/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-5d317bd [2022-03-19 13:32:01,907 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-19 13:32:01,908 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-19 13:32:01,935 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-19 13:32:01,936 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-19 13:32:01,937 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-19 13:32:01,937 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-19 13:32:01,938 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-19 13:32:01,939 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-19 13:32:01,940 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-19 13:32:01,941 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-19 13:32:01,941 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-19 13:32:01,941 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-19 13:32:01,942 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-19 13:32:01,943 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-19 13:32:01,943 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-19 13:32:01,944 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-19 13:32:01,946 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-19 13:32:01,948 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-19 13:32:01,949 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-19 13:32:01,950 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-19 13:32:01,953 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-19 13:32:01,953 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-19 13:32:01,954 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-19 13:32:01,954 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-19 13:32:01,956 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-19 13:32:01,960 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-19 13:32:01,961 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-19 13:32:01,969 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-19 13:32:01,970 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-03-19 13:32:01,978 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-19 13:32:01,979 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-19 13:32:01,979 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-19 13:32:01,979 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-19 13:32:01,979 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-19 13:32:01,980 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-19 13:32:01,980 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-19 13:32:01,980 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-19 13:32:01,980 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-19 13:32:01,980 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-19 13:32:01,980 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-19 13:32:01,981 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-19 13:32:01,981 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-19 13:32:01,981 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-19 13:32:01,981 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-19 13:32:01,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-19 13:32:01,981 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-19 13:32:01,981 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-19 13:32:01,981 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-19 13:32:01,981 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-19 13:32:01,981 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-19 13:32:01,981 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-03-19 13:32:01,982 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-19 13:32:02,136 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-19 13:32:02,155 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-19 13:32:02,157 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-19 13:32:02,157 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-19 13:32:02,159 INFO L275 PluginConnector]: CDTParser initialized [2022-03-19 13:32:02,160 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers/cdaudio.i.cil-1.c [2022-03-19 13:32:02,204 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c088995ef/5403a86e8b834c48950dc83e1ec0fb79/FLAG848f507d7 [2022-03-19 13:32:02,757 INFO L306 CDTParser]: Found 1 translation units. [2022-03-19 13:32:02,758 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/cdaudio.i.cil-1.c [2022-03-19 13:32:02,796 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c088995ef/5403a86e8b834c48950dc83e1ec0fb79/FLAG848f507d7 [2022-03-19 13:32:02,954 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c088995ef/5403a86e8b834c48950dc83e1ec0fb79 [2022-03-19 13:32:02,956 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-19 13:32:02,957 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-19 13:32:02,959 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-19 13:32:02,959 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-19 13:32:02,963 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-19 13:32:02,963 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 01:32:02" (1/1) ... [2022-03-19 13:32:02,964 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24cd2872 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:32:02, skipping insertion in model container [2022-03-19 13:32:02,964 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 01:32:02" (1/1) ... [2022-03-19 13:32:02,968 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-19 13:32:03,038 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-19 13:32:03,483 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/cdaudio.i.cil-1.c[90162,90175] [2022-03-19 13:32:04,053 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-19 13:32:04,060 INFO L203 MainTranslator]: Completed pre-run [2022-03-19 13:32:04,113 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/cdaudio.i.cil-1.c[90162,90175] [2022-03-19 13:32:04,340 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-19 13:32:04,359 INFO L208 MainTranslator]: Completed translation [2022-03-19 13:32:04,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:32:04 WrapperNode [2022-03-19 13:32:04,360 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-19 13:32:04,361 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-19 13:32:04,361 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-19 13:32:04,361 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-19 13:32:04,369 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:32:04" (1/1) ... [2022-03-19 13:32:04,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:32:04" (1/1) ... [2022-03-19 13:32:04,427 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:32:04" (1/1) ... [2022-03-19 13:32:04,427 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:32:04" (1/1) ... [2022-03-19 13:32:04,554 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:32:04" (1/1) ... [2022-03-19 13:32:04,576 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:32:04" (1/1) ... [2022-03-19 13:32:04,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:32:04" (1/1) ... [2022-03-19 13:32:04,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-19 13:32:04,627 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-19 13:32:04,627 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-19 13:32:04,627 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-19 13:32:04,628 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:32:04" (1/1) ... [2022-03-19 13:32:04,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-19 13:32:04,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 13:32:04,648 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-19 13:32:04,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-19 13:32:04,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-19 13:32:04,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-19 13:32:04,691 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-19 13:32:04,691 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlWriteRegistryValue [2022-03-19 13:32:04,691 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedIncrement [2022-03-19 13:32:04,691 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedDecrement [2022-03-19 13:32:04,691 INFO L138 BoogieDeclarations]: Found implementation of procedure MmLockPagableDataSection [2022-03-19 13:32:04,691 INFO L138 BoogieDeclarations]: Found implementation of procedure IoOpenDeviceRegistryKey [2022-03-19 13:32:04,691 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-03-19 13:32:04,691 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-03-19 13:32:04,692 INFO L138 BoogieDeclarations]: Found implementation of procedure SendSrbSynchronous [2022-03-19 13:32:04,692 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioAddDevice [2022-03-19 13:32:04,692 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSignalCompletion [2022-03-19 13:32:04,693 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioStartDevice [2022-03-19 13:32:04,693 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPnp [2022-03-19 13:32:04,694 INFO L138 BoogieDeclarations]: Found implementation of procedure DriverEntry [2022-03-19 13:32:04,694 INFO L138 BoogieDeclarations]: Found implementation of procedure NecSupportNeeded [2022-03-19 13:32:04,694 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioReadWrite [2022-03-19 13:32:04,694 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioDeviceControl [2022-03-19 13:32:04,694 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSendToNextDriver [2022-03-19 13:32:04,694 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioIsPlayActive [2022-03-19 13:32:04,694 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioNECDeviceControl [2022-03-19 13:32:04,694 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPioneerDeviceControl [2022-03-19 13:32:04,694 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioDenonDeviceControl [2022-03-19 13:32:04,694 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioHitachiSendPauseCommand [2022-03-19 13:32:04,695 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioHitachiDeviceControl [2022-03-19 13:32:04,695 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio535DeviceControl [2022-03-19 13:32:04,695 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio435DeviceControl [2022-03-19 13:32:04,695 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioAtapiDeviceControl [2022-03-19 13:32:04,695 INFO L138 BoogieDeclarations]: Found implementation of procedure HpCdrProcessLastSession [2022-03-19 13:32:04,695 INFO L138 BoogieDeclarations]: Found implementation of procedure HPCdrCompletion [2022-03-19 13:32:04,695 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioHPCdrDeviceControl [2022-03-19 13:32:04,695 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioForwardIrpSynchronous [2022-03-19 13:32:04,695 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioUnload [2022-03-19 13:32:04,695 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPower [2022-03-19 13:32:04,695 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-03-19 13:32:04,695 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-19 13:32:04,695 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_malloc [2022-03-19 13:32:04,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAcquireFastMutex [2022-03-19 13:32:04,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ExReleaseFastMutex [2022-03-19 13:32:04,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2022-03-19 13:32:04,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ExFreePool [2022-03-19 13:32:04,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertHeadList [2022-03-19 13:32:04,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertTailList [2022-03-19 13:32:04,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedRemoveHeadList [2022-03-19 13:32:04,696 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAllocateMdl [2022-03-19 13:32:04,696 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAttachDeviceToDeviceStack [2022-03-19 13:32:04,696 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildAsynchronousFsdRequest [2022-03-19 13:32:04,696 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2022-03-19 13:32:04,696 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateDevice [2022-03-19 13:32:04,696 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateSymbolicLink [2022-03-19 13:32:04,696 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteDevice [2022-03-19 13:32:04,696 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2022-03-19 13:32:04,696 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDetachDevice [2022-03-19 13:32:04,696 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeIrp [2022-03-19 13:32:04,696 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeMdl [2022-03-19 13:32:04,696 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2022-03-19 13:32:04,696 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2022-03-19 13:32:04,697 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2022-03-19 13:32:04,697 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReleaseCancelSpinLock [2022-03-19 13:32:04,697 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-03-19 13:32:04,697 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetHardErrorOrVerifyDevice [2022-03-19 13:32:04,697 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-03-19 13:32:04,697 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-03-19 13:32:04,697 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-03-19 13:32:04,697 INFO L138 BoogieDeclarations]: Found implementation of procedure KeAcquireSpinLockRaiseToDpc [2022-03-19 13:32:04,697 INFO L138 BoogieDeclarations]: Found implementation of procedure KeDelayExecutionThread [2022-03-19 13:32:04,697 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeEvent [2022-03-19 13:32:04,697 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSemaphore [2022-03-19 13:32:04,697 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSpinLock [2022-03-19 13:32:04,697 INFO L138 BoogieDeclarations]: Found implementation of procedure KeReleaseSemaphore [2022-03-19 13:32:04,698 INFO L138 BoogieDeclarations]: Found implementation of procedure KfReleaseSpinLock [2022-03-19 13:32:04,698 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-03-19 13:32:04,698 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-03-19 13:32:04,698 INFO L138 BoogieDeclarations]: Found implementation of procedure MmAllocateContiguousMemory [2022-03-19 13:32:04,698 INFO L138 BoogieDeclarations]: Found implementation of procedure MmFreeContiguousMemory [2022-03-19 13:32:04,698 INFO L138 BoogieDeclarations]: Found implementation of procedure MmMapLockedPagesSpecifyCache [2022-03-19 13:32:04,698 INFO L138 BoogieDeclarations]: Found implementation of procedure MmPageEntireDriver [2022-03-19 13:32:04,698 INFO L138 BoogieDeclarations]: Found implementation of procedure MmResetDriverPaging [2022-03-19 13:32:04,698 INFO L138 BoogieDeclarations]: Found implementation of procedure MmUnlockPages [2022-03-19 13:32:04,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2022-03-19 13:32:04,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ObfDereferenceObject [2022-03-19 13:32:04,699 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-03-19 13:32:04,699 INFO L138 BoogieDeclarations]: Found implementation of procedure PoStartNextPowerIrp [2022-03-19 13:32:04,700 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2022-03-19 13:32:04,700 INFO L138 BoogieDeclarations]: Found implementation of procedure PsTerminateSystemThread [2022-03-19 13:32:04,700 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlAnsiStringToUnicodeString [2022-03-19 13:32:04,700 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCompareMemory [2022-03-19 13:32:04,700 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCopyUnicodeString [2022-03-19 13:32:04,701 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlDeleteRegistryValue [2022-03-19 13:32:04,701 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlFreeUnicodeString [2022-03-19 13:32:04,701 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitString [2022-03-19 13:32:04,701 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitUnicodeString [2022-03-19 13:32:04,701 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlQueryRegistryValues [2022-03-19 13:32:04,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-03-19 13:32:04,701 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-03-19 13:32:04,701 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-03-19 13:32:04,701 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-19 13:32:04,701 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-19 13:32:04,701 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-19 13:32:04,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-19 13:32:04,701 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-03-19 13:32:04,701 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-19 13:32:04,701 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-03-19 13:32:04,701 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2022-03-19 13:32:04,702 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-03-19 13:32:04,702 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2022-03-19 13:32:04,702 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-03-19 13:32:04,702 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2022-03-19 13:32:04,702 INFO L130 BoogieDeclarations]: Found specification of procedure RtlQueryRegistryValues [2022-03-19 13:32:04,702 INFO L130 BoogieDeclarations]: Found specification of procedure RtlWriteRegistryValue [2022-03-19 13:32:04,702 INFO L130 BoogieDeclarations]: Found specification of procedure RtlDeleteRegistryValue [2022-03-19 13:32:04,702 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitString [2022-03-19 13:32:04,703 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitUnicodeString [2022-03-19 13:32:04,703 INFO L130 BoogieDeclarations]: Found specification of procedure RtlAnsiStringToUnicodeString [2022-03-19 13:32:04,703 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCopyUnicodeString [2022-03-19 13:32:04,703 INFO L130 BoogieDeclarations]: Found specification of procedure RtlFreeUnicodeString [2022-03-19 13:32:04,703 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCompareMemory [2022-03-19 13:32:04,704 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedIncrement [2022-03-19 13:32:04,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-19 13:32:04,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-19 13:32:04,704 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedDecrement [2022-03-19 13:32:04,704 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeEvent [2022-03-19 13:32:04,704 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-03-19 13:32:04,704 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSemaphore [2022-03-19 13:32:04,704 INFO L130 BoogieDeclarations]: Found specification of procedure KeReleaseSemaphore [2022-03-19 13:32:04,704 INFO L130 BoogieDeclarations]: Found specification of procedure KeDelayExecutionThread [2022-03-19 13:32:04,704 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-03-19 13:32:04,704 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSpinLock [2022-03-19 13:32:04,704 INFO L130 BoogieDeclarations]: Found specification of procedure KfReleaseSpinLock [2022-03-19 13:32:04,705 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2022-03-19 13:32:04,705 INFO L130 BoogieDeclarations]: Found specification of procedure ExFreePool [2022-03-19 13:32:04,705 INFO L130 BoogieDeclarations]: Found specification of procedure ExAcquireFastMutex [2022-03-19 13:32:04,705 INFO L130 BoogieDeclarations]: Found specification of procedure ExReleaseFastMutex [2022-03-19 13:32:04,705 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertHeadList [2022-03-19 13:32:04,705 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertTailList [2022-03-19 13:32:04,705 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedRemoveHeadList [2022-03-19 13:32:04,705 INFO L130 BoogieDeclarations]: Found specification of procedure MmUnlockPages [2022-03-19 13:32:04,706 INFO L130 BoogieDeclarations]: Found specification of procedure MmMapLockedPagesSpecifyCache [2022-03-19 13:32:04,706 INFO L130 BoogieDeclarations]: Found specification of procedure MmAllocateContiguousMemory [2022-03-19 13:32:04,707 INFO L130 BoogieDeclarations]: Found specification of procedure MmFreeContiguousMemory [2022-03-19 13:32:04,707 INFO L130 BoogieDeclarations]: Found specification of procedure MmLockPagableDataSection [2022-03-19 13:32:04,707 INFO L130 BoogieDeclarations]: Found specification of procedure MmResetDriverPaging [2022-03-19 13:32:04,707 INFO L130 BoogieDeclarations]: Found specification of procedure MmPageEntireDriver [2022-03-19 13:32:04,707 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2022-03-19 13:32:04,707 INFO L130 BoogieDeclarations]: Found specification of procedure PsTerminateSystemThread [2022-03-19 13:32:04,707 INFO L130 BoogieDeclarations]: Found specification of procedure IoAllocateMdl [2022-03-19 13:32:04,707 INFO L130 BoogieDeclarations]: Found specification of procedure IoAttachDeviceToDeviceStack [2022-03-19 13:32:04,707 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildAsynchronousFsdRequest [2022-03-19 13:32:04,707 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2022-03-19 13:32:04,707 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-03-19 13:32:04,707 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-03-19 13:32:04,707 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateDevice [2022-03-19 13:32:04,707 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateSymbolicLink [2022-03-19 13:32:04,707 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteDevice [2022-03-19 13:32:04,707 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2022-03-19 13:32:04,707 INFO L130 BoogieDeclarations]: Found specification of procedure IoDetachDevice [2022-03-19 13:32:04,708 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeIrp [2022-03-19 13:32:04,708 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeMdl [2022-03-19 13:32:04,708 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2022-03-19 13:32:04,708 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2022-03-19 13:32:04,708 INFO L130 BoogieDeclarations]: Found specification of procedure IoReleaseCancelSpinLock [2022-03-19 13:32:04,708 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetHardErrorOrVerifyDevice [2022-03-19 13:32:04,708 INFO L130 BoogieDeclarations]: Found specification of procedure IoOpenDeviceRegistryKey [2022-03-19 13:32:04,708 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2022-03-19 13:32:04,708 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-03-19 13:32:04,708 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-03-19 13:32:04,708 INFO L130 BoogieDeclarations]: Found specification of procedure PoStartNextPowerIrp [2022-03-19 13:32:04,708 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2022-03-19 13:32:04,708 INFO L130 BoogieDeclarations]: Found specification of procedure ObfDereferenceObject [2022-03-19 13:32:04,708 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-03-19 13:32:04,708 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-03-19 13:32:04,708 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-03-19 13:32:04,708 INFO L130 BoogieDeclarations]: Found specification of procedure DriverEntry [2022-03-19 13:32:04,708 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioReadWrite [2022-03-19 13:32:04,708 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioDeviceControl [2022-03-19 13:32:04,709 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSendToNextDriver [2022-03-19 13:32:04,709 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioIsPlayActive [2022-03-19 13:32:04,709 INFO L130 BoogieDeclarations]: Found specification of procedure NecSupportNeeded [2022-03-19 13:32:04,709 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioNECDeviceControl [2022-03-19 13:32:04,709 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPioneerDeviceControl [2022-03-19 13:32:04,709 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioDenonDeviceControl [2022-03-19 13:32:04,709 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioHitachiSendPauseCommand [2022-03-19 13:32:04,709 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioHitachiDeviceControl [2022-03-19 13:32:04,709 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio535DeviceControl [2022-03-19 13:32:04,709 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio435DeviceControl [2022-03-19 13:32:04,709 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioAtapiDeviceControl [2022-03-19 13:32:04,709 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioHPCdrDeviceControl [2022-03-19 13:32:04,709 INFO L130 BoogieDeclarations]: Found specification of procedure HpCdrProcessLastSession [2022-03-19 13:32:04,709 INFO L130 BoogieDeclarations]: Found specification of procedure HPCdrCompletion [2022-03-19 13:32:04,709 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPower [2022-03-19 13:32:04,709 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioForwardIrpSynchronous [2022-03-19 13:32:04,709 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioUnload [2022-03-19 13:32:04,709 INFO L130 BoogieDeclarations]: Found specification of procedure SendSrbSynchronous [2022-03-19 13:32:04,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-19 13:32:04,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-19 13:32:04,709 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioAddDevice [2022-03-19 13:32:04,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-03-19 13:32:04,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-03-19 13:32:04,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-03-19 13:32:04,710 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSignalCompletion [2022-03-19 13:32:04,710 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioStartDevice [2022-03-19 13:32:04,710 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPnp [2022-03-19 13:32:04,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-03-19 13:32:04,710 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-03-19 13:32:04,710 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-19 13:32:04,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-03-19 13:32:04,710 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_malloc [2022-03-19 13:32:04,710 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-03-19 13:32:04,710 INFO L130 BoogieDeclarations]: Found specification of procedure KeAcquireSpinLockRaiseToDpc [2022-03-19 13:32:04,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-19 13:32:04,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-19 13:32:04,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-19 13:32:04,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-03-19 13:32:04,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-03-19 13:32:04,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-03-19 13:32:04,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-03-19 13:32:05,126 INFO L234 CfgBuilder]: Building ICFG [2022-03-19 13:32:05,128 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-19 13:32:05,155 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:32:05,179 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 13:32:05,179 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 13:32:05,179 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:32:05,184 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 13:32:05,184 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 13:32:05,189 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:32:05,206 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 13:32:05,206 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 13:32:05,207 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:32:05,246 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 13:32:05,246 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 13:32:05,248 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:32:09,494 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume !false; [2022-03-19 13:32:09,494 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume false; [2022-03-19 13:32:09,505 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:32:09,510 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 13:32:09,510 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 13:32:09,510 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:32:09,514 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 13:32:09,514 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 13:32:09,515 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:32:09,522 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 13:32:09,522 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 13:32:09,522 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:32:09,529 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 13:32:09,529 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 13:32:09,531 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:32:13,298 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2022-03-19 