/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-d966a43 [2022-01-31 23:43:48,653 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 23:43:48,654 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 23:43:48,730 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 23:43:48,730 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 23:43:48,732 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 23:43:48,733 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 23:43:48,734 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 23:43:48,736 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 23:43:48,736 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 23:43:48,737 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 23:43:48,738 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 23:43:48,738 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 23:43:48,743 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 23:43:48,747 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 23:43:48,750 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 23:43:48,752 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 23:43:48,758 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 23:43:48,763 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 23:43:48,765 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 23:43:48,766 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 23:43:48,770 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 23:43:48,771 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 23:43:48,772 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 23:43:48,774 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-31 23:43:48,774 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-31 23:43:48,774 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-31 23:43:48,775 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-31 23:43:48,775 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-31 23:43:48,776 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-01-31 23:43:48,787 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 23:43:48,788 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 23:43:48,789 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 23:43:48,792 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-01-31 23:43:48,808 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 23:43:48,809 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 23:43:48,811 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 23:43:48,811 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 23:43:48,811 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 23:43:48,811 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 23:43:48,811 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 23:43:48,811 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 23:43:48,811 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 23:43:48,812 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 23:43:48,812 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 23:43:48,813 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 23:43:48,813 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 23:43:48,813 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 23:43:48,813 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 23:43:48,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 23:43:48,813 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 23:43:48,813 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 23:43:48,813 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 23:43:48,814 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-01-31 23:43:48,814 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 23:43:49,013 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 23:43:49,041 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 23:43:49,043 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 23:43:49,044 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 23:43:49,045 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 23:43:49,046 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers/cdaudio.i.cil-1.c [2022-01-31 23:43:49,105 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0762bea3c/ff87c93b423546b2b034264945d959db/FLAG1053a4177 [2022-01-31 23:43:49,753 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 23:43:49,754 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/cdaudio.i.cil-1.c [2022-01-31 23:43:49,801 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0762bea3c/ff87c93b423546b2b034264945d959db/FLAG1053a4177 [2022-01-31 23:43:49,876 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0762bea3c/ff87c93b423546b2b034264945d959db [2022-01-31 23:43:49,878 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 23:43:49,879 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 23:43:49,888 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 23:43:49,888 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 23:43:49,891 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 23:43:49,891 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:43:49" (1/1) ... [2022-01-31 23:43:49,892 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17174b43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:43:49, skipping insertion in model container [2022-01-31 23:43:49,892 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:43:49" (1/1) ... [2022-01-31 23:43:49,897 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 23:43:49,972 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 23:43:50,576 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] [2022-01-31 23:43:51,184 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 23:43:51,193 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 23:43:51,253 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] [2022-01-31 23:43:51,620 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 23:43:51,645 INFO L208 MainTranslator]: Completed translation [2022-01-31 23:43:51,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:43:51 WrapperNode [2022-01-31 23:43:51,646 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 23:43:51,647 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 23:43:51,647 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 23:43:51,648 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 23:43:51,658 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:43:51" (1/1) ... [2022-01-31 23:43:51,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:43:51" (1/1) ... [2022-01-31 23:43:51,743 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:43:51" (1/1) ... [2022-01-31 23:43:51,744 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:43:51" (1/1) ... [2022-01-31 23:43:51,875 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:43:51" (1/1) ... [2022-01-31 23:43:51,902 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:43:51" (1/1) ... [2022-01-31 23:43:51,924 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:43:51" (1/1) ... [2022-01-31 23:43:51,956 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 23:43:51,957 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 23:43:51,957 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 23:43:51,958 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 23:43:51,960 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:43:51" (1/1) ... [2022-01-31 23:43:51,966 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 23:43:51,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 23:43:51,993 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) [2022-01-31 23:43:52,017 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 [2022-01-31 23:43:52,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 23:43:52,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 23:43:52,036 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 23:43:52,036 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlWriteRegistryValue [2022-01-31 23:43:52,036 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedIncrement [2022-01-31 23:43:52,036 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedDecrement [2022-01-31 23:43:52,036 INFO L138 BoogieDeclarations]: Found implementation of procedure MmLockPagableDataSection [2022-01-31 23:43:52,036 INFO L138 BoogieDeclarations]: Found implementation of procedure IoOpenDeviceRegistryKey [2022-01-31 23:43:52,037 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-01-31 23:43:52,037 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-01-31 23:43:52,037 INFO L138 BoogieDeclarations]: Found implementation of procedure SendSrbSynchronous [2022-01-31 23:43:52,037 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioAddDevice [2022-01-31 23:43:52,037 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSignalCompletion [2022-01-31 23:43:52,037 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioStartDevice [2022-01-31 23:43:52,037 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPnp [2022-01-31 23:43:52,037 INFO L138 BoogieDeclarations]: Found implementation of procedure DriverEntry [2022-01-31 23:43:52,038 INFO L138 BoogieDeclarations]: Found implementation of procedure NecSupportNeeded [2022-01-31 23:43:52,038 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioReadWrite [2022-01-31 23:43:52,039 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioDeviceControl [2022-01-31 23:43:52,039 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSendToNextDriver [2022-01-31 23:43:52,039 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioIsPlayActive [2022-01-31 23:43:52,039 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioNECDeviceControl [2022-01-31 23:43:52,039 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPioneerDeviceControl [2022-01-31 23:43:52,039 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioDenonDeviceControl [2022-01-31 23:43:52,039 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioHitachiSendPauseCommand [2022-01-31 23:43:52,039 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioHitachiDeviceControl [2022-01-31 23:43:52,039 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio535DeviceControl [2022-01-31 23:43:52,040 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio435DeviceControl [2022-01-31 23:43:52,040 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioAtapiDeviceControl [2022-01-31 23:43:52,040 INFO L138 BoogieDeclarations]: Found implementation of procedure HpCdrProcessLastSession [2022-01-31 23:43:52,040 INFO L138 BoogieDeclarations]: Found implementation of procedure HPCdrCompletion [2022-01-31 23:43:52,040 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioHPCdrDeviceControl [2022-01-31 23:43:52,040 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioForwardIrpSynchronous [2022-01-31 23:43:52,040 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioUnload [2022-01-31 23:43:52,040 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPower [2022-01-31 23:43:52,040 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-01-31 23:43:52,040 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 23:43:52,040 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_malloc [2022-01-31 23:43:52,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAcquireFastMutex [2022-01-31 23:43:52,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ExReleaseFastMutex [2022-01-31 23:43:52,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2022-01-31 23:43:52,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ExFreePool [2022-01-31 23:43:52,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertHeadList [2022-01-31 23:43:52,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertTailList [2022-01-31 23:43:52,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedRemoveHeadList [2022-01-31 23:43:52,041 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAllocateMdl [2022-01-31 23:43:52,041 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAttachDeviceToDeviceStack [2022-01-31 23:43:52,041 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildAsynchronousFsdRequest [2022-01-31 23:43:52,041 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2022-01-31 23:43:52,041 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateDevice [2022-01-31 23:43:52,041 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateSymbolicLink [2022-01-31 23:43:52,042 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteDevice [2022-01-31 23:43:52,042 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2022-01-31 23:43:52,042 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDetachDevice [2022-01-31 23:43:52,042 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeIrp [2022-01-31 23:43:52,042 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeMdl [2022-01-31 23:43:52,042 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2022-01-31 23:43:52,042 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2022-01-31 23:43:52,042 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2022-01-31 23:43:52,042 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReleaseCancelSpinLock [2022-01-31 23:43:52,042 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-01-31 23:43:52,042 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetHardErrorOrVerifyDevice [2022-01-31 23:43:52,042 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-01-31 23:43:52,042 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-01-31 23:43:52,043 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-01-31 23:43:52,043 INFO L138 BoogieDeclarations]: Found implementation of procedure KeAcquireSpinLockRaiseToDpc [2022-01-31 23:43:52,043 INFO L138 BoogieDeclarations]: Found implementation of procedure KeDelayExecutionThread [2022-01-31 23:43:52,043 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeEvent [2022-01-31 23:43:52,043 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSemaphore [2022-01-31 23:43:52,043 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSpinLock [2022-01-31 23:43:52,043 INFO L138 BoogieDeclarations]: Found implementation of procedure KeReleaseSemaphore [2022-01-31 23:43:52,043 INFO L138 BoogieDeclarations]: Found implementation of procedure KfReleaseSpinLock [2022-01-31 23:43:52,043 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-01-31 23:43:52,043 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-01-31 23:43:52,043 INFO L138 BoogieDeclarations]: Found implementation of procedure MmAllocateContiguousMemory [2022-01-31 23:43:52,043 INFO L138 BoogieDeclarations]: Found implementation of procedure MmFreeContiguousMemory [2022-01-31 23:43:52,044 INFO L138 BoogieDeclarations]: Found implementation of procedure MmMapLockedPagesSpecifyCache [2022-01-31 23:43:52,044 INFO L138 BoogieDeclarations]: Found implementation of procedure MmPageEntireDriver [2022-01-31 23:43:52,044 INFO L138 BoogieDeclarations]: Found implementation of procedure MmResetDriverPaging [2022-01-31 23:43:52,045 INFO L138 BoogieDeclarations]: Found implementation of procedure MmUnlockPages [2022-01-31 23:43:52,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2022-01-31 23:43:52,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ObfDereferenceObject [2022-01-31 23:43:52,045 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-01-31 23:43:52,045 INFO L138 BoogieDeclarations]: Found implementation of procedure PoStartNextPowerIrp [2022-01-31 23:43:52,046 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2022-01-31 23:43:52,046 INFO L138 BoogieDeclarations]: Found implementation of procedure PsTerminateSystemThread [2022-01-31 23:43:52,046 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlAnsiStringToUnicodeString [2022-01-31 23:43:52,046 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCompareMemory [2022-01-31 23:43:52,046 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCopyUnicodeString [2022-01-31 23:43:52,046 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlDeleteRegistryValue [2022-01-31 23:43:52,047 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlFreeUnicodeString [2022-01-31 23:43:52,047 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitString [2022-01-31 23:43:52,047 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitUnicodeString [2022-01-31 23:43:52,047 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlQueryRegistryValues [2022-01-31 23:43:52,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-01-31 23:43:52,047 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-01-31 23:43:52,048 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-01-31 23:43:52,048 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 23:43:52,048 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 23:43:52,048 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 23:43:52,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 23:43:52,048 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-01-31 23:43:52,048 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 23:43:52,048 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-01-31 23:43:52,048 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2022-01-31 23:43:52,048 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-01-31 23:43:52,048 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2022-01-31 23:43:52,048 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-01-31 23:43:52,049 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2022-01-31 23:43:52,049 INFO L130 BoogieDeclarations]: Found specification of procedure RtlQueryRegistryValues [2022-01-31 23:43:52,049 INFO L130 BoogieDeclarations]: Found specification of procedure RtlWriteRegistryValue [2022-01-31 23:43:52,049 INFO L130 BoogieDeclarations]: Found specification of procedure RtlDeleteRegistryValue [2022-01-31 23:43:52,049 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitString [2022-01-31 23:43:52,049 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitUnicodeString [2022-01-31 23:43:52,049 INFO L130 BoogieDeclarations]: Found specification of procedure RtlAnsiStringToUnicodeString [2022-01-31 23:43:52,050 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCopyUnicodeString [2022-01-31 23:43:52,050 INFO L130 BoogieDeclarations]: Found specification of procedure RtlFreeUnicodeString [2022-01-31 23:43:52,050 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCompareMemory [2022-01-31 23:43:52,050 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedIncrement [2022-01-31 23:43:52,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 