO L478 AbstractCegarLoop]: Abstraction has 1252 states and 1782 transitions. [2022-03-18 05:51:14,003 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) [2022-03-18 05:51:14,003 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 1782 transitions. [2022-03-18 05:51:14,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-03-18 05:51:14,004 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:51:14,004 INFO L500 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] [2022-03-18 05:51:14,025 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-03-18 05:51:14,219 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 [2022-03-18 05:51:14,220 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:51:14,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:51:14,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1089557179, now seen corresponding path program 1 times [2022-03-18 05:51:14,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:51:14,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1677840024] [2022-03-18 05:51:14,221 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:51:14,221 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:51:14,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1089557179, now seen corresponding path program 2 times [2022-03-18 05:51:14,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:51:14,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42820054] [2022-03-18 05:51:14,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:51:14,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:51:14,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:51:14,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:51:14,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:51:14,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:51:14,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:51:14,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-18 05:51:14,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:51:14,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-18 05:51:14,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:51:14,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:51:14,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:51:14,461 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-18 05:51:14,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:51:14,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42820054] [2022-03-18 05:51:14,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42820054] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:51:14,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10112356] [2022-03-18 05:51:14,462 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:51:14,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:51:14,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:51:14,463 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) [2022-03-18 05:51:14,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-18 05:51:14,973 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:51:14,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:51:14,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 912 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-18 05:51:14,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:51:15,195 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-18 05:51:15,195 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:51:15,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10112356] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:51:15,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:51:15,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 15 [2022-03-18 05:51:15,196 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:51:15,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1677840024] [2022-03-18 05:51:15,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1677840024] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:51:15,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:51:15,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 05:51:15,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208646383] [2022-03-18 05:51:15,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:51:15,196 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-18 05:51:15,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:51:15,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-18 05:51:15,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-03-18 05:51:15,197 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) [2022-03-18 05:51:15,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:51:15,572 INFO L93 Difference]: Finished difference Result 1264 states and 1794 transitions. [2022-03-18 05:51:15,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-18 05:51:15,572 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 [2022-03-18 05:51:15,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:51:15,578 INFO L225 Difference]: With dead ends: 1264 [2022-03-18 05:51:15,578 INFO L226 Difference]: Without dead ends: 1231 [2022-03-18 05:51:15,578 INFO L911 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 [2022-03-18 05:51:15,579 INFO L912 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 [2022-03-18 05:51:15,579 INFO L913 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] [2022-03-18 05:51:15,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2022-03-18 05:51:15,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 1231. [2022-03-18 05:51:15,842 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) [2022-03-18 05:51:15,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 1760 transitions. [2022-03-18 05:51:15,845 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 1760 transitions. Word has length 63 [2022-03-18 05:51:15,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:51:15,845 INFO L478 AbstractCegarLoop]: Abstraction has 1231 states and 1760 transitions. [2022-03-18 05:51:15,845 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) [2022-03-18 05:51:15,845 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 1760 transitions. [2022-03-18 05:51:15,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-18 05:51:15,846 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:51:15,847 INFO L500 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] [2022-03-18 05:51:15,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-18 05:51:16,066 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 [2022-03-18 05:51:16,067 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:51:16,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:51:16,067 INFO L85 PathProgramCache]: Analyzing trace with hash -388507538, now seen corresponding path program 1 times [2022-03-18 05:51:16,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:51:16,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [699084232] [2022-03-18 05:51:16,068 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:51:16,068 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:51:16,068 INFO L85 PathProgramCache]: Analyzing trace with hash -388507538, now seen corresponding path program 2 times [2022-03-18 05:51:16,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:51:16,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566624052] [2022-03-18 05:51:16,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:51:16,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:51:16,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:51:16,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:51:16,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:51:16,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:51:16,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:51:16,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-18 05:51:16,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:51:16,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-03-18 05:51:16,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:51:16,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-03-18 05:51:16,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:51:16,294 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-18 05:51:16,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:51:16,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566624052] [2022-03-18 05:51:16,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566624052] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:51:16,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:51:16,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 05:51:16,294 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:51:16,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [699084232] [2022-03-18 05:51:16,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [699084232] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:51:16,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:51:16,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 05:51:16,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251361652] [2022-03-18 05:51:16,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:51:16,295 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-18 05:51:16,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:51:16,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-18 05:51:16,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-03-18 05:51:16,296 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) [2022-03-18 05:51:23,287 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 [] [2022-03-18 05:51:25,947 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:51:28,920 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:51:30,965 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:51:33,040 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:51:36,183 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:51:38,447 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:51:40,415 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:51:42,661 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:51:44,332 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:51:46,580 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:51:48,573 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 [] [2022-03-18 05:51:48,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:51:48,842 INFO L93 Difference]: Finished difference Result 1599 states and 2367 transitions. [2022-03-18 05:51:48,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-18 05:51:48,843 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 [2022-03-18 05:51:48,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:51:48,848 INFO L225 Difference]: With dead ends: 1599 [2022-03-18 05:51:48,848 INFO L226 Difference]: Without dead ends: 1519 [2022-03-18 05:51:48,848 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2022-03-18 05:51:48,849 INFO L912 BasicCegarLoop]: 759 mSDtfsCounter, 1621 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 1677 mSolverCounterSat, 750 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1646 SdHoareTripleChecker+Valid, 1588 SdHoareTripleChecker+Invalid, 2435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 750 IncrementalHoareTripleChecker+Valid, 1677 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.8s IncrementalHoareTripleChecker+Time [2022-03-18 05:51:48,849 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1646 Valid, 1588 Invalid, 2435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [750 Valid, 1677 Invalid, 8 Unknown, 0 Unchecked, 31.8s Time] [2022-03-18 05:51:48,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1519 states. [2022-03-18 05:51:49,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1519 to 1220. [2022-03-18 05:51:49,277 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) [2022-03-18 05:51:49,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 1747 transitions. [2022-03-18 05:51:49,280 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 1747 transitions. Word has length 67 [2022-03-18 05:51:49,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:51:49,280 INFO L478 AbstractCegarLoop]: Abstraction has 1220 states and 1747 transitions. [2022-03-18 05:51:49,280 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) [2022-03-18 05:51:49,280 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 1747 transitions. [2022-03-18 05:51:49,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-18 05:51:49,282 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:51:49,282 INFO L500 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] [2022-03-18 05:51:49,283 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-03-18 05:51:49,283 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:51:49,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:51:49,283 INFO L85 PathProgramCache]: Analyzing trace with hash 629303588, now seen corresponding path program 1 times [2022-03-18 05:51:49,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:51:49,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [933525826] [2022-03-18 05:51:49,284 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:51:49,284 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:51:49,284 INFO L85 PathProgramCache]: Analyzing trace with hash 629303588, now seen corresponding path program 2 times [2022-03-18 05:51:49,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:51:49,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821283603] [2022-03-18 05:51:49,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:51:49,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:51:49,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:51:49,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:51:49,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:51:49,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:51:49,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:51:49,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-18 05:51:49,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:51:49,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-18 05:51:49,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:51:49,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 05:51:49,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:51:49,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:51:49,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:51:49,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 05:51:49,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:51:49,693 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-18 05:51:49,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:51:49,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821283603] [2022-03-18 05:51:49,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821283603] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:51:49,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:51:49,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 05:51:49,694 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:51:49,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [933525826] [2022-03-18 05:51:49,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [933525826] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:51:49,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:51:49,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 05:51:49,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715434126] [2022-03-18 05:51:49,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:51:49,695 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-18 05:51:49,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:51:49,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-18 05:51:49,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-03-18 05:51:49,695 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) [2022-03-18 05:51:58,528 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 [] [2022-03-18 05:52:02,767 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:52:04,789 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:52:06,828 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:52:09,633 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:52:11,665 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:52:14,569 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:52:16,842 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:52:18,880 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:52:20,311 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:52:24,274 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:52:28,103 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:52:30,417 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:52:34,382 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:52:36,048 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:52:39,227 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.68s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:52:42,316 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:52:42,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:52:42,611 INFO L93 Difference]: Finished difference Result 1571 states and 2344 transitions. [2022-03-18 05:52:42,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-18 05:52:42,611 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 [2022-03-18 05:52:42,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:52:42,616 INFO L225 Difference]: With dead ends: 1571 [2022-03-18 05:52:42,616 INFO L226 Difference]: Without dead ends: 1539 [2022-03-18 05:52:42,617 INFO L911 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 [2022-03-18 05:52:42,617 INFO L912 BasicCegarLoop]: 811 mSDtfsCounter, 1176 mSDsluCounter, 1155 mSDsCounter, 0 mSdLazyCounter, 3559 mSolverCounterSat, 653 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1207 SdHoareTripleChecker+Valid, 1966 SdHoareTripleChecker+Invalid, 4224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 653 IncrementalHoareTripleChecker+Valid, 3559 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52.0s IncrementalHoareTripleChecker+Time [2022-03-18 05:52:42,617 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1207 Valid, 1966 Invalid, 4224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [653 Valid, 3559 Invalid, 12 Unknown, 0 Unchecked, 52.0s Time] [2022-03-18 05:52:42,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1539 states. [2022-03-18 05:52:42,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1539 to 1221. [2022-03-18 05:52:42,929 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) [2022-03-18 05:52:42,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1221 states to 1221 states and 1748 transitions. [2022-03-18 05:52:42,931 INFO L78 Accepts]: Start accepts. Automaton has 1221 states and 1748 transitions. Word has length 70 [2022-03-18 05:52:42,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:52:42,932 INFO L478 AbstractCegarLoop]: Abstraction has 1221 states and 1748 transitions. [2022-03-18 05:52:42,932 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) [2022-03-18 05:52:42,932 INFO L276 IsEmpty]: Start isEmpty. Operand 1221 states and 1748 transitions. [2022-03-18 05:52:42,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-18 05:52:42,954 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:52:42,954 INFO L500 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] [2022-03-18 05:52:42,954 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-03-18 05:52:42,954 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:52:42,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:52:42,955 INFO L85 PathProgramCache]: Analyzing trace with hash 769852198, now seen corresponding path program 1 times [2022-03-18 05:52:42,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:52:42,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [423028544] [2022-03-18 05:52:42,956 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:52:42,956 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:52:42,956 INFO L85 PathProgramCache]: Analyzing trace with hash 769852198, now seen corresponding path program 2 times [2022-03-18 05:52:42,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:52:42,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054786573] [2022-03-18 05:52:42,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:52:42,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:52:42,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:43,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:52:43,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:43,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:52:43,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:43,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-18 05:52:43,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:43,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-18 05:52:43,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:43,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 05:52:43,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:43,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:52:43,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:43,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 