13:32:13,298 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2022-03-19 13:32:13,326 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:32:13,439 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##39: assume false; [2022-03-19 13:32:13,439 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##40: assume !false; [2022-03-19 13:32:13,443 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:32:13,451 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 13:32:13,451 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 13:32:13,451 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:32:13,461 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2022-03-19 13:32:13,461 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2022-03-19 13:32:13,462 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:32:13,464 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 13:32:13,464 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 13:32:13,464 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:32:13,467 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 13:32:13,467 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 13:32:13,475 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:32:13,478 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 13:32:13,478 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 13:32:13,479 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:32:13,481 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 13:32:13,482 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 13:32:13,722 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:32:15,302 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2022-03-19 13:32:15,303 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2022-03-19 13:32:15,309 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:32:18,651 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume false; [2022-03-19 13:32:18,652 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##22: assume !false; [2022-03-19 13:32:18,656 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:32:18,673 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-03-19 13:32:18,673 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-03-19 13:32:18,703 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:32:18,705 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 13:32:18,705 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 13:32:18,728 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:32:18,770 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##32: assume false; [2022-03-19 13:32:18,770 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##33: assume !false; [2022-03-19 13:32:18,872 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:32:18,876 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 13:32:18,876 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 13:32:18,972 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:32:18,975 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 13:32:18,975 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 13:32:18,975 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:32:22,961 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume !false; [2022-03-19 13:32:22,961 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume false; [2022-03-19 13:32:22,964 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:32:22,981 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2022-03-19 13:32:22,981 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2022-03-19 13:32:22,987 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:32:22,995 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-03-19 13:32:22,995 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-03-19 13:32:23,008 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:32:23,019 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 13:32:23,019 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 13:32:23,661 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:32:23,687 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2022-03-19 13:32:23,687 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2022-03-19 13:32:23,687 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L3709: #res := 0; [2022-03-19 13:32:23,688 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:32:23,691 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 13:32:23,691 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 13:32:23,726 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:32:28,117 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2022-03-19 13:32:28,117 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2022-03-19 13:32:28,164 INFO L275 CfgBuilder]: Performing block encoding [2022-03-19 13:32:28,174 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-19 13:32:28,174 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2022-03-19 13:32:28,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 01:32:28 BoogieIcfgContainer [2022-03-19 13:32:28,177 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-19 13:32:28,178 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-19 13:32:28,178 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-19 13:32:28,180 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-19 13:32:28,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.03 01:32:02" (1/3) ... [2022-03-19 13:32:28,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56c5b99d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 01:32:28, skipping insertion in model container [2022-03-19 13:32:28,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:32:04" (2/3) ... [2022-03-19 13:32:28,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56c5b99d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 01:32:28, skipping insertion in model container [2022-03-19 13:32:28,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 01:32:28" (3/3) ... [2022-03-19 13:32:28,181 INFO L111 eAbstractionObserver]: Analyzing ICFG cdaudio.i.cil-1.c [2022-03-19 13:32:28,184 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-19 13:32:28,185 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-19 13:32:28,211 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-19 13:32:28,215 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-19 13:32:28,215 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-19 13:32:28,243 INFO L276 IsEmpty]: Start isEmpty. Operand has 1261 states, 960 states have (on average 1.5177083333333334) internal successors, (1457), 990 states have internal predecessors, (1457), 248 states have call successors, (248), 43 states have call predecessors, (248), 43 states have return successors, (248), 236 states have call predecessors, (248), 248 states have call successors, (248) [2022-03-19 13:32:28,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-03-19 13:32:28,249 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:32:28,249 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:32:28,250 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:32:28,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:32:28,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1165007651, now seen corresponding path program 1 times [2022-03-19 13:32:28,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:32:28,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [518399419] [2022-03-19 13:32:28,264 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:32:28,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1165007651, now seen corresponding path program 2 times [2022-03-19 13:32:28,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:32:28,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231799641] [2022-03-19 13:32:28,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:32:28,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:32:28,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:32:28,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:32:28,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:32:28,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 13:32:28,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:32:28,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:32:28,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:32:28,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231799641] [2022-03-19 13:32:28,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231799641] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:32:28,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:32:28,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:32:28,726 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:32:28,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [518399419] [2022-03-19 13:32:28,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [518399419] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:32:28,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:32:28,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:32:28,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471550531] [2022-03-19 13:32:28,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:32:28,731 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:32:28,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:32:28,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:32:28,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:32:28,755 INFO L87 Difference]: Start difference. First operand has 1261 states, 960 states have (on average 1.5177083333333334) internal successors, (1457), 990 states have internal predecessors, (1457), 248 states have call successors, (248), 43 states have call predecessors, (248), 43 states have return successors, (248), 236 states have call predecessors, (248), 248 states have call successors, (248) Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-03-19 13:32:33,170 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:32:35,960 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:32:40,011 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:32:41,507 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:32:43,528 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:32:45,248 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:32:47,561 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:32:49,579 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:32:51,610 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:32:53,784 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:32:55,012 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:32:55,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:32:55,319 INFO L93 Difference]: Finished difference Result 1537 states and 2438 transitions. [2022-03-19 13:32:55,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-19 13:32:55,321 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2022-03-19 13:32:55,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:32:55,336 INFO L225 Difference]: With dead ends: 1537 [2022-03-19 13:32:55,336 INFO L226 Difference]: Without dead ends: 842 [2022-03-19 13:32:55,345 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-19 13:32:55,350 INFO L912 BasicCegarLoop]: 930 mSDtfsCounter, 484 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 1973 mSolverCounterSat, 187 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 1302 SdHoareTripleChecker+Invalid, 2167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 1973 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.2s IncrementalHoareTripleChecker+Time [2022-03-19 13:32:55,351 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [508 Valid, 1302 Invalid, 2167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 1973 Invalid, 7 Unknown, 0 Unchecked, 26.2s Time] [2022-03-19 13:32:55,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2022-03-19 13:32:55,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 679. [2022-03-19 13:32:55,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 510 states have (on average 1.4588235294117646) internal successors, (744), 527 states have internal predecessors, (744), 132 states have call successors, (132), 38 states have call predecessors, (132), 36 states have return successors, (115), 115 states have call predecessors, (115), 115 states have call successors, (115) [2022-03-19 13:32:55,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 991 transitions. [2022-03-19 13:32:55,464 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 991 transitions. Word has length 26 [2022-03-19 13:32:55,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:32:55,465 INFO L478 AbstractCegarLoop]: Abstraction has 679 states and 991 transitions. [2022-03-19 13:32:55,465 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-03-19 13:32:55,465 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 991 transitions. [2022-03-19 13:32:55,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-19 13:32:55,466 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:32:55,466 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:32:55,466 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-19 13:32:55,466 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:32:55,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:32:55,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1118603387, now seen corresponding path program 1 times [2022-03-19 13:32:55,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:32:55,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [334945046] [2022-03-19 13:32:55,468 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:32:55,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1118603387, now seen corresponding path program 2 times [2022-03-19 13:32:55,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:32:55,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429751220] [2022-03-19 13:32:55,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:32:55,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:32:55,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:32:55,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:32:55,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:32:55,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 13:32:55,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:32:55,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 13:32:55,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:32:55,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:32:55,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:32:55,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429751220] [2022-03-19 13:32:55,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429751220] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:32:55,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:32:55,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-19 13:32:55,683 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:32:55,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [334945046] [2022-03-19 13:32:55,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [334945046] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:32:55,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:32:55,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-19 13:32:55,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107456089] [2022-03-19 13:32:55,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:32:55,684 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-19 13:32:55,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:32:55,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-19 13:32:55,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-19 13:32:55,685 INFO L87 Difference]: Start difference. First operand 679 states and 991 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-19 13:33:00,193 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:33:02,216 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:33:05,083 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:33:07,110 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:33:09,345 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:33:10,907 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:33:13,245 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:33:14,958 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:33:15,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:33:15,935 INFO L93 Difference]: Finished difference Result 1457 states and 2151 transitions. [2022-03-19 13:33:15,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-19 13:33:15,936 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 31 [2022-03-19 13:33:15,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:33:15,942 INFO L225 Difference]: With dead ends: 1457 [2022-03-19 13:33:15,942 INFO L226 Difference]: Without dead ends: 1180 [2022-03-19 13:33:15,943 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-03-19 13:33:15,944 INFO L912 BasicCegarLoop]: 1194 mSDtfsCounter, 1965 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 1763 mSolverCounterSat, 573 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2003 SdHoareTripleChecker+Valid, 1912 SdHoareTripleChecker+Invalid, 2341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 573 IncrementalHoareTripleChecker+Valid, 1763 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.0s IncrementalHoareTripleChecker+Time [2022-03-19 13:33:15,944 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2003 Valid, 1912 Invalid, 2341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [573 Valid, 1763 Invalid, 5 Unknown, 0 Unchecked, 20.0s Time] [2022-03-19 13:33:15,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2022-03-19 13:33:16,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 991. [2022-03-19 13:33:16,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 756 states have (on average 1.42989417989418) internal successors, (1081), 760 states have internal predecessors, (1081), 167 states have call successors, (167), 58 states have call predecessors, (167), 67 states have return successors, (200), 174 states have call predecessors, (200), 154 states have call successors, (200) [2022-03-19 13:33:16,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1448 transitions. [2022-03-19 13:33:16,014 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1448 transitions. Word has length 31 [2022-03-19 13:33:16,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:33:16,014 INFO L478 AbstractCegarLoop]: Abstraction has 991 states and 1448 transitions. [2022-03-19 13:33:16,015 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-19 13:33:16,015 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1448 transitions. [2022-03-19 13:33:16,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-03-19 13:33:16,016 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:33:16,016 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:33:16,016 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-19 13:33:16,016 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:33:16,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:33:16,017 INFO L85 PathProgramCache]: Analyzing trace with hash 425780201, now seen corresponding path program 1 times [2022-03-19 13:33:16,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:33:16,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1580630572] [2022-03-19 13:33:16,017 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:33:16,017 INFO L85 PathProgramCache]: Analyzing trace with hash 425780201, now seen corresponding path program 2 times [2022-03-19 13:33:16,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:33:16,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766824492] [2022-03-19 13:33:16,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:33:16,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:33:16,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:33:16,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:33:16,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:33:16,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 13:33:16,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:33:16,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 13:33:16,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:33:16,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:33:16,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:33:16,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766824492] [2022-03-19 13:33:16,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766824492] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:33:16,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:33:16,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-19 13:33:16,190 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:33:16,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1580630572] [2022-03-19 13:33:16,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1580630572] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:33:16,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:33:16,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-19 13:33:16,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687288581] [2022-03-19 13:33:16,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:33:16,191 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-19 13:33:16,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:33:16,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-19 13:33:16,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-19 13:33:16,191 INFO L87 Difference]: Start difference. First operand 991 states and 1448 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-19 13:33:22,380 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:33:24,990 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:33:26,803 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:33:28,418 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:33:29,758 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:33:31,707 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:33:33,936 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:33:36,171 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:33:37,259 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:33:39,389 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:33:41,116 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:33:43,137 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:33:45,522 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:33:48,313 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:33:49,956 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:33:52,297 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:33:55,017 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:33:56,120 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:33:56,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:33:56,659 INFO L93 Difference]: Finished difference Result 2293 states and 3447 transitions. [2022-03-19 13:33:56,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-19 13:33:56,661 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2022-03-19 13:33:56,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:33:56,667 INFO L225 Difference]: With dead ends: 2293 [2022-03-19 13:33:56,667 INFO L226 Difference]: Without dead ends: 1837 [2022-03-19 13:33:56,668 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-03-19 13:33:56,669 INFO L912 BasicCegarLoop]: 1375 mSDtfsCounter, 1087 mSDsluCounter, 798 mSDsCounter, 0 mSdLazyCounter, 3251 mSolverCounterSat, 292 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1139 SdHoareTripleChecker+Valid, 2173 SdHoareTripleChecker+Invalid, 3552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 3251 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.1s IncrementalHoareTripleChecker+Time [2022-03-19 13:33:56,669 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1139 Valid, 2173 Invalid, 3552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 3251 Invalid, 9 Unknown, 0 Unchecked, 40.1s Time] [2022-03-19 13:33:56,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1837 states. [2022-03-19 13:33:56,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1837 to 1172. [2022-03-19 13:33:56,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1172 states, 892 states have (on average 1.4204035874439462) internal successors, (1267), 895 states have internal predecessors, (1267), 197 states have call successors, (197), 73 states have call predecessors, (197), 82 states have return successors, (269), 205 states have call predecessors, (269), 184 states have call successors, (269) [2022-03-19 13:33:56,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1733 transitions. [2022-03-19 13:33:56,768 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1733 transitions. Word has length 38 [2022-03-19 13:33:56,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:33:56,768 INFO L478 AbstractCegarLoop]: Abstraction has 1172 states and 1733 transitions. [2022-03-19 13:33:56,768 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-19 13:33:56,768 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1733 transitions. [2022-03-19 13:33:56,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-19 13:33:56,773 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:33:56,773 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:33:56,773 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-19 13:33:56,774 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:33:56,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:33:56,774 INFO L85 PathProgramCache]: Analyzing trace with hash 76033968, now seen corresponding path program 1 times [2022-03-19 13:33:56,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:33:56,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [416609662] [2022-03-19 13:33:56,775 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:33:56,775 INFO L85 PathProgramCache]: Analyzing trace with hash 76033968, now seen corresponding path program 2 times [2022-03-19 13:33:56,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:33:56,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360052048] [2022-03-19 13:33:56,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:33:56,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:33:56,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:33:56,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:33:56,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:33:56,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 13:33:56,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:33:56,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 13:33:56,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:33:57,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:33:57,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:33:57,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360052048] [2022-03-19 13:33:57,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360052048] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:33:57,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:33:57,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 13:33:57,016 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:33:57,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [416609662] [2022-03-19 13:33:57,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [416609662] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:33:57,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:33:57,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 13:33:57,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474672564] [2022-03-19 13:33:57,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:33:57,017 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-19 13:33:57,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:33:57,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-19 13:33:57,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-19 13:33:57,018 INFO L87 Difference]: Start difference. First operand 1172 states and 1733 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 5 states have internal predecessors, (29), 4 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-03-19 13:34:02,895 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:34:04,928 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:34:09,872 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:34:12,638 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:34:14,672 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:34:16,601 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:34:17,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:34:17,697 INFO L93 Difference]: Finished difference Result 2221 states and 3345 transitions. [2022-03-19 13:34:17,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-19 13:34:17,697 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 5 states have internal predecessors, (29), 4 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2022-03-19 13:34:17,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:34:17,703 INFO L225 Difference]: With dead ends: 2221 [2022-03-19 13:34:17,704 INFO L226 Difference]: Without dead ends: 1514 [2022-03-19 13:34:17,706 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2022-03-19 13:34:17,706 INFO L912 BasicCegarLoop]: 1366 mSDtfsCounter, 3770 mSDsluCounter, 1260 mSDsCounter, 0 mSdLazyCounter, 2686 mSolverCounterSat, 