23:43:52,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 23:43:52,051 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedDecrement [2022-01-31 23:43:52,051 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeEvent [2022-01-31 23:43:52,051 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-01-31 23:43:52,051 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSemaphore [2022-01-31 23:43:52,051 INFO L130 BoogieDeclarations]: Found specification of procedure KeReleaseSemaphore [2022-01-31 23:43:52,052 INFO L130 BoogieDeclarations]: Found specification of procedure KeDelayExecutionThread [2022-01-31 23:43:52,052 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-01-31 23:43:52,052 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSpinLock [2022-01-31 23:43:52,052 INFO L130 BoogieDeclarations]: Found specification of procedure KfReleaseSpinLock [2022-01-31 23:43:52,052 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2022-01-31 23:43:52,052 INFO L130 BoogieDeclarations]: Found specification of procedure ExFreePool [2022-01-31 23:43:52,052 INFO L130 BoogieDeclarations]: Found specification of procedure ExAcquireFastMutex [2022-01-31 23:43:52,052 INFO L130 BoogieDeclarations]: Found specification of procedure ExReleaseFastMutex [2022-01-31 23:43:52,052 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertHeadList [2022-01-31 23:43:52,052 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertTailList [2022-01-31 23:43:52,053 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedRemoveHeadList [2022-01-31 23:43:52,053 INFO L130 BoogieDeclarations]: Found specification of procedure MmUnlockPages [2022-01-31 23:43:52,053 INFO L130 BoogieDeclarations]: Found specification of procedure MmMapLockedPagesSpecifyCache [2022-01-31 23:43:52,053 INFO L130 BoogieDeclarations]: Found specification of procedure MmAllocateContiguousMemory [2022-01-31 23:43:52,054 INFO L130 BoogieDeclarations]: Found specification of procedure MmFreeContiguousMemory [2022-01-31 23:43:52,054 INFO L130 BoogieDeclarations]: Found specification of procedure MmLockPagableDataSection [2022-01-31 23:43:52,054 INFO L130 BoogieDeclarations]: Found specification of procedure MmResetDriverPaging [2022-01-31 23:43:52,055 INFO L130 BoogieDeclarations]: Found specification of procedure MmPageEntireDriver [2022-01-31 23:43:52,057 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2022-01-31 23:43:52,057 INFO L130 BoogieDeclarations]: Found specification of procedure PsTerminateSystemThread [2022-01-31 23:43:52,062 INFO L130 BoogieDeclarations]: Found specification of procedure IoAllocateMdl [2022-01-31 23:43:52,062 INFO L130 BoogieDeclarations]: Found specification of procedure IoAttachDeviceToDeviceStack [2022-01-31 23:43:52,062 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildAsynchronousFsdRequest [2022-01-31 23:43:52,063 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2022-01-31 23:43:52,063 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-01-31 23:43:52,063 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-01-31 23:43:52,063 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateDevice [2022-01-31 23:43:52,063 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateSymbolicLink [2022-01-31 23:43:52,063 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteDevice [2022-01-31 23:43:52,063 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2022-01-31 23:43:52,063 INFO L130 BoogieDeclarations]: Found specification of procedure IoDetachDevice [2022-01-31 23:43:52,063 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeIrp [2022-01-31 23:43:52,063 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeMdl [2022-01-31 23:43:52,063 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2022-01-31 23:43:52,063 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2022-01-31 23:43:52,063 INFO L130 BoogieDeclarations]: Found specification of procedure IoReleaseCancelSpinLock [2022-01-31 23:43:52,063 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetHardErrorOrVerifyDevice [2022-01-31 23:43:52,063 INFO L130 BoogieDeclarations]: Found specification of procedure IoOpenDeviceRegistryKey [2022-01-31 23:43:52,064 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2022-01-31 23:43:52,064 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-01-31 23:43:52,064 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-01-31 23:43:52,064 INFO L130 BoogieDeclarations]: Found specification of procedure PoStartNextPowerIrp [2022-01-31 23:43:52,064 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2022-01-31 23:43:52,064 INFO L130 BoogieDeclarations]: Found specification of procedure ObfDereferenceObject [2022-01-31 23:43:52,064 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-01-31 23:43:52,064 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-01-31 23:43:52,064 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-01-31 23:43:52,064 INFO L130 BoogieDeclarations]: Found specification of procedure DriverEntry [2022-01-31 23:43:52,064 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioReadWrite [2022-01-31 23:43:52,064 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioDeviceControl [2022-01-31 23:43:52,064 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSendToNextDriver [2022-01-31 23:43:52,064 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioIsPlayActive [2022-01-31 23:43:52,064 INFO L130 BoogieDeclarations]: Found specification of procedure NecSupportNeeded [2022-01-31 23:43:52,064 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioNECDeviceControl [2022-01-31 23:43:52,065 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPioneerDeviceControl [2022-01-31 23:43:52,065 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioDenonDeviceControl [2022-01-31 23:43:52,065 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioHitachiSendPauseCommand [2022-01-31 23:43:52,065 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioHitachiDeviceControl [2022-01-31 23:43:52,065 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio535DeviceControl [2022-01-31 23:43:52,065 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio435DeviceControl [2022-01-31 23:43:52,065 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioAtapiDeviceControl [2022-01-31 23:43:52,065 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioHPCdrDeviceControl [2022-01-31 23:43:52,065 INFO L130 BoogieDeclarations]: Found specification of procedure HpCdrProcessLastSession [2022-01-31 23:43:52,065 INFO L130 BoogieDeclarations]: Found specification of procedure HPCdrCompletion [2022-01-31 23:43:52,065 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPower [2022-01-31 23:43:52,065 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioForwardIrpSynchronous [2022-01-31 23:43:52,065 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioUnload [2022-01-31 23:43:52,065 INFO L130 BoogieDeclarations]: Found specification of procedure SendSrbSynchronous [2022-01-31 23:43:52,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 23:43:52,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 23:43:52,066 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioAddDevice [2022-01-31 23:43:52,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-01-31 23:43:52,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-01-31 23:43:52,066 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-01-31 23:43:52,066 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSignalCompletion [2022-01-31 23:43:52,066 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioStartDevice [2022-01-31 23:43:52,066 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPnp [2022-01-31 23:43:52,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-01-31 23:43:52,066 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-01-31 23:43:52,066 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 23:43:52,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-31 23:43:52,066 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_malloc [2022-01-31 23:43:52,066 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-01-31 23:43:52,066 INFO L130 BoogieDeclarations]: Found specification of procedure KeAcquireSpinLockRaiseToDpc [2022-01-31 23:43:52,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 23:43:52,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 23:43:52,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 23:43:52,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-01-31 23:43:52,067 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-01-31 23:43:52,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-01-31 23:43:52,067 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-01-31 23:43:52,612 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 23:43:52,614 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 23:43:52,645 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:43:52,676 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 23:43:52,676 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 23:43:52,677 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:43:52,687 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 23:43:52,687 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 23:43:52,701 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:43:52,706 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 23:43:52,707 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 23:43:52,707 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:43:52,733 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 23:43:52,733 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 23:43:52,779 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:43:55,409 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume !false; [2022-01-31 23:43:55,409 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume false; [2022-01-31 23:43:55,429 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:43:55,450 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 23:43:55,450 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 23:43:55,451 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:43:55,457 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 23:43:55,457 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 23:43:55,457 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:43:55,466 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 23:43:55,466 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 23:43:55,467 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:43:55,491 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 23:43:55,492 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 23:43:55,495 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:44:02,201 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2022-01-31 23:44:02,202 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2022-01-31 23:44:02,238 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:44:02,386 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##39: assume false; [2022-01-31 23:44:02,387 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##40: assume !false; [2022-01-31 23:44:02,392 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:44:02,406 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 23:44:02,406 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 23:44:02,407 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:44:02,446 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2022-01-31 23:44:02,446 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2022-01-31 23:44:02,446 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:44:02,451 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 23:44:02,451 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 23:44:02,451 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:44:02,460 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 23:44:02,460 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 23:44:02,475 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:44:02,481 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 23:44:02,481 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 23:44:02,481 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:44:02,489 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 23:44:02,490 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 23:44:02,831 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:44:04,185 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2022-01-31 23:44:04,185 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2022-01-31 23:44:04,194 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:44:06,919 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume false; [2022-01-31 23:44:06,919 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##22: assume !false; [2022-01-31 23:44:06,924 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:44:06,944 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-01-31 23:44:06,945 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-01-31 23:44:06,962 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:44:06,966 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 23:44:06,966 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 23:44:06,997 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:44:07,055 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##32: assume false; [2022-01-31 23:44:07,055 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##33: assume !false; [2022-01-31 23:44:07,208 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:44:07,217 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 23:44:07,217 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 23:44:07,388 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:44:07,391 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 23:44:07,392 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 23:44:07,392 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:44:08,989 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume !false; [2022-01-31 23:44:08,990 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume false; [2022-01-31 23:44:08,993 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:44:09,012 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2022-01-31 23:44:09,012 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2022-01-31 23:44:09,018 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:44:09,027 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-01-31 23:44:09,027 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-01-31 23:44:09,040 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:44:09,045 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 23:44:09,045 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 23:44:09,671 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:44:09,710 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2022-01-31 23:44:09,711 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2022-01-31 23:44:09,711 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L3709: #res := 0; [2022-01-31 23:44:09,711 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:44:09,716 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 23:44:09,716 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 23:44:09,765 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:44:14,450 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2022-01-31 23:44:14,451 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2022-01-31 23:44:14,499 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 23:44:14,517 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 23:44:14,517 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2022-01-31 23:44:14,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:44:14 BoogieIcfgContainer [2022-01-31 23:44:14,520 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 23:44:14,522 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 23:44:14,522 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 23:44:14,525 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 23:44:14,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 11:43:49" (1/3) ... [2022-01-31 23:44:14,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@729ea0b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:44:14, skipping insertion in model container [2022-01-31 23:44:14,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:43:51" (2/3) ... [2022-01-31 23:44:14,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@729ea0b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:44:14, skipping insertion in model container [2022-01-31 23:44:14,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:44:14" (3/3) ... [2022-01-31 23:44:14,527 INFO L111 eAbstractionObserver]: Analyzing ICFG cdaudio.i.cil-1.c [2022-01-31 23:44:14,531 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 23:44:14,531 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 23:44:14,568 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 23:44:14,573 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=QVASR [2022-01-31 23:44:14,574 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 23:44:14,617 INFO L276 IsEmpty]: Start isEmpty. Operand has 1253 states, 952 states have (on average 1.513655462184874) internal successors, (1441), 982 states have internal predecessors, (1441), 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) [2022-01-31 23:44:14,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-31 23:44:14,625 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:44:14,625 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:44:14,626 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:44:14,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:44:14,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1643737958, now seen corresponding path program 1 times [2022-01-31 23:44:14,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:44:14,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1270585157] [2022-01-31 23:44:14,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:44:14,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:44:14,736 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:44:14,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:44:15,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:44:15,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:44:15,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 23:44:15,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:44:15,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:44:15,242 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:44:15,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1270585157] [2022-01-31 23:44:15,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1270585157] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:44:15,243 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:44:15,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 23:44:15,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481190775] [2022-01-31 23:44:15,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:44:15,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 23:44:15,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:44:15,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 23:44:15,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-31 23:44:15,274 INFO L87 Difference]: Start difference. First operand has 1253 states, 952 states have (on average 1.513655462184874) internal successors, (1441), 982 states have internal predecessors, (1441), 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 4 states, 4 states have (on average 5.