05:52:43,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:43,283 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-18 05:52:43,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:52:43,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054786573] [2022-03-18 05:52:43,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054786573] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:52:43,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:52:43,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 05:52:43,284 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:52:43,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [423028544] [2022-03-18 05:52:43,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [423028544] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:52:43,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:52:43,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 05:52:43,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305507772] [2022-03-18 05:52:43,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:52:43,285 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-18 05:52:43,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:52:43,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-18 05:52:43,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-03-18 05:52:43,286 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) [2022-03-18 05:52:51,078 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:52:53,898 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:52:55,930 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:52:57,984 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:53:00,022 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:53:02,839 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:53:05,796 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:53:10,943 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:53:12,059 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:53:14,081 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:53:16,109 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:53:17,783 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:53:19,956 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:53:21,986 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:53:24,013 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 [] [2022-03-18 05:53:25,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:53:25,213 INFO L93 Difference]: Finished difference Result 1555 states and 2323 transitions. [2022-03-18 05:53:25,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-18 05:53:25,214 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), 1 states have call successors, (7) Word has length 70 [2022-03-18 05:53:25,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:53:25,220 INFO L225 Difference]: With dead ends: 1555 [2022-03-18 05:53:25,221 INFO L226 Difference]: Without dead ends: 1548 [2022-03-18 05:53:25,222 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-03-18 05:53:25,222 INFO L912 BasicCegarLoop]: 797 mSDtfsCounter, 1765 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 2607 mSolverCounterSat, 1107 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1795 SdHoareTripleChecker+Valid, 1657 SdHoareTripleChecker+Invalid, 3725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1107 IncrementalHoareTripleChecker+Valid, 2607 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.1s IncrementalHoareTripleChecker+Time [2022-03-18 05:53:25,222 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1795 Valid, 1657 Invalid, 3725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1107 Valid, 2607 Invalid, 11 Unknown, 0 Unchecked, 41.1s Time] [2022-03-18 05:53:25,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1548 states. [2022-03-18 05:53:25,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1548 to 1235. [2022-03-18 05:53:25,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1235 states, 957 states have (on average 1.3887147335423198) internal successors, (1329), 963 states have internal predecessors, (1329), 185 states have call successors, (185), 79 states have call predecessors, (185), 92 states have return successors, (250), 192 states have call predecessors, (250), 178 states have call successors, (250) [2022-03-18 05:53:25,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1235 states to 1235 states and 1764 transitions. [2022-03-18 05:53:25,703 INFO L78 Accepts]: Start accepts. Automaton has 1235 states and 1764 transitions. Word has length 70 [2022-03-18 05:53:25,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:53:25,704 INFO L478 AbstractCegarLoop]: Abstraction has 1235 states and 1764 transitions. [2022-03-18 05:53:25,704 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), 1 states have call successors, (7) [2022-03-18 05:53:25,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 1764 transitions. [2022-03-18 05:53:25,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-18 05:53:25,707 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:53:25,707 INFO L500 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] [2022-03-18 05:53:25,707 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-03-18 05:53:25,707 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:53:25,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:53:25,707 INFO L85 PathProgramCache]: Analyzing trace with hash 850412718, now seen corresponding path program 1 times [2022-03-18 05:53:25,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:53:25,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1030508212] [2022-03-18 05:53:25,708 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:53:25,708 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:53:25,708 INFO L85 PathProgramCache]: Analyzing trace with hash 850412718, now seen corresponding path program 2 times [2022-03-18 05:53:25,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:53:25,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848468608] [2022-03-18 05:53:25,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:53:25,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:53:25,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:25,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:53:25,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:25,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:53:25,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:25,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-18 05:53:25,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:25,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-18 05:53:25,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:25,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:53:25,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:26,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:53:26,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:26,008 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-18 05:53:26,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:53:26,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848468608] [2022-03-18 05:53:26,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848468608] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:53:26,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874093193] [2022-03-18 05:53:26,009 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:53:26,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:53:26,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:53:26,010 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 05:53:26,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-18 05:53:26,596 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:53:26,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:53:26,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 1008 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-18 05:53:26,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:53:26,866 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-18 05:53:26,866 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:53:26,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874093193] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:53:26,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:53:26,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [9] total 18 [2022-03-18 05:53:26,867 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:53:26,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1030508212] [2022-03-18 05:53:26,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1030508212] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:53:26,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:53:26,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 05:53:26,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277961689] [2022-03-18 05:53:26,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:53:26,867 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-18 05:53:26,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:53:26,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-18 05:53:26,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2022-03-18 05:53:26,868 INFO L87 Difference]: Start difference. First operand 1235 states and 1764 transitions. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 05:53:27,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:53:27,406 INFO L93 Difference]: Finished difference Result 1841 states and 2619 transitions. [2022-03-18 05:53:27,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 05:53:27,409 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) Word has length 69 [2022-03-18 05:53:27,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:53:27,413 INFO L225 Difference]: With dead ends: 1841 [2022-03-18 05:53:27,413 INFO L226 Difference]: Without dead ends: 1267 [2022-03-18 05:53:27,415 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2022-03-18 05:53:27,417 INFO L912 BasicCegarLoop]: 915 mSDtfsCounter, 10 mSDsluCounter, 7190 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 8105 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 05:53:27,417 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 8105 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 05:53:27,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1267 states. [2022-03-18 05:53:27,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1267 to 1250. [2022-03-18 05:53:27,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 970 states have (on average 1.3876288659793814) internal successors, (1346), 977 states have internal predecessors, (1346), 185 states have call successors, (185), 79 states have call predecessors, (185), 94 states have return successors, (258), 193 states have call predecessors, (258), 178 states have call successors, (258) [2022-03-18 05:53:27,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1789 transitions. [2022-03-18 05:53:27,747 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1789 transitions. Word has length 69 [2022-03-18 05:53:27,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:53:27,748 INFO L478 AbstractCegarLoop]: Abstraction has 1250 states and 1789 transitions. [2022-03-18 05:53:27,748 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 05:53:27,748 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1789 transitions. [2022-03-18 05:53:27,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-18 05:53:27,749 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:53:27,749 INFO L500 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, 1] [2022-03-18 05:53:27,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-18 05:53:27,963 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:53:27,963 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:53:27,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:53:27,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1111213548, now seen corresponding path program 1 times [2022-03-18 05:53:27,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:53:27,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1397182062] [2022-03-18 05:53:27,965 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:53:27,965 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:53:27,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1111213548, now seen corresponding path program 2 times [2022-03-18 05:53:27,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:53:27,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140556276] [2022-03-18 05:53:27,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:53:27,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:53:27,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:28,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:53:28,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:28,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:53:28,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:28,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-18 05:53:28,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:28,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-18 05:53:28,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:28,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-18 05:53:28,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:28,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:53:28,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:28,228 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-18 05:53:28,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:53:28,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140556276] [2022-03-18 05:53:28,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140556276] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:53:28,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113556245] [2022-03-18 05:53:28,229 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:53:28,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:53:28,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:53:28,230 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 05:53:28,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-18 05:53:28,840 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:53:28,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:53:28,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 1012 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-18 05:53:28,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:53:29,115 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-18 05:53:29,115 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:53:29,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113556245] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:53:29,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:53:29,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [9] total 18 [2022-03-18 05:53:29,115 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:53:29,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1397182062] [2022-03-18 05:53:29,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1397182062] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:53:29,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:53:29,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 05:53:29,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164978816] [2022-03-18 05:53:29,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:53:29,116 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-18 05:53:29,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:53:29,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-18 05:53:29,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2022-03-18 05:53:29,117 INFO L87 Difference]: Start difference. First operand 1250 states and 1789 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 8 states have internal predecessors, (57), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 05:53:29,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:53:29,604 INFO L93 Difference]: Finished difference Result 1283 states and 1824 transitions. [2022-03-18 05:53:29,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 05:53:29,605 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 8 states have internal predecessors, (57), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) Word has length 71 [2022-03-18 05:53:29,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:53:29,608 INFO L225 Difference]: With dead ends: 1283 [2022-03-18 05:53:29,609 INFO L226 Difference]: Without dead ends: 1267 [2022-03-18 05:53:29,609 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2022-03-18 05:53:29,610 INFO L912 BasicCegarLoop]: 920 mSDtfsCounter, 10 mSDsluCounter, 7224 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 8144 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 05:53:29,610 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 8144 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 05:53:29,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1267 states. [2022-03-18 05:53:29,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1267 to 1250. [2022-03-18 05:53:29,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 970 states have (on average 1.3876288659793814) internal successors, (1346), 977 states have internal predecessors, (1346), 185 states have call successors, (185), 79 states have call predecessors, (185), 94 states have return successors, (257), 193 states have call predecessors, (257), 178 states have call successors, (257) [2022-03-18 05:53:29,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1788 transitions. [2022-03-18 05:53:29,925 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1788 transitions. Word has length 71 [2022-03-18 05:53:29,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:53:29,926 INFO L478 AbstractCegarLoop]: Abstraction has 1250 states and 1788 transitions. [2022-03-18 05:53:29,926 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 8 states have internal predecessors, (57), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 05:53:29,926 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1788 transitions. [2022-03-18 05:53:29,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-18 05:53:29,927 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:53:29,927 INFO L500 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, 1] [2022-03-18 05:53:29,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-18 05:53:30,148 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-03-18 05:53:30,148 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:53:30,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:53:30,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1896674077, now seen corresponding path program 1 times [2022-03-18 05:53:30,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:53:30,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2119547784] [2022-03-18 05:53:30,149 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:53:30,149 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:53:30,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1896674077, now seen corresponding path program 2 times [2022-03-18 05:53:30,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:53:30,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039044595] [2022-03-18 05:53:30,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:53:30,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:53:30,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:30,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:53:30,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:30,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:53:30,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:30,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-18 05:53:30,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:30,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-18 05:53:30,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:30,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 05:53:30,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:30,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:53:30,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:30,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 05:53:30,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:30,479 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-18 05:53:30,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:53:30,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039044595] [2022-03-18 05:53:30,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039044595] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:53:30,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:53:30,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 05:53:30,480 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:53:30,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2119547784] [2022-03-18 