1385 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3801 SdHoareTripleChecker+Valid, 2626 SdHoareTripleChecker+Invalid, 4075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1385 IncrementalHoareTripleChecker+Valid, 2686 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.1s IncrementalHoareTripleChecker+Time [2022-03-19 13:34:17,706 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [3801 Valid, 2626 Invalid, 4075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1385 Valid, 2686 Invalid, 4 Unknown, 0 Unchecked, 20.1s Time] [2022-03-19 13:34:17,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1514 states. [2022-03-19 13:34:17,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1514 to 1166. [2022-03-19 13:34:17,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1166 states, 887 states have (on average 1.4182638105975198) internal successors, (1258), 890 states have internal predecessors, (1258), 196 states have call successors, (196), 72 states have call predecessors, (196), 82 states have return successors, (267), 205 states have call predecessors, (267), 183 states have call successors, (267) [2022-03-19 13:34:17,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 1721 transitions. [2022-03-19 13:34:17,851 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 1721 transitions. Word has length 39 [2022-03-19 13:34:17,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:34:17,851 INFO L478 AbstractCegarLoop]: Abstraction has 1166 states and 1721 transitions. [2022-03-19 13:34:17,851 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 5 states have internal predecessors, (29), 4 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-03-19 13:34:17,851 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 1721 transitions. [2022-03-19 13:34:17,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-03-19 13:34:17,852 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:34:17,852 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:34:17,852 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-19 13:34:17,852 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:34:17,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:34:17,853 INFO L85 PathProgramCache]: Analyzing trace with hash -610227898, now seen corresponding path program 1 times [2022-03-19 13:34:17,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:34:17,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [449395503] [2022-03-19 13:34:17,853 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:34:17,853 INFO L85 PathProgramCache]: Analyzing trace with hash -610227898, now seen corresponding path program 2 times [2022-03-19 13:34:17,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:34:17,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680366691] [2022-03-19 13:34:17,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:34:17,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:34:17,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:34:17,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:34:17,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:34:18,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 13:34:18,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:34:18,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 13:34:18,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:34:18,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:34:18,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:34:18,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680366691] [2022-03-19 13:34:18,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680366691] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:34:18,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:34:18,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-19 13:34:18,061 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:34:18,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [449395503] [2022-03-19 13:34:18,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [449395503] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:34:18,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:34:18,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-19 13:34:18,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818498011] [2022-03-19 13:34:18,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:34:18,061 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-19 13:34:18,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:34:18,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-19 13:34:18,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-19 13:34:18,062 INFO L87 Difference]: Start difference. First operand 1166 states and 1721 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-19 13:34:22,847 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:34:24,699 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:34:26,729 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:34:28,831 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:34:31,834 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:34:35,628 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:34:37,645 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:34:39,669 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:34:41,794 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:34:42,841 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:34:44,949 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:34:45,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:34:45,442 INFO L93 Difference]: Finished difference Result 2067 states and 3010 transitions. [2022-03-19 13:34:45,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-19 13:34:45,443 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2022-03-19 13:34:45,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:34:45,449 INFO L225 Difference]: With dead ends: 2067 [2022-03-19 13:34:45,449 INFO L226 Difference]: Without dead ends: 1899 [2022-03-19 13:34:45,450 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-03-19 13:34:45,451 INFO L912 BasicCegarLoop]: 1135 mSDtfsCounter, 1439 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 2304 mSolverCounterSat, 332 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1483 SdHoareTripleChecker+Valid, 1848 SdHoareTripleChecker+Invalid, 2644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 2304 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.1s IncrementalHoareTripleChecker+Time [2022-03-19 13:34:45,451 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1483 Valid, 1848 Invalid, 2644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 2304 Invalid, 8 Unknown, 0 Unchecked, 27.1s Time] [2022-03-19 13:34:45,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2022-03-19 13:34:45,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1631. [2022-03-19 13:34:45,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1631 states, 1259 states have (on average 1.4233518665607625) internal successors, (1792), 1260 states have internal predecessors, (1792), 254 states have call successors, (254), 100 states have call predecessors, (254), 117 states have return successors, (346), 270 states have call predecessors, (346), 244 states have call successors, (346) [2022-03-19 13:34:45,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 2392 transitions. [2022-03-19 13:34:45,576 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 2392 transitions. Word has length 40 [2022-03-19 13:34:45,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:34:45,576 INFO L478 AbstractCegarLoop]: Abstraction has 1631 states and 2392 transitions. [2022-03-19 13:34:45,576 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-19 13:34:45,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 2392 transitions. [2022-03-19 13:34:45,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-03-19 13:34:45,577 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:34:45,577 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:34:45,577 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-19 13:34:45,577 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:34:45,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:34:45,577 INFO L85 PathProgramCache]: Analyzing trace with hash -305283800, now seen corresponding path program 1 times [2022-03-19 13:34:45,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:34:45,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [199133657] [2022-03-19 13:34:45,578 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:34:45,578 INFO L85 PathProgramCache]: Analyzing trace with hash -305283800, now seen corresponding path program 2 times [2022-03-19 13:34:45,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:34:45,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632949410] [2022-03-19 13:34:45,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:34:45,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:34:45,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:34:45,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:34:45,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:34:45,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 13:34:45,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:34:45,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 13:34:45,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:34:45,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:34:45,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:34:45,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632949410] [2022-03-19 13:34:45,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632949410] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:34:45,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:34:45,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-19 13:34:45,757 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:34:45,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [199133657] [2022-03-19 13:34:45,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [199133657] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:34:45,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:34:45,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-19 13:34:45,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343084793] [2022-03-19 13:34:45,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:34:45,758 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-19 13:34:45,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:34:45,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-19 13:34:45,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-19 13:34:45,759 INFO L87 Difference]: Start difference. First operand 1631 states and 2392 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-19 13:34:48,628 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 [] [2022-03-19 13:34:50,897 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:34:53,144 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:34:56,611 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:34:58,633 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:35:00,613 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:35:02,598 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:35:05,606 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:35:07,757 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:35:09,790 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:35:11,816 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:35:13,015 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:35:15,038 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:35:16,556 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:35:18,578 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:35:18,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:35:18,857 INFO L93 Difference]: Finished difference Result 1768 states and 2618 transitions. [2022-03-19 13:35:18,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-19 13:35:18,858 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2022-03-19 13:35:18,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:35:18,864 INFO L225 Difference]: With dead ends: 1768 [2022-03-19 13:35:18,864 INFO L226 Difference]: Without dead ends: 1764 [2022-03-19 13:35:18,864 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-03-19 13:35:18,865 INFO L912 BasicCegarLoop]: 904 mSDtfsCounter, 1392 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 550 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1416 SdHoareTripleChecker+Valid, 1458 SdHoareTripleChecker+Invalid, 1641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.8s IncrementalHoareTripleChecker+Time [2022-03-19 13:35:18,865 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1416 Valid, 1458 Invalid, 1641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 1081 Invalid, 10 Unknown, 0 Unchecked, 32.8s Time] [2022-03-19 13:35:18,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1764 states. [2022-03-19 13:35:19,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1764 to 1630. [2022-03-19 13:35:19,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1630 states, 1259 states have (on average 1.4217633042096902) internal successors, (1790), 1259 states have internal predecessors, (1790), 253 states have call successors, (253), 100 states have call predecessors, (253), 117 states have return successors, (346), 270 states have call predecessors, (346), 244 states have call successors, (346) [2022-03-19 13:35:19,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 2389 transitions. [2022-03-19 13:35:19,049 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 2389 transitions. Word has length 40 [2022-03-19 13:35:19,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:35:19,049 INFO L478 AbstractCegarLoop]: Abstraction has 1630 states and 2389 transitions. [2022-03-19 13:35:19,049 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-19 13:35:19,049 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 2389 transitions. [2022-03-19 13:35:19,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-03-19 13:35:19,052 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:35:19,052 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:35:19,052 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-19 13:35:19,053 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:35:19,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:35:19,053 INFO L85 PathProgramCache]: Analyzing trace with hash 2118625593, now seen corresponding path program 1 times [2022-03-19 13:35:19,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:35:19,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [424374833] [2022-03-19 13:35:19,053 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:35:19,053 INFO L85 PathProgramCache]: Analyzing trace with hash 2118625593, now seen corresponding path program 2 times [2022-03-19 13:35:19,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:35:19,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074924621] [2022-03-19 13:35:19,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:35:19,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:35:19,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:35:19,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:35:19,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:35:19,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 13:35:19,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:35:19,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 13:35:19,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:35:19,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-19 13:35:19,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:35:19,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:35:19,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:35:19,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074924621] [2022-03-19 13:35:19,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074924621] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:35:19,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:35:19,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 13:35:19,268 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:35:19,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [424374833] [2022-03-19 13:35:19,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [424374833] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:35:19,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:35:19,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 13:35:19,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203382069] [2022-03-19 13:35:19,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:35:19,269 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-19 13:35:19,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:35:19,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-19 13:35:19,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-19 13:35:19,270 INFO L87 Difference]: Start difference. First operand 1630 states and 2389 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 4 states have internal predecessors, (37), 3 states have call successors, (11), 7 states have call predecessors, (11), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-03-19 13:35:25,683 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:35:28,306 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:35:30,326 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:35:33,762 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:35:35,069 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:35:37,578 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:35:42,102 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:35:44,132 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:35:46,157 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:35:48,222 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:35:52,562 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:35:54,586 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:35:56,789 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:35:58,820 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:36:00,848 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:36:03,009 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:36:05,085 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:36:06,485 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:36:09,024 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:36:11,052 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:36:13,077 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 [] [2022-03-19 13:36:14,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:36:14,111 INFO L93 Difference]: Finished difference Result 2734 states and 4044 transitions. [2022-03-19 13:36:14,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-19 13:36:14,112 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 4 states have internal predecessors, (37), 3 states have call successors, (11), 7 states have call predecessors, (11), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 52 [2022-03-19 13:36:14,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:36:14,118 INFO L225 Difference]: With dead ends: 2734 [2022-03-19 13:36:14,118 INFO L226 Difference]: Without dead ends: 1596 [2022-03-19 13:36:14,120 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2022-03-19 13:36:14,121 INFO L912 BasicCegarLoop]: 966 mSDtfsCounter, 2464 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 2684 mSolverCounterSat, 1268 mSolverCounterUnsat, 17 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2490 SdHoareTripleChecker+Valid, 1674 SdHoareTripleChecker+Invalid, 3969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1268 IncrementalHoareTripleChecker+Valid, 2684 IncrementalHoareTripleChecker+Invalid, 17 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54.2s IncrementalHoareTripleChecker+Time [2022-03-19 13:36:14,121 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2490 Valid, 1674 Invalid, 3969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1268 Valid, 2684 Invalid, 17 Unknown, 0 Unchecked, 54.2s Time] [2022-03-19 13:36:14,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1596 states. [2022-03-19 13:36:14,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1596 to 1203. [2022-03-19 13:36:14,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 930 states have (on average 1.4043010752688172) internal successors, (1306), 932 states have internal predecessors, (1306), 182 states have call successors, (182), 75 states have call predecessors, (182), 90 states have return successors, (254), 195 states have call predecessors, (254), 173 states have call successors, (254) [2022-03-19 13:36:14,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1742 transitions. [2022-03-19 13:36:14,307 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1742 transitions. Word has length 52 [2022-03-19 13:36:14,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:36:14,308 INFO L478 AbstractCegarLoop]: Abstraction has 1203 states and 1742 transitions. [2022-03-19 13:36:14,308 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 4 states have internal predecessors, (37), 3 states have call successors, (11), 7 states have call predecessors, (11), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-03-19 13:36:14,308 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1742 transitions. [2022-03-19 13:36:14,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-03-19 13:36:14,312 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:36:14,312 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:36:14,312 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-19 13:36:14,312 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:36:14,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:36:14,313 INFO L85 PathProgramCache]: Analyzing trace with hash 975245132, now seen corresponding path program 1 times [2022-03-19 13:36:14,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:36:14,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1341399108] [2022-03-19 13:36:14,313 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:36:14,313 INFO L85 PathProgramCache]: Analyzing trace with hash 975245132, now seen corresponding path program 2 times [2022-03-19 13:36:14,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:36:14,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470235237] [2022-03-19 13:36:14,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:36:14,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:36:14,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:36:14,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:36:14,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:36:14,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 13:36:14,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:36:14,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 13:36:14,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:36:14,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-19 13:36:14,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:36:14,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:36:14,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:36:14,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470235237] [2022-03-19 13:36:14,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470235237] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:36:14,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:36:14,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-19 13:36:14,544 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:36:14,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1341399108] [2022-03-19 13:36:14,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1341399108] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:36:14,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:36:14,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-19 13:36:14,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577221173] [2022-03-19 13:36:14,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:36:14,544 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-19 13:36:14,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:36:14,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-19 13:36:14,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-03-19 13:36:14,545 INFO L87 Difference]: Start difference. First operand 1203 states and 1742 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-19 13:36:20,178 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:36:21,867 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:36:23,893 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:36:26,244 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:36:28,454 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:36:30,486 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:36:32,515 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:36:34,286 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:36:36,557 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:36:38,503 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:36:43,068 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:36:45,235 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:36:46,261 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:36:48,278 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:36:50,305 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:36:51,568 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:36:53,588 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:36:56,104 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 [] [2022-03-19 13:36:56,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:36:56,635 INFO L93 Difference]: Finished difference Result 2154 states and 3211 transitions. [2022-03-19 13:36:56,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-19 13:36:56,636 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 53 [2022-03-19 13:36:56,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:36:56,641 INFO L225 Difference]: With dead ends: 2154 [2022-03-19 13:36:56,641 INFO L226 Difference]: Without dead ends: 1486 [2022-03-19 13:36:56,643 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-03-19 13:36:56,644 INFO L912 BasicCegarLoop]: 776 mSDtfsCounter, 1780 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 2333 mSolverCounterSat, 719 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1839 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 3064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 719 IncrementalHoareTripleChecker+Valid, 2333 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.6s IncrementalHoareTripleChecker+Time [2022-03-19 13:36:56,645 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1839 Valid, 1203 Invalid, 3064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [719 Valid, 2333 Invalid, 12 Unknown, 0 Unchecked, 41.6s Time] [2022-03-19 13:36:56,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1486 states. [2022-03-19 13:36:56,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1486 to 1200. [2022-03-19 13:36:56,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1200 states, 928 states have (on average 1.396551724137931) internal successors, (1296), 929 states have internal predecessors, (1296), 181 states have call successors, (181), 75 states have call predecessors, (181), 90 states have return successors, (254), 195 states have call predecessors, (254), 173 states have call successors, (254) [2022-03-19 13:36:56,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1200 states to 1200 states and 1731 transitions. [2022-03-19 13:36:56,803 INFO L78 Accepts]: Start accepts. Automaton has 1200 states and 1731 transitions. Word has length 53 [2022-03-19 13:36:56,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:36:56,803 INFO L478 AbstractCegarLoop]: Abstraction has 1200 states and 1731 transitions. [2022-03-19 13:36:56,803 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-19 13:36:56,804 INFO L276 IsEmpty]: Start isEmpty. Operand 1200 states and 1731 transitions. [2022-03-19 13:36:56,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-03-19 13:36:56,806 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:36:56,806 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:36:56,806 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-19 13:36:56,806 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:36:56,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:36:56,807 INFO L85 PathProgramCache]: Analyzing trace with hash -990249866, now seen corresponding path program 1 times [2022-03-19 13:36:56,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:36:56,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [60785864] [2022-03-19 13:36:56,807 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:36:56,807 INFO L85 PathProgramCache]: Analyzing trace with hash -990249866, now seen corresponding path program 2 times [2022-03-19 13:36:56,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:36:56,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894050543] [2022-03-19 13:36:56,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:36:56,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:36:56,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:36:56,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:36:56,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:36:56,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 