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 23:44:20,849 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 [] [2022-01-31 23:44:24,655 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:44:25,958 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:44:28,527 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:44:31,138 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:44:31,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:44:31,454 INFO L93 Difference]: Finished difference Result 1511 states and 2392 transitions. [2022-01-31 23:44:31,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 23:44:31,456 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2022-01-31 23:44:31,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:44:31,472 INFO L225 Difference]: With dead ends: 1511 [2022-01-31 23:44:31,473 INFO L226 Difference]: Without dead ends: 834 [2022-01-31 23:44:31,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-31 23:44:31,485 INFO L933 BasicCegarLoop]: 925 mSDtfsCounter, 449 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 1287 mSolverCounterSat, 182 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 1470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 1287 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.9s IncrementalHoareTripleChecker+Time [2022-01-31 23:44:31,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [473 Valid, 961 Invalid, 1470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 1287 Invalid, 1 Unknown, 0 Unchecked, 15.9s Time] [2022-01-31 23:44:31,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2022-01-31 23:44:31,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 671. [2022-01-31 23:44:31,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 502 states have (on average 1.4641434262948207) internal successors, (735), 519 states have internal predecessors, (735), 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) [2022-01-31 23:44:31,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 982 transitions. [2022-01-31 23:44:31,679 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 982 transitions. Word has length 26 [2022-01-31 23:44:31,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:44:31,680 INFO L470 AbstractCegarLoop]: Abstraction has 671 states and 982 transitions. [2022-01-31 23:44:31,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 23:44:31,682 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 982 transitions. [2022-01-31 23:44:31,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-31 23:44:31,683 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:44:31,683 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:44:31,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 23:44:31,687 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:44:31,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:44:31,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1264911980, now seen corresponding path program 1 times [2022-01-31 23:44:31,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:44:31,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [244633705] [2022-01-31 23:44:31,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:44:31,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:44:31,721 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:44:31,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:44:31,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:44:31,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:44:31,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 23:44:31,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:44:31,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:44:31,984 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:44:31,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [244633705] [2022-01-31 23:44:31,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [244633705] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:44:31,985 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:44:31,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 23:44:31,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946468802] [2022-01-31 23:44:31,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:44:31,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 23:44:31,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:44:31,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 23:44:31,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-31 23:44:31,987 INFO L87 Difference]: Start difference. First operand 671 states and 982 transitions. 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) [2022-01-31 23:44:34,653 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:44:36,964 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:44:39,385 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:44:41,422 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:44:46,092 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:44:47,176 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:44:49,261 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:44:51,183 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:44:54,277 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:44:56,497 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:44:59,463 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 [] [2022-01-31 23:44:59,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:44:59,619 INFO L93 Difference]: Finished difference Result 853 states and 1288 transitions. [2022-01-31 23:44:59,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 23:44:59,620 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 [2022-01-31 23:44:59,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:44:59,626 INFO L225 Difference]: With dead ends: 853 [2022-01-31 23:44:59,626 INFO L226 Difference]: Without dead ends: 834 [2022-01-31 23:44:59,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-31 23:44:59,628 INFO L933 BasicCegarLoop]: 910 mSDtfsCounter, 913 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 1357 mSolverCounterSat, 388 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 937 SdHoareTripleChecker+Valid, 1262 SdHoareTripleChecker+Invalid, 1752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 1357 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.3s IncrementalHoareTripleChecker+Time [2022-01-31 23:44:59,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [937 Valid, 1262 Invalid, 1752 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [388 Valid, 1357 Invalid, 7 Unknown, 0 Unchecked, 27.3s Time] [2022-01-31 23:44:59,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2022-01-31 23:44:59,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 671. [2022-01-31 23:44:59,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 502 states have (on average 1.4621513944223108) internal successors, (734), 519 states have internal predecessors, (734), 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) [2022-01-31 23:44:59,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 981 transitions. [2022-01-31 23:44:59,689 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 981 transitions. Word has length 26 [2022-01-31 23:44:59,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:44:59,689 INFO L470 AbstractCegarLoop]: Abstraction has 671 states and 981 transitions. [2022-01-31 23:44:59,689 INFO L471 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) [2022-01-31 23:44:59,689 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 981 transitions. [2022-01-31 23:44:59,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-31 23:44:59,690 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:44:59,690 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:44:59,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 23:44:59,691 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:44:59,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:44:59,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1608759109, now seen corresponding path program 1 times [2022-01-31 23:44:59,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:44:59,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [751235811] [2022-01-31 23:44:59,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:44:59,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:44:59,704 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:44:59,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:44:59,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:44:59,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:44:59,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 23:44:59,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:44:59,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-01-31 23:44:59,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:44:59,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:44:59,963 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:44:59,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [751235811] [2022-01-31 23:44:59,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [751235811] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:44:59,966 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:44:59,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 23:44:59,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340772654] [2022-01-31 23:44:59,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:44:59,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 23:44:59,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:44:59,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 23:44:59,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-31 23:44:59,968 INFO L87 Difference]: Start difference. First operand 671 states and 981 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) [2022-01-31 23:45:04,869 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 [] [2022-01-31 23:45:08,110 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:45:10,879 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:45:13,730 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:45:16,297 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:45:16,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:45:16,521 INFO L93 Difference]: Finished difference Result 1433 states and 2121 transitions. [2022-01-31 23:45:16,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 23:45:16,521 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 [2022-01-31 23:45:16,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:45:16,529 INFO L225 Difference]: With dead ends: 1433 [2022-01-31 23:45:16,529 INFO L226 Difference]: Without dead ends: 1164 [2022-01-31 23:45:16,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-31 23:45:16,531 INFO L933 BasicCegarLoop]: 1206 mSDtfsCounter, 1907 mSDsluCounter, 734 mSDsCounter, 0 mSdLazyCounter, 1767 mSolverCounterSat, 565 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1945 SdHoareTripleChecker+Valid, 1940 SdHoareTripleChecker+Invalid, 2334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 565 IncrementalHoareTripleChecker+Valid, 1767 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.3s IncrementalHoareTripleChecker+Time [2022-01-31 23:45:16,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1945 Valid, 1940 Invalid, 2334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [565 Valid, 1767 Invalid, 2 Unknown, 0 Unchecked, 16.3s Time] [2022-01-31 23:45:16,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1164 states. [2022-01-31 23:45:16,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1164 to 975. [2022-01-31 23:45:16,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 975 states, 740 states have (on average 1.4337837837837837) internal successors, (1061), 744 states have internal predecessors, (1061), 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) [2022-01-31 23:45:16,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1428 transitions. [2022-01-31 23:45:16,632 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1428 transitions. Word has length 31 [2022-01-31 23:45:16,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:45:16,632 INFO L470 AbstractCegarLoop]: Abstraction has 975 states and 1428 transitions. [2022-01-31 23:45:16,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 3 states have internal predecessors, (22), 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) [2022-01-31 23:45:16,633 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1428 transitions. [2022-01-31 23:45:16,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-31 23:45:16,634 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:45:16,635 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:45:16,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-31 23:45:16,635 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:45:16,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:45:16,636 INFO L85 PathProgramCache]: Analyzing trace with hash 241514610, now seen corresponding path program 1 times [2022-01-31 23:45:16,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:45:16,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2015462672] [2022-01-31 23:45:16,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:45:16,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:45:16,649 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:45:16,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:45:16,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:45:16,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:45:16,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 23:45:16,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:45:16,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-01-31 23:45:16,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:45:16,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:45:16,885 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:45:16,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2015462672] [2022-01-31 23:45:16,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2015462672] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:45:16,885 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:45:16,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 23:45:16,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269447950] [2022-01-31 23:45:16,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:45:16,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 23:45:16,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:45:16,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 23:45:16,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-31 23:45:16,887 INFO L87 Difference]: Start difference. First operand 975 states and 1428 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) [2022-01-31 23:45:23,147 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:45:25,607 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:45:28,228 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:45:31,037 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:45:32,707 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:45:35,050 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:45:38,970 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:45:41,638 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:45:44,424 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:45:46,728 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:45:49,077 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:45:51,150 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:45:54,404 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:45:58,738 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:46:00,548 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 [] [2022-01-31 23:46:00,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:46:00,933 INFO L93 Difference]: Finished difference Result 2245 states and 3387 transitions. [2022-01-31 23:46:00,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 23:46:00,933 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 [2022-01-31 23:46:00,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:46:00,944 INFO L225 Difference]: With dead ends: 2245 [2022-01-31 23:46:00,944 INFO L226 Difference]: Without dead ends: 1805 [2022-01-31 23:46:00,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-31 23:46:00,947 INFO L933 BasicCegarLoop]: 1348 mSDtfsCounter, 1564 mSDsluCounter, 790 mSDsCounter, 0 mSdLazyCounter, 2324 mSolverCounterSat, 527 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1616 SdHoareTripleChecker+Valid, 2138 SdHoareTripleChecker+Invalid, 2862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 2324 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.7s IncrementalHoareTripleChecker+Time [2022-01-31 23:46:00,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1616 Valid, 2138 Invalid, 2862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 2324 Invalid, 11 Unknown, 0 Unchecked, 43.7s Time] [2022-01-31 23:46:00,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1805 states. [2022-01-31 23:46:01,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1805 to 1140. [2022-01-31 23:46:01,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1140 states, 860 states have (on average 1.4267441860465115) internal successors, (1227), 