05:53:30,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2119547784] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:53:30,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:53:30,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 05:53:30,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035046799] [2022-03-18 05:53:30,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:53:30,482 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 05:53:30,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:53:30,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 05:53:30,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-03-18 05:53:30,482 INFO L87 Difference]: Start difference. First operand 1250 states and 1788 transitions. Second operand has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 05:53:34,287 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 [] [2022-03-18 05:53:40,058 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:53:41,695 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:53:43,732 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:53:48,996 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:53:53,767 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:53:55,810 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:53:57,891 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:53:59,934 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:54:03,294 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:54:06,226 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:54:09,813 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:54:11,851 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:54:13,193 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:54:14,206 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:54:16,541 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:54:19,844 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:54:21,878 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 [] [2022-03-18 05:54:22,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:54:22,365 INFO L93 Difference]: Finished difference Result 1573 states and 2352 transitions. [2022-03-18 05:54:22,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-18 05:54:22,365 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 71 [2022-03-18 05:54:22,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:54:22,369 INFO L225 Difference]: With dead ends: 1573 [2022-03-18 05:54:22,369 INFO L226 Difference]: Without dead ends: 1568 [2022-03-18 05:54:22,370 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=213, Invalid=657, Unknown=0, NotChecked=0, Total=870 [2022-03-18 05:54:22,371 INFO L912 BasicCegarLoop]: 728 mSDtfsCounter, 2439 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 3158 mSolverCounterSat, 1286 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2498 SdHoareTripleChecker+Valid, 1983 SdHoareTripleChecker+Invalid, 4457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1286 IncrementalHoareTripleChecker+Valid, 3158 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.7s IncrementalHoareTripleChecker+Time [2022-03-18 05:54:22,371 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2498 Valid, 1983 Invalid, 4457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1286 Valid, 3158 Invalid, 13 Unknown, 0 Unchecked, 50.7s Time] [2022-03-18 05:54:22,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2022-03-18 05:54:22,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1250. [2022-03-18 05:54:22,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 970 states have (on average 1.3865979381443299) internal successors, (1345), 977 states have internal predecessors, (1345), 185 states have call successors, (185), 79 states have call predecessors, (185), 94 states have return successors, (257), 193 states have call predecessors, (257), 178 states have call successors, (257) [2022-03-18 05:54:22,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1787 transitions. [2022-03-18 05:54:22,786 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1787 transitions. Word has length 71 [2022-03-18 05:54:22,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:54:22,788 INFO L478 AbstractCegarLoop]: Abstraction has 1250 states and 1787 transitions. [2022-03-18 05:54:22,788 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 05:54:22,788 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1787 transitions. [2022-03-18 05:54:22,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-18 05:54:22,790 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:54:22,790 INFO L500 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, 1, 1] [2022-03-18 05:54:22,790 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-03-18 05:54:22,790 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:54:22,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:54:22,790 INFO L85 PathProgramCache]: Analyzing trace with hash -346741201, now seen corresponding path program 1 times [2022-03-18 05:54:22,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:54:22,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [29582635] [2022-03-18 05:54:22,791 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:54:22,791 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:54:22,791 INFO L85 PathProgramCache]: Analyzing trace with hash -346741201, now seen corresponding path program 2 times [2022-03-18 05:54:22,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:54:22,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067079056] [2022-03-18 05:54:22,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:54:22,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:54:22,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:22,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:54:22,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:22,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:54:22,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:22,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-18 05:54:22,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:22,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-18 05:54:23,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:23,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:54:23,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:23,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:54:23,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:23,051 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-18 05:54:23,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:54:23,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067079056] [2022-03-18 05:54:23,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067079056] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:54:23,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452410918] [2022-03-18 05:54:23,052 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:54:23,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:54:23,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:54:23,067 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 05:54:23,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-18 05:54:23,623 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:54:23,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:54:23,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 1023 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-18 05:54:23,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:54:23,911 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-18 05:54:23,911 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:54:23,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452410918] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:54:23,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:54:23,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [9] total 19 [2022-03-18 05:54:23,912 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:54:23,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [29582635] [2022-03-18 05:54:23,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [29582635] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:54:23,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:54:23,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 05:54:23,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639719739] [2022-03-18 05:54:23,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:54:23,912 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 05:54:23,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:54:23,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 05:54:23,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2022-03-18 05:54:23,913 INFO L87 Difference]: Start difference. First operand 1250 states and 1787 transitions. Second operand has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 9 states have internal predecessors, (58), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 05:54:24,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:54:24,414 INFO L93 Difference]: Finished difference Result 1284 states and 1823 transitions. [2022-03-18 05:54:24,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-18 05:54:24,415 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 9 states have internal predecessors, (58), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) Word has length 72 [2022-03-18 05:54:24,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:54:24,436 INFO L225 Difference]: With dead ends: 1284 [2022-03-18 05:54:24,436 INFO L226 Difference]: Without dead ends: 1267 [2022-03-18 05:54:24,437 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2022-03-18 05:54:24,438 INFO L912 BasicCegarLoop]: 922 mSDtfsCounter, 12 mSDsluCounter, 8148 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 9070 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 05:54:24,438 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 9070 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 05:54:24,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1267 states. [2022-03-18 05:54:24,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1267 to 1250. [2022-03-18 05:54:24,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 970 states have (on average 1.3865979381443299) internal successors, (1345), 977 states have internal predecessors, (1345), 185 states have call successors, (185), 79 states have call predecessors, (185), 94 states have return successors, (256), 193 states have call predecessors, (256), 178 states have call successors, (256) [2022-03-18 