13:36:56,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:36:56,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 13:36:56,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:36:56,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-19 13:36:56,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:36:57,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 13:36:57,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:36:57,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:36:57,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:36:57,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894050543] [2022-03-19 13:36:57,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894050543] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:36:57,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:36:57,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 13:36:57,034 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:36:57,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [60785864] [2022-03-19 13:36:57,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [60785864] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:36:57,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:36:57,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 13:36:57,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136433041] [2022-03-19 13:36:57,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:36:57,035 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-19 13:36:57,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:36:57,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-19 13:36:57,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-03-19 13:36:57,036 INFO L87 Difference]: Start difference. First operand 1200 states and 1731 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-19 13:37:04,184 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:37:06,120 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:37:08,373 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:37:09,766 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:37:11,786 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:37:13,811 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:37:16,500 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:37:18,519 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:37:20,041 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:37:23,635 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:37:25,474 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:37:27,870 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:37:29,941 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:37:33,496 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:37:34,552 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:37:35,939 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:37:37,045 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:37:39,314 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:37:40,604 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:37:43,427 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:37:46,584 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:37:48,640 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:37:48,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:37:48,885 INFO L93 Difference]: Finished difference Result 1832 states and 2719 transitions. [2022-03-19 13:37:48,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-19 13:37:48,885 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 53 [2022-03-19 13:37:48,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:37:48,891 INFO L225 Difference]: With dead ends: 1832 [2022-03-19 13:37:48,892 INFO L226 Difference]: Without dead ends: 1772 [2022-03-19 13:37:48,892 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=174, Invalid=528, Unknown=0, NotChecked=0, Total=702 [2022-03-19 13:37:48,893 INFO L912 BasicCegarLoop]: 1064 mSDtfsCounter, 2900 mSDsluCounter, 1759 mSDsCounter, 0 mSdLazyCounter, 4451 mSolverCounterSat, 1363 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2933 SdHoareTripleChecker+Valid, 2823 SdHoareTripleChecker+Invalid, 5825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1363 IncrementalHoareTripleChecker+Valid, 4451 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.8s IncrementalHoareTripleChecker+Time [2022-03-19 13:37:48,893 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2933 Valid, 2823 Invalid, 5825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1363 Valid, 4451 Invalid, 11 Unknown, 0 Unchecked, 50.8s Time] [2022-03-19 13:37:48,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1772 states. [2022-03-19 13:37:49,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1772 to 1272. [2022-03-19 13:37:49,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1272 states, 982 states have (on average 1.390020366598778) internal successors, (1365), 982 states have internal predecessors, (1365), 190 states have call successors, (190), 83 states have call predecessors, (190), 99 states have return successors, (264), 206 states have call predecessors, (264), 182 states have call successors, (264) [2022-03-19 13:37:49,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1272 states to 1272 states and 1819 transitions. [2022-03-19 13:37:49,066 INFO L78 Accepts]: Start accepts. Automaton has 1272 states and 1819 transitions. Word has length 53 [2022-03-19 13:37:49,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:37:49,067 INFO L478 AbstractCegarLoop]: Abstraction has 1272 states and 1819 transitions. [2022-03-19 13:37:49,067 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-19 13:37:49,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1272 states and 1819 transitions. [2022-03-19 13:37:49,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-19 13:37:49,068 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:37:49,068 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:37:49,069 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-19 13:37:49,069 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:37:49,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:37:49,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1812095217, now seen corresponding path program 1 times [2022-03-19 13:37:49,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:37:49,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1916761302] [2022-03-19 13:37:49,069 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:37:49,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1812095217, now seen corresponding path program 2 times [2022-03-19 13:37:49,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:37:49,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633780380] [2022-03-19 13:37:49,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:37:49,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:37:49,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:37:49,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:37:49,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:37:49,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 13:37:49,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:37:49,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 13:37:49,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:37:49,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-19 13:37:49,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:37:49,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 13:37:49,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:37:49,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:37:49,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:37:49,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633780380] [2022-03-19 13:37:49,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633780380] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:37:49,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:37:49,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 13:37:49,379 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:37:49,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1916761302] [2022-03-19 13:37:49,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1916761302] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:37:49,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:37:49,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 13:37:49,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753506152] [2022-03-19 13:37:49,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:37:49,380 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-19 13:37:49,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:37:49,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-19 13:37:49,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-03-19 13:37:49,380 INFO L87 Difference]: Start difference. First operand 1272 states and 1819 transitions. Second operand has 11 states, 10 states have (on average 4.3) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-19 13:37:58,589 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:38:00,619 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:38:02,184 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:38:04,211 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:38:06,733 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:38:08,458 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:38:10,564 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:38:15,695 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:38:17,723 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:38:19,750 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:38:20,872 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:38:22,895 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:38:26,402 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:38:28,431 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:38:30,461 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:38:32,490 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:38:34,702 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:38:36,733 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:38:38,759 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:38:40,005 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:38:43,194 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:38:47,272 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:38:49,296 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:38:49,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:38:49,855 INFO L93 Difference]: Finished difference Result 1949 states and 2886 transitions. [2022-03-19 13:38:49,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-19 13:38:49,856 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.3) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 55 [2022-03-19 13:38:49,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:38:49,861 INFO L225 Difference]: With dead ends: 1949 [2022-03-19 13:38:49,862 INFO L226 Difference]: Without dead ends: 1937 [2022-03-19 13:38:49,862 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2022-03-19 13:38:49,862 INFO L912 BasicCegarLoop]: 1059 mSDtfsCounter, 3543 mSDsluCounter, 1743 mSDsCounter, 0 mSdLazyCounter, 4070 mSolverCounterSat, 1613 mSolverCounterUnsat, 18 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3591 SdHoareTripleChecker+Valid, 2802 SdHoareTripleChecker+Invalid, 5701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1613 IncrementalHoareTripleChecker+Valid, 4070 IncrementalHoareTripleChecker+Invalid, 18 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 59.4s IncrementalHoareTripleChecker+Time [2022-03-19 13:38:49,863 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [3591 Valid, 2802 Invalid, 5701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1613 Valid, 4070 Invalid, 18 Unknown, 0 Unchecked, 59.4s Time] [2022-03-19 13:38:49,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1937 states. [2022-03-19 13:38:50,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1937 to 1326. [2022-03-19 13:38:50,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1326 states, 1025 states have (on average 1.377560975609756) internal successors, (1412), 1018 states have internal predecessors, (1412), 190 states have call successors, (190), 83 states have call predecessors, (190), 110 states have return successors, (282), 224 states have call predecessors, (282), 182 states have call successors, (282) [2022-03-19 13:38:50,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1326 states to 1326 states and 1884 transitions. [2022-03-19 13:38:50,058 INFO L78 Accepts]: Start accepts. Automaton has 1326 states and 1884 transitions. Word has length 55 [2022-03-19 13:38:50,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:38:50,059 INFO L478 AbstractCegarLoop]: Abstraction has 1326 states and 1884 transitions. [2022-03-19 13:38:50,059 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.3) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-19 13:38:50,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1326 states and 1884 transitions. [2022-03-19 13:38:50,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-19 13:38:50,061 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:38:50,061 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:38:50,061 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-19 13:38:50,061 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:38:50,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:38:50,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1811818387, now seen corresponding path program 1 times [2022-03-19 13:38:50,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:38:50,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1689257366] [2022-03-19 13:38:50,078 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:38:50,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1811818387, now seen corresponding path program 2 times [2022-03-19 13:38:50,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:38:50,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770935373] [2022-03-19 13:38:50,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:38:50,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:38:50,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:50,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:38:50,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:50,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 13:38:50,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:50,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 13:38:50,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:50,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-19 13:38:50,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:50,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 13:38:50,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:50,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:38:50,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:38:50,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770935373] [2022-03-19 13:38:50,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770935373] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:38:50,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:38:50,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-19 13:38:50,275 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:38:50,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1689257366] [2022-03-19 13:38:50,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1689257366] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:38:50,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:38:50,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-19 13:38:50,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670021222] [2022-03-19 13:38:50,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:38:50,276 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-19 13:38:50,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:38:50,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-19 13:38:50,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-03-19 13:38:50,277 INFO L87 Difference]: Start difference. First operand 1326 states and 1884 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 13:38:56,622 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:38:59,029 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:39:00,296 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:39:02,883 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:39:04,912 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:39:06,973 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:39:10,099 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:39:13,156 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:39:17,105 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:39:19,768 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:39:20,891 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:39:21,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:39:21,352 INFO L93 Difference]: Finished difference Result 1626 states and 2418 transitions. [2022-03-19 13:39:21,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-19 13:39:21,353 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 55 [2022-03-19 13:39:21,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:39:21,358 INFO L225 Difference]: With dead ends: 1626 [2022-03-19 13:39:21,358 INFO L226 Difference]: Without dead ends: 1600 [2022-03-19 13:39:21,358 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-03-19 13:39:21,359 INFO L912 BasicCegarLoop]: 776 mSDtfsCounter, 2286 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 1235 mSolverCounterSat, 982 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2333 SdHoareTripleChecker+Valid, 1170 SdHoareTripleChecker+Invalid, 2225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 982 IncrementalHoareTripleChecker+Valid, 1235 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.5s IncrementalHoareTripleChecker+Time [2022-03-19 13:39:21,359 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2333 Valid, 1170 Invalid, 2225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [982 Valid, 1235 Invalid, 8 Unknown, 0 Unchecked, 30.5s Time] [2022-03-19 13:39:21,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1600 states. [2022-03-19 13:39:21,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1600 to 1274. [2022-03-19 13:39:21,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1274 states, 985 states have (on average 1.385786802030457) internal successors, (1365), 984 states have internal predecessors, (1365), 189 states have call successors, (189), 83 states have call predecessors, (189), 99 states have return successors, (264), 206 states have call predecessors, (264), 182 states have call successors, (264) [2022-03-19 13:39:21,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 1818 transitions. [2022-03-19 13:39:21,567 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 1818 transitions. Word has length 55 [2022-03-19 13:39:21,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:39:21,567 INFO L478 AbstractCegarLoop]: Abstraction has 1274 states and 1818 transitions. [2022-03-19 13:39:21,567 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 13:39:21,567 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 1818 transitions. [2022-03-19 13:39:21,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-19 13:39:21,569 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:39:21,569 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:39:21,569 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-19 13:39:21,569 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:39:21,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:39:21,570 INFO L85 PathProgramCache]: Analyzing trace with hash -650041914, now seen corresponding path program 1 times [2022-03-19 13:39:21,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:39:21,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1161733871] [2022-03-19 13:39:21,570 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:39:21,570 INFO L85 PathProgramCache]: Analyzing trace with hash -650041914, now seen corresponding path program 2 times [2022-03-19 13:39:21,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:39:21,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305580973] [2022-03-19 13:39:21,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:39:21,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:39:21,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:21,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:39:21,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:21,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 13:39:21,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:21,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 13:39:21,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:21,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-19 13:39:21,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:21,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 13:39:21,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:21,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:39:21,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:39:21,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305580973] [2022-03-19 13:39:21,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305580973] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:39:21,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:39:21,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 13:39:21,784 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:39:21,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1161733871] [2022-03-19 13:39:21,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1161733871] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:39:21,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:39:21,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 13:39:21,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817269943] [2022-03-19 13:39:21,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:39:21,785 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-19 13:39:21,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:39:21,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-19 13:39:21,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-19 13:39:21,785 INFO L87 Difference]: Start difference. First operand 1274 states and 1818 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 4 states have internal predecessors, (43), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-19 13:39:28,790 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 [] [2022-03-19 13:39:30,823 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:39:33,251 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:39:34,340 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:39:36,364 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:39:39,554 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:39:41,588 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:39:44,378 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:39:48,097 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:39:50,813 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:39:52,841 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:39:55,042 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:39:57,942 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:39:59,050 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:40:01,542 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:40:01,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:40:01,728 INFO L93 Difference]: Finished difference Result 1589 states and 2362 transitions. [2022-03-19 13:40:01,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-19 13:40:01,729 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 4 states have internal predecessors, (43), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 55 [2022-03-19 13:40:01,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:40:01,733 INFO L225 Difference]: With dead ends: 1589 [2022-03-19 13:40:01,734 INFO L226 Difference]: Without dead ends: 1564 [2022-03-19 13:40:01,734 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-03-19 13:40:01,734 INFO L912 BasicCegarLoop]: 753 mSDtfsCounter, 2294 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 1925 mSolverCounterSat, 990 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2342 SdHoareTripleChecker+Valid, 1518 SdHoareTripleChecker+Invalid, 2925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 990 IncrementalHoareTripleChecker+Valid, 1925 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.2s IncrementalHoareTripleChecker+Time [2022-03-19 13:40:01,735 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2342 Valid, 1518 Invalid, 2925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [990 Valid, 1925 Invalid, 10 Unknown, 0 Unchecked, 39.2s Time] [2022-03-19 13:40:01,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1564 states. [2022-03-19 13:40:01,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1564 to 1277. [2022-03-19 13:40:01,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1277 states, 988 states have (on average 1.3856275303643724) internal successors, (1369), 987 states have internal predecessors, (1369), 189 states have call successors, (189), 83 states have call predecessors, (189), 99 states have return successors, (264), 206 states have call predecessors, (264), 182 states have call successors, (264) [2022-03-19 13:40:01,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1277 states to 1277 states and 1822 transitions. [2022-03-19 13:40:01,995 INFO L78 Accepts]: Start accepts. Automaton has 1277 states and 1822 transitions. Word has length 55 [2022-03-19 13:40:01,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:40:01,995 INFO L478 AbstractCegarLoop]: Abstraction has 1277 states and 1822 transitions. [2022-03-19 13:40:01,995 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 4 states have internal predecessors, (43), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-19 13:40:01,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1277 states and 1822 transitions. [2022-03-19 13:40:01,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-19 13:40:01,997 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:40:01,997 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:40:01,997 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-19 13:40:01,997 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:40:01,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:40:01,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1650780676, now seen corresponding path program 1 times [2022-03-19 13:40:01,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:40:01,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2132308972] [2022-03-19 13:40:01,998 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:40:01,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1650780676, now seen corresponding path program 2 times [2022-03-19 13:40:01,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:40:01,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567726269] [2022-03-19 13:40:01,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:40:01,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:40:02,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:02,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:40:02,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:02,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 13:40:02,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:02,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 13:40:02,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:02,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-19 13:40:02,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:02,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 13:40:02,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:02,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:40:02,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:40:02,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567726269] [2022-03-19 13:40:02,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567726269] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:40:02,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:40:02,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 13:40:02,235 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:40:02,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2132308972] [2022-03-19 13:40:02,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2132308972] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:40:02,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:40:02,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 13:40:02,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537503316] [2022-03-19 13:40:02,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:40:02,235 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-19 13:40:02,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:40:02,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-19 13:40:02,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-03-19 13:40:02,236 INFO L87 Difference]: Start difference. First operand 1277 states and 1822 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-19 13:40:06,298 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:40:10,293 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:40:13,744 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:40:15,783 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:40:17,806 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:40:19,832 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:40:21,893 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:40:23,911 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:40:26,311 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:40:28,287 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:40:32,539 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:40:34,564 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:40:36,592 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:40:39,116 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:40:41,636 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:40:42,886 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:40:43,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:40:43,523 INFO L93 Difference]: Finished difference Result 1594 states and 2366 transitions. [2022-03-19 13:40:43,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-19 13:40:43,523 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 55 [2022-03-19 13:40:43,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:40:43,529 INFO L225 Difference]: With dead ends: 1594 [2022-03-19 13:40:43,529 INFO L226 Difference]: Without dead ends: 1533 [2022-03-19 13:40:43,530 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2022-03-19 13:40:43,530 INFO L912 BasicCegarLoop]: 748 mSDtfsCounter, 2884 mSDsluCounter, 1230 mSDsCounter, 0 mSdLazyCounter, 3100 mSolverCounterSat, 1308 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2932 SdHoareTripleChecker+Valid, 1978 SdHoareTripleChecker+Invalid, 4418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1308 IncrementalHoareTripleChecker+Valid, 3100 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.3s IncrementalHoareTripleChecker+Time [2022-03-19 13:40:43,530 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2932 Valid, 1978 Invalid, 4418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1308 Valid, 3100 Invalid, 10 Unknown, 0 Unchecked, 40.3s Time] [2022-03-19 13:40:43,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1533 states. [2022-03-19 13:40:43,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1533 to 1251. [2022-03-19 13:40:43,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1251 states, 966 states have (on average 1.3892339544513457) internal successors, (1342), 972 states have internal predecessors, (1342), 189 states have call successors, (189), 83 states have call predecessors, (189), 95 states have return successors, (253), 195 states have call predecessors, (253), 182 states have call successors, (253) [2022-03-19 13:40:43,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1251 states to 1251 states and 1784 transitions. [2022-03-19 13:40:43,765 INFO L78 Accepts]: Start accepts. Automaton has 1251 states and 1784 transitions. Word has length 55 [2022-03-19 13:40:43,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:40:43,765 INFO L478 AbstractCegarLoop]: Abstraction has 1251 states and 1784 transitions. [2022-03-19 13:40:43,765 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-19 13:40:43,765 INFO L276 IsEmpty]: Start isEmpty. Operand 1251 states and 1784 transitions. [2022-03-19 13:40:43,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-19 13:40:43,767 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:40:43,767 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:40:43,767 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-19 13:40:43,767 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:40:43,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:40:43,768 INFO L85 PathProgramCache]: Analyzing trace with hash 2140205313, now seen corresponding path program 1 times [2022-03-19 13:40:43,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:40:43,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [59359162] [2022-03-19 13:40:43,769 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:40:43,769 INFO L85 PathProgramCache]: Analyzing trace with hash 2140205313, now seen corresponding path program 2 times [2022-03-19 13:40:43,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:40:43,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536898517] [2022-03-19 13:40:43,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:40:43,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:40:43,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:43,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:40:43,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:43,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 13:40:43,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:43,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 13:40:43,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:43,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-19 13:40:43,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:43,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-03-19 13:40:43,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:43,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:40:43,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:40:43,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536898517] [2022-03-19 13:40:43,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536898517] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:40:43,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:40:43,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 13:40:43,981 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:40:43,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [59359162] [2022-03-19 13:40:43,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [59359162] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:40:43,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:40:43,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 13:40:43,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785682899] [2022-03-19 13:40:43,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:40:43,982 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-19 13:40:43,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:40:43,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-19 13:40:43,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-03-19 13:40:43,983 INFO L87 Difference]: Start difference. First operand 1251 states and 1784 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (11), 8 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-19 13:40:51,015 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:40:52,096 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:40:54,627 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:40:56,466 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:40:58,487 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:41:01,517 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:41:03,595 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:41:05,617 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:41:08,392 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:41:09,530 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:41:12,518 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:41:15,190 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:41:16,473 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:41:18,639 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:41:20,678 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:41:20,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:41:20,863 INFO L93 Difference]: Finished difference Result 2248 states and 3288 transitions. [2022-03-19 13:41:20,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-19 13:41:20,864 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (11), 8 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 60 [2022-03-19 13:41:20,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:41:20,869 INFO L225 Difference]: With dead ends: 2248 [2022-03-19 13:41:20,869 INFO L226 Difference]: Without dead ends: 1600 [2022-03-19 13:41:20,871 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-03-19 13:41:20,871 INFO L912 BasicCegarLoop]: 882 mSDtfsCounter, 1640 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 2042 mSolverCounterSat, 803 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1699 SdHoareTripleChecker+Valid, 1841 SdHoareTripleChecker+Invalid, 2856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 803 IncrementalHoareTripleChecker+Valid, 2042 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.2s IncrementalHoareTripleChecker+Time [2022-03-19 13:41:20,871 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1699 Valid, 1841 Invalid, 2856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [803 Valid, 2042 Invalid, 11 Unknown, 0 Unchecked, 36.2s Time] [2022-03-19 13:41:20,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1600 states. [2022-03-19 13:41:21,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1600 to 1251. [2022-03-19 13:41:21,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1251 states, 966 states have (on average 1.3881987577639752) internal successors, (1341), 972 states have internal predecessors, (1341), 189 states have call successors, (189), 83 states have call predecessors, (189), 95 states have return successors, (253), 195 states have call predecessors, (253), 182 states have call successors, (253) [2022-03-19 13:41:21,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1251 states to 1251 states and 1783 transitions. [2022-03-19 13:41:21,182 INFO L78 Accepts]: Start accepts. Automaton has 1251 states and 1783 transitions. Word has length 60 [2022-03-19 13:41:21,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:41:21,182 INFO L478 AbstractCegarLoop]: Abstraction has 1251 states and 1783 transitions. [2022-03-19 13:41:21,182 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (11), 8 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-19 13:41:21,182 INFO L276 IsEmpty]: Start isEmpty. Operand 1251 states and 1783 transitions. [2022-03-19 13:41:21,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-03-19 13:41:21,194 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:41:21,195 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:41:21,195 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-03-19 13:41:21,195 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:41:21,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:41:21,195 INFO L85 PathProgramCache]: Analyzing trace with hash 339212706, now seen corresponding path program 1 times [2022-03-19 13:41:21,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:41:21,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [875790304] [2022-03-19 13:41:21,195 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:41:21,196 INFO L85 PathProgramCache]: Analyzing trace with hash 339212706, now seen corresponding path program 2 times [2022-03-19 13:41:21,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:41:21,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312344424] [2022-03-19 13:41:21,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:41:21,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:41:21,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:21,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:41:21,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:21,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 13:41:21,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:21,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 13:41:21,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:21,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-19 13:41:21,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:21,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 13:41:21,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:21,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:41:21,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:41:21,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312344424] [2022-03-19 13:41:21,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312344424] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:41:21,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:41:21,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-19 13:41:21,395 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:41:21,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [875790304] [2022-03-19 13:41:21,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [875790304] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:41:21,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:41:21,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-19 13:41:21,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018804858] [2022-03-19 13:41:21,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:41:21,396 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-19 13:41:21,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:41:21,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-19 13:41:21,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-03-19 13:41:21,397 INFO L87 Difference]: Start difference. First operand 1251 states and 1783 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-19 13:41:28,068 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:41:30,957 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:41:32,988 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:41:35,541 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:41:37,830 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:41:41,562 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:41:43,582 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:41:45,604 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:41:47,697 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:41:49,722 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:41:52,571 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:41:56,232 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:41:58,740 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:42:00,439 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:42:02,726 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:42:03,796 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:42:05,002 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:42:07,023 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:42:09,302 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:42:12,058 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:42:15,884 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:42:17,653 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:42:18,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:42:18,872 INFO L93 Difference]: Finished difference Result 2771 states and 4052 transitions. [2022-03-19 13:42:18,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-19 13:42:18,873 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 56 [2022-03-19 13:42:18,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:42:18,878 INFO L225 Difference]: With dead ends: 2771 [2022-03-19 13:42:18,878 INFO L226 Difference]: Without dead ends: 1528 [2022-03-19 13:42:18,880 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-03-19 13:42:18,881 INFO L912 BasicCegarLoop]: 833 mSDtfsCounter, 715 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 2933 mSolverCounterSat, 440 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 55.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 742 SdHoareTripleChecker+Valid, 1624 SdHoareTripleChecker+Invalid, 3388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 440 IncrementalHoareTripleChecker+Valid, 2933 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.8s IncrementalHoareTripleChecker+Time [2022-03-19 13:42:18,881 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [742 Valid, 1624 Invalid, 3388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [440 Valid, 2933 Invalid, 15 Unknown, 0 Unchecked, 56.8s Time] [2022-03-19 13:42:18,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1528 states. [2022-03-19 13:42:19,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1528 to 1254. [2022-03-19 13:42:19,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1254 states, 969 states have (on average 1.3869969040247678) internal successors, (1344), 975 states have internal predecessors, (1344), 189 states have call successors, (189), 83 states have call predecessors, (189), 95 states have return successors, (253), 195 states have call predecessors, (253), 182 states have call successors, (253) [2022-03-19 13:42:19,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1254 states to 1254 states and 1786 transitions. [2022-03-19 13:42:19,127 INFO L78 Accepts]: Start accepts. Automaton has 1254 states and 1786 transitions. Word has length 56 [2022-03-19 13:42:19,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:42:19,127 INFO L478 AbstractCegarLoop]: Abstraction has 1254 states and 1786 transitions. [2022-03-19 13:42:19,127 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-19 13:42:19,128 INFO L276 IsEmpty]: Start isEmpty. Operand 1254 states and 1786 transitions. [2022-03-19 13:42:19,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-19 13:42:19,129 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:42:19,129 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:42:19,129 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-03-19 13:42:19,129 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:42:19,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:42:19,130 INFO L85 PathProgramCache]: Analyzing trace with hash -308157176, now seen corresponding path program 1 times [2022-03-19 13:42:19,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:42:19,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [213649727] [2022-03-19 13:42:19,136 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:42:19,136 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:42:19,136 INFO L85 PathProgramCache]: Analyzing trace with hash -308157176, now seen corresponding path program 2 times [2022-03-19 13:42:19,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:42:19,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463796019] [2022-03-19 13:42:19,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:42:19,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:42:19,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:42:19,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:42:19,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:42:19,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 13:42:19,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:42:19,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-19 13:42:19,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:42:19,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-19 13:42:19,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:42:19,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 13:42:19,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:42:19,343 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-19 13:42:19,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:42:19,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463796019] [2022-03-19 13:42:19,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463796019] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 13:42:19,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321991015] [2022-03-19 13:42:19,344 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 13:42:19,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 13:42:19,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 13:42:19,345 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 13:42:19,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-19 13:42:19,885 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-19 13:42:19,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 13:42:19,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 912 conjuncts, 34 conjunts are in the unsatisfiable core [2022-03-19 13:42:19,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 13:42:20,337 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-19 13:42:20,337 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-19 13:42:20,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321991015] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:42:20,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-19 13:42:20,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [8] total 19 [2022-03-19 13:42:20,338 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:42:20,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [213649727] [2022-03-19 13:42:20,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [213649727] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:42:20,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:42:20,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 13:42:20,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358852790] [2022-03-19 13:42:20,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:42:20,339 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-19 13:42:20,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:42:20,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-19 13:42:20,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2022-03-19 13:42:20,340 INFO L87 Difference]: Start difference. First operand 1254 states and 1786 transitions. Second operand has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 11 states have internal predecessors, (50), 4 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-19 13:42:26,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:42:26,178 INFO L93 Difference]: Finished difference Result 1328 states and 1867 transitions. [2022-03-19 13:42:26,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-19 13:42:26,178 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 11 states have internal predecessors, (50), 4 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 62 [2022-03-19 13:42:26,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:42:26,189 INFO L225 Difference]: With dead ends: 1328 [2022-03-19 13:42:26,190 INFO L226 Difference]: Without dead ends: 1305 [2022-03-19 13:42:26,190 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=121, Invalid=635, Unknown=0, NotChecked=0, Total=756 [2022-03-19 13:42:26,191 INFO L912 BasicCegarLoop]: 833 mSDtfsCounter, 1308 mSDsluCounter, 3384 mSDsCounter, 0 mSdLazyCounter, 2105 mSolverCounterSat, 362 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1346 SdHoareTripleChecker+Valid, 4217 SdHoareTripleChecker+Invalid, 2467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 362 IncrementalHoareTripleChecker+Valid, 2105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-03-19 13:42:26,191 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1346 Valid, 4217 Invalid, 2467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [362 Valid, 2105 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-03-19 13:42:26,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1305 states. [2022-03-19 13:42:26,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1305 to 1253. [2022-03-19 13:42:26,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1253 states, 968 states have (on average 1.3863636363636365) internal successors, (1342), 974 states have internal predecessors, (1342), 189 states have call successors, (189), 83 states have call predecessors, (189), 95 states have return successors, (253), 195 states have call predecessors, (253), 182 states have call successors, (253) [2022-03-19 13:42:26,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1253 states to 1253 states and 1784 transitions. [2022-03-19 13:42:26,459 INFO L78 Accepts]: Start accepts. Automaton has 1253 states and 1784 transitions. Word has length 62 [2022-03-19 13:42:26,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:42:26,459 INFO L478 AbstractCegarLoop]: Abstraction has 1253 states and 1784 transitions. [2022-03-19 13:42:26,460 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 11 states have internal predecessors, (50), 4 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-19 13:42:26,460 INFO L276 IsEmpty]: Start isEmpty. Operand 1253 states and 1784 transitions. [2022-03-19 13:42:26,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-03-19 13:42:26,461 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:42:26,461 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:42:26,495 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-03-19 13:42:26,682 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-03-19 13:42:26,682 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:42:26,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:42:26,682 INFO L85 PathProgramCache]: Analyzing trace with hash 497026437, now seen corresponding path program 1 times [2022-03-19 13:42:26,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:42:26,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [745241759] [2022-03-19 13:42:26,684 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:42:26,684 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:42:26,684 INFO L85 PathProgramCache]: Analyzing trace with hash 497026437, now seen corresponding path program 2 times [2022-03-19 13:42:26,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:42:26,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575798478] [2022-03-19 13:42:26,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:42:26,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:42:26,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:42:26,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:42:26,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:42:26,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 13:42:26,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:42:26,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-19 13:42:26,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:42:26,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-19 13:42:26,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:42:27,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 13:42:27,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:42:27,009 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-19 13:42:27,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:42:27,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575798478] [2022-03-19 13:42:27,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575798478] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 13:42:27,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251148501] [2022-03-19 13:42:27,010 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 13:42:27,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 13:42:27,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 13:42:27,011 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 13:42:27,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-19 13:42:27,550 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-19 13:42:27,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 13:42:27,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 913 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-19 13:42:27,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 13:42:27,770 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-19 13:42:27,770 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-19 13:42:27,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251148501] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:42:27,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-19 13:42:27,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 15 [2022-03-19 13:42:27,771 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:42:27,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [745241759] [2022-03-19 13:42:27,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [745241759] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:42:27,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:42:27,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-19 13:42:27,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893796189] [2022-03-19 13:42:27,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:42:27,771 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-19 13:42:27,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:42:27,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-19 13:42:27,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-03-19 13:42:27,772 INFO L87 Difference]: Start difference. First operand 1253 states and 1784 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 7 states have internal predecessors, (51), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 13:42:28,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:42:28,166 INFO L93 Difference]: Finished difference Result 1275 states and 1806 transitions. [2022-03-19 13:42:28,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-19 13:42:28,166 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 7 states have internal predecessors, (51), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 63 [2022-03-19 13:42:28,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:42:28,170 INFO L225 Difference]: With dead ends: 1275 [2022-03-19 13:42:28,170 INFO L226 Difference]: Without dead ends: 1252 [2022-03-19 13:42:28,171 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-03-19 13:42:28,171 INFO L912 BasicCegarLoop]: 936 mSDtfsCounter, 6 mSDsluCounter, 5558 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 6494 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-19 13:42:28,172 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 6494 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-19 13:42:28,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2022-03-19 13:42:28,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 1252. [2022-03-19 13:42:28,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1252 states, 967 states have (on average 1.3857290589451914) internal successors, (1340), 973 states have internal predecessors, (1340), 189 states have call successors, (189), 83 states have call predecessors, (189), 95 states have return successors, (253), 195 states have call predecessors, (253), 182 states have call successors, (253) [2022-03-19 13:42:28,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 1782 transitions. [2022-03-19 13:42:28,460 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 1782 transitions. Word has length 63 [2022-03-19 13:42:28,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:42:28,460 INFO L478 AbstractCegarLoop]: Abstraction has 1252 states and 1782 transitions. [2022-03-19 13:42:28,460 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 7 states have internal predecessors, (51), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 13:42:28,460 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 1782 transitions. [2022-03-19 13:42:28,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-03-19 13:42:28,462 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:42:28,462 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:42:28,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-19 13:42:28,677 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-03-19 13:42:28,677 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:42:28,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:42:28,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1089557179, now seen corresponding path program 1 times [2022-03-19 13:42:28,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:42:28,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [621791231] [2022-03-19 13:42:28,678 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:42:28,678 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:42:28,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1089557179, now seen corresponding path program 2 times [2022-03-19 13:42:28,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:42:28,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020208841] [2022-03-19 13:42:28,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:42:28,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:42:28,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:42:28,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:42:28,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:42:28,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 13:42:28,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:42:28,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-19 13:42:28,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:42:28,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-19 13:42:28,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:42:28,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 13:42:28,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:42:28,918 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-19 13:42:28,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:42:28,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020208841] [2022-03-19 13:42:28,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020208841] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 13:42:28,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324315737] [2022-03-19 13:42:28,918 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 13:42:28,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 13:42:28,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 13:42:28,919 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 13:42:28,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-19 13:42:29,437 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-19 13:42:29,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 13:42:29,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 912 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-19 13:42:29,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 13:42:29,694 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-19 13:42:29,694 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-19 13:42:29,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324315737] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:42:29,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-19 13:42:29,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 15 [2022-03-19 13:42:29,695 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:42:29,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [621791231] [2022-03-19 13:42:29,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [621791231] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:42:29,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:42:29,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-19 13:42:29,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650000990] [2022-03-19 13:42:29,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:42:29,695 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-19 13:42:29,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:42:29,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-19 13:42:29,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-03-19 13:42:29,696 INFO L87 Difference]: Start difference. First operand 1252 states and 1782 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 7 states have internal predecessors, (51), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 13:42:30,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:42:30,104 INFO L93 Difference]: Finished difference Result 1264 states and 1794 transitions. [2022-03-19 13:42:30,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-19 13:42:30,105 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 7 states have internal predecessors, (51), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 63 [2022-03-19 13:42:30,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:42:30,108 INFO L225 Difference]: With dead ends: 1264 [2022-03-19 13:42:30,108 INFO L226 Difference]: Without dead ends: 1231 [2022-03-19 13:42:30,108 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-03-19 13:42:30,109 INFO L912 BasicCegarLoop]: 934 mSDtfsCounter, 4 mSDsluCounter, 6458 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 7392 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-19 13:42:30,109 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 7392 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-19 13:42:30,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2022-03-19 13:42:30,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 1231. [2022-03-19 13:42:30,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1231 states, 950 states have (on average 1.391578947368421) internal successors, (1322), 956 states have internal predecessors, (1322), 187 states have call successors, (187), 81 states have call predecessors, (187), 93 states have return successors, (251), 193 states have call predecessors, (251), 180 states have call successors, (251) [2022-03-19 13:42:30,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 1760 transitions. [2022-03-19 13:42:30,376 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 1760 transitions. Word has length 63 [2022-03-19 13:42:30,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:42:30,376 INFO L478 AbstractCegarLoop]: Abstraction has 1231 states and 1760 transitions. [2022-03-19 13:42:30,376 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 7 states have internal predecessors, (51), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 13:42:30,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 1760 transitions. [2022-03-19 13:42:30,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-19 13:42:30,378 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:42:30,378 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:42:30,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-19 13:42:30,598 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-03-19 13:42:30,599 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:42:30,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:42:30,599 INFO L85 PathProgramCache]: Analyzing trace with hash -388507538, now seen corresponding path program 1 times [2022-03-19 13:42:30,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:42:30,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [452845458] [2022-03-19 13:42:30,600 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:42:30,600 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:42:30,600 INFO L85 PathProgramCache]: Analyzing trace with hash -388507538, now seen corresponding path program 2 times [2022-03-19 13:42:30,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:42:30,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416951362] [2022-03-19 13:42:30,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:42:30,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:42:30,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:42:30,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:42:30,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:42:30,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 13:42:30,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:42:30,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-19 13:42:30,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:42:30,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-03-19 13:42:30,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:42:30,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-03-19 13:42:30,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:42:30,844 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-19 13:42:30,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:42:30,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416951362] [2022-03-19 13:42:30,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416951362] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:42:30,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:42:30,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 13:42:30,844 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:42:30,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [452845458] [2022-03-19 13:42:30,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [452845458] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:42:30,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:42:30,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 13:42:30,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105123235] [2022-03-19 13:42:30,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:42:30,845 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-19 13:42:30,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:42:30,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-19 13:42:30,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-03-19 13:42:30,845 INFO L87 Difference]: Start difference. First operand 1231 states and 1760 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (10), 8 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-19 13:42:37,603 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:42:39,697 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:42:40,934 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:42:43,710 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:42:45,733 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:42:47,817 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:42:50,885 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:42:53,116 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:42:54,196 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:42:56,392 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:42:58,327 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:42:59,652 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:43:01,639 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:43:03,669 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:43:03,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:43:03,848 INFO L93 Difference]: Finished difference Result 1599 states and 2367 transitions. [2022-03-19 13:43:03,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-19 13:43:03,849 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (10), 8 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 67 [2022-03-19 13:43:03,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:43:03,853 INFO L225 Difference]: With dead ends: 1599 [2022-03-19 13:43:03,853 INFO L226 Difference]: Without dead ends: 1519 [2022-03-19 13:43:03,854 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2022-03-19 13:43:03,854 INFO L912 BasicCegarLoop]: 759 mSDtfsCounter, 1621 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 1677 mSolverCounterSat, 750 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1646 SdHoareTripleChecker+Valid, 1588 SdHoareTripleChecker+Invalid, 2435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 750 IncrementalHoareTripleChecker+Valid, 1677 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.2s IncrementalHoareTripleChecker+Time [2022-03-19 13:43:03,855 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1646 Valid, 1588 Invalid, 2435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [750 Valid, 1677 Invalid, 8 Unknown, 0 Unchecked, 32.2s Time] [2022-03-19 13:43:03,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1519 states. [2022-03-19 13:43:04,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1519 to 1220. [2022-03-19 13:43:04,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1220 states, 943 states have (on average 1.3923647932131495) internal successors, (1313), 949 states have internal predecessors, (1313), 185 states have call successors, (185), 79 states have call predecessors, (185), 91 states have return successors, (249), 191 states have call predecessors, (249), 178 states have call successors, (249) [2022-03-19 13:43:04,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 1747 transitions. [2022-03-19 13:43:04,157 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 1747 transitions. Word has length 67 [2022-03-19 13:43:04,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:43:04,157 INFO L478 AbstractCegarLoop]: Abstraction has 1220 states and 1747 transitions. [2022-03-19 13:43:04,157 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (10), 8 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-19 13:43:04,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 1747 transitions. [2022-03-19 13:43:04,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-19 13:43:04,159 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:43:04,159 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:43:04,159 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-03-19 13:43:04,159 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:43:04,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:43:04,160 INFO L85 PathProgramCache]: Analyzing trace with hash 629303588, now seen corresponding path program 1 times [2022-03-19 13:43:04,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:43:04,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1370774670] [2022-03-19 13:43:04,161 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:43:04,161 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:43:04,161 INFO L85 PathProgramCache]: Analyzing trace with hash 629303588, now seen corresponding path program 2 times [2022-03-19 13:43:04,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:43:04,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169785337] [2022-03-19 13:43:04,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:43:04,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:43:04,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:43:04,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:43:04,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:43:04,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 13:43:04,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:43:04,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-19 13:43:04,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:43:04,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-19 13:43:04,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:43:04,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 13:43:04,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:43:04,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:43:04,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:43:04,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-19 13:43:04,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:43:04,491 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-19 13:43:04,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:43:04,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169785337] [2022-03-19 13:43:04,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169785337] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:43:04,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:43:04,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 13:43:04,492 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:43:04,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1370774670] [2022-03-19 13:43:04,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1370774670] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:43:04,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:43:04,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 13:43:04,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773219818] [2022-03-19 13:43:04,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:43:04,493 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-19 13:43:04,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:43:04,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-19 13:43:04,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-03-19 13:43:04,493 INFO L87 Difference]: Start difference. First operand 1220 states and 1747 transitions. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-19 13:43:08,401 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:43:15,184 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:43:17,216 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:43:19,246 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:43:21,620 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:43:24,415 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:43:29,097 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:43:30,614 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:43:32,635 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:43:34,004 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:43:35,732 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:43:38,624 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:43:41,164 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:43:44,434 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:43:46,496 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:43:49,701 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:43:53,812 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:43:55,841 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:43:56,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:43:56,141 INFO L93 Difference]: Finished difference Result 1571 states and 2344 transitions. [2022-03-19 13:43:56,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-19 13:43:56,142 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2022-03-19 13:43:56,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:43:56,146 INFO L225 Difference]: With dead ends: 1571 [2022-03-19 13:43:56,146 INFO L226 Difference]: Without dead ends: 1539 [2022-03-19 13:43:56,146 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-03-19 13:43:56,146 INFO L912 BasicCegarLoop]: 812 mSDtfsCounter, 1176 mSDsluCounter, 1156 mSDsCounter, 0 mSdLazyCounter, 3575 mSolverCounterSat, 649 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1206 SdHoareTripleChecker+Valid, 1968 SdHoareTripleChecker+Invalid, 4236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 649 IncrementalHoareTripleChecker+Valid, 3575 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.8s IncrementalHoareTripleChecker+Time [2022-03-19 13:43:56,147 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1206 Valid, 1968 Invalid, 4236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [649 Valid, 3575 Invalid, 12 Unknown, 0 Unchecked, 50.8s Time] [2022-03-19 13:43:56,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1539 states. [2022-03-19 13:43:56,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1539 to 1221. [2022-03-19 13:43:56,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1221 states, 944 states have (on average 1.3919491525423728) internal successors, (1314), 950 states have internal predecessors, (1314), 185 states have call successors, (185), 79 states have call predecessors, (185), 91 states have return successors, (249), 191 states have call predecessors, (249), 178 states have call successors, (249) [2022-03-19 13:43:56,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1221 states to 1221 states and 1748 transitions. [2022-03-19 13:43:56,472 INFO L78 Accepts]: Start accepts. Automaton has 1221 states and 1748 transitions. Word has length 70 [2022-03-19 13:43:56,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:43:56,472 INFO L478 AbstractCegarLoop]: Abstraction has 1221 states and 1748 transitions. [2022-03-19 13:43:56,472 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-19 13:43:56,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1221 states and 1748 transitions. [2022-03-19 13:43:56,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-19 13:43:56,473 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:43:56,473 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:43:56,473 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-03-19 13:43:56,474 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:43:56,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:43:56,474 INFO L85 PathProgramCache]: Analyzing trace with hash 769852198, now seen corresponding path program 1 times [2022-03-19 13:43:56,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:43:56,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1883976426] [2022-03-19 13:43:56,475 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:43:56,475 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:43:56,475 INFO L85 PathProgramCache]: Analyzing trace with hash 769852198, now seen corresponding path program 2 times [2022-03-19 13:43:56,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:43:56,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665309592] [2022-03-19 13:43:56,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:43:56,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:43:56,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:43:56,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:43:56,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:43:56,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 13:43:56,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:43:56,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-19 13:43:56,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:43:56,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-19 13:43:56,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:43:56,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 13:43:56,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:43:56,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:43:56,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:43:56,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-19 13:43:56,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:43:56,751 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-19 13:43:56,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:43:56,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665309592] [2022-03-19 13:43:56,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665309592] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:43:56,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:43:56,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 13:43:56,752 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:43:56,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1883976426] [2022-03-19 13:43:56,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1883976426] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:43:56,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:43:56,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 13:43:56,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368740753] [2022-03-19 13:43:56,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:43:56,752 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-19 13:43:56,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:43:56,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-19 13:43:56,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-03-19 13:43:56,753 INFO L87 Difference]: Start difference. First operand 1221 states and 1748 transitions. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-19 13:44:05,362 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:44:08,194 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:44:10,230 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:44:12,067 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:44:15,662 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:44:16,982 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:44:19,223 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:44:24,918 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:44:26,948 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:44:28,973 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:44:30,277 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:44:32,706 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:44:35,560 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:44:36,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:44:36,464 INFO L93 Difference]: Finished difference Result 1555 states and 2323 transitions. [2022-03-19 13:44:36,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-19 13:44:36,465 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 70 [2022-03-19 13:44:36,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:44:36,469 INFO L225 Difference]: With dead ends: 1555 [2022-03-19 13:44:36,469 INFO L226 Difference]: Without dead ends: 1548 [2022-03-19 13:44:36,469 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-03-19 13:44:36,470 INFO L912 BasicCegarLoop]: 797 mSDtfsCounter, 1765 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 2608 mSolverCounterSat, 1107 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1795 SdHoareTripleChecker+Valid, 1657 SdHoareTripleChecker+Invalid, 3725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1107 IncrementalHoareTripleChecker+Valid, 2608 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.8s IncrementalHoareTripleChecker+Time [2022-03-19 13:44:36,470 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1795 Valid, 1657 Invalid, 3725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1107 Valid, 2608 Invalid, 10 Unknown, 0 Unchecked, 38.8s Time] [2022-03-19 13:44:36,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1548 states. [2022-03-19 13:44:36,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1548 to 1235. [2022-03-19 13:44:36,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1235 states, 957 states have (on average 1.3887147335423198) internal successors, (1329), 963 states have internal predecessors, (1329), 185 states have call successors, (185), 79 states have call predecessors, (185), 92 states have return successors, (250), 192 states have call predecessors, (250), 178 states have call successors, (250) [2022-03-19 13:44:36,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1235 states to 1235 states and 1764 transitions. [2022-03-19 13:44:36,778 INFO L78 Accepts]: Start accepts. Automaton has 1235 states and 1764 transitions. Word has length 70 [2022-03-19 13:44:36,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:44:36,778 INFO L478 AbstractCegarLoop]: Abstraction has 1235 states and 1764 transitions. [2022-03-19 13:44:36,778 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-19 13:44:36,778 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 1764 transitions. [2022-03-19 13:44:36,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-19 13:44:36,780 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:44:36,780 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:44:36,780 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-03-19 13:44:36,780 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:44:36,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:44:36,781 INFO L85 PathProgramCache]: Analyzing trace with hash 850412718, now seen corresponding path program 1 times [2022-03-19 13:44:36,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:44:36,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [92868343] [2022-03-19 13:44:36,782 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:44:36,782 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:44:36,782 INFO L85 PathProgramCache]: Analyzing trace with hash 850412718, now seen corresponding path program 2 times [2022-03-19 13:44:36,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:44:36,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478624460] [2022-03-19 13:44:36,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:44:36,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:44:36,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:44:36,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:44:36,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:44:36,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 13:44:36,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:44:36,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-19 13:44:36,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:44:37,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-19 13:44:37,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:44:37,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 13:44:37,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:44:37,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 13:44:37,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:44:37,108 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-19 13:44:37,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:44:37,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478624460] [2022-03-19 13:44:37,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478624460] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 13:44:37,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415992980] [2022-03-19 13:44:37,108 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 13:44:37,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 13:44:37,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 13:44:37,110 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 13:44:37,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-19 13:44:37,645 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-19 13:44:37,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 13:44:37,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 1008 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-19 13:44:37,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 13:44:37,903 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-19 13:44:37,903 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-19 13:44:37,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415992980] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:44:37,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-19 13:44:37,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [9] total 18 [2022-03-19 13:44:37,903 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:44:37,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [92868343] [2022-03-19 13:44:37,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [92868343] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:44:37,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:44:37,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 13:44:37,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100293728] [2022-03-19 13:44:37,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:44:37,904 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-19 13:44:37,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:44:37,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-19 13:44:37,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2022-03-19 13:44:37,905 INFO L87 Difference]: Start difference. First operand 1235 states and 1764 transitions. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-19 13:44:38,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:44:38,367 INFO L93 Difference]: Finished difference Result 1841 states and 2619 transitions. [2022-03-19 13:44:38,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-19 13:44:38,368 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) Word has length 69 [2022-03-19 13:44:38,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:44:38,372 INFO L225 Difference]: With dead ends: 1841 [2022-03-19 13:44:38,372 INFO L226 Difference]: Without dead ends: 1267 [2022-03-19 13:44:38,374 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2022-03-19 13:44:38,375 INFO L912 BasicCegarLoop]: 914 mSDtfsCounter, 10 mSDsluCounter, 7182 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 8096 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-19 13:44:38,375 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 8096 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-19 13:44:38,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1267 states. [2022-03-19 13:44:38,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1267 to 1250. [2022-03-19 13:44:38,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 970 states have (on average 1.3876288659793814) internal successors, (1346), 977 states have internal predecessors, (1346), 185 states have call successors, (185), 79 states have call predecessors, (185), 94 states have return successors, (258), 193 states have call predecessors, (258), 178 states have call successors, (258) [2022-03-19 13:44:38,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1789 transitions. [2022-03-19 13:44:38,695 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1789 transitions. Word has length 69 [2022-03-19 13:44:38,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:44:38,695 INFO L478 AbstractCegarLoop]: Abstraction has 1250 states and 1789 transitions. [2022-03-19 13:44:38,695 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-19 13:44:38,695 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1789 transitions. [2022-03-19 13:44:38,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-19 13:44:38,697 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:44:38,697 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:44:38,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-19 13:44:38,917 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 13:44:38,918 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:44:38,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:44:38,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1111213548, now seen corresponding path program 1 times [2022-03-19 13:44:38,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:44:38,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [685046393] [2022-03-19 13:44:38,919 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:44:38,919 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:44:38,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1111213548, now seen corresponding path program 2 times [2022-03-19 13:44:38,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:44:38,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612121668] [2022-03-19 13:44:38,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:44:38,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:44:38,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:44:39,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:44:39,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:44:39,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 13:44:39,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:44:39,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-19 13:44:39,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:44:39,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-19 13:44:39,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:44:39,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-19 13:44:39,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:44:39,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 13:44:39,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:44:39,212 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-19 13:44:39,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:44:39,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612121668] [2022-03-19 13:44:39,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612121668] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 13:44:39,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923809320] [2022-03-19 13:44:39,213 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 13:44:39,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 13:44:39,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 13:44:39,214 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 13:44:39,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-19 13:44:39,738 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-19 13:44:39,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 13:44:39,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 1012 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-19 13:44:39,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 13:44:40,047 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-19 13:44:40,048 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-19 13:44:40,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923809320] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:44:40,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-19 13:44:40,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [9] total 18 [2022-03-19 13:44:40,049 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:44:40,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [685046393] [2022-03-19 13:44:40,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [685046393] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:44:40,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:44:40,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 13:44:40,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623268489] [2022-03-19 13:44:40,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:44:40,049 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-19 13:44:40,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:44:40,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-19 13:44:40,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2022-03-19 13:44:40,050 INFO L87 Difference]: Start difference. First operand 1250 states and 1789 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 8 states have internal predecessors, (57), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-19 13:44:40,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:44:40,508 INFO L93 Difference]: Finished difference Result 1283 states and 1824 transitions. [2022-03-19 13:44:40,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-19 13:44:40,508 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 8 states have internal predecessors, (57), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) Word has length 71 [2022-03-19 13:44:40,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:44:40,511 INFO L225 Difference]: With dead ends: 1283 [2022-03-19 13:44:40,511 INFO L226 Difference]: Without dead ends: 1267 [2022-03-19 13:44:40,512 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2022-03-19 13:44:40,512 INFO L912 BasicCegarLoop]: 921 mSDtfsCounter, 10 mSDsluCounter, 7232 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 8153 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-19 13:44:40,512 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 8153 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-19 13:44:40,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1267 states. [2022-03-19 13:44:40,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1267 to 1250. [2022-03-19 13:44:40,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 970 states have (on average 1.3876288659793814) internal successors, (1346), 977 states have internal predecessors, (1346), 185 states have call successors, (185), 79 states have call predecessors, (185), 94 states have return successors, (257), 193 states have call predecessors, (257), 178 states have call successors, (257) [2022-03-19 13:44:40,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1788 transitions. [2022-03-19 13:44:40,827 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1788 transitions. Word has length 71 [2022-03-19 13:44:40,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:44:40,827 INFO L478 AbstractCegarLoop]: Abstraction has 1250 states and 1788 transitions. [2022-03-19 13:44:40,827 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 8 states have internal predecessors, (57), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-19 13:44:40,827 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1788 transitions. [2022-03-19 13:44:40,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-19 13:44:40,829 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:44:40,829 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:44:40,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-19 13:44:41,047 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-03-19 13:44:41,048 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:44:41,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:44:41,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1896674077, now seen corresponding path program 1 times [2022-03-19 13:44:41,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:44:41,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [856615720] [2022-03-19 13:44:41,049 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:44:41,049 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:44:41,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1896674077, now seen corresponding path program 2 times [2022-03-19 13:44:41,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:44:41,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922124958] [2022-03-19 13:44:41,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:44:41,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:44:41,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:44:41,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:44:41,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:44:41,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 13:44:41,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:44:41,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-19 13:44:41,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:44:41,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-19 13:44:41,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:44:41,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 13:44:41,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:44:41,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:44:41,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:44:41,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-19 13:44:41,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:44:41,396 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-19 13:44:41,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:44:41,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922124958] [2022-03-19 13:44:41,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922124958] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:44:41,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:44:41,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 13:44:41,397 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:44:41,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [856615720] [2022-03-19 13:44:41,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [856615720] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:44:41,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:44:41,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 13:44:41,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354656361] [2022-03-19 13:44:41,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:44:41,399 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-19 13:44:41,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:44:41,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-19 13:44:41,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-03-19 13:44:41,399 INFO L87 Difference]: Start difference. First operand 1250 states and 1788 transitions. Second operand has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-19 13:44:44,753 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:44:49,752 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:44:51,812 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:44:55,156 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:44:56,968 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:44:58,993 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:45:01,022 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:45:02,728 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:45:05,835 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:45:08,573 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:45:12,376 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:45:14,411 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:45:16,938 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:45:17,996 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:45:21,242 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:45:23,291 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:45:25,322 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:45:28,011 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:45:29,263 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:45:31,525 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:45:35,135 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:45:37,160 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:45:37,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:45:37,377 INFO L93 Difference]: Finished difference Result 1573 states and 2352 transitions. [2022-03-19 13:45:37,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-19 13:45:37,378 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 71 [2022-03-19 13:45:37,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:45:37,381 INFO L225 Difference]: With dead ends: 1573 [2022-03-19 13:45:37,381 INFO L226 Difference]: Without dead ends: 1568 [2022-03-19 13:45:37,382 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=213, Invalid=657, Unknown=0, NotChecked=0, Total=870 [2022-03-19 13:45:37,382 INFO L912 BasicCegarLoop]: 728 mSDtfsCounter, 2439 mSDsluCounter, 1256 mSDsCounter, 0 mSdLazyCounter, 3152 mSolverCounterSat, 1293 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2497 SdHoareTripleChecker+Valid, 1984 SdHoareTripleChecker+Invalid, 4459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1293 IncrementalHoareTripleChecker+Valid, 3152 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54.5s IncrementalHoareTripleChecker+Time [2022-03-19 13:45:37,383 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2497 Valid, 1984 Invalid, 4459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1293 Valid, 3152 Invalid, 14 Unknown, 0 Unchecked, 54.5s Time] [2022-03-19 13:45:37,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2022-03-19 13:45:37,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1250. [2022-03-19 13:45:37,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 970 states have (on average 1.3865979381443299) internal successors, (1345), 977 states have internal predecessors, (1345), 185 states have call successors, (185), 79 states have call predecessors, (185), 94 states have return successors, (257), 193 states have call predecessors, (257), 178 states have call successors, (257) [2022-03-19 13:45:37,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1787 transitions. [2022-03-19 13:45:37,752 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1787 transitions. Word has length 71 [2022-03-19 13:45:37,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:45:37,753 INFO L478 AbstractCegarLoop]: Abstraction has 1250 states and 1787 transitions. [2022-03-19 13:45:37,753 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-19 13:45:37,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1787 transitions. [2022-03-19 13:45:37,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-19 13:45:37,755 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:45:37,755 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:45:37,755 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-03-19 13:45:37,755 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:45:37,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:45:37,756 INFO L85 PathProgramCache]: Analyzing trace with hash -346741201, now seen corresponding path program 1 times [2022-03-19 13:45:37,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:45:37,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [180262502] [2022-03-19 13:45:37,756 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:45:37,756 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:45:37,757 INFO L85 PathProgramCache]: Analyzing trace with hash -346741201, now seen corresponding path program 2 times [2022-03-19 13:45:37,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:45:37,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858003332] [2022-03-19 13:45:37,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:45:37,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:45:37,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:45:37,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:45:37,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:45:37,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 13:45:37,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:45:37,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-19 13:45:37,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:45:37,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-19 13:45:37,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:45:38,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:45:38,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:45:38,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 13:45:38,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:45:38,019 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-19 13:45:38,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:45:38,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858003332] [2022-03-19 13:45:38,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858003332] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 13:45:38,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837753388] [2022-03-19 13:45:38,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 13:45:38,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 13:45:38,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 13:45:38,021 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 13:45:38,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-19 13:45:38,592 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-19 13:45:38,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 13:45:38,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 1023 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-19 13:45:38,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 13:45:38,860 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-19 13:45:38,861 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-19 13:45:38,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837753388] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:45:38,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-19 13:45:38,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [9] total 19 [2022-03-19 13:45:38,861 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:45:38,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [180262502] [2022-03-19 13:45:38,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [180262502] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:45:38,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:45:38,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 13:45:38,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578861771] [2022-03-19 13:45:38,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:45:38,862 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-19 13:45:38,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:45:38,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-19 13:45:38,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2022-03-19 13:45:38,862 INFO L87 Difference]: Start difference. First operand 1250 states and 1787 transitions. Second operand has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 9 states have internal predecessors, (58), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-19 13:45:39,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:45:39,343 INFO L93 Difference]: Finished difference Result 1284 states and 1823 transitions. [2022-03-19 13:45:39,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-19 13:45:39,343 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 9 states have internal predecessors, (58), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) Word has length 72 [2022-03-19 13:45:39,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:45:39,347 INFO L225 Difference]: With dead ends: 1284 [2022-03-19 13:45:39,347 INFO L226 Difference]: Without dead ends: 1267 [2022-03-19 13:45:39,348 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2022-03-19 13:45:39,348 INFO L912 BasicCegarLoop]: 921 mSDtfsCounter, 12 mSDsluCounter, 8139 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 9060 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-19 13:45:39,348 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 9060 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-19 13:45:39,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1267 states. [2022-03-19 13:45:39,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1267 to 1250. [2022-03-19 13:45:39,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 970 states have (on average 1.3865979381443299) internal successors, (1345), 977 states have internal predecessors, (1345), 185 states have call successors, (185), 79 states have call predecessors, (185), 94 states have return successors, (256), 193 states have call predecessors, (256), 178 states have call successors, (256) [2022-03-19 13:45:39,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1786 transitions. [2022-03-19 13:45:39,687 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1786 transitions. Word has length 72 [2022-03-19 13:45:39,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:45:39,687 INFO L478 AbstractCegarLoop]: Abstraction has 1250 states and 1786 transitions. [2022-03-19 13:45:39,687 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 9 states have internal predecessors, (58), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-19 13:45:39,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1786 transitions. [2022-03-19 13:45:39,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-19 13:45:39,689 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:45:39,689 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:45:39,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-19 13:45:39,910 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 13:45:39,910 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:45:39,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:45:39,911 INFO L85 PathProgramCache]: Analyzing trace with hash 101300578, now seen corresponding path program 1 times [2022-03-19 13:45:39,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:45:39,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1977899106] [2022-03-19 13:45:39,912 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:45:39,912 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:45:39,912 INFO L85 PathProgramCache]: Analyzing trace with hash 101300578, now seen corresponding path program 2 times [2022-03-19 13:45:39,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:45:39,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215408442] [2022-03-19 13:45:39,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:45:39,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:45:39,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:45:40,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:45:40,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:45:40,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 13:45:40,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:45:40,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-19 13:45:40,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:45:40,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-19 13:45:40,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:45:40,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 13:45:40,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:45:40,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 13:45:40,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:45:40,179 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-19 13:45:40,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:45:40,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215408442] [2022-03-19 13:45:40,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215408442] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 13:45:40,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190818677] [2022-03-19 13:45:40,180 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 13:45:40,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 13:45:40,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 13:45:40,181 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 13:45:40,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-19 13:45:40,729 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-19 13:45:40,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 13:45:40,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 1008 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-19 13:45:40,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 13:45:41,025 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-19 13:45:41,025 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-19 13:45:41,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190818677] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:45:41,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-19 13:45:41,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [9] total 18 [2022-03-19 13:45:41,026 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:45:41,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1977899106] [2022-03-19 13:45:41,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1977899106] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:45:41,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:45:41,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 13:45:41,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60240120] [2022-03-19 13:45:41,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:45:41,026 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-19 13:45:41,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:45:41,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-19 13:45:41,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2022-03-19 13:45:41,027 INFO L87 Difference]: Start difference. First operand 1250 states and 1786 transitions. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-19 13:45:41,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:45:41,517 INFO L93 Difference]: Finished difference Result 1588 states and 2250 transitions. [2022-03-19 13:45:41,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-19 13:45:41,517 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) Word has length 70 [2022-03-19 13:45:41,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:45:41,521 INFO L225 Difference]: With dead ends: 1588 [2022-03-19 13:45:41,521 INFO L226 Difference]: Without dead ends: 1279 [2022-03-19 13:45:41,522 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2022-03-19 13:45:41,523 INFO L912 BasicCegarLoop]: 929 mSDtfsCounter, 10 mSDsluCounter, 7274 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 8203 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-19 13:45:41,524 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 8203 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-19 13:45:41,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2022-03-19 13:45:41,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1265. [2022-03-19 13:45:41,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1265 states, 983 states have (on average 1.3855544252288912) internal successors, (1362), 991 states have internal predecessors, (1362), 185 states have call successors, (185), 79 states have call predecessors, (185), 96 states have return successors, (264), 194 states have call predecessors, (264), 178 states have call successors, (264) [2022-03-19 13:45:41,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1265 states to 1265 states and 1811 transitions. [2022-03-19 13:45:41,858 INFO L78 Accepts]: Start accepts. Automaton has 1265 states and 1811 transitions. Word has length 70 [2022-03-19 13:45:41,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:45:41,858 INFO L478 AbstractCegarLoop]: Abstraction has 1265 states and 1811 transitions. [2022-03-19 13:45:41,858 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-19 13:45:41,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1265 states and 1811 transitions. [2022-03-19 13:45:41,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-19 13:45:41,860 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:45:41,860 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:45:41,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-19 13:45:42,079 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 13:45:42,079 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:45:42,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:45:42,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1629803938, now seen corresponding path program 1 times [2022-03-19 13:45:42,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:45:42,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [157903139] [2022-03-19 13:45:42,081 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:45:42,081 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:45:42,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1629803938, now seen corresponding path program 2 times [2022-03-19 13:45:42,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:45:42,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002791808] [2022-03-19 13:45:42,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:45:42,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:45:42,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:45:42,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:45:42,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:45:42,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 13:45:42,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:45:42,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-19 13:45:42,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:45:42,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-19 13:45:42,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:45:42,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-19 13:45:42,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:45:42,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 13:45:42,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:45:42,351 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-19 13:45:42,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:45:42,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002791808] [2022-03-19 13:45:42,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002791808] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 13:45:42,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305911161] [2022-03-19 13:45:42,352 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 13:45:42,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 13:45:42,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 13:45:42,353 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 13:45:42,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-19 13:45:42,902 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-19 13:45:42,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 13:45:42,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 1012 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-19 13:45:42,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 13:45:43,170 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-19 13:45:43,170 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-19 13:45:43,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305911161] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:45:43,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-19 13:45:43,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [9] total 18 [2022-03-19 13:45:43,171 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:45:43,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [157903139] [2022-03-19 13:45:43,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [157903139] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:45:43,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:45:43,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 13:45:43,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078448506] [2022-03-19 13:45:43,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:45:43,171 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-19 13:45:43,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:45:43,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-19 13:45:43,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2022-03-19 13:45:43,172 INFO L87 Difference]: Start difference. First operand 1265 states and 1811 transitions. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 8 states have internal predecessors, (58), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-19 13:45:43,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:45:43,642 INFO L93 Difference]: Finished difference Result 1295 states and 1843 transitions. [2022-03-19 13:45:43,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-19 13:45:43,642 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 8 states have internal predecessors, (58), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) Word has length 72 [2022-03-19 13:45:43,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:45:43,646 INFO L225 Difference]: With dead ends: 1295 [2022-03-19 13:45:43,646 INFO L226 Difference]: Without dead ends: 1279 [2022-03-19 13:45:43,646 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2022-03-19 13:45:43,647 INFO L912 BasicCegarLoop]: 941 mSDtfsCounter, 10 mSDsluCounter, 7361 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 8302 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-19 13:45:43,647 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 8302 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-19 13:45:43,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2022-03-19 13:45:43,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1265. [2022-03-19 13:45:43,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1265 states, 983 states have (on average 1.3855544252288912) internal successors, (1362), 991 states have internal predecessors, (1362), 185 states have call successors, (185), 79 states have call predecessors, (185), 96 states have return successors, (263), 194 states have call predecessors, (263), 178 states have call successors, (263) [2022-03-19 13:45:43,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1265 states to 1265 states and 1810 transitions. [2022-03-19 13:45:43,989 INFO L78 Accepts]: Start accepts. Automaton has 1265 states and 1810 transitions. Word has length 72 [2022-03-19 13:45:43,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:45:43,990 INFO L478 AbstractCegarLoop]: Abstraction has 1265 states and 1810 transitions. [2022-03-19 13:45:43,990 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 8 states have internal predecessors, (58), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-19 13:45:43,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1265 states and 1810 transitions. [2022-03-19 13:45:43,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-19 13:45:43,991 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:45:43,991 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:45:44,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-19 13:45:44,207 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-03-19 13:45:44,208 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:45:44,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:45:44,208 INFO L85 PathProgramCache]: Analyzing trace with hash -101287646, now seen corresponding path program 1 times [2022-03-19 13:45:44,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:45:44,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1471185490] [2022-03-19 13:45:44,209 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:45:44,209 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:45:44,209 INFO L85 PathProgramCache]: Analyzing trace with hash -101287646, now seen corresponding path program 2 times [2022-03-19 13:45:44,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:45:44,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861461830] [2022-03-19 13:45:44,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:45:44,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:45:44,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:45:44,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:45:44,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:45:44,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 13:45:44,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:45:44,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-19 13:45:44,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:45:44,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-19 13:45:44,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:45:44,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 13:45:44,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:45:44,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 13:45:44,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:45:44,531 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-19 13:45:44,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:45:44,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861461830] [2022-03-19 13:45:44,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861461830] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 13:45:44,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225093894] [2022-03-19 13:45:44,531 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 13:45:44,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 13:45:44,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 13:45:44,533 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 13:45:44,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-19 13:45:45,083 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-19 13:45:45,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 13:45:45,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 1009 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-19 13:45:45,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 13:45:45,337 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-19 13:45:45,337 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-19 13:45:45,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225093894] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:45:45,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-19 13:45:45,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [9] total 18 [2022-03-19 13:45:45,338 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:45:45,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1471185490] [2022-03-19 13:45:45,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1471185490] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:45:45,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:45:45,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 13:45:45,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358719866] [2022-03-19 13:45:45,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:45:45,338 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-19 13:45:45,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:45:45,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-19 13:45:45,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2022-03-19 13:45:45,339 INFO L87 Difference]: Start difference. First operand 1265 states and 1810 transitions. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-19 13:45:45,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:45:45,852 INFO L93 Difference]: Finished difference Result 1855 states and 2635 transitions. [2022-03-19 13:45:45,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-19 13:45:45,853 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) Word has length 70 [2022-03-19 13:45:45,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:45:45,856 INFO L225 Difference]: With dead ends: 1855 [2022-03-19 13:45:45,857 INFO L226 Difference]: Without dead ends: 1280 [2022-03-19 13:45:45,858 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2022-03-19 13:45:45,858 INFO L912 BasicCegarLoop]: 928 mSDtfsCounter, 6 mSDsluCounter, 8154 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 9082 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-19 13:45:45,858 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 9082 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-19 13:45:45,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1280 states. [2022-03-19 13:45:46,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1280 to 1257. [2022-03-19 13:45:46,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1257 states, 976 states have (on average 1.3811475409836065) internal successors, (1348), 984 states have internal predecessors, (1348), 184 states have call successors, (184), 79 states have call predecessors, (184), 96 states have return successors, (262), 193 states have call predecessors, (262), 177 states have call successors, (262) [2022-03-19 13:45:46,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1257 states to 1257 states and 1794 transitions. [2022-03-19 13:45:46,203 INFO L78 Accepts]: Start accepts. Automaton has 1257 states and 1794 transitions. Word has length 70 [2022-03-19 13:45:46,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:45:46,203 INFO L478 AbstractCegarLoop]: Abstraction has 1257 states and 1794 transitions. [2022-03-19 13:45:46,203 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-19 13:45:46,203 INFO L276 IsEmpty]: Start isEmpty. Operand 1257 states and 1794 transitions. [2022-03-19 13:45:46,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-19 13:45:46,205 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:45:46,205 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:45:46,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-19 13:45:46,440 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-03-19 13:45:46,440 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:45:46,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:45:46,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1056087752, now seen corresponding path program 1 times [2022-03-19 13:45:46,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:45:46,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [809552165] [2022-03-19 13:45:46,441 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:45:46,441 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:45:46,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1056087752, now seen corresponding path program 2 times [2022-03-19 13:45:46,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:45:46,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25903173] [2022-03-19 13:45:46,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:45:46,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:45:46,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:45:46,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:45:46,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:45:46,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 13:45:46,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:45:46,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-19 13:45:46,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:45:46,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-19 13:45:46,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:45:46,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 13:45:46,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:45:46,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:45:46,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:45:46,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-19 13:45:46,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:45:46,769 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-19 13:45:46,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:45:46,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25903173] [2022-03-19 13:45:46,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25903173] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 13:45:46,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763295658] [2022-03-19 13:45:46,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 13:45:46,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 13:45:46,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 13:45:46,771 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 13:45:46,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-19 13:45:47,371 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-19 13:45:47,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 13:45:47,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 1033 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-19 13:45:47,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 13:45:47,498 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-19 13:45:47,499 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-19 13:45:47,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763295658] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:45:47,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-19 13:45:47,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2022-03-19 13:45:47,499 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:45:47,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [809552165] [2022-03-19 13:45:47,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [809552165] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:45:47,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:45:47,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 13:45:47,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918132253] [2022-03-19 13:45:47,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:45:47,500 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-19 13:45:47,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:45:47,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-19 13:45:47,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-03-19 13:45:47,500 INFO L87 Difference]: Start difference. First operand 1257 states and 1794 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-19 13:45:47,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:45:47,932 INFO L93 Difference]: Finished difference Result 2159 states and 3145 transitions. [2022-03-19 13:45:47,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-19 13:45:47,933 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2022-03-19 13:45:47,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:45:47,936 INFO L225 Difference]: With dead ends: 2159 [2022-03-19 13:45:47,937 INFO L226 Difference]: Without dead ends: 1267 [2022-03-19 13:45:47,939 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-03-19 13:45:47,939 INFO L912 BasicCegarLoop]: 909 mSDtfsCounter, 2 mSDsluCounter, 1803 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2712 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-19 13:45:47,939 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 2712 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-19 13:45:47,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1267 states. [2022-03-19 13:45:48,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1267 to 1267. [2022-03-19 13:45:48,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1267 states, 984 states have (on average 1.3800813008130082) internal successors, (1358), 994 states have internal predecessors, (1358), 184 states have call successors, (184), 79 states have call predecessors, (184), 98 states have return successors, (264), 193 states have call predecessors, (264), 177 states have call successors, (264) [2022-03-19 13:45:48,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1267 states to 1267 states and 1806 transitions. [2022-03-19 13:45:48,280 INFO L78 Accepts]: Start accepts. Automaton has 1267 states and 1806 transitions. Word has length 72 [2022-03-19 13:45:48,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:45:48,280 INFO L478 AbstractCegarLoop]: Abstraction has 1267 states and 1806 transitions. [2022-03-19 13:45:48,281 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-19 13:45:48,281 INFO L276 IsEmpty]: Start isEmpty. Operand 1267 states and 1806 transitions. [2022-03-19 13:45:48,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-19 13:45:48,283 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:45:48,283 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:45:48,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-19 13:45:48,504 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-03-19 13:45:48,504 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:45:48,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:45:48,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1588731855, now seen corresponding path program 1 times [2022-03-19 13:45:48,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:45:48,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [348964739] [2022-03-19 13:45:48,506 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:45:48,506 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:45:48,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1588731855, now seen corresponding path program 2 times [2022-03-19 13:45:48,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:45:48,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724208311] [2022-03-19 13:45:48,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:45:48,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:45:48,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:45:48,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:45:48,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:45:48,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 13:45:48,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:45:48,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-19 13:45:48,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:45:48,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-03-19 13:45:48,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:45:48,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-03-19 13:45:48,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:45:48,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-03-19 13:45:48,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:45:48,723 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-19 13:45:48,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:45:48,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724208311] [2022-03-19 13:45:48,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724208311] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:45:48,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:45:48,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-19 13:45:48,724 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:45:48,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [348964739] [2022-03-19 13:45:48,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [348964739] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:45:48,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:45:48,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-19 13:45:48,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897425573] [2022-03-19 13:45:48,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:45:48,725 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-19 13:45:48,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:45:48,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-19 13:45:48,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-03-19 13:45:48,725 INFO L87 Difference]: Start difference. First operand 1267 states and 1806 transitions. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-19 13:45:57,908 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:45:59,937 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:46:01,960 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:46:04,546 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:46:07,460 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:46:09,619 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:46:11,804 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:46:13,835 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:46:16,299 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:46:18,968 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []