/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/kbfiltr.i.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-07 00:58:36,633 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-07 00:58:36,641 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-07 00:58:36,687 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-07 00:58:36,703 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-07 00:58:36,704 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-07 00:58:36,704 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-07 00:58:36,705 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-07 00:58:36,706 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-07 00:58:36,706 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-07 00:58:36,707 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-07 00:58:36,710 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-07 00:58:36,711 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-07 00:58:36,711 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-07 00:58:36,712 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-07 00:58:36,713 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-07 00:58:36,714 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-07 00:58:36,716 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-07 00:58:36,721 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-07 00:58:36,722 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-07 00:58:36,724 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-07 00:58:36,725 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-04-07 00:58:36,732 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-07 00:58:36,732 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-07 00:58:36,733 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-07 00:58:36,733 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-07 00:58:36,733 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-07 00:58:36,733 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-07 00:58:36,733 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-07 00:58:36,734 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-07 00:58:36,734 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-07 00:58:36,734 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-07 00:58:36,734 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-07 00:58:36,734 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-07 00:58:36,734 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-07 00:58:36,734 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-07 00:58:36,735 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-07 00:58:36,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-07 00:58:36,735 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-07 00:58:36,735 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-07 00:58:36,735 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-07 00:58:36,735 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-07 00:58:36,735 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-07 00:58:36,736 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-04-07 00:58:36,736 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-07 00:58:36,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-07 00:58:37,008 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-07 00:58:37,011 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-07 00:58:37,011 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-07 00:58:37,012 INFO L275 PluginConnector]: CDTParser initialized [2022-04-07 00:58:37,013 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers/kbfiltr.i.cil-2.c [2022-04-07 00:58:37,063 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/100281d4e/904e905ca3da4724b3a6916caf9b67f4/FLAGc3ecfdb6d [2022-04-07 00:58:37,666 INFO L306 CDTParser]: Found 1 translation units. [2022-04-07 00:58:37,666 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/kbfiltr.i.cil-2.c [2022-04-07 00:58:37,698 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/100281d4e/904e905ca3da4724b3a6916caf9b67f4/FLAGc3ecfdb6d [2022-04-07 00:58:38,089 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/100281d4e/904e905ca3da4724b3a6916caf9b67f4 [2022-04-07 00:58:38,091 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-07 00:58:38,092 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-07 00:58:38,093 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-07 00:58:38,093 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-07 00:58:38,096 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-07 00:58:38,097 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.04 12:58:38" (1/1) ... [2022-04-07 00:58:38,098 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2572e71f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:58:38, skipping insertion in model container [2022-04-07 00:58:38,098 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.04 12:58:38" (1/1) ... [2022-04-07 00:58:38,104 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-07 00:58:38,171 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-07 00:58:38,510 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/kbfiltr.i.cil-2.c[62209,62222] [2022-04-07 00:58:38,642 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-07 00:58:38,651 INFO L203 MainTranslator]: Completed pre-run [2022-04-07 00:58:38,690 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/kbfiltr.i.cil-2.c[62209,62222] [2022-04-07 00:58:38,825 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-07 00:58:38,851 INFO L208 MainTranslator]: Completed translation [2022-04-07 00:58:38,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:58:38 WrapperNode [2022-04-07 00:58:38,852 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-07 00:58:38,853 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-07 00:58:38,853 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-07 00:58:38,853 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-07 00:58:38,863 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:58:38" (1/1) ... [2022-04-07 00:58:38,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:58:38" (1/1) ... [2022-04-07 00:58:38,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:58:38" (1/1) ... [2022-04-07 00:58:38,906 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:58:38" (1/1) ... [2022-04-07 00:58:38,974 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:58:38" (1/1) ... [2022-04-07 00:58:38,983 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:58:38" (1/1) ... [2022-04-07 00:58:38,992 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:58:38" (1/1) ... [2022-04-07 00:58:39,018 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-07 00:58:39,020 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-07 00:58:39,020 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-07 00:58:39,020 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-07 00:58:39,021 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:58:38" (1/1) ... [2022-04-07 00:58:39,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-07 00:58:39,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 00:58:39,059 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-07 00:58:39,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-07 00:58:39,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-07 00:58:39,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-07 00:58:39,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~PVOID~0~X~~PVOID~0~X~$Pointer$~X~$Pointer$~X~~PBOOLEAN~0~TO~~NTSTATUS~0 [2022-04-07 00:58:39,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~PVOID~0~X~~PKEYBOARD_INPUT_DATA~0~X~~POUTPUT_PACKET~0~X~~UCHAR~0~X~~PUCHAR~0~X~~PBOOLEAN~0~X~~PKEYBOARD_SCAN_STATE~0~TO~~BOOLEAN~0 [2022-04-07 00:58:39,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~PVOID~0~X~~PVOID~0~X~~PVOID~0~X~~PVOID~0~TO~VOID [2022-04-07 00:58:39,109 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-07 00:58:39,109 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-07 00:58:39,109 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedIncrement [2022-04-07 00:58:39,109 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedDecrement [2022-04-07 00:58:39,109 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_IoCtl [2022-04-07 00:58:39,109 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-04-07 00:58:39,110 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-04-07 00:58:39,110 INFO L138 BoogieDeclarations]: Found implementation of procedure DriverEntry [2022-04-07 00:58:39,110 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_AddDevice [2022-04-07 00:58:39,111 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2022-04-07 00:58:39,112 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_CreateClose [2022-04-07 00:58:39,113 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_DispatchPassThrough [2022-04-07 00:58:39,113 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_InternIoCtl [2022-04-07 00:58:39,113 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_PnP [2022-04-07 00:58:39,113 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Power [2022-04-07 00:58:39,113 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_InitializationRoutine [2022-04-07 00:58:39,113 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_IsrHook [2022-04-07 00:58:39,113 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_ServiceCallback [2022-04-07 00:58:39,114 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Unload [2022-04-07 00:58:39,114 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-04-07 00:58:39,114 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-07 00:58:39,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAcquireFastMutex [2022-04-07 00:58:39,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ExReleaseFastMutex [2022-04-07 00:58:39,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2022-04-07 00:58:39,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ExFreePool [2022-04-07 00:58:39,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertHeadList [2022-04-07 00:58:39,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertTailList [2022-04-07 00:58:39,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedRemoveHeadList [2022-04-07 00:58:39,115 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAllocateMdl [2022-04-07 00:58:39,115 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAttachDeviceToDeviceStack [2022-04-07 00:58:39,115 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildAsynchronousFsdRequest [2022-04-07 00:58:39,115 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2022-04-07 00:58:39,115 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateDevice [2022-04-07 00:58:39,115 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateSymbolicLink [2022-04-07 00:58:39,115 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteDevice [2022-04-07 00:58:39,115 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2022-04-07 00:58:39,115 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDetachDevice [2022-04-07 00:58:39,115 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeIrp [2022-04-07 00:58:39,115 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeMdl [2022-04-07 00:58:39,116 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2022-04-07 00:58:39,116 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2022-04-07 00:58:39,116 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2022-04-07 00:58:39,116 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReleaseCancelSpinLock [2022-04-07 00:58:39,116 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-04-07 00:58:39,116 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetHardErrorOrVerifyDevice [2022-04-07 00:58:39,116 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-04-07 00:58:39,116 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-04-07 00:58:39,116 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-04-07 00:58:39,117 INFO L138 BoogieDeclarations]: Found implementation of procedure KeAcquireSpinLockRaiseToDpc [2022-04-07 00:58:39,117 INFO L138 BoogieDeclarations]: Found implementation of procedure KeDelayExecutionThread [2022-04-07 00:58:39,117 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeEvent [2022-04-07 00:58:39,117 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSemaphore [2022-04-07 00:58:39,117 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSpinLock [2022-04-07 00:58:39,117 INFO L138 BoogieDeclarations]: Found implementation of procedure KeReleaseSemaphore [2022-04-07 00:58:39,117 INFO L138 BoogieDeclarations]: Found implementation of procedure KfReleaseSpinLock [2022-04-07 00:58:39,117 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-04-07 00:58:39,118 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-04-07 00:58:39,118 INFO L138 BoogieDeclarations]: Found implementation of procedure MmAllocateContiguousMemory [2022-04-07 00:58:39,118 INFO L138 BoogieDeclarations]: Found implementation of procedure MmFreeContiguousMemory [2022-04-07 00:58:39,118 INFO L138 BoogieDeclarations]: Found implementation of procedure MmMapLockedPagesSpecifyCache [2022-04-07 00:58:39,118 INFO L138 BoogieDeclarations]: Found implementation of procedure MmPageEntireDriver [2022-04-07 00:58:39,118 INFO L138 BoogieDeclarations]: Found implementation of procedure MmResetDriverPaging [2022-04-07 00:58:39,118 INFO L138 BoogieDeclarations]: Found implementation of procedure MmUnlockPages [2022-04-07 00:58:39,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2022-04-07 00:58:39,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ObfDereferenceObject [2022-04-07 00:58:39,119 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-04-07 00:58:39,119 INFO L138 BoogieDeclarations]: Found implementation of procedure PoStartNextPowerIrp [2022-04-07 00:58:39,119 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2022-04-07 00:58:39,119 INFO L138 BoogieDeclarations]: Found implementation of procedure PsTerminateSystemThread [2022-04-07 00:58:39,119 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlAnsiStringToUnicodeString [2022-04-07 00:58:39,120 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCompareMemory [2022-04-07 00:58:39,120 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCopyUnicodeString [2022-04-07 00:58:39,120 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlDeleteRegistryValue [2022-04-07 00:58:39,120 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlFreeUnicodeString [2022-04-07 00:58:39,120 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitString [2022-04-07 00:58:39,120 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitUnicodeString [2022-04-07 00:58:39,120 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlQueryRegistryValues [2022-04-07 00:58:39,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-04-07 00:58:39,120 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-04-07 00:58:39,121 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-04-07 00:58:39,121 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-07 00:58:39,121 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-07 00:58:39,121 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-07 00:58:39,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-07 00:58:39,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-04-07 00:58:39,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-07 00:58:39,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-04-07 00:58:39,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2022-04-07 00:58:39,121 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-07 00:58:39,122 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2022-04-07 00:58:39,122 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2022-04-07 00:58:39,122 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2022-04-07 00:58:39,122 INFO L130 BoogieDeclarations]: Found specification of procedure RtlQueryRegistryValues [2022-04-07 00:58:39,122 INFO L130 BoogieDeclarations]: Found specification of procedure RtlDeleteRegistryValue [2022-04-07 00:58:39,122 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitString [2022-04-07 00:58:39,122 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitUnicodeString [2022-04-07 00:58:39,122 INFO L130 BoogieDeclarations]: Found specification of procedure RtlAnsiStringToUnicodeString [2022-04-07 00:58:39,122 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCopyUnicodeString [2022-04-07 00:58:39,122 INFO L130 BoogieDeclarations]: Found specification of procedure RtlFreeUnicodeString [2022-04-07 00:58:39,122 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCompareMemory [2022-04-07 00:58:39,122 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedIncrement [2022-04-07 00:58:39,123 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-07 00:58:39,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-07 00:58:39,123 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedDecrement [2022-04-07 00:58:39,123 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeEvent [2022-04-07 00:58:39,123 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-04-07 00:58:39,123 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSemaphore [2022-04-07 00:58:39,123 INFO L130 BoogieDeclarations]: Found specification of procedure KeReleaseSemaphore [2022-04-07 00:58:39,123 INFO L130 BoogieDeclarations]: Found specification of procedure KeDelayExecutionThread [2022-04-07 00:58:39,123 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-04-07 00:58:39,123 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSpinLock [2022-04-07 00:58:39,124 INFO L130 BoogieDeclarations]: Found specification of procedure KfReleaseSpinLock [2022-04-07 00:58:39,124 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2022-04-07 00:58:39,124 INFO L130 BoogieDeclarations]: Found specification of procedure ExFreePool [2022-04-07 00:58:39,124 INFO L130 BoogieDeclarations]: Found specification of procedure ExAcquireFastMutex [2022-04-07 00:58:39,124 INFO L130 BoogieDeclarations]: Found specification of procedure ExReleaseFastMutex [2022-04-07 00:58:39,124 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertHeadList [2022-04-07 00:58:39,124 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertTailList [2022-04-07 00:58:39,124 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedRemoveHeadList [2022-04-07 00:58:39,124 INFO L130 BoogieDeclarations]: Found specification of procedure MmUnlockPages [2022-04-07 00:58:39,124 INFO L130 BoogieDeclarations]: Found specification of procedure MmMapLockedPagesSpecifyCache [2022-04-07 00:58:39,124 INFO L130 BoogieDeclarations]: Found specification of procedure MmAllocateContiguousMemory [2022-04-07 00:58:39,124 INFO L130 BoogieDeclarations]: Found specification of procedure MmFreeContiguousMemory [2022-04-07 00:58:39,125 INFO L130 BoogieDeclarations]: Found specification of procedure MmResetDriverPaging [2022-04-07 00:58:39,125 INFO L130 BoogieDeclarations]: Found specification of procedure MmPageEntireDriver [2022-04-07 00:58:39,125 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2022-04-07 00:58:39,125 INFO L130 BoogieDeclarations]: Found specification of procedure PsTerminateSystemThread [2022-04-07 00:58:39,125 INFO L130 BoogieDeclarations]: Found specification of procedure IoAllocateMdl [2022-04-07 00:58:39,125 INFO L130 BoogieDeclarations]: Found specification of procedure IoAttachDeviceToDeviceStack [2022-04-07 00:58:39,125 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildAsynchronousFsdRequest [2022-04-07 00:58:39,125 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2022-04-07 00:58:39,125 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-04-07 00:58:39,125 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-04-07 00:58:39,126 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateDevice [2022-04-07 00:58:39,126 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateSymbolicLink [2022-04-07 00:58:39,126 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteDevice [2022-04-07 00:58:39,126 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2022-04-07 00:58:39,126 INFO L130 BoogieDeclarations]: Found specification of procedure IoDetachDevice [2022-04-07 00:58:39,126 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeIrp [2022-04-07 00:58:39,126 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeMdl [2022-04-07 00:58:39,126 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2022-04-07 00:58:39,126 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2022-04-07 00:58:39,126 INFO L130 BoogieDeclarations]: Found specification of procedure IoReleaseCancelSpinLock [2022-04-07 00:58:39,126 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetHardErrorOrVerifyDevice [2022-04-07 00:58:39,127 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2022-04-07 00:58:39,127 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-04-07 00:58:39,127 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-04-07 00:58:39,127 INFO L130 BoogieDeclarations]: Found specification of procedure PoStartNextPowerIrp [2022-04-07 00:58:39,127 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2022-04-07 00:58:39,127 INFO L130 BoogieDeclarations]: Found specification of procedure ObfDereferenceObject [2022-04-07 00:58:39,127 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-04-07 00:58:39,127 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_AddDevice [2022-04-07 00:58:39,127 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_CreateClose [2022-04-07 00:58:39,127 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_DispatchPassThrough [2022-04-07 00:58:39,127 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_InternIoCtl [2022-04-07 00:58:39,128 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_IoCtl [2022-04-07 00:58:39,128 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_PnP [2022-04-07 00:58:39,128 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Power [2022-04-07 00:58:39,128 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_InitializationRoutine [2022-04-07 00:58:39,128 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_IsrHook [2022-04-07 00:58:39,128 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_ServiceCallback [2022-04-07 00:58:39,128 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Unload [2022-04-07 00:58:39,128 INFO L130 BoogieDeclarations]: Found specification of procedure DriverEntry [2022-04-07 00:58:39,128 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-04-07 00:58:39,128 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-04-07 00:58:39,128 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-04-07 00:58:39,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-04-07 00:58:39,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-04-07 00:58:39,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-07 00:58:39,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-07 00:58:39,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-04-07 00:58:39,129 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2022-04-07 00:58:39,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-04-07 00:58:39,129 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~PVOID~0~X~~PVOID~0~X~$Pointer$~X~$Pointer$~X~~PBOOLEAN~0~TO~~NTSTATUS~0 [2022-04-07 00:58:39,129 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~PVOID~0~X~~PKEYBOARD_INPUT_DATA~0~X~~POUTPUT_PACKET~0~X~~UCHAR~0~X~~PUCHAR~0~X~~PBOOLEAN~0~X~~PKEYBOARD_SCAN_STATE~0~TO~~BOOLEAN~0 [2022-04-07 00:58:39,129 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~PVOID~0~X~~PVOID~0~X~~PVOID~0~X~~PVOID~0~TO~VOID [2022-04-07 00:58:39,129 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-04-07 00:58:39,129 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2022-04-07 00:58:39,129 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-07 00:58:39,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-04-07 00:58:39,130 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-04-07 00:58:39,130 INFO L130 BoogieDeclarations]: Found specification of procedure KeAcquireSpinLockRaiseToDpc [2022-04-07 00:58:39,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-07 00:58:39,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-07 00:58:39,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-07 00:58:39,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-04-07 00:58:39,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-04-07 00:58:39,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-04-07 00:58:39,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-04-07 00:58:39,594 INFO L234 CfgBuilder]: Building ICFG [2022-04-07 00:58:39,597 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-07 00:58:39,628 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:58:39,662 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 00:58:39,662 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 00:58:39,662 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:58:39,679 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 00:58:39,679 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 00:58:39,695 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:58:39,701 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 00:58:39,702 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 00:58:39,702 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:58:39,720 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 00:58:39,720 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 00:58:39,724 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:58:39,731 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 00:58:39,731 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 00:58:39,984 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:58:39,990 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 00:58:39,990 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 00:58:39,991 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:58:40,000 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 00:58:40,000 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 00:58:40,001 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:58:40,017 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 00:58:40,017 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 00:58:40,032 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:58:40,036 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 00:58:40,036 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 00:58:40,037 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:58:40,040 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 00:58:40,041 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 00:58:40,041 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:58:40,047 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 00:58:40,048 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 00:58:40,074 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:58:40,079 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 00:58:40,079 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 00:58:40,080 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:58:40,084 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 00:58:40,084 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 00:58:40,093 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:58:40,244 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2022-04-07 00:58:40,244 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2022-04-07 00:58:40,261 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:58:40,284 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-04-07 00:58:40,284 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-04-07 00:58:40,308 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:58:40,313 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 00:58:40,313 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 00:58:40,317 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:58:41,044 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-04-07 00:58:41,045 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-04-07 00:58:41,179 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:58:41,183 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 00:58:41,183 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 00:58:41,311 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:58:41,314 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 00:58:41,314 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 00:58:41,326 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:58:41,342 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-04-07 00:58:41,342 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-04-07 00:58:41,348 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:58:41,357 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-04-07 00:58:41,357 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-04-07 00:58:41,376 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:58:41,381 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 00:58:41,381 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 00:58:41,383 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:58:41,405 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2022-04-07 00:58:41,405 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2022-04-07 00:58:41,408 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:58:41,412 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 00:58:41,412 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 00:58:41,432 INFO L275 CfgBuilder]: Performing block encoding [2022-04-07 00:58:41,441 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-07 00:58:41,441 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-04-07 00:58:41,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.04 12:58:41 BoogieIcfgContainer [2022-04-07 00:58:41,444 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-07 00:58:41,445 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-07 00:58:41,445 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-07 00:58:41,448 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-07 00:58:41,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.04 12:58:38" (1/3) ... [2022-04-07 00:58:41,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d423574 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.04 12:58:41, skipping insertion in model container [2022-04-07 00:58:41,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:58:38" (2/3) ... [2022-04-07 00:58:41,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d423574 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.04 12:58:41, skipping insertion in model container [2022-04-07 00:58:41,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.04 12:58:41" (3/3) ... [2022-04-07 00:58:41,451 INFO L111 eAbstractionObserver]: Analyzing ICFG kbfiltr.i.cil-2.c [2022-04-07 00:58:41,455 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-07 00:58:41,455 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-07 00:58:41,497 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-07 00:58:41,503 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-07 00:58:41,503 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-07 00:58:41,527 INFO L276 IsEmpty]: Start isEmpty. Operand has 308 states, 230 states have (on average 1.5) internal successors, (345), 248 states have internal predecessors, (345), 49 states have call successors, (49), 27 states have call predecessors, (49), 27 states have return successors, (49), 47 states have call predecessors, (49), 49 states have call successors, (49) [2022-04-07 00:58:41,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-04-07 00:58:41,543 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:58:41,544 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:58:41,544 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:58:41,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:58:41,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1774662017, now seen corresponding path program 1 times [2022-04-07 00:58:41,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:58:41,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1578346032] [2022-04-07 00:58:41,564 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:58:41,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1774662017, now seen corresponding path program 2 times [2022-04-07 00:58:41,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:58:41,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094669978] [2022-04-07 00:58:41,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:58:41,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:58:41,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:58:42,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:58:42,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:58:42,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:58:42,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:58:42,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 00:58:42,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:58:42,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:58:42,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:58:42,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:58:42,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:58:42,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094669978] [2022-04-07 00:58:42,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094669978] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:58:42,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:58:42,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-07 00:58:42,193 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:58:42,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1578346032] [2022-04-07 00:58:42,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1578346032] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:58:42,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:58:42,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-07 00:58:42,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831703253] [2022-04-07 00:58:42,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:58:42,198 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-07 00:58:42,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:58:42,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-07 00:58:42,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-04-07 00:58:42,220 INFO L87 Difference]: Start difference. First operand has 308 states, 230 states have (on average 1.5) internal successors, (345), 248 states have internal predecessors, (345), 49 states have call successors, (49), 27 states have call predecessors, (49), 27 states have return successors, (49), 47 states have call predecessors, (49), 49 states have call successors, (49) Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-07 00:58:44,314 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:58:46,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:58:46,631 INFO L93 Difference]: Finished difference Result 643 states and 953 transitions. [2022-04-07 00:58:46,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-07 00:58:46,635 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 31 [2022-04-07 00:58:46,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:58:46,646 INFO L225 Difference]: With dead ends: 643 [2022-04-07 00:58:46,646 INFO L226 Difference]: Without dead ends: 343 [2022-04-07 00:58:46,656 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-04-07 00:58:46,660 INFO L913 BasicCegarLoop]: 335 mSDtfsCounter, 597 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 220 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-04-07 00:58:46,661 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [602 Valid, 463 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 379 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2022-04-07 00:58:46,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-04-07 00:58:46,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 299. [2022-04-07 00:58:46,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 224 states have (on average 1.4464285714285714) internal successors, (324), 240 states have internal predecessors, (324), 49 states have call successors, (49), 27 states have call predecessors, (49), 25 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-04-07 00:58:46,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 407 transitions. [2022-04-07 00:58:46,759 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 407 transitions. Word has length 31 [2022-04-07 00:58:46,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:58:46,759 INFO L478 AbstractCegarLoop]: Abstraction has 299 states and 407 transitions. [2022-04-07 00:58:46,760 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-07 00:58:46,760 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 407 transitions. [2022-04-07 00:58:46,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-04-07 00:58:46,761 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:58:46,761 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:58:46,761 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-07 00:58:46,761 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:58:46,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:58:46,764 INFO L85 PathProgramCache]: Analyzing trace with hash 186314115, now seen corresponding path program 1 times [2022-04-07 00:58:46,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:58:46,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1521336927] [2022-04-07 00:58:46,766 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:58:46,766 INFO L85 PathProgramCache]: Analyzing trace with hash 186314115, now seen corresponding path program 2 times [2022-04-07 00:58:46,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:58:46,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905918265] [2022-04-07 00:58:46,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:58:46,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:58:46,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:58:46,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:58:47,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:58:47,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:58:47,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:58:47,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 00:58:47,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:58:47,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:58:47,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:58:47,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:58:47,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:58:47,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905918265] [2022-04-07 00:58:47,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905918265] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:58:47,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:58:47,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-07 00:58:47,129 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:58:47,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1521336927] [2022-04-07 00:58:47,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1521336927] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:58:47,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:58:47,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-07 00:58:47,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620083004] [2022-04-07 00:58:47,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:58:47,130 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-07 00:58:47,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:58:47,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-07 00:58:47,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-04-07 00:58:47,131 INFO L87 Difference]: Start difference. First operand 299 states and 407 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-07 00:58:49,226 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:58:51,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:58:51,899 INFO L93 Difference]: Finished difference Result 360 states and 492 transitions. [2022-04-07 00:58:51,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-07 00:58:51,899 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 31 [2022-04-07 00:58:51,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:58:51,907 INFO L225 Difference]: With dead ends: 360 [2022-04-07 00:58:51,907 INFO L226 Difference]: Without dead ends: 343 [2022-04-07 00:58:51,908 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-04-07 00:58:51,909 INFO L913 BasicCegarLoop]: 314 mSDtfsCounter, 395 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 1531 mSolverCounterSat, 148 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 1680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 1531 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-04-07 00:58:51,909 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [401 Valid, 683 Invalid, 1680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 1531 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2022-04-07 00:58:51,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-04-07 00:58:51,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 299. [2022-04-07 00:58:51,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 224 states have (on average 1.4419642857142858) internal successors, (323), 240 states have internal predecessors, (323), 49 states have call successors, (49), 27 states have call predecessors, (49), 25 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-04-07 00:58:51,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 406 transitions. [2022-04-07 00:58:51,955 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 406 transitions. Word has length 31 [2022-04-07 00:58:51,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:58:51,955 INFO L478 AbstractCegarLoop]: Abstraction has 299 states and 406 transitions. [2022-04-07 00:58:51,955 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-07 00:58:51,955 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 406 transitions. [2022-04-07 00:58:51,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-04-07 00:58:51,958 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:58:51,958 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:58:51,958 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-07 00:58:51,958 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:58:51,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:58:51,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1201516382, now seen corresponding path program 1 times [2022-04-07 00:58:51,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:58:51,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [851189605] [2022-04-07 00:58:51,959 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:58:51,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1201516382, now seen corresponding path program 2 times [2022-04-07 00:58:51,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:58:51,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148181234] [2022-04-07 00:58:51,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:58:51,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:58:52,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:58:52,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:58:52,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:58:52,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:58:52,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:58:52,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 00:58:52,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:58:52,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:58:52,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:58:52,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-04-07 00:58:52,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:58:52,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:58:52,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:58:52,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-07 00:58:52,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:58:52,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:58:52,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:58:52,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148181234] [2022-04-07 00:58:52,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148181234] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:58:52,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:58:52,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-07 00:58:52,349 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:58:52,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [851189605] [2022-04-07 00:58:52,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [851189605] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:58:52,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:58:52,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-07 00:58:52,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914839540] [2022-04-07 00:58:52,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:58:52,350 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-07 00:58:52,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:58:52,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-07 00:58:52,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-04-07 00:58:52,351 INFO L87 Difference]: Start difference. First operand 299 states and 406 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (11), 7 states have call predecessors, (11), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-07 00:58:53,757 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:58:55,776 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:58:57,802 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:58:59,822 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:59:01,841 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:59:03,874 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:59:05,907 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:59:09,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:59:09,498 INFO L93 Difference]: Finished difference Result 599 states and 829 transitions. [2022-04-07 00:59:09,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-07 00:59:09,499 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (11), 7 states have call predecessors, (11), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 53 [2022-04-07 00:59:09,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:59:09,501 INFO L225 Difference]: With dead ends: 599 [2022-04-07 00:59:09,501 INFO L226 Difference]: Without dead ends: 348 [2022-04-07 00:59:09,502 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2022-04-07 00:59:09,503 INFO L913 BasicCegarLoop]: 312 mSDtfsCounter, 609 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 1672 mSolverCounterSat, 253 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 1931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 1672 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.8s IncrementalHoareTripleChecker+Time [2022-04-07 00:59:09,504 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [612 Valid, 792 Invalid, 1931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 1672 Invalid, 6 Unknown, 0 Unchecked, 16.8s Time] [2022-04-07 00:59:09,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2022-04-07 00:59:09,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 303. [2022-04-07 00:59:09,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 227 states have (on average 1.4361233480176212) internal successors, (326), 243 states have internal predecessors, (326), 49 states have call successors, (49), 27 states have call predecessors, (49), 26 states have return successors, (35), 35 states have call predecessors, (35), 34 states have call successors, (35) [2022-04-07 00:59:09,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 410 transitions. [2022-04-07 00:59:09,545 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 410 transitions. Word has length 53 [2022-04-07 00:59:09,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:59:09,546 INFO L478 AbstractCegarLoop]: Abstraction has 303 states and 410 transitions. [2022-04-07 00:59:09,546 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (11), 7 states have call predecessors, (11), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-07 00:59:09,546 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 410 transitions. [2022-04-07 00:59:09,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-04-07 00:59:09,547 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:59:09,548 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:59:09,548 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-07 00:59:09,548 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:59:09,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:59:09,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1078281185, now seen corresponding path program 1 times [2022-04-07 00:59:09,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:59:09,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [258663892] [2022-04-07 00:59:09,549 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:59:09,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1078281185, now seen corresponding path program 2 times [2022-04-07 00:59:09,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:59:09,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668776992] [2022-04-07 00:59:09,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:59:09,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:59:09,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:09,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:59:09,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:09,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:59:09,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:09,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 00:59:09,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:09,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:59:09,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:09,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-04-07 00:59:09,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:09,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:59:09,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:09,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-07 00:59:09,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:09,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:59:09,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:59:09,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668776992] [2022-04-07 00:59:09,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668776992] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:59:09,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:59:09,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-07 00:59:09,970 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:59:09,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [258663892] [2022-04-07 00:59:09,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [258663892] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:59:09,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:59:09,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-07 00:59:09,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767921860] [2022-04-07 00:59:09,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:59:09,974 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-07 00:59:09,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:59:09,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-07 00:59:09,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-04-07 00:59:09,975 INFO L87 Difference]: Start difference. First operand 303 states and 410 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-07 00:59:12,097 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:59:14,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:59:14,793 INFO L93 Difference]: Finished difference Result 492 states and 667 transitions. [2022-04-07 00:59:14,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-07 00:59:14,794 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 53 [2022-04-07 00:59:14,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:59:14,796 INFO L225 Difference]: With dead ends: 492 [2022-04-07 00:59:14,797 INFO L226 Difference]: Without dead ends: 431 [2022-04-07 00:59:14,797 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-04-07 00:59:14,798 INFO L913 BasicCegarLoop]: 362 mSDtfsCounter, 864 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 299 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 1103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-04-07 00:59:14,798 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [869 Valid, 612 Invalid, 1103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 803 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2022-04-07 00:59:14,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2022-04-07 00:59:14,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 374. [2022-04-07 00:59:14,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 288 states have (on average 1.3715277777777777) internal successors, (395), 292 states have internal predecessors, (395), 48 states have call successors, (48), 33 states have call predecessors, (48), 37 states have return successors, (55), 51 states have call predecessors, (55), 39 states have call successors, (55) [2022-04-07 00:59:14,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 498 transitions. [2022-04-07 00:59:14,854 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 498 transitions. Word has length 53 [2022-04-07 00:59:14,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:59:14,856 INFO L478 AbstractCegarLoop]: Abstraction has 374 states and 498 transitions. [2022-04-07 00:59:14,856 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-07 00:59:14,856 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 498 transitions. [2022-04-07 00:59:14,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-04-07 00:59:14,858 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:59:14,858 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:59:14,858 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-07 00:59:14,859 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:59:14,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:59:14,859 INFO L85 PathProgramCache]: Analyzing trace with hash 17478568, now seen corresponding path program 1 times [2022-04-07 00:59:14,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:59:14,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [773651890] [2022-04-07 00:59:14,862 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:59:14,862 INFO L85 PathProgramCache]: Analyzing trace with hash 17478568, now seen corresponding path program 2 times [2022-04-07 00:59:14,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:59:14,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037197751] [2022-04-07 00:59:14,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:59:14,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:59:14,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:15,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:59:15,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:15,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:59:15,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:15,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 00:59:15,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:15,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:59:15,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:15,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-04-07 00:59:15,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:15,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:59:15,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:15,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-07 00:59:15,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:15,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-04-07 00:59:15,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:15,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:59:15,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:59:15,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037197751] [2022-04-07 00:59:15,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037197751] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:59:15,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:59:15,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-07 00:59:15,273 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:59:15,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [773651890] [2022-04-07 00:59:15,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [773651890] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:59:15,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:59:15,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-07 00:59:15,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491804608] [2022-04-07 00:59:15,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:59:15,274 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-07 00:59:15,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:59:15,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-07 00:59:15,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-04-07 00:59:15,275 INFO L87 Difference]: Start difference. First operand 374 states and 498 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-07 00:59:17,412 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:59:18,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:59:18,871 INFO L93 Difference]: Finished difference Result 569 states and 751 transitions. [2022-04-07 00:59:18,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-07 00:59:18,872 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 60 [2022-04-07 00:59:18,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:59:18,874 INFO L225 Difference]: With dead ends: 569 [2022-04-07 00:59:18,874 INFO L226 Difference]: Without dead ends: 450 [2022-04-07 00:59:18,875 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-04-07 00:59:18,876 INFO L913 BasicCegarLoop]: 320 mSDtfsCounter, 974 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 330 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 986 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-04-07 00:59:18,876 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [986 Valid, 489 Invalid, 981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 650 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2022-04-07 00:59:18,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-04-07 00:59:18,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 410. [2022-04-07 00:59:18,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 325 states have (on average 1.3723076923076922) internal successors, (446), 327 states have internal predecessors, (446), 44 states have call successors, (44), 33 states have call predecessors, (44), 40 states have return successors, (55), 50 states have call predecessors, (55), 37 states have call successors, (55) [2022-04-07 00:59:18,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 545 transitions. [2022-04-07 00:59:18,958 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 545 transitions. Word has length 60 [2022-04-07 00:59:18,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:59:18,958 INFO L478 AbstractCegarLoop]: Abstraction has 410 states and 545 transitions. [2022-04-07 00:59:18,959 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-07 00:59:18,959 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 545 transitions. [2022-04-07 00:59:18,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-04-07 00:59:18,960 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:59:18,960 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:59:18,960 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-07 00:59:18,960 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:59:18,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:59:18,961 INFO L85 PathProgramCache]: Analyzing trace with hash -110356200, now seen corresponding path program 1 times [2022-04-07 00:59:18,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:59:18,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1520856239] [2022-04-07 00:59:18,961 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:59:18,961 INFO L85 PathProgramCache]: Analyzing trace with hash -110356200, now seen corresponding path program 2 times [2022-04-07 00:59:18,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:59:18,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160063402] [2022-04-07 00:59:18,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:59:18,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:59:19,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:19,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:59:19,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:19,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:59:19,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:19,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 00:59:19,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:19,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:59:19,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:19,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-04-07 00:59:19,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:19,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:59:19,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:19,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-07 00:59:19,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:19,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-04-07 00:59:19,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:19,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:59:19,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:59:19,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160063402] [2022-04-07 00:59:19,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160063402] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:59:19,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:59:19,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-07 00:59:19,382 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:59:19,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1520856239] [2022-04-07 00:59:19,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1520856239] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:59:19,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:59:19,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-07 00:59:19,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946019221] [2022-04-07 00:59:19,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:59:19,383 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-07 00:59:19,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:59:19,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-07 00:59:19,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-04-07 00:59:19,384 INFO L87 Difference]: Start difference. First operand 410 states and 545 transitions. Second operand has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 6 states have internal predecessors, (42), 4 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-04-07 00:59:21,559 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:59:24,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:59:24,490 INFO L93 Difference]: Finished difference Result 450 states and 594 transitions. [2022-04-07 00:59:24,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-04-07 00:59:24,491 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 6 states have internal predecessors, (42), 4 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 60 [2022-04-07 00:59:24,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:59:24,493 INFO L225 Difference]: With dead ends: 450 [2022-04-07 00:59:24,494 INFO L226 Difference]: Without dead ends: 442 [2022-04-07 00:59:24,494 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2022-04-07 00:59:24,495 INFO L913 BasicCegarLoop]: 332 mSDtfsCounter, 1505 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 517 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 1262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 517 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-04-07 00:59:24,495 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1514 Valid, 539 Invalid, 1262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [517 Valid, 744 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2022-04-07 00:59:24,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2022-04-07 00:59:24,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 415. [2022-04-07 00:59:24,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 330 states have (on average 1.3696969696969696) internal successors, (452), 332 states have internal predecessors, (452), 44 states have call successors, (44), 33 states have call predecessors, (44), 40 states have return successors, (55), 50 states have call predecessors, (55), 37 states have call successors, (55) [2022-04-07 00:59:24,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 551 transitions. [2022-04-07 00:59:24,582 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 551 transitions. Word has length 60 [2022-04-07 00:59:24,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:59:24,582 INFO L478 AbstractCegarLoop]: Abstraction has 415 states and 551 transitions. [2022-04-07 00:59:24,582 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 6 states have internal predecessors, (42), 4 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-04-07 00:59:24,582 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 551 transitions. [2022-04-07 00:59:24,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-04-07 00:59:24,583 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:59:24,583 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:59:24,584 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-07 00:59:24,584 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:59:24,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:59:24,584 INFO L85 PathProgramCache]: Analyzing trace with hash 400358010, now seen corresponding path program 1 times [2022-04-07 00:59:24,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:59:24,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [435707784] [2022-04-07 00:59:24,587 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:59:24,587 INFO L85 PathProgramCache]: Analyzing trace with hash 400358010, now seen corresponding path program 2 times [2022-04-07 00:59:24,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:59:24,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400193984] [2022-04-07 00:59:24,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:59:24,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:59:24,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:24,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:59:24,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:24,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:59:24,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:24,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 00:59:24,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:24,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:59:24,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:24,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-04-07 00:59:24,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:24,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:59:24,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:24,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-07 00:59:24,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:24,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:59:24,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:59:24,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400193984] [2022-04-07 00:59:24,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400193984] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:59:24,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:59:24,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-07 00:59:24,919 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:59:24,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [435707784] [2022-04-07 00:59:24,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [435707784] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:59:24,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:59:24,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-07 00:59:24,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935821690] [2022-04-07 00:59:24,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:59:24,919 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-07 00:59:24,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:59:24,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-07 00:59:24,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-04-07 00:59:24,921 INFO L87 Difference]: Start difference. First operand 415 states and 551 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (12), 8 states have call predecessors, (12), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-07 00:59:27,063 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:59:28,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:59:28,998 INFO L93 Difference]: Finished difference Result 433 states and 574 transitions. [2022-04-07 00:59:28,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-07 00:59:28,998 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (12), 8 states have call predecessors, (12), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 62 [2022-04-07 00:59:28,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:59:29,000 INFO L225 Difference]: With dead ends: 433 [2022-04-07 00:59:29,001 INFO L226 Difference]: Without dead ends: 429 [2022-04-07 00:59:29,001 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-04-07 00:59:29,002 INFO L913 BasicCegarLoop]: 298 mSDtfsCounter, 725 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 257 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-04-07 00:59:29,002 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [729 Valid, 475 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 675 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2022-04-07 00:59:29,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2022-04-07 00:59:29,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 414. [2022-04-07 00:59:29,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 330 states have (on average 1.3636363636363635) internal successors, (450), 331 states have internal predecessors, (450), 43 states have call successors, (43), 33 states have call predecessors, (43), 40 states have return successors, (55), 50 states have call predecessors, (55), 37 states have call successors, (55) [2022-04-07 00:59:29,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 548 transitions. [2022-04-07 00:59:29,072 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 548 transitions. Word has length 62 [2022-04-07 00:59:29,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:59:29,072 INFO L478 AbstractCegarLoop]: Abstraction has 414 states and 548 transitions. [2022-04-07 00:59:29,073 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (12), 8 states have call predecessors, (12), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-07 00:59:29,073 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 548 transitions. [2022-04-07 00:59:29,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-04-07 00:59:29,074 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:59:29,074 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:59:29,074 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-07 00:59:29,074 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:59:29,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:59:29,074 INFO L85 PathProgramCache]: Analyzing trace with hash 466089939, now seen corresponding path program 1 times [2022-04-07 00:59:29,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:59:29,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2048327075] [2022-04-07 00:59:29,075 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:59:29,075 INFO L85 PathProgramCache]: Analyzing trace with hash 466089939, now seen corresponding path program 2 times [2022-04-07 00:59:29,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:59:29,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663584329] [2022-04-07 00:59:29,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:59:29,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:59:29,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:29,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:59:29,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:29,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:59:29,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:29,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 00:59:29,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:29,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:59:29,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:29,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-04-07 00:59:29,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:29,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:59:29,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:29,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-07 00:59:29,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:29,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-04-07 00:59:29,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:29,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:59:29,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:59:29,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663584329] [2022-04-07 00:59:29,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663584329] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:59:29,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:59:29,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-07 00:59:29,509 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:59:29,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2048327075] [2022-04-07 00:59:29,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2048327075] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:59:29,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:59:29,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-07 00:59:29,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997809040] [2022-04-07 00:59:29,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:59:29,510 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-07 00:59:29,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:59:29,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-07 00:59:29,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-04-07 00:59:29,511 INFO L87 Difference]: Start difference. First operand 414 states and 548 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-04-07 00:59:31,678 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:59:34,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:59:34,719 INFO L93 Difference]: Finished difference Result 448 states and 589 transitions. [2022-04-07 00:59:34,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-04-07 00:59:34,720 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 61 [2022-04-07 00:59:34,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:59:34,722 INFO L225 Difference]: With dead ends: 448 [2022-04-07 00:59:34,722 INFO L226 Difference]: Without dead ends: 440 [2022-04-07 00:59:34,723 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2022-04-07 00:59:34,723 INFO L913 BasicCegarLoop]: 334 mSDtfsCounter, 1683 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 887 mSolverCounterSat, 559 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1692 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 1447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 559 IncrementalHoareTripleChecker+Valid, 887 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-04-07 00:59:34,724 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1692 Valid, 606 Invalid, 1447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [559 Valid, 887 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2022-04-07 00:59:34,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2022-04-07 00:59:34,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 415. [2022-04-07 00:59:34,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 331 states have (on average 1.3625377643504533) internal successors, (451), 332 states have internal predecessors, (451), 43 states have call successors, (43), 33 states have call predecessors, (43), 40 states have return successors, (55), 50 states have call predecessors, (55), 37 states have call successors, (55) [2022-04-07 00:59:34,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 549 transitions. [2022-04-07 00:59:34,785 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 549 transitions. Word has length 61 [2022-04-07 00:59:34,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:59:34,785 INFO L478 AbstractCegarLoop]: Abstraction has 415 states and 549 transitions. [2022-04-07 00:59:34,785 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-04-07 00:59:34,785 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 549 transitions. [2022-04-07 00:59:34,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-04-07 00:59:34,786 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:59:34,786 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:59:34,787 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-04-07 00:59:34,787 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:59:34,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:59:34,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1325055407, now seen corresponding path program 1 times [2022-04-07 00:59:34,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:59:34,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1201983493] [2022-04-07 00:59:34,788 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:59:34,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1325055407, now seen corresponding path program 2 times [2022-04-07 00:59:34,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:59:34,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976844] [2022-04-07 00:59:34,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:59:34,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:59:34,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:34,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:59:34,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:34,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:59:34,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:34,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 00:59:35,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:35,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:59:35,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:35,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-04-07 00:59:35,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:35,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:59:35,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:35,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-07 00:59:35,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:35,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-04-07 00:59:35,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:35,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:59:35,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:59:35,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976844] [2022-04-07 00:59:35,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976844] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:59:35,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:59:35,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-07 00:59:35,098 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:59:35,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1201983493] [2022-04-07 00:59:35,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1201983493] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:59:35,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:59:35,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-07 00:59:35,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283672795] [2022-04-07 00:59:35,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:59:35,100 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-07 00:59:35,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:59:35,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-07 00:59:35,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-04-07 00:59:35,100 INFO L87 Difference]: Start difference. First operand 415 states and 549 transitions. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 5 states have internal predecessors, (44), 4 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-04-07 00:59:37,239 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:59:39,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:59:39,762 INFO L93 Difference]: Finished difference Result 442 states and 581 transitions. [2022-04-07 00:59:39,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-04-07 00:59:39,763 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 5 states have internal predecessors, (44), 4 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 62 [2022-04-07 00:59:39,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:59:39,765 INFO L225 Difference]: With dead ends: 442 [2022-04-07 00:59:39,765 INFO L226 Difference]: Without dead ends: 389 [2022-04-07 00:59:39,766 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2022-04-07 00:59:39,766 INFO L913 BasicCegarLoop]: 336 mSDtfsCounter, 1385 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 871 mSolverCounterSat, 451 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1393 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 1323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 451 IncrementalHoareTripleChecker+Valid, 871 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-04-07 00:59:39,766 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1393 Valid, 609 Invalid, 1323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [451 Valid, 871 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2022-04-07 00:59:39,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2022-04-07 00:59:39,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 371. [2022-04-07 00:59:39,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 296 states have (on average 1.3817567567567568) internal successors, (409), 302 states have internal predecessors, (409), 42 states have call successors, (42), 32 states have call predecessors, (42), 32 states have return successors, (42), 37 states have call predecessors, (42), 36 states have call successors, (42) [2022-04-07 00:59:39,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 493 transitions. [2022-04-07 00:59:39,837 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 493 transitions. Word has length 62 [2022-04-07 00:59:39,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:59:39,838 INFO L478 AbstractCegarLoop]: Abstraction has 371 states and 493 transitions. [2022-04-07 00:59:39,838 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 5 states have internal predecessors, (44), 4 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-04-07 00:59:39,838 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 493 transitions. [2022-04-07 00:59:39,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-04-07 00:59:39,839 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:59:39,840 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:59:39,840 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-04-07 00:59:39,840 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:59:39,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:59:39,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1052170321, now seen corresponding path program 1 times [2022-04-07 00:59:39,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:59:39,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1005894723] [2022-04-07 00:59:39,841 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:59:39,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1052170321, now seen corresponding path program 2 times [2022-04-07 00:59:39,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:59:39,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815638792] [2022-04-07 00:59:39,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:59:39,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:59:39,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:40,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:59:40,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:40,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:59:40,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:40,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 00:59:40,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:40,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:59:40,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:40,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-04-07 00:59:40,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:40,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:59:40,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:40,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-07 00:59:40,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:40,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-04-07 00:59:40,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:40,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-07 00:59:40,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:40,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:59:40,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:59:40,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815638792] [2022-04-07 00:59:40,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815638792] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:59:40,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:59:40,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-07 00:59:40,332 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:59:40,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1005894723] [2022-04-07 00:59:40,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1005894723] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:59:40,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:59:40,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-07 00:59:40,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713807104] [2022-04-07 00:59:40,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:59:40,333 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-07 00:59:40,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:59:40,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-07 00:59:40,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-04-07 00:59:40,333 INFO L87 Difference]: Start difference. First operand 371 states and 493 transitions. Second operand has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-04-07 00:59:42,496 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 [] [2022-04-07 00:59:45,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:59:45,983 INFO L93 Difference]: Finished difference Result 417 states and 550 transitions. [2022-04-07 00:59:45,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-04-07 00:59:45,984 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 72 [2022-04-07 00:59:45,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:59:45,986 INFO L225 Difference]: With dead ends: 417 [2022-04-07 00:59:45,986 INFO L226 Difference]: Without dead ends: 409 [2022-04-07 00:59:45,986 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=190, Invalid=566, Unknown=0, NotChecked=0, Total=756 [2022-04-07 00:59:45,987 INFO L913 BasicCegarLoop]: 278 mSDtfsCounter, 884 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 1342 mSolverCounterSat, 274 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 896 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 1617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1342 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-04-07 00:59:45,987 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [896 Valid, 572 Invalid, 1617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1342 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2022-04-07 00:59:45,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2022-04-07 00:59:46,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 386. [2022-04-07 00:59:46,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 309 states have (on average 1.3754045307443366) internal successors, (425), 314 states have internal predecessors, (425), 42 states have call successors, (42), 32 states have call predecessors, (42), 34 states have return successors, (44), 39 states have call predecessors, (44), 36 states have call successors, (44) [2022-04-07 00:59:46,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 511 transitions. [2022-04-07 00:59:46,062 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 511 transitions. Word has length 72 [2022-04-07 00:59:46,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:59:46,062 INFO L478 AbstractCegarLoop]: Abstraction has 386 states and 511 transitions. [2022-04-07 00:59:46,062 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-04-07 00:59:46,063 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 511 transitions. [2022-04-07 00:59:46,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-04-07 00:59:46,064 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:59:46,064 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:59:46,064 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-04-07 00:59:46,064 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:59:46,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:59:46,064 INFO L85 PathProgramCache]: Analyzing trace with hash 2144673722, now seen corresponding path program 1 times [2022-04-07 00:59:46,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:59:46,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [798946641] [2022-04-07 00:59:46,065 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:59:46,065 INFO L85 PathProgramCache]: Analyzing trace with hash 2144673722, now seen corresponding path program 2 times [2022-04-07 00:59:46,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:59:46,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963377931] [2022-04-07 00:59:46,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:59:46,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:59:46,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:46,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:59:46,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:46,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:59:46,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:46,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 00:59:46,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:46,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:59:46,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:46,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-04-07 00:59:46,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:46,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:59:46,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:46,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-07 00:59:46,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:46,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-04-07 00:59:46,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:46,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-07 00:59:46,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:59:46,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:59:46,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:59:46,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963377931] [2022-04-07 00:59:46,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963377931] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:59:46,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:59:46,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-07 00:59:46,481 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:59:46,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [798946641] [2022-04-07 00:59:46,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [798946641] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:59:46,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:59:46,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-07 00:59:46,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931665169] [2022-04-07 00:59:46,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:59:46,481 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-07 00:59:46,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:59:46,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-07 00:59:46,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-04-07 00:59:46,482 INFO L87 Difference]: Start difference. First operand 386 states and 511 transitions. Second operand has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 7 states have internal predecessors, (53), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-04-07 00:59:48,124 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 [] [2022-04-07 00:59:50,156 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:59:52,179 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:59:54,203 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:59:56,241 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 00:59:58,269 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:00:00,291 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:00:05,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:00:05,681 INFO L93 Difference]: Finished difference Result 417 states and 549 transitions. [2022-04-07 01:00:05,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-04-07 01:00:05,682 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 7 states have internal predecessors, (53), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 73 [2022-04-07 01:00:05,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:00:05,684 INFO L225 Difference]: With dead ends: 417 [2022-04-07 01:00:05,684 INFO L226 Difference]: Without dead ends: 409 [2022-04-07 01:00:05,684 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=199, Invalid=613, Unknown=0, NotChecked=0, Total=812 [2022-04-07 01:00:05,685 INFO L913 BasicCegarLoop]: 278 mSDtfsCounter, 1060 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 1624 mSolverCounterSat, 349 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 1979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 1624 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.5s IncrementalHoareTripleChecker+Time [2022-04-07 01:00:05,685 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1072 Valid, 659 Invalid, 1979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 1624 Invalid, 6 Unknown, 0 Unchecked, 18.5s Time] [2022-04-07 01:00:05,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2022-04-07 01:00:05,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 387. [2022-04-07 01:00:05,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 310 states have (on average 1.3741935483870968) internal successors, (426), 315 states have internal predecessors, (426), 42 states have call successors, (42), 32 states have call predecessors, (42), 34 states have return successors, (44), 39 states have call predecessors, (44), 36 states have call successors, (44) [2022-04-07 01:00:05,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 512 transitions. [2022-04-07 01:00:05,757 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 512 transitions. Word has length 73 [2022-04-07 01:00:05,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:00:05,758 INFO L478 AbstractCegarLoop]: Abstraction has 387 states and 512 transitions. [2022-04-07 01:00:05,758 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 7 states have internal predecessors, (53), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-04-07 01:00:05,758 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 512 transitions. [2022-04-07 01:00:05,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-04-07 01:00:05,759 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:00:05,759 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:00:05,759 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-04-07 01:00:05,760 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:00:05,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:00:05,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1821545128, now seen corresponding path program 1 times [2022-04-07 01:00:05,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:00:05,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [46905022] [2022-04-07 01:00:05,760 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 01:00:05,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1821545128, now seen corresponding path program 2 times [2022-04-07 01:00:05,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:00:05,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167358683] [2022-04-07 01:00:05,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:00:05,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:00:05,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:05,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:00:05,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:05,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 01:00:05,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:05,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:00:05,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:05,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:00:05,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:05,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-04-07 01:00:05,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:05,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:00:05,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:06,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-07 01:00:06,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:06,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-04-07 01:00:06,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:06,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-07 01:00:06,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:06,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:00:06,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:00:06,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167358683] [2022-04-07 01:00:06,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167358683] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:00:06,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:00:06,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-07 01:00:06,068 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:00:06,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [46905022] [2022-04-07 01:00:06,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [46905022] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:00:06,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:00:06,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-07 01:00:06,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182170925] [2022-04-07 01:00:06,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:00:06,080 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-07 01:00:06,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:00:06,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-07 01:00:06,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-04-07 01:00:06,081 INFO L87 Difference]: Start difference. First operand 387 states and 512 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, (11), 9 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-04-07 01:00:08,267 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:00:11,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:00:11,336 INFO L93 Difference]: Finished difference Result 419 states and 554 transitions. [2022-04-07 01:00:11,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-07 01:00:11,337 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, (11), 9 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 74 [2022-04-07 01:00:11,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:00:11,339 INFO L225 Difference]: With dead ends: 419 [2022-04-07 01:00:11,339 INFO L226 Difference]: Without dead ends: 396 [2022-04-07 01:00:11,339 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2022-04-07 01:00:11,340 INFO L913 BasicCegarLoop]: 271 mSDtfsCounter, 744 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 863 mSolverCounterSat, 244 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 863 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-04-07 01:00:11,340 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [754 Valid, 455 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 863 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2022-04-07 01:00:11,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2022-04-07 01:00:11,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 381. [2022-04-07 01:00:11,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 305 states have (on average 1.3639344262295081) internal successors, (416), 309 states have internal predecessors, (416), 41 states have call successors, (41), 32 states have call predecessors, (41), 34 states have return successors, (44), 39 states have call predecessors, (44), 36 states have call successors, (44) [2022-04-07 01:00:11,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 501 transitions. [2022-04-07 01:00:11,422 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 501 transitions. Word has length 74 [2022-04-07 01:00:11,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:00:11,422 INFO L478 AbstractCegarLoop]: Abstraction has 381 states and 501 transitions. [2022-04-07 01:00:11,422 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, (11), 9 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-04-07 01:00:11,422 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 501 transitions. [2022-04-07 01:00:11,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-04-07 01:00:11,423 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:00:11,424 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:00:11,424 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-04-07 01:00:11,424 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:00:11,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:00:11,424 INFO L85 PathProgramCache]: Analyzing trace with hash 937494245, now seen corresponding path program 1 times [2022-04-07 01:00:11,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:00:11,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [601111531] [2022-04-07 01:00:11,426 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 01:00:11,426 INFO L85 PathProgramCache]: Analyzing trace with hash 937494245, now seen corresponding path program 2 times [2022-04-07 01:00:11,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:00:11,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734590543] [2022-04-07 01:00:11,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:00:11,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:00:11,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:11,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:00:11,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:11,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 01:00:11,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:11,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:00:11,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:11,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:00:11,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:11,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-04-07 01:00:11,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:11,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:00:11,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:11,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-07 01:00:11,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:11,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-04-07 01:00:11,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:11,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-04-07 01:00:11,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:11,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:00:11,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:00:11,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734590543] [2022-04-07 01:00:11,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734590543] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:00:11,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:00:11,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-07 01:00:11,755 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:00:11,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [601111531] [2022-04-07 01:00:11,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [601111531] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:00:11,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:00:11,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-07 01:00:11,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190772924] [2022-04-07 01:00:11,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:00:11,756 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-07 01:00:11,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:00:11,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-07 01:00:11,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-04-07 01:00:11,757 INFO L87 Difference]: Start difference. First operand 381 states and 501 transitions. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (13), 8 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-04-07 01:00:13,906 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:00:16,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:00:16,750 INFO L93 Difference]: Finished difference Result 437 states and 561 transitions. [2022-04-07 01:00:16,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-04-07 01:00:16,751 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (13), 8 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 77 [2022-04-07 01:00:16,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:00:16,753 INFO L225 Difference]: With dead ends: 437 [2022-04-07 01:00:16,753 INFO L226 Difference]: Without dead ends: 374 [2022-04-07 01:00:16,753 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2022-04-07 01:00:16,754 INFO L913 BasicCegarLoop]: 313 mSDtfsCounter, 1056 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 326 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1066 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 1294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-04-07 01:00:16,754 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1066 Valid, 631 Invalid, 1294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 967 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2022-04-07 01:00:16,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-04-07 01:00:16,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 345. [2022-04-07 01:00:16,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 274 states have (on average 1.3503649635036497) internal successors, (370), 278 states have internal predecessors, (370), 38 states have call successors, (38), 30 states have call predecessors, (38), 32 states have return successors, (39), 36 states have call predecessors, (39), 33 states have call successors, (39) [2022-04-07 01:00:16,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 447 transitions. [2022-04-07 01:00:16,832 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 447 transitions. Word has length 77 [2022-04-07 01:00:16,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:00:16,832 INFO L478 AbstractCegarLoop]: Abstraction has 345 states and 447 transitions. [2022-04-07 01:00:16,832 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (13), 8 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-04-07 01:00:16,832 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 447 transitions. [2022-04-07 01:00:16,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-04-07 01:00:16,833 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:00:16,834 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:00:16,834 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-04-07 01:00:16,834 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:00:16,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:00:16,834 INFO L85 PathProgramCache]: Analyzing trace with hash 641442499, now seen corresponding path program 1 times [2022-04-07 01:00:16,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:00:16,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1927560808] [2022-04-07 01:00:16,835 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 01:00:16,835 INFO L85 PathProgramCache]: Analyzing trace with hash 641442499, now seen corresponding path program 2 times [2022-04-07 01:00:16,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:00:16,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205363357] [2022-04-07 01:00:16,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:00:16,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:00:16,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:16,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:00:16,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:17,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 01:00:17,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:17,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:00:17,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:17,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:00:17,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:17,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-04-07 01:00:17,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:17,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:00:17,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:17,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-07 01:00:17,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:17,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-04-07 01:00:17,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:17,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-07 01:00:17,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:17,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:00:17,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:00:17,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205363357] [2022-04-07 01:00:17,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205363357] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:00:17,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:00:17,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-07 01:00:17,174 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:00:17,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1927560808] [2022-04-07 01:00:17,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1927560808] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:00:17,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:00:17,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-07 01:00:17,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940723992] [2022-04-07 01:00:17,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:00:17,175 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-07 01:00:17,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:00:17,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-07 01:00:17,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-04-07 01:00:17,176 INFO L87 Difference]: Start difference. First operand 345 states and 447 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-04-07 01:00:19,250 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:00:22,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:00:22,962 INFO L93 Difference]: Finished difference Result 417 states and 534 transitions. [2022-04-07 01:00:22,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-07 01:00:22,962 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 75 [2022-04-07 01:00:22,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:00:22,964 INFO L225 Difference]: With dead ends: 417 [2022-04-07 01:00:22,964 INFO L226 Difference]: Without dead ends: 359 [2022-04-07 01:00:22,965 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2022-04-07 01:00:22,965 INFO L913 BasicCegarLoop]: 280 mSDtfsCounter, 862 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 1653 mSolverCounterSat, 315 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 1969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 315 IncrementalHoareTripleChecker+Valid, 1653 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-04-07 01:00:22,965 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [865 Valid, 716 Invalid, 1969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [315 Valid, 1653 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2022-04-07 01:00:22,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-04-07 01:00:23,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 344. [2022-04-07 01:00:23,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 273 states have (on average 1.336996336996337) internal successors, (365), 277 states have internal predecessors, (365), 38 states have call successors, (38), 30 states have call predecessors, (38), 32 states have return successors, (39), 36 states have call predecessors, (39), 33 states have call successors, (39) [2022-04-07 01:00:23,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 442 transitions. [2022-04-07 01:00:23,053 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 442 transitions. Word has length 75 [2022-04-07 01:00:23,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:00:23,053 INFO L478 AbstractCegarLoop]: Abstraction has 344 states and 442 transitions. [2022-04-07 01:00:23,053 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-04-07 01:00:23,054 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 442 transitions. [2022-04-07 01:00:23,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-04-07 01:00:23,056 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:00:23,056 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:00:23,056 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-04-07 01:00:23,056 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:00:23,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:00:23,056 INFO L85 PathProgramCache]: Analyzing trace with hash 476602328, now seen corresponding path program 1 times [2022-04-07 01:00:23,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:00:23,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [487448939] [2022-04-07 01:00:23,057 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 01:00:23,057 INFO L85 PathProgramCache]: Analyzing trace with hash 476602328, now seen corresponding path program 2 times [2022-04-07 01:00:23,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:00:23,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127701641] [2022-04-07 01:00:23,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:00:23,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:00:23,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:23,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:00:23,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:23,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 01:00:23,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:23,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:00:23,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:23,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:00:23,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:23,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-04-07 01:00:23,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:23,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:00:23,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:23,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-07 01:00:23,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:23,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-04-07 01:00:23,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:23,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-07 01:00:23,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:23,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:00:23,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:00:23,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127701641] [2022-04-07 01:00:23,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127701641] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:00:23,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:00:23,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-07 01:00:23,446 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:00:23,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [487448939] [2022-04-07 01:00:23,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [487448939] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:00:23,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:00:23,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-07 01:00:23,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544164883] [2022-04-07 01:00:23,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:00:23,447 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-07 01:00:23,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:00:23,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-07 01:00:23,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-04-07 01:00:23,447 INFO L87 Difference]: Start difference. First operand 344 states and 442 transitions. Second operand has 14 states, 14 states have (on average 4.0) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-04-07 01:00:25,672 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:00:30,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:00:30,083 INFO L93 Difference]: Finished difference Result 422 states and 536 transitions. [2022-04-07 01:00:30,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-04-07 01:00:30,084 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 76 [2022-04-07 01:00:30,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:00:30,086 INFO L225 Difference]: With dead ends: 422 [2022-04-07 01:00:30,086 INFO L226 Difference]: Without dead ends: 379 [2022-04-07 01:00:30,086 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=260, Invalid=930, Unknown=0, NotChecked=0, Total=1190 [2022-04-07 01:00:30,087 INFO L913 BasicCegarLoop]: 302 mSDtfsCounter, 855 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 1839 mSolverCounterSat, 316 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 2156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 1839 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-04-07 01:00:30,087 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [860 Valid, 749 Invalid, 2156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [316 Valid, 1839 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2022-04-07 01:00:30,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2022-04-07 01:00:30,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 344. [2022-04-07 01:00:30,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 273 states have (on average 1.3296703296703296) internal successors, (363), 277 states have internal predecessors, (363), 38 states have call successors, (38), 30 states have call predecessors, (38), 32 states have return successors, (38), 36 states have call predecessors, (38), 33 states have call successors, (38) [2022-04-07 01:00:30,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 439 transitions. [2022-04-07 01:00:30,160 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 439 transitions. Word has length 76 [2022-04-07 01:00:30,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:00:30,160 INFO L478 AbstractCegarLoop]: Abstraction has 344 states and 439 transitions. [2022-04-07 01:00:30,160 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-04-07 01:00:30,160 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 439 transitions. [2022-04-07 01:00:30,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-04-07 01:00:30,161 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:00:30,161 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:00:30,162 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-04-07 01:00:30,162 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:00:30,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:00:30,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1346047832, now seen corresponding path program 1 times [2022-04-07 01:00:30,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:00:30,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [561457479] [2022-04-07 01:00:30,162 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 01:00:30,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1346047832, now seen corresponding path program 2 times [2022-04-07 01:00:30,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:00:30,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307636586] [2022-04-07 01:00:30,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:00:30,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:00:30,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:30,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:00:30,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:30,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 01:00:30,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:30,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:00:30,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:30,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:00:30,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:30,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-04-07 01:00:30,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:30,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:00:30,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:30,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-07 01:00:30,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:30,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-04-07 01:00:30,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:30,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 01:00:30,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:30,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:00:30,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:00:30,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307636586] [2022-04-07 01:00:30,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307636586] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:00:30,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:00:30,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-07 01:00:30,487 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:00:30,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [561457479] [2022-04-07 01:00:30,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [561457479] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:00:30,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:00:30,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-07 01:00:30,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842510320] [2022-04-07 01:00:30,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:00:30,487 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-07 01:00:30,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:00:30,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-07 01:00:30,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-04-07 01:00:30,488 INFO L87 Difference]: Start difference. First operand 344 states and 439 transitions. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-04-07 01:00:32,555 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:00:34,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:00:34,677 INFO L93 Difference]: Finished difference Result 378 states and 480 transitions. [2022-04-07 01:00:34,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-07 01:00:34,677 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 76 [2022-04-07 01:00:34,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:00:34,678 INFO L225 Difference]: With dead ends: 378 [2022-04-07 01:00:34,678 INFO L226 Difference]: Without dead ends: 355 [2022-04-07 01:00:34,679 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2022-04-07 01:00:34,679 INFO L913 BasicCegarLoop]: 274 mSDtfsCounter, 801 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 273 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-04-07 01:00:34,679 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [804 Valid, 473 Invalid, 924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [273 Valid, 650 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2022-04-07 01:00:34,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2022-04-07 01:00:34,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 335. [2022-04-07 01:00:34,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 267 states have (on average 1.3333333333333333) internal successors, (356), 271 states have internal predecessors, (356), 37 states have call successors, (37), 29 states have call predecessors, (37), 30 states have return successors, (36), 34 states have call predecessors, (36), 32 states have call successors, (36) [2022-04-07 01:00:34,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 429 transitions. [2022-04-07 01:00:34,749 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 429 transitions. Word has length 76 [2022-04-07 01:00:34,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:00:34,749 INFO L478 AbstractCegarLoop]: Abstraction has 335 states and 429 transitions. [2022-04-07 01:00:34,749 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-04-07 01:00:34,749 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 429 transitions. [2022-04-07 01:00:34,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-04-07 01:00:34,750 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:00:34,750 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:00:34,751 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-04-07 01:00:34,751 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:00:34,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:00:34,751 INFO L85 PathProgramCache]: Analyzing trace with hash 2131421, now seen corresponding path program 1 times [2022-04-07 01:00:34,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:00:34,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [563843258] [2022-04-07 01:00:34,752 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 01:00:34,752 INFO L85 PathProgramCache]: Analyzing trace with hash 2131421, now seen corresponding path program 2 times [2022-04-07 01:00:34,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:00:34,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11800097] [2022-04-07 01:00:34,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:00:34,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:00:34,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:34,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:00:34,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:34,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 01:00:34,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:34,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:00:34,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:34,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:00:34,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:34,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-04-07 01:00:34,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:35,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:00:35,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:35,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-07 01:00:35,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:35,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-04-07 01:00:35,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:35,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-07 01:00:35,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:35,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:00:35,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:00:35,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11800097] [2022-04-07 01:00:35,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11800097] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:00:35,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:00:35,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-04-07 01:00:35,173 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:00:35,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [563843258] [2022-04-07 01:00:35,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [563843258] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:00:35,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:00:35,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-04-07 01:00:35,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864400510] [2022-04-07 01:00:35,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:00:35,174 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-07 01:00:35,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:00:35,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-07 01:00:35,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-04-07 01:00:35,175 INFO L87 Difference]: Start difference. First operand 335 states and 429 transitions. Second operand has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 1 states have call successors, (9) [2022-04-07 01:00:37,263 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:00:41,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:00:41,411 INFO L93 Difference]: Finished difference Result 398 states and 505 transitions. [2022-04-07 01:00:41,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-07 01:00:41,411 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 1 states have call successors, (9) Word has length 78 [2022-04-07 01:00:41,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:00:41,416 INFO L225 Difference]: With dead ends: 398 [2022-04-07 01:00:41,417 INFO L226 Difference]: Without dead ends: 354 [2022-04-07 01:00:41,417 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2022-04-07 01:00:41,418 INFO L913 BasicCegarLoop]: 271 mSDtfsCounter, 800 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 2332 mSolverCounterSat, 276 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 2609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 2332 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-04-07 01:00:41,418 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [804 Valid, 943 Invalid, 2609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 2332 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2022-04-07 01:00:41,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-04-07 01:00:41,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 334. [2022-04-07 01:00:41,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 266 states have (on average 1.330827067669173) internal successors, (354), 270 states have internal predecessors, (354), 37 states have call successors, (37), 29 states have call predecessors, (37), 30 states have return successors, (36), 34 states have call predecessors, (36), 32 states have call successors, (36) [2022-04-07 01:00:41,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 427 transitions. [2022-04-07 01:00:41,497 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 427 transitions. Word has length 78 [2022-04-07 01:00:41,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:00:41,497 INFO L478 AbstractCegarLoop]: Abstraction has 334 states and 427 transitions. [2022-04-07 01:00:41,497 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 1 states have call successors, (9) [2022-04-07 01:00:41,497 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 427 transitions. [2022-04-07 01:00:41,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-04-07 01:00:41,498 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:00:41,499 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:00:41,499 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-04-07 01:00:41,499 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:00:41,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:00:41,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1889602735, now seen corresponding path program 1 times [2022-04-07 01:00:41,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:00:41,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [825493793] [2022-04-07 01:00:41,500 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 01:00:41,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1889602735, now seen corresponding path program 2 times [2022-04-07 01:00:41,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:00:41,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862767532] [2022-04-07 01:00:41,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:00:41,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:00:41,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:41,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:00:41,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:41,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 01:00:41,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:41,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:00:41,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:41,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:00:41,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:41,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-04-07 01:00:41,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:41,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:00:41,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:41,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-07 01:00:41,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:41,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-04-07 01:00:41,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:41,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 01:00:41,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:41,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:00:41,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:00:41,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862767532] [2022-04-07 01:00:41,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862767532] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:00:41,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:00:41,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-07 01:00:41,966 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:00:41,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [825493793] [2022-04-07 01:00:41,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [825493793] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:00:41,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:00:41,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-07 01:00:41,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365367460] [2022-04-07 01:00:41,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:00:41,967 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-07 01:00:41,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:00:41,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-07 01:00:41,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-04-07 01:00:41,968 INFO L87 Difference]: Start difference. First operand 334 states and 427 transitions. Second operand has 16 states, 16 states have (on average 3.6875) internal successors, (59), 7 states have internal predecessors, (59), 2 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 1 states have call successors, (9) [2022-04-07 01:00:44,056 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:00:49,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:00:49,716 INFO L93 Difference]: Finished difference Result 475 states and 607 transitions. [2022-04-07 01:00:49,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-04-07 01:00:49,720 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.6875) internal successors, (59), 7 states have internal predecessors, (59), 2 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 1 states have call successors, (9) Word has length 79 [2022-04-07 01:00:49,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:00:49,726 INFO L225 Difference]: With dead ends: 475 [2022-04-07 01:00:49,726 INFO L226 Difference]: Without dead ends: 367 [2022-04-07 01:00:49,726 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=117, Invalid=585, Unknown=0, NotChecked=0, Total=702 [2022-04-07 01:00:49,727 INFO L913 BasicCegarLoop]: 266 mSDtfsCounter, 598 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 2748 mSolverCounterSat, 198 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 1038 SdHoareTripleChecker+Invalid, 2947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 2748 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-04-07 01:00:49,727 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [608 Valid, 1038 Invalid, 2947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 2748 Invalid, 1 Unknown, 0 Unchecked, 7.3s Time] [2022-04-07 01:00:49,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2022-04-07 01:00:49,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 338. [2022-04-07 01:00:49,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 270 states have (on average 1.3296296296296297) internal successors, (359), 275 states have internal predecessors, (359), 36 states have call successors, (36), 29 states have call predecessors, (36), 31 states have return successors, (37), 33 states have call predecessors, (37), 31 states have call successors, (37) [2022-04-07 01:00:49,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 432 transitions. [2022-04-07 01:00:49,813 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 432 transitions. Word has length 79 [2022-04-07 01:00:49,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:00:49,813 INFO L478 AbstractCegarLoop]: Abstraction has 338 states and 432 transitions. [2022-04-07 01:00:49,814 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.6875) internal successors, (59), 7 states have internal predecessors, (59), 2 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 1 states have call successors, (9) [2022-04-07 01:00:49,814 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 432 transitions. [2022-04-07 01:00:49,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-04-07 01:00:49,815 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:00:49,815 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:00:49,815 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-04-07 01:00:49,815 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:00:49,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:00:49,815 INFO L85 PathProgramCache]: Analyzing trace with hash -2045108737, now seen corresponding path program 1 times [2022-04-07 01:00:49,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:00:49,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [660119545] [2022-04-07 01:00:49,816 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 01:00:49,816 INFO L85 PathProgramCache]: Analyzing trace with hash -2045108737, now seen corresponding path program 2 times [2022-04-07 01:00:49,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:00:49,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739340014] [2022-04-07 01:00:49,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:00:49,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:00:49,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:50,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:00:50,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:50,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 01:00:50,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:50,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:00:50,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:50,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:00:50,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:50,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-04-07 01:00:50,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:50,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:00:50,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:50,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-07 01:00:50,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:50,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-04-07 01:00:50,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:50,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-07 01:00:50,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:50,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:00:50,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:00:50,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739340014] [2022-04-07 01:00:50,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739340014] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:00:50,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:00:50,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-07 01:00:50,228 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:00:50,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [660119545] [2022-04-07 01:00:50,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [660119545] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:00:50,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:00:50,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-07 01:00:50,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486422633] [2022-04-07 01:00:50,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:00:50,229 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-07 01:00:50,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:00:50,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-07 01:00:50,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-04-07 01:00:50,230 INFO L87 Difference]: Start difference. First operand 338 states and 432 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-04-07 01:00:52,374 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:00:55,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:00:55,641 INFO L93 Difference]: Finished difference Result 429 states and 546 transitions. [2022-04-07 01:00:55,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-04-07 01:00:55,642 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 79 [2022-04-07 01:00:55,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:00:55,643 INFO L225 Difference]: With dead ends: 429 [2022-04-07 01:00