05:54:24,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1786 transitions. [2022-03-18 05:54:24,837 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1786 transitions. Word has length 72 [2022-03-18 05:54:24,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:54:24,838 INFO L478 AbstractCegarLoop]: Abstraction has 1250 states and 1786 transitions. [2022-03-18 05:54:24,838 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 9 states have internal predecessors, (58), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 05:54:24,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1786 transitions. [2022-03-18 05:54:24,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-18 05:54:24,840 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:54:24,840 INFO L500 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] [2022-03-18 05:54:24,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-18 05:54:25,062 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:54:25,063 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:54:25,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:54:25,063 INFO L85 PathProgramCache]: Analyzing trace with hash 101300578, now seen corresponding path program 1 times [2022-03-18 05:54:25,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:54:25,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [708750882] [2022-03-18 05:54:25,064 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:54:25,064 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:54:25,064 INFO L85 PathProgramCache]: Analyzing trace with hash 101300578, now seen corresponding path program 2 times [2022-03-18 05:54:25,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:54:25,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369777846] [2022-03-18 05:54:25,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:54:25,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:54:25,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:25,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:54:25,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:25,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:54:25,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:25,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-18 05:54:25,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:25,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-18 05:54:25,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:25,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:54:25,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:25,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:54:25,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:25,327 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-18 05:54:25,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:54:25,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369777846] [2022-03-18 05:54:25,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369777846] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:54:25,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452122873] [2022-03-18 05:54:25,327 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:54:25,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:54:25,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:54:25,329 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 05:54:25,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-18 05:54:25,870 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:54:25,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:54:25,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 1008 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-18 05:54:25,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:54:26,117 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-18 05:54:26,118 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:54:26,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452122873] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:54:26,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:54:26,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [9] total 18 [2022-03-18 05:54:26,118 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:54:26,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [708750882] [2022-03-18 05:54:26,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [708750882] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:54:26,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:54:26,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 05:54:26,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547509170] [2022-03-18 05:54:26,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:54:26,119 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-18 05:54:26,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:54:26,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-18 05:54:26,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2022-03-18 05:54:26,119 INFO L87 Difference]: Start difference. First operand 1250 states and 1786 transitions. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 05:54:26,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:54:26,621 INFO L93 Difference]: Finished difference Result 1588 states and 2250 transitions. [2022-03-18 05:54:26,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 05:54:26,621 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) Word has length 70 [2022-03-18 05:54:26,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:54:26,635 INFO L225 Difference]: With dead ends: 1588 [2022-03-18 05:54:26,635 INFO L226 Difference]: Without dead ends: 1279 [2022-03-18 05:54:26,636 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2022-03-18 05:54:26,637 INFO L912 BasicCegarLoop]: 924 mSDtfsCounter, 10 mSDsluCounter, 7234 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 8158 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 05:54:26,637 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 8158 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 05:54:26,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2022-03-18 05:54:26,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1265. [2022-03-18 05:54:26,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1265 states, 983 states have (on average 1.3855544252288912) internal successors, (1362), 991 states have internal predecessors, (1362), 185 states have call successors, (185), 79 states have call predecessors, (185), 96 states have return successors, (264), 194 states have call predecessors, (264), 178 states have call successors, (264) [2022-03-18 05:54:26,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1265 states to 1265 states and 1811 transitions. [2022-03-18 05:54:26,960 INFO L78 Accepts]: Start accepts. Automaton has 1265 states and 1811 transitions. Word has length 70 [2022-03-18 05:54:26,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:54:26,960 INFO L478 AbstractCegarLoop]: Abstraction has 1265 states and 1811 transitions. [2022-03-18 05:54:26,960 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 05:54:26,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1265 states and 1811 transitions. [2022-03-18 05:54:26,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-18 05:54:26,961 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:54:26,961 INFO L500 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, 1, 1] [2022-03-18 05:54:26,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-18 05:54:27,181 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:54:27,181 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:54:27,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:54:27,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1629803938, now seen corresponding path program 1 times [2022-03-18 05:54:27,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:54:27,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [847941851] [2022-03-18 05:54:27,182 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:54:27,182 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:54:27,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1629803938, now seen corresponding path program 2 times [2022-03-18 05:54:27,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:54:27,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748067336] [2022-03-18 05:54:27,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:54:27,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:54:27,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:27,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:54:27,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:27,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:54:27,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:27,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-18 05:54:27,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:27,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-18 05:54:27,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:27,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-18 05:54:27,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:27,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:54:27,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:27,472 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-18 05:54:27,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:54:27,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748067336] [2022-03-18 05:54:27,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748067336] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:54:27,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954863690] [2022-03-18 05:54:27,472 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:54:27,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:54:27,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:54:27,474 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 05:54:27,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-18 05:54:28,007 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:54:28,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:54:28,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 1012 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-18 05:54:28,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:54:28,304 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-18 05:54:28,304 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:54:28,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954863690] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:54:28,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:54:28,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [9] total 18 [2022-03-18 05:54:28,304 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:54:28,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [847941851] [2022-03-18 05:54:28,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [847941851] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:54:28,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:54:28,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 05:54:28,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078525606] [2022-03-18 05:54:28,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:54:28,305 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-18 05:54:28,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:54:28,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-18 05:54:28,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2022-03-18 05:54:28,305 INFO L87 Difference]: Start difference. First operand 1265 states and 1811 transitions. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 8 states have internal predecessors, (58), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 05:54:28,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:54:28,791 INFO L93 Difference]: Finished difference Result 1295 states and 1843 transitions. [2022-03-18 05:54:28,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 05:54:28,792 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 8 states have internal predecessors, (58), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) Word has length 72 [2022-03-18 05:54:28,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:54:28,800 INFO L225 Difference]: With dead ends: 1295 [2022-03-18 05:54:28,800 INFO L226 Difference]: Without dead ends: 1279 [2022-03-18 05:54:28,800 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2022-03-18 05:54:28,801 INFO L912 BasicCegarLoop]: 935 mSDtfsCounter, 10 mSDsluCounter, 7316 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 8251 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 05:54:28,801 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 8251 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 05:54:28,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2022-03-18 05:54:29,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1265. [2022-03-18 05:54:29,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1265 states, 983 states have (on average 1.3855544252288912) internal successors, (1362), 991 states have internal predecessors, (1362), 185 states have call successors, (185), 79 states have call predecessors, (185), 96 states have return successors, (263), 194 states have call predecessors, (263), 178 states have call successors, (263) [2022-03-18 05:54:29,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1265 states to 1265 states and 1810 transitions. [2022-03-18 05:54:29,128 INFO L78 Accepts]: Start accepts. Automaton has 1265 states and 1810 transitions. Word has length 72 [2022-03-18 05:54:29,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:54:29,128 INFO L478 AbstractCegarLoop]: Abstraction has 1265 states and 1810 transitions. [2022-03-18 05:54:29,128 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 8 states have internal predecessors, (58), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 05:54:29,128 INFO L276 IsEmpty]: Start isEmpty. Operand 1265 states and 1810 transitions. [2022-03-18 05:54:29,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-18 05:54:29,130 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:54:29,130 INFO L500 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] [2022-03-18 05:54:29,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-18 05:54:29,339 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-03-18 05:54:29,339 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:54:29,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:54:29,340 INFO L85 PathProgramCache]: Analyzing trace with hash -101287646, now seen corresponding path program 1 times [2022-03-18 05:54:29,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:54:29,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [998067956] [2022-03-18 05:54:29,341 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:54:29,341 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:54:29,341 INFO L85 PathProgramCache]: Analyzing trace with hash -101287646, now seen corresponding path program 2 times [2022-03-18 05:54:29,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:54:29,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682895449] [2022-03-18 05:54:29,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:54:29,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:54:29,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:29,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:54:29,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:29,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:54:29,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:29,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-18 05:54:29,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:29,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-18 05:54:29,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:29,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:54:29,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:29,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:54:29,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:29,580 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-18 05:54:29,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:54:29,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682895449] [2022-03-18 05:54:29,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682895449] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:54:29,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324333501] [2022-03-18 05:54:29,581 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:54:29,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:54:29,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:54:29,582 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 05:54:29,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-18 05:54:30,125 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:54:30,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:54:30,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 1009 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-18 05:54:30,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:54:30,360 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-18 05:54:30,361 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:54:30,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324333501] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:54:30,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:54:30,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [9] total 18 [2022-03-18 05:54:30,361 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:54:30,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [998067956] [2022-03-18 05:54:30,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [998067956] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:54:30,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:54:30,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 05:54:30,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919076249] [2022-03-18 05:54:30,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:54:30,362 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-18 05:54:30,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:54:30,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-18 05:54:30,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2022-03-18 05:54:30,362 INFO L87 Difference]: Start difference. First operand 1265 states and 1810 transitions. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 05:54:30,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:54:30,831 INFO L93 Difference]: Finished difference Result 1855 states and 2635 transitions. [2022-03-18 05:54:30,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 05:54:30,832 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) Word has length 70 [2022-03-18 05:54:30,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:54:30,835 INFO L225 Difference]: With dead ends: 1855 [2022-03-18 05:54:30,835 INFO L226 Difference]: Without dead ends: 1280 [2022-03-18 05:54:30,836 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2022-03-18 05:54:30,836 INFO L912 BasicCegarLoop]: 928 mSDtfsCounter, 6 mSDsluCounter, 8154 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 9082 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 05:54:30,836 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 9082 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 05:54:30,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1280 states. [2022-03-18 05:54:31,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1280 to 1257. [2022-03-18 05:54:31,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1257 states, 976 states have (on average 1.3811475409836065) internal successors, (1348), 984 states have internal predecessors, (1348), 184 states have call successors, (184), 79 states have call predecessors, (184), 96 states have return successors, (262), 193 states have call predecessors, (262), 177 states have call successors, (262) [2022-03-18 05:54:31,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1257 states to 1257 states and 1794 transitions. [2022-03-18 05:54:31,148 INFO L78 Accepts]: Start accepts. Automaton has 1257 states and 1794 transitions. Word has length 70 [2022-03-18 05:54:31,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:54:31,148 INFO L478 AbstractCegarLoop]: Abstraction has 1257 states and 1794 transitions. [2022-03-18 05:54:31,148 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 05:54:31,148 INFO L276 IsEmpty]: Start isEmpty. Operand 1257 states and 1794 transitions. [2022-03-18 05:54:31,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-18 05:54:31,150 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:54:31,150 INFO L500 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, 1, 1] [2022-03-18 05:54:31,179 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-03-18 05:54:31,369 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-03-18 05:54:31,370 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:54:31,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:54:31,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1056087752, now seen corresponding path program 1 times [2022-03-18 05:54:31,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:54:31,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1722315904] [2022-03-18 05:54:31,371 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:54:31,371 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:54:31,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1056087752, now seen corresponding path program 2 times [2022-03-18 05:54:31,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:54:31,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762523678] [2022-03-18 05:54:31,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:54:31,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:54:31,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:31,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:54:31,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:31,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:54:31,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:31,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-18 05:54:31,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:31,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-18 05:54:31,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:31,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 05:54:31,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:31,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:54:31,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:31,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 05:54:31,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:31,643 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-18 05:54:31,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:54:31,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762523678] [2022-03-18 05:54:31,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762523678] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:54:31,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817316939] [2022-03-18 05:54:31,644 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:54:31,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:54:31,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:54:31,646 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 05:54:31,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-18 05:54:32,321 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:54:32,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:54:32,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 1033 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-18 05:54:32,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:54:32,420 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-18 05:54:32,420 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:54:32,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817316939] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:54:32,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:54:32,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2022-03-18 05:54:32,421 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:54:32,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1722315904] [2022-03-18 05:54:32,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1722315904] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:54:32,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:54:32,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-18 05:54:32,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603292791] [2022-03-18 05:54:32,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:54:32,423 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-18 05:54:32,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:54:32,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-18 05:54:32,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-03-18 05:54:32,424 INFO L87 Difference]: Start difference. First operand 1257 states and 1794 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 05:54:32,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:54:32,814 INFO L93 Difference]: Finished difference Result 2159 states and 3145 transitions. [2022-03-18 05:54:32,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-18 05:54:32,815 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2022-03-18 05:54:32,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:54:32,818 INFO L225 Difference]: With dead ends: 2159 [2022-03-18 05:54:32,818 INFO L226 Difference]: Without dead ends: 1267 [2022-03-18 05:54:32,820 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-03-18 05:54:32,820 INFO L912 BasicCegarLoop]: 909 mSDtfsCounter, 2 mSDsluCounter, 1803 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2712 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 05:54:32,820 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 2712 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 05:54:32,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1267 states. [2022-03-18 05:54:33,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1267 to 1267. [2022-03-18 05:54:33,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1267 states, 984 states have (on average 1.3800813008130082) internal successors, (1358), 994 states have internal predecessors, (1358), 184 states have call successors, (184), 79 states have call predecessors, (184), 98 states have return successors, (264), 193 states have call predecessors, (264), 177 states have call successors, (264) [2022-03-18 05:54:33,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1267 states to 1267 states and 1806 transitions. [2022-03-18 05:54:33,146 INFO L78 Accepts]: Start accepts. Automaton has 1267 states and 1806 transitions. Word has length 72 [2022-03-18 05:54:33,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:54:33,146 INFO L478 AbstractCegarLoop]: Abstraction has 1267 states and 1806 transitions. [2022-03-18 05:54:33,146 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 05:54:33,146 INFO L276 IsEmpty]: Start isEmpty. Operand 1267 states and 1806 transitions. [2022-03-18 05:54:33,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-18 05:54:33,148 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:54:33,148 INFO L500 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, 1, 1, 1, 1] [2022-03-18 05:54:33,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-18 05:54:33,370 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-03-18 05:54:33,370 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:54:33,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:54:33,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1588731855, now seen corresponding path program 1 times [2022-03-18 05:54:33,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:54:33,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1700777016] [2022-03-18 05:54:33,371 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:54:33,371 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:54:33,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1588731855, now seen corresponding path program 2 times [2022-03-18 05:54:33,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:54:33,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813883417] [2022-03-18 05:54:33,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:54:33,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:54:33,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:33,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:54:33,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:33,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:54:33,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:33,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-18 05:54:33,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:33,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-03-18 05:54:33,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:33,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-03-18 05:54:33,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:33,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-03-18 05:54:33,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:33,561 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-18 05:54:33,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:54:33,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813883417] [2022-03-18 05:54:33,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813883417] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:54:33,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:54:33,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 05:54:33,561 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:54:33,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1700777016] [2022-03-18 05:54:33,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1700777016] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:54:33,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:54:33,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 05:54:33,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822677729] [2022-03-18 05:54:33,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:54:33,562 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-18 05:54:33,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:54:33,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-18 05:54:33,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-03-18 05:54:33,562 INFO L87 Difference]: Start difference. First operand 1267 states and 1806 transitions. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 05:54:41,663 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 [] [2022-03-18 05:54:43,696 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:54:45,725 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:54:47,261 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:54:49,604 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:54:52,793 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:54:54,780 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:54:56,823 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:54:59,894 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:55:03,587 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:55:04,653 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:55:06,678 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:55:08,797 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:55:10,825 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 []