863 states have internal predecessors, (1227), 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) [2022-01-31 23:46:01,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 1693 transitions. [2022-01-31 23:46:01,104 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 1693 transitions. Word has length 38 [2022-01-31 23:46:01,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:46:01,104 INFO L470 AbstractCegarLoop]: Abstraction has 1140 states and 1693 transitions. [2022-01-31 23:46:01,104 INFO L471 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) [2022-01-31 23:46:01,105 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 1693 transitions. [2022-01-31 23:46:01,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-31 23:46:01,111 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:46:01,111 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:46:01,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-31 23:46:01,111 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:46:01,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:46:01,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1341233328, now seen corresponding path program 1 times [2022-01-31 23:46:01,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:46:01,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1608978017] [2022-01-31 23:46:01,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:46:01,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:46:01,125 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:46:01,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:46:01,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:46:01,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:46:01,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 23:46:01,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:46:01,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-01-31 23:46:01,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:46:01,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:46:01,466 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:46:01,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1608978017] [2022-01-31 23:46:01,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1608978017] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:46:01,467 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:46:01,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-31 23:46:01,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264494016] [2022-01-31 23:46:01,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:46:01,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-31 23:46:01,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:46:01,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-31 23:46:01,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-31 23:46:01,468 INFO L87 Difference]: Start difference. First operand 1140 states and 1693 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) [2022-01-31 23:46:08,776 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:46:14,537 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:46:16,505 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:46:19,187 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:46:21,567 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:46:22,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:46:22,165 INFO L93 Difference]: Finished difference Result 2173 states and 3285 transitions. [2022-01-31 23:46:22,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-31 23:46:22,165 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 [2022-01-31 23:46:22,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:46:22,173 INFO L225 Difference]: With dead ends: 2173 [2022-01-31 23:46:22,173 INFO L226 Difference]: Without dead ends: 1482 [2022-01-31 23:46:22,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2022-01-31 23:46:22,177 INFO L933 BasicCegarLoop]: 1347 mSDtfsCounter, 3689 mSDsluCounter, 1257 mSDsCounter, 0 mSdLazyCounter, 2615 mSolverCounterSat, 1394 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3720 SdHoareTripleChecker+Valid, 2604 SdHoareTripleChecker+Invalid, 4012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1394 IncrementalHoareTripleChecker+Valid, 2615 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.9s IncrementalHoareTripleChecker+Time [2022-01-31 23:46:22,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3720 Valid, 2604 Invalid, 4012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1394 Valid, 2615 Invalid, 3 Unknown, 0 Unchecked, 19.9s Time] [2022-01-31 23:46:22,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2022-01-31 23:46:22,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 1134. [2022-01-31 23:46:22,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1134 states, 855 states have (on average 1.424561403508772) internal successors, (1218), 858 states have internal predecessors, (1218), 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) [2022-01-31 23:46:22,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1134 states to 1134 states and 1681 transitions. [2022-01-31 23:46:22,322 INFO L78 Accepts]: Start accepts. Automaton has 1134 states and 1681 transitions. Word has length 39 [2022-01-31 23:46:22,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:46:22,323 INFO L470 AbstractCegarLoop]: Abstraction has 1134 states and 1681 transitions. [2022-01-31 23:46:22,323 INFO L471 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) [2022-01-31 23:46:22,323 INFO L276 IsEmpty]: Start isEmpty. Operand 1134 states and 1681 transitions. [2022-01-31 23:46:22,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-31 23:46:22,325 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:46:22,325 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:46:22,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-31 23:46:22,325 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:46:22,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:46:22,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1121344822, now seen corresponding path program 1 times [2022-01-31 23:46:22,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:46:22,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344126602] [2022-01-31 23:46:22,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:46:22,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:46:22,339 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:46:22,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:46:22,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:46:22,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:46:22,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 23:46:22,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:46:22,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-01-31 23:46:22,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:46:22,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:46:22,660 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:46:22,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [344126602] [2022-01-31 23:46:22,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [344126602] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:46:22,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:46:22,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 23:46:22,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19267046] [2022-01-31 23:46:22,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:46:22,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 23:46:22,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:46:22,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 23:46:22,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-31 23:46:22,661 INFO L87 Difference]: Start difference. First operand 1134 states and 1681 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) [2022-01-31 23:46:27,939 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:46:29,054 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:46:31,077 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:46:35,756 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:46:38,743 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:46:40,837 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:46:42,674 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:46:44,123 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:46:46,150 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:46:48,568 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:46:50,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:46:50,153 INFO L93 Difference]: Finished difference Result 2003 states and 2930 transitions. [2022-01-31 23:46:50,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 23:46:50,153 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 [2022-01-31 23:46:50,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:46:50,163 INFO L225 Difference]: With dead ends: 2003 [2022-01-31 23:46:50,163 INFO L226 Difference]: Without dead ends: 1835 [2022-01-31 23:46:50,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-31 23:46:50,165 INFO L933 BasicCegarLoop]: 1121 mSDtfsCounter, 1881 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 1500 mSolverCounterSat, 534 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1925 SdHoareTripleChecker+Valid, 1830 SdHoareTripleChecker+Invalid, 2040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 534 IncrementalHoareTripleChecker+Valid, 1500 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.1s IncrementalHoareTripleChecker+Time [2022-01-31 23:46:50,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1925 Valid, 1830 Invalid, 2040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [534 Valid, 1500 Invalid, 6 Unknown, 0 Unchecked, 27.1s Time] [2022-01-31 23:46:50,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1835 states. [2022-01-31 23:46:50,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1835 to 1575. [2022-01-31 23:46:50,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1575 states, 1203 states have (on average 1.43142144638404) internal successors, (1722), 1204 states have internal predecessors, (1722), 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) [2022-01-31 23:46:50,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 2322 transitions. [2022-01-31 23:46:50,391 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 2322 transitions. Word has length 40 [2022-01-31 23:46:50,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:46:50,391 INFO L470 AbstractCegarLoop]: Abstraction has 1575 states and 2322 transitions. [2022-01-31 23:46:50,391 INFO L471 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) [2022-01-31 23:46:50,392 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 2322 transitions. [2022-01-31 23:46:50,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-31 23:46:50,392 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:46:50,392 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:46:50,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-31 23:46:50,393 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:46:50,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:46:50,393 INFO L85 PathProgramCache]: Analyzing trace with hash -98657190, now seen corresponding path program 1 times [2022-01-31 23:46:50,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:46:50,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1964922687] [2022-01-31 23:46:50,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:46:50,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:46:50,405 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:46:50,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:46:50,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:46:50,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:46:50,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 23:46:50,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:46:50,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-01-31 23:46:50,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:46:50,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:46:50,625 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:46:50,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1964922687] [2022-01-31 23:46:50,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1964922687] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:46:50,625 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:46:50,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 23:46:50,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717447709] [2022-01-31 23:46:50,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:46:50,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 23:46:50,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:46:50,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 23:46:50,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-31 23:46:50,627 INFO L87 Difference]: Start difference. First operand 1575 states and 2322 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) [2022-01-31 23:46:55,852 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:46:58,106 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:47:00,135 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:47:02,176 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:47:06,317 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:47:08,456 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:47:10,508 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:47:13,954 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:47:16,718 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:47:20,020 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:47:23,269 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:47:25,179 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:47:27,504 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:47:29,305 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:47:29,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:47:29,910 INFO L93 Difference]: Finished difference Result 1712 states and 2548 transitions. [2022-01-31 23:47:29,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 23:47:29,924 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 [2022-01-31 23:47:29,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:47:29,933 INFO L225 Difference]: With dead ends: 1712 [2022-01-31 23:47:29,933 INFO L226 Difference]: Without dead ends: 1708 [2022-01-31 23:47:29,934 INFO L932 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 [2022-01-31 23:47:29,938 INFO L933 BasicCegarLoop]: 894 mSDtfsCounter, 481 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 2184 mSolverCounterSat, 171 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 1474 SdHoareTripleChecker+Invalid, 2367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 2184 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.9s IncrementalHoareTripleChecker+Time [2022-01-31 23:47:29,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [505 Valid, 1474 Invalid, 2367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 2184 Invalid, 12 Unknown, 0 Unchecked, 38.9s Time] [2022-01-31 23:47:29,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1708 states. [2022-01-31 23:47:30,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1708 to 1574. [2022-01-31 23:47:30,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1574 states, 1203 states have (on average 1.42975893599335) internal successors, (1720), 1203 states have internal predecessors, (1720), 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) [2022-01-31 23:47:30,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 2319 transitions. [2022-01-31 23:47:30,176 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 2319 transitions. Word has length 40 [2022-01-31 23:47:30,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:47:30,177 INFO L470 AbstractCegarLoop]: Abstraction has 1574 states and 2319 transitions. [2022-01-31 23:47:30,177 INFO L471 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) [2022-01-31 23:47:30,177 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 2319 transitions. [2022-01-31 23:47:30,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-31 23:47:30,181 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:47:30,181 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:47:30,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-31 23:47:30,181 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:47:30,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:47:30,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1963585708, now seen corresponding path program 1 times [2022-01-31 23:47:30,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:47:30,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1883927487] [2022-01-31 23:47:30,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:47:30,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:47:30,194 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:47:30,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:47:30,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:47:30,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:47:30,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 23:47:30,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:47:30,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-01-31 23:47:30,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:47:30,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-01-31 23:47:30,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:47:30,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:47:30,499 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:47:30,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1883927487] [2022-01-31 23:47:30,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1883927487] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:47:30,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:47:30,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-31 23:47:30,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394339338] [2022-01-31 23:47:30,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:47:30,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-31 23:47:30,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:47:30,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-31 23:47:30,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-31 23:47:30,502 INFO L87 Difference]: Start difference. First operand 1574 states and 2319 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) [2022-01-31 23:47:34,427 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:47:40,423 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:47:42,461 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:47:44,497 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:47:46,720 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:47:48,752 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:47:53,728 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:47:55,970 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:47:58,245 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:48:00,285 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:48:02,317 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:48:04,738 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:48:06,778 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:48:10,112 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:48:12,185 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:48:13,519 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:48:15,537 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:48:18,203 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:48:19,494 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:48:21,638 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:48:22,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:48:22,643 INFO L93 Difference]: Finished difference Result 2638 states and 3924 transitions. [2022-01-31 23:48:22,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-31 23:48:22,644 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 [2022-01-31 23:48:22,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:48:22,651 INFO L225 Difference]: With dead ends: 2638 [2022-01-31 23:48:22,651 INFO L226 Difference]: Without dead ends: 1556 [2022-01-31 23:48:22,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2022-01-31 23:48:22,655 INFO L933 BasicCegarLoop]: 896 mSDtfsCounter, 2029 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 2568 mSolverCounterSat, 1024 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2055 SdHoareTripleChecker+Valid, 1604 SdHoareTripleChecker+Invalid, 3606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1024 IncrementalHoareTripleChecker+Valid, 2568 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.3s IncrementalHoareTripleChecker+Time [2022-01-31 23:48:22,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2055 Valid, 1604 Invalid, 3606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1024 Valid, 2568 Invalid, 14 Unknown, 0 Unchecked, 51.3s Time] [2022-01-31 23:48:22,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1556 states. [2022-01-31 23:48:22,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1556 to 1163. [2022-01-31 23:48:22,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 890 states have (on average 1.4112359550561797) internal successors, (1256), 892 states have internal predecessors, (1256), 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) [2022-01-31 23:48:22,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 1692 transitions. [2022-01-31 23:48:22,848 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 1692 transitions. Word has length 52 [2022-01-31 23:48:22,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:48:22,848 INFO L470 AbstractCegarLoop]: Abstraction has 1163 states and 1692 transitions. [2022-01-31 23:48:22,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 4 states have internal predecessors, (37), 3 states have call successors, (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) [2022-01-31 23:48:22,849 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 1692 transitions. [2022-01-31 23:48:22,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-31 23:48:22,850 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:48:22,851 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:48:22,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-31 23:48:22,851 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:48:22,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:48:22,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1582113836, now seen corresponding path program 1 times [2022-01-31 23:48:22,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:48:22,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1446924811] [2022-01-31 23:48:22,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:48:22,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:48:22,863 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:48:22,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:48:23,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:48:23,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:48:23,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 23:48:23,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:48:23,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-01-31 23:48:23,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:48:23,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-31 23:48:23,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:48:23,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:48:23,158 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:48:23,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1446924811] [2022-01-31 23:48:23,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1446924811] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:48:23,159 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:48:23,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-31 23:48:23,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388267178] [2022-01-31 23:48:23,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:48:23,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-31 23:48:23,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:48:23,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-31 23:48:23,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-01-31 23:48:23,161 INFO L87 Difference]: Start difference. First operand 1163 states and 1692 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) [2022-01-31 23:48:29,473 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:48:31,762 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:48:33,799 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:48:35,848 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:48:40,630 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:48:44,391 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:48:46,430 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:48:47,790 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:48:50,531 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:48:53,494 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:48:56,305 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:48:58,421 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:48:59,950 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:49:00,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:49:00,411 INFO L93 Difference]: Finished difference Result 2090 states and 3131 transitions. [2022-01-31 23:49:00,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-31 23:49:00,412 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 [2022-01-31 23:49:00,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:49:00,418 INFO L225 Difference]: With dead ends: 2090 [2022-01-31 23:49:00,418 INFO L226 Difference]: Without dead ends: 1446 [2022-01-31 23:49:00,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-31 23:49:00,421 INFO L933 BasicCegarLoop]: 750 mSDtfsCounter, 1772 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 2315 mSolverCounterSat, 742 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1831 SdHoareTripleChecker+Valid, 1177 SdHoareTripleChecker+Invalid, 3066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 742 IncrementalHoareTripleChecker+Valid, 2315 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.7s IncrementalHoareTripleChecker+Time [2022-01-31 23:49:00,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1831 Valid, 1177 Invalid, 3066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [742 Valid, 2315 Invalid, 9 Unknown, 0 Unchecked, 36.7s Time] [2022-01-31 23:49:00,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2022-01-31 23:49:00,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1160. [2022-01-31 23:49:00,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1160 states, 888 states have (on average 1.4031531531531531) internal successors, (1246), 889 states have internal predecessors, (1246), 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) [2022-01-31 23:49:00,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1160 states to 1160 states and 1681 transitions. [2022-01-31 23:49:00,628 INFO L78 Accepts]: Start accepts. Automaton has 1160 states and 1681 transitions. Word has length 53 [2022-01-31 23:49:00,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:49:00,629 INFO L470 AbstractCegarLoop]: Abstraction has 1160 states and 1681 transitions. [2022-01-31 23:49:00,629 INFO L471 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) [2022-01-31 23:49:00,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1160 states and 1681 transitions. [2022-01-31 23:49:00,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-31 23:49:00,632 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:49:00,632 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:49:00,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-31 23:49:00,633 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:49:00,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:49:00,633 INFO L85 PathProgramCache]: Analyzing trace with hash 865368045, now seen corresponding path program 1 times [2022-01-31 23:49:00,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:49:00,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [333187388] [2022-01-31 23:49:00,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:49:00,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:49:00,650 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:49:00,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:49:00,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:49:00,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:49:00,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 23:49:00,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:49:00,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-01-31 23:49:00,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:49:00,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-01-31 23:49:00,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:49:00,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-31 23:49:00,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:49:00,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:49:00,978 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:49:00,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [333187388] [2022-01-31 23:49:00,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [333187388] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:49:00,979 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:49:00,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-31 23:49:00,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806654614] [2022-01-31 23:49:00,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:49:00,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-31 23:49:00,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:49:00,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-31 23:49:00,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-01-31 23:49:00,980 INFO L87 Difference]: Start difference. First operand 1160 states and 1681 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) [2022-01-31 23:49:12,608 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 [] [2022-01-31 23:49:14,017 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:49:16,042 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:49:18,075 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:49:20,354 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:49:22,389 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:49:24,426 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:49:26,462 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:49:32,766 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:49:35,556 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:49:36,851 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:49:39,512 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:49:41,551 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:49:43,581 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:49:46,889 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:49:48,053 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:49:50,079 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:49:52,200 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:49:54,537 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:49:56,323 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:49:59,222 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:50:01,255 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 [] [2022-01-31 23:50:02,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:50:02,403 INFO L93 Difference]: Finished difference Result 1784 states and 2659 transitions. [2022-01-31 23:50:02,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-31 23:50:02,404 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 [2022-01-31 23:50:02,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:50:02,410 INFO L225 Difference]: With dead ends: 1784 [2022-01-31 23:50:02,410 INFO L226 Difference]: Without dead ends: 1724 [2022-01-31 23:50:02,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=174, Invalid=528, Unknown=0, NotChecked=0, Total=702 [2022-01-31 23:50:02,411 INFO L933 BasicCegarLoop]: 1022 mSDtfsCounter, 2892 mSDsluCounter, 2111 mSDsCounter, 0 mSdLazyCounter, 4880 mSolverCounterSat, 1388 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 58.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2925 SdHoareTripleChecker+Valid, 3133 SdHoareTripleChecker+Invalid, 6284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1388 IncrementalHoareTripleChecker+Valid, 4880 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60.1s IncrementalHoareTripleChecker+Time [2022-01-31 23:50:02,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2925 Valid, 3133 Invalid, 6284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1388 Valid, 4880 Invalid, 16 Unknown, 0 Unchecked, 60.1s Time] [2022-01-31 23:50:02,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1724 states. [2022-01-31 23:50:02,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1724 to 1224. [2022-01-31 23:50:02,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1224 states, 934 states have (on average 1.3972162740899357) internal successors, (1305), 934 states have internal predecessors, (1305), 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) [2022-01-31 23:50:02,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 1759 transitions. [2022-01-31 23:50:02,645 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 1759 transitions. Word has length 53 [2022-01-31 23:50:02,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:50:02,646 INFO L470 AbstractCegarLoop]: Abstraction has 1224 states and 1759 transitions. [2022-01-31 23:50:02,646 INFO L471 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) [2022-01-31 23:50:02,646 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 1759 transitions. [2022-01-31 23:50:02,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-31 23:50:02,649 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:50:02,649 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:50:02,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-31 23:50:02,649 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:50:02,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:50:02,650 INFO L85 PathProgramCache]: Analyzing trace with hash -418782008, now seen corresponding path program 1 times [2022-01-31 23:50:02,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:50:02,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32805769] [2022-01-31 23:50:02,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:50:02,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:50:02,661 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:50:02,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:50:02,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:50:02,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:50:02,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 23:50:02,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:50:02,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-01-31 23:50:02,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:50:02,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-01-31 23:50:02,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:50:02,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-31 23:50:02,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:50:02,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:50:02,948 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:50:02,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [32805769] [2022-01-31 23:50:02,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [32805769] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:50:02,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:50:02,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-31 23:50:02,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326298634] [2022-01-31 23:50:02,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:50:02,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-31 23:50:02,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:50:02,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-31 23:50:02,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-31 23:50:02,951 INFO L87 Difference]: Start difference. First operand 1224 states and 1759 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) [2022-01-31 23:50:11,129 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 [] [2022-01-31 23:50:13,175 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:50:15,402 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:50:18,115 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:50:21,993 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:50:24,095 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:50:25,958 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:50:27,999 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:50:30,410 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:50:32,502 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:50:34,746 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:50:35,993 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:50:38,024 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:50:42,253 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:50:43,544 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:50:44,641 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 [] [2022-01-31 23:50:44,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:50:44,965 INFO L93 Difference]: Finished difference Result 1541 states and 2308 transitions. [2022-01-31 23:50:44,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-31 23:50:44,965 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 [2022-01-31 23:50:44,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:50:44,971 INFO L225 Difference]: With dead ends: 1541 [2022-01-31 23:50:44,972 INFO L226 Difference]: Without dead ends: 1514 [2022-01-31 23:50:44,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-01-31 23:50:44,973 INFO L933 BasicCegarLoop]: 749 mSDtfsCounter, 2263 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 2461 mSolverCounterSat, 998 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2311 SdHoareTripleChecker+Valid, 1543 SdHoareTripleChecker+Invalid, 3469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 998 IncrementalHoareTripleChecker+Valid, 2461 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:50:44,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2311 Valid, 1543 Invalid, 3469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [998 Valid, 2461 Invalid, 10 Unknown, 0 Unchecked, 41.2s Time] [2022-01-31 23:50:44,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1514 states. [2022-01-31 23:50:45,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1514 to 1227. [2022-01-31 23:50:45,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1227 states, 937 states have (on average 1.3970117395944504) internal successors, (1309), 937 states have internal predecessors, (1309), 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) [2022-01-31 23:50:45,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 1763 transitions. [2022-01-31 23:50:45,256 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 1763 transitions. Word has length 55 [2022-01-31 23:50:45,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:50:45,257 INFO L470 AbstractCegarLoop]: Abstraction has 1227 states and 1763 transitions. [2022-01-31 23:50:45,258 INFO L471 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) [2022-01-31 23:50:45,258 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 1763 transitions. [2022-01-31 23:50:45,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-31 23:50:45,261 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:50:45,261 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:50:45,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-31 23:50:45,261 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:50:45,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:50:45,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1882040582, now seen corresponding path program 1 times [2022-01-31 23:50:45,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:50:45,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2007741919] [2022-01-31 23:50:45,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:50:45,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:50:45,274 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:50:45,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:50:45,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:50:45,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:50:45,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 23:50:45,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:50:45,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-01-31 23:50:45,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:50:45,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-01-31 23:50:45,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:50:45,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-31 23:50:45,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:50:45,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:50:45,640 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:50:45,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2007741919] [2022-01-31 23:50:45,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2007741919] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:50:45,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:50:45,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-31 23:50:45,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506046945] [2022-01-31 23:50:45,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:50:45,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-31 23:50:45,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:50:45,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-31 23:50:45,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-01-31 23:50:45,641 INFO L87 Difference]: Start difference. First operand 1227 states and 1763 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) [2022-01-31 23:50:53,595 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 [] [2022-01-31 23:50:54,905 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:50:56,227 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:50:58,781 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:51:02,021 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:51:08,703 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:51:11,351 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:51:14,028 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:51:16,654 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:51:18,888 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:51:20,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:51:20,343 INFO L93 Difference]: Finished difference Result 1576 states and 2354 transitions. [2022-01-31 23:51:20,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-31 23:51:20,344 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 [2022-01-31 23:51:20,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:51:20,350 INFO L225 Difference]: With dead ends: 1576 [2022-01-31 23:51:20,350 INFO L226 Difference]: Without dead ends: 1471 [2022-01-31 23:51:20,351 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2022-01-31 23:51:20,352 INFO L933 BasicCegarLoop]: 747 mSDtfsCounter, 2342 mSDsluCounter, 1243 mSDsCounter, 0 mSdLazyCounter, 3099 mSolverCounterSat, 1017 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2390 SdHoareTripleChecker+Valid, 1990 SdHoareTripleChecker+Invalid, 4121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1017 IncrementalHoareTripleChecker+Valid, 3099 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.6s IncrementalHoareTripleChecker+Time [2022-01-31 23:51:20,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2390 Valid, 1990 Invalid, 4121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1017 Valid, 3099 Invalid, 5 Unknown, 0 Unchecked, 33.6s Time] [2022-01-31 23:51:20,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1471 states. [2022-01-31 23:51:20,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1471 to 1189. [2022-01-31 23:51:20,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1189 states, 907 states have (on average 1.4046306504961412) internal successors, (1274), 914 states have internal predecessors, (1274), 190 states have call successors, (190), 83 states have call predecessors, (190), 91 states have return successors, (249), 191 states have call predecessors, (249), 182 states have call successors, (249) [2022-01-31 23:51:20,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1189 states to 1189 states and 1713 transitions. [2022-01-31 23:51:20,579 INFO L78 Accepts]: Start accepts. Automaton has 1189 states and 1713 transitions. Word has length 55 [2022-01-31 23:51:20,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:51:20,579 INFO L470 AbstractCegarLoop]: Abstraction has 1189 states and 1713 transitions. [2022-01-31 23:51:20,579 INFO L471 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) [2022-01-31 23:51:20,579 INFO L276 IsEmpty]: Start isEmpty. Operand 1189 states and 1713 transitions. [2022-01-31 23:51:20,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-31 23:51:20,581 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:51:20,582 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:51:20,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-31 23:51:20,582 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:51:20,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:51:20,582 INFO L85 PathProgramCache]: Analyzing trace with hash 2028733384, now seen corresponding path program 1 times [2022-01-31 23:51:20,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:51:20,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [497719631] [2022-01-31 23:51:20,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:51:20,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:51:20,593 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:51:20,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:51:20,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:51:20,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:51:20,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 23:51:20,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:51:20,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-01-31 23:51:20,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:51:20,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-01-31 23:51:20,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:51:20,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-31 23:51:20,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:51:20,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:51:20,936 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:51:20,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [497719631] [2022-01-31 23:51:20,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [497719631] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:51:20,936 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:51:20,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-31 23:51:20,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375402446] [2022-01-31 23:51:20,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:51:20,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-31 23:51:20,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:51:20,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-31 23:51:20,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-01-31 23:51:20,937 INFO L87 Difference]: Start difference. First operand 1189 states and 1713 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) [2022-01-31 23:51:24,865 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 [] [2022-01-31 23:51:31,811 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:51:33,848 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:51:37,082 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:51:39,060 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:51:41,000 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:51:42,369 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:51:44,656 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:51:45,877 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:51:52,662 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:51:55,158 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:51:58,029 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:52:00,064 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:52:02,096 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:52:05,158 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:52:06,998 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:52:08,147 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:52:10,321 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:52:12,857 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:52:18,694 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 [] [2022-01-31 23:52:19,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:52:19,102 INFO L93 Difference]: Finished difference Result 1827 states and 2721 transitions. [2022-01-31 23:52:19,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-31 23:52:19,103 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 [2022-01-31 23:52:19,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:52:19,108 INFO L225 Difference]: With dead ends: 1827 [2022-01-31 23:52:19,108 INFO L226 Difference]: Without dead ends: 1815 [2022-01-31 23:52:19,109 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2022-01-31 23:52:19,109 INFO L933 BasicCegarLoop]: 1030 mSDtfsCounter, 2924 mSDsluCounter, 1717 mSDsCounter, 0 mSdLazyCounter, 4748 mSolverCounterSat, 1295 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2975 SdHoareTripleChecker+Valid, 2747 SdHoareTripleChecker+Invalid, 6054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1295 IncrementalHoareTripleChecker+Valid, 4748 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.8s IncrementalHoareTripleChecker+Time [2022-01-31 23:52:19,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2975 Valid, 2747 Invalid, 6054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1295 Valid, 4748 Invalid, 11 Unknown, 0 Unchecked, 56.8s Time] [2022-01-31 23:52:19,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1815 states. [2022-01-31 23:52:19,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1815 to 1222. [2022-01-31 23:52:19,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1222 states, 933 states have (on average 1.397642015005359) internal successors, (1304), 940 states have internal predecessors, (1304), 190 states have call successors, (190), 83 states have call predecessors, (190), 98 states have return successors, (256), 198 states have call predecessors, (256), 182 states have call successors, (256) [2022-01-31 23:52:19,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 1750 transitions. [2022-01-31 23:52:19,385 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 1750 transitions. Word has length 55 [2022-01-31 23:52:19,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:52:19,385 INFO L470 AbstractCegarLoop]: Abstraction has 1222 states and 1750 transitions. [2022-01-31 23:52:19,385 INFO L471 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) [2022-01-31 23:52:19,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 1750 transitions. [2022-01-31 23:52:19,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-31 23:52:19,387 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:52:19,387 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:52:19,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-31 23:52:19,388 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:52:19,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:52:19,388 INFO L85 PathProgramCache]: Analyzing trace with hash 2028456554, now seen corresponding path program 1 times [2022-01-31 23:52:19,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:52:19,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1884357139] [2022-01-31 23:52:19,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:52:19,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:52:19,398 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:52:19,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:52:19,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:52:19,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:52:19,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 23:52:19,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:52:19,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-01-31 23:52:19,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:52:19,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-01-31 23:52:19,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:52:19,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-31 23:52:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:52:19,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:52:19,613 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:52:19,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1884357139] [2022-01-31 23:52:19,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1884357139] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:52:19,613 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:52:19,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-31 23:52:19,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624132180] [2022-01-31 23:52:19,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:52:19,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-31 23:52:19,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:52:19,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-31 23:52:19,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-01-31 23:52:19,615 INFO L87 Difference]: Start difference. First operand 1222 states and 1750 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) [2022-01-31 23:52:26,164 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 [] [2022-01-31 23:52:28,380 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:52:29,826 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:52:34,087 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:52:36,170 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:52:38,521 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:52:40,556 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:52:42,587 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:52:44,645 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:52:48,099 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:52:51,034 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:52:52,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:52:52,318 INFO L93 Difference]: Finished difference Result 1522 states and 2276 transitions. [2022-01-31 23:52:52,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 23:52:52,319 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 [2022-01-31 23:52:52,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:52:52,325 INFO L225 Difference]: With dead ends: 1522 [2022-01-31 23:52:52,325 INFO L226 Difference]: Without dead ends: 1496 [2022-01-31 23:52:52,325 INFO L932 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 [2022-01-31 23:52:52,326 INFO L933 BasicCegarLoop]: 770 mSDtfsCounter, 2732 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 1209 mSolverCounterSat, 1265 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2779 SdHoareTripleChecker+Valid, 1164 SdHoareTripleChecker+Invalid, 2484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1265 IncrementalHoareTripleChecker+Valid, 1209 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.0s IncrementalHoareTripleChecker+Time [2022-01-31 23:52:52,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2779 Valid, 1164 Invalid, 2484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1265 Valid, 1209 Invalid, 10 Unknown, 0 Unchecked, 32.0s Time] [2022-01-31 23:52:52,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2022-01-31 23:52:52,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1203. [2022-01-31 23:52:52,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 918 states have (on average 1.3965141612200436) internal successors, (1282), 924 states have internal predecessors, (1282), 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) [2022-01-31 23:52:52,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1724 transitions. [2022-01-31 23:52:52,639 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1724 transitions. Word has length 55 [2022-01-31 23:52:52,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:52:52,639 INFO L470 AbstractCegarLoop]: Abstraction has 1203 states and 1724 transitions. [2022-01-31 23:52:52,640 INFO L471 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) [2022-01-31 23:52:52,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1724 transitions. [2022-01-31 23:52:52,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-31 23:52:52,642 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:52:52,642 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:52:52,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-31 23:52:52,643 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:52:52,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:52:52,643 INFO L85 PathProgramCache]: Analyzing trace with hash -2042850020, now seen corresponding path program 1 times [2022-01-31 23:52:52,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:52:52,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1978114779] [2022-01-31 23:52:52,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:52:52,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:52:52,653 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:52:52,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:52:52,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:52:52,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:52:52,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 23:52:52,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:52:52,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-01-31 23:52:52,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:52:52,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-01-31 23:52:52,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:52:52,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-01-31 23:52:52,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:52:52,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:52:52,887 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:52:52,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1978114779] [2022-01-31 23:52:52,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1978114779] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:52:52,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:52:52,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-31 23:52:52,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910774458] [2022-01-31 23:52:52,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:52:52,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-31 23:52:52,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:52:52,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-31 23:52:52,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-01-31 23:52:52,889 INFO L87 Difference]: Start difference. First operand 1203 states and 1724 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) [2022-01-31 23:53:01,517 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:53:03,548 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:53:05,845 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:53:07,882 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:53:09,917 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:53:11,950 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:53:14,319 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:53:17,404 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:53:19,135 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:53:21,117 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:53:23,163 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:53:25,555 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:53:27,596 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:53:30,013 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:53:32,055 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:53:35,250 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:53:37,502 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:53:39,484 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:53:44,213 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:53:46,997 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:53:49,024 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:53:50,561 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:53:51,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:53:51,266 INFO L93 Difference]: Finished difference Result 2168 states and 3188 transitions. [2022-01-31 23:53:51,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-31 23:53:51,267 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 [2022-01-31 23:53:51,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:53:51,272 INFO L225 Difference]: With dead ends: 2168 [2022-01-31 23:53:51,272 INFO L226 Difference]: Without dead ends: 1552 [2022-01-31 23:53:51,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-01-31 23:53:51,277 INFO L933 BasicCegarLoop]: 876 mSDtfsCounter, 1106 mSDsluCounter, 984 mSDsCounter, 0 mSdLazyCounter, 3255 mSolverCounterSat, 492 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1165 SdHoareTripleChecker+Valid, 1860 SdHoareTripleChecker+Invalid, 3761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 492 IncrementalHoareTripleChecker+Valid, 3255 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 57.6s IncrementalHoareTripleChecker+Time [2022-01-31 23:53:51,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1165 Valid, 1860 Invalid, 3761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [492 Valid, 3255 Invalid, 14 Unknown, 0 Unchecked, 57.6s Time] [2022-01-31 23:53:51,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1552 states. [2022-01-31 23:53:51,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1552 to 1203. [2022-01-31 23:53:51,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 918 states have (on average 1.3954248366013071) internal successors, (1281), 924 states have internal predecessors, (1281), 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) [2022-01-31 23:53:51,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1723 transitions. [2022-01-31 23:53:51,572 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1723 transitions. Word has length 60 [2022-01-31 23:53:51,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:53:51,572 INFO L470 AbstractCegarLoop]: Abstraction has 1203 states and 1723 transitions. [2022-01-31 23:53:51,572 INFO L471 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) [2022-01-31 23:53:51,572 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1723 transitions. [2022-01-31 23:53:51,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-31 23:53:51,575 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:53:51,575 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:53:51,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-31 23:53:51,575 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:53:51,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:53:51,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1534939980, now seen corresponding path program 1 times [2022-01-31 23:53:51,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:53:51,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181403011] [2022-01-31 23:53:51,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:53:51,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:53:51,586 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:53:51,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:53:51,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:53:51,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:53:51,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 23:53:51,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:53:51,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-01-31 23:53:51,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:53:51,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-01-31 23:53:51,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:53:51,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-31 23:53:51,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:53:51,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:53:51,814 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:53:51,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181403011] [2022-01-31 23:53:51,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1181403011] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:53:51,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:53:51,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-31 23:53:51,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749143722] [2022-01-31 23:53:51,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:53:51,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-31 23:53:51,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:53:51,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-31 23:53:51,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-01-31 23:53:51,816 INFO L87 Difference]: Start difference. First operand 1203 states and 1723 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) [2022-01-31 23:53:59,207 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:54:01,249 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:54:03,481 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:54:05,514 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:54:09,149 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:54:11,899 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:54:14,000 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:54:15,836 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:54:17,308 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:54:20,555 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:54:22,738 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:54:25,429 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:54:28,672 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:54:31,008 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:54:32,278 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 [] [2022-01-31 23:54:32,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:54:32,518 INFO L93 Difference]: Finished difference Result 2675 states and 3932 transitions. [2022-01-31 23:54:32,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 23:54:32,519 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 [2022-01-31 23:54:32,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:54:32,526 INFO L225 Difference]: With dead ends: 2675 [2022-01-31 23:54:32,526 INFO L226 Difference]: Without dead ends: 1480 [2022-01-31 23:54:32,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-01-31 23:54:32,530 INFO L933 BasicCegarLoop]: 808 mSDtfsCounter, 1211 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 2339 mSolverCounterSat, 743 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1238 SdHoareTripleChecker+Valid, 1596 SdHoareTripleChecker+Invalid, 3091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 743 IncrementalHoareTripleChecker+Valid, 2339 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.0s IncrementalHoareTripleChecker+Time [2022-01-31 23:54:32,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1238 Valid, 1596 Invalid, 3091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [743 Valid, 2339 Invalid, 9 Unknown, 0 Unchecked, 40.0s Time] [2022-01-31 23:54:32,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1480 states. [2022-01-31 23:54:32,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1480 to 1206. [2022-01-31 23:54:32,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 921 states have (on average 1.3941368078175895) internal successors, (1284), 927 states have internal predecessors, (1284), 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) [2022-01-31 23:54:32,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 1726 transitions. [2022-01-31 23:54:32,844 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 1726 transitions. Word has length 56 [2022-01-31 23:54:32,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:54:32,844 INFO L470 AbstractCegarLoop]: Abstraction has 1206 states and 1726 transitions. [2022-01-31 23:54:32,844 INFO L471 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) [2022-01-31 23:54:32,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 1726 transitions. [2022-01-31 23:54:32,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-31 23:54:32,847 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:54:32,847 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:54:32,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-31 23:54:32,847 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:54:32,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:54:32,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1355294534, now seen corresponding path program 1 times [2022-01-31 23:54:32,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:54:32,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [230313138] [2022-01-31 23:54:32,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:54:32,868 INFO L92 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Could not compute Simultaneous Update! [2022-01-31 23:54:32,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:54:32,878 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:54:32,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:54:33,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:54:33,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:54:33,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-01-31 23:54:33,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:54:33,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-01-31 23:54:33,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:54:33,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-01-31 23:54:33,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:54:33,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-31 23:54:33,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:54:33,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:54:33,151 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:54:33,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [230313138] [2022-01-31 23:54:33,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [230313138] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:54:33,151 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:54:33,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-31 23:54:33,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127161243] [2022-01-31 23:54:33,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:54:33,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-31 23:54:33,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:54:33,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-31 23:54:33,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-31 23:54:33,153 INFO L87 Difference]: Start difference. First operand 1206 states and 1726 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 4 states have internal predecessors, (50), 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) [2022-01-31 23:54:41,169 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 [] [2022-01-31 23:54:43,204 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:54:45,454 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:54:47,497 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:54:51,783 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:54:54,003 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:54:55,841 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:54:58,111 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:55:01,509 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:55:04,517 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:55:06,548 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:55:09,078 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:55:12,269 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:55:12,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:55:12,481 INFO L93 Difference]: Finished difference Result 2683 states and 3940 transitions. [2022-01-31 23:55:12,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 23:55:12,481 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 4 states have internal predecessors, (50), 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 62 [2022-01-31 23:55:12,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:55:12,488 INFO L225 Difference]: With dead ends: 2683 [2022-01-31 23:55:12,488 INFO L226 Difference]: Without dead ends: 1486 [2022-01-31 23:55:12,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-01-31 23:55:12,491 INFO L933 BasicCegarLoop]: 809 mSDtfsCounter, 1222 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 2341 mSolverCounterSat, 752 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1249 SdHoareTripleChecker+Valid, 1600 SdHoareTripleChecker+Invalid, 3103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 752 IncrementalHoareTripleChecker+Valid, 2341 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.6s IncrementalHoareTripleChecker+Time [2022-01-31 23:55:12,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1249 Valid, 1600 Invalid, 3103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [752 Valid, 2341 Invalid, 10 Unknown, 0 Unchecked, 38.6s Time] [2022-01-31 23:55:12,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1486 states. [2022-01-31 23:55:12,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1486 to 1212. [2022-01-31 23:55:12,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1212 states, 927 states have (on average 1.3915857605177993) internal successors, (1290), 933 states have internal predecessors, (1290), 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) [2022-01-31 23:55:12,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 1732 transitions. [2022-01-31 23:55:12,777 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 1732 transitions. Word has length 62 [2022-01-31 23:55:12,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:55:12,778 INFO L470 AbstractCegarLoop]: Abstraction has 1212 states and 1732 transitions. [2022-01-31 23:55:12,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 4 states have internal predecessors, (50), 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) [2022-01-31 23:55:12,778 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 1732 transitions. [2022-01-31 23:55:12,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-31 23:55:12,780 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:55:12,780 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:55:12,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-31 23:55:12,780 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:55:12,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:55:12,780 INFO L85 PathProgramCache]: Analyzing trace with hash 953002048, now seen corresponding path program 2 times [2022-01-31 23:55:12,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:55:12,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842819518] [2022-01-31 23:55:12,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:55:12,782 INFO L92 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Could not compute Simultaneous Update! [2022-01-31 23:55:12,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:55:12,791 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:55:12,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:55:12,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:55:12,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:55:12,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-01-31 23:55:12,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:55:13,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 23:55:13,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:55:13,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-01-31 23:55:13,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:55:13,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-31 23:55:13,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:55:13,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:55:13,062 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:55:13,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [842819518] [2022-01-31 23:55:13,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [842819518] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:55:13,063 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:55:13,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-31 23:55:13,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395827314] [2022-01-31 23:55:13,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:55:13,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 23:55:13,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:55:13,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 23:55:13,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-01-31 23:55:13,064 INFO L87 Difference]: Start difference. First operand 1212 states and 1732 transitions. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 5 states have internal predecessors, (52), 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) [2022-01-31 23:55:20,445 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:55:21,911 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:55:24,109 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:55:28,882 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:55:30,148 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:55:32,420 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:55:34,458 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:55:37,743 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:55:39,767 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:55:41,393 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:55:43,535 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:55:45,849 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:55:46,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:55:46,373 INFO L93 Difference]: Finished difference Result 2693 states and 3950 transitions. [2022-01-31 23:55:46,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-31 23:55:46,374 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 5 states have internal predecessors, (52), 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 68 [2022-01-31 23:55:46,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:55:46,381 INFO L225 Difference]: With dead ends: 2693 [2022-01-31 23:55:46,381 INFO L226 Difference]: Without dead ends: 1492 [2022-01-31 23:55:46,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-01-31 23:55:46,385 INFO L933 BasicCegarLoop]: 809 mSDtfsCounter, 1238 mSDsluCounter, 770 mSDsCounter, 0 mSdLazyCounter, 1834 mSolverCounterSat, 765 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1265 SdHoareTripleChecker+Valid, 1579 SdHoareTripleChecker+Invalid, 2605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 765 IncrementalHoareTripleChecker+Valid, 1834 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.5s IncrementalHoareTripleChecker+Time [2022-01-31 23:55:46,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1265 Valid, 1579 Invalid, 2605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [765 Valid, 1834 Invalid, 6 Unknown, 0 Unchecked, 32.5s Time] [2022-01-31 23:55:46,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2022-01-31 23:55:46,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 1218. [2022-01-31 23:55:46,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1218 states, 933 states have (on average 1.3890675241157557) internal successors, (1296), 939 states have internal predecessors, (1296), 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) [2022-01-31 23:55:46,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1218 states to 1218 states and 1738 transitions. [2022-01-31 23:55:46,684 INFO L78 Accepts]: Start accepts. Automaton has 1218 states and 1738 transitions. Word has length 68 [2022-01-31 23:55:46,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:55:46,684 INFO L470 AbstractCegarLoop]: Abstraction has 1218 states and 1738 transitions. [2022-01-31 23:55:46,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 5 states have internal predecessors, (52), 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) [2022-01-31 23:55:46,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1218 states and 1738 transitions. [2022-01-31 23:55:46,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-31 23:55:46,687 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:55:46,687 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:55:46,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-31 23:55:46,687 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:55:46,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:55:46,687 INFO L85 PathProgramCache]: Analyzing trace with hash -855409850, now seen corresponding path program 3 times [2022-01-31 23:55:46,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:55:46,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1151647942] [2022-01-31 23:55:46,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:55:46,690 INFO L92 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Could not compute Simultaneous Update! [2022-01-31 23:55:46,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:55:46,698 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:55:46,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:55:46,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:55:46,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:55:46,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 23:55:46,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:55:46,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-31 23:55:46,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:55:46,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 23:55:46,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:55:46,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-31 23:55:46,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:55:46,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:55:46,995 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:55:46,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1151647942] [2022-01-31 23:55:46,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1151647942] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:55:46,996 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:55:46,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-31 23:55:46,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084001085] [2022-01-31 23:55:46,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:55:46,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-31 23:55:46,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:55:46,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-31 23:55:46,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-01-31 23:55:46,997 INFO L87 Difference]: Start difference. First operand 1218 states and 1738 transitions. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 6 states have internal predecessors, (54), 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) [2022-01-31 23:55:52,667 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:55:58,223 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:56:00,869 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:56:02,380 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:56:04,414 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:56:06,686 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:56:08,729 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:56:10,761 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:56:17,485 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:56:19,839 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:56:25,095 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:56:27,621 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:56:29,655 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:56:32,317 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:56:34,617 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:56:36,856 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:56:38,367 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:56:41,350 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:56:43,234 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:56:45,458 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:56:48,913 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 [] [2022-01-31 23:56:49,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:56:49,706 INFO L93 Difference]: Finished difference Result 2703 states and 3960 transitions. [2022-01-31 23:56:49,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-31 23:56:49,707 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 6 states have internal predecessors, (54), 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 74 [2022-01-31 23:56:49,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:56:49,712 INFO L225 Difference]: With dead ends: 2703 [2022-01-31 23:56:49,712 INFO L226 Difference]: Without dead ends: 1498 [2022-01-31 23:56:49,715 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-01-31 23:56:49,715 INFO L933 BasicCegarLoop]: 805 mSDtfsCounter, 732 mSDsluCounter, 1820 mSDsCounter, 0 mSdLazyCounter, 4952 mSolverCounterSat, 470 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 59.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 2625 SdHoareTripleChecker+Invalid, 5435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 470 IncrementalHoareTripleChecker+Valid, 4952 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 61.8s IncrementalHoareTripleChecker+Time [2022-01-31 23:56:49,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [759 Valid, 2625 Invalid, 5435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [470 Valid, 4952 Invalid, 13 Unknown, 0 Unchecked, 61.8s Time] [2022-01-31 23:56:49,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1498 states. [2022-01-31 23:56:50,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1498 to 1224. [2022-01-31 23:56:50,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1224 states, 939 states have (on average 1.3865814696485623) internal successors, (1302), 945 states have internal predecessors, (1302), 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) [2022-01-31 23:56:50,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 1744 transitions. [2022-01-31 23:56:50,073 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 1744 transitions. Word has length 74 [2022-01-31 23:56:50,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:56:50,073 INFO L470 AbstractCegarLoop]: Abstraction has 1224 states and 1744 transitions. [2022-01-31 23:56:50,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 6 states have internal predecessors, (54), 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) [2022-01-31 23:56:50,074 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 1744 transitions. [2022-01-31 23:56:50,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-31 23:56:50,075 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:56:50,076 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:56:50,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-31 23:56:50,076 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:56:50,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:56:50,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1821422028, now seen corresponding path program 4 times [2022-01-31 23:56:50,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:56:50,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1626383183] [2022-01-31 23:56:50,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:56:50,078 INFO L92 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Could not compute Simultaneous Update! [2022-01-31 23:56:50,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:56:50,087 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:56:50,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:56:50,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:56:50,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:56:50,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-31 23:56:50,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:56:50,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-31 23:56:50,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:56:50,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 23:56:50,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:56:50,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-31 23:56:50,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:56:50,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:56:50,423 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:56:50,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1626383183] [2022-01-31 23:56:50,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1626383183] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:56:50,423 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:56:50,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-31 23:56:50,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174131099] [2022-01-31 23:56:50,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:56:50,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-31 23:56:50,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:56:50,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-31 23:56:50,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-01-31 23:56:50,425 INFO L87 Difference]: Start difference. First operand 1224 states and 1744 transitions. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 7 states have internal predecessors, (56), 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) [2022-01-31 23:57:01,790 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 [] [2022-01-31 23:57:04,247 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:57:06,285 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:57:07,752 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:57:09,044 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:57:10,170 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:57:12,400 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:57:14,440 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:57:16,475 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:57:19,488 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:57:23,314 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:57:25,334 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:57:28,076 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:57:31,493 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:57:34,055 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:57:35,382 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:57:38,768 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:57:41,449 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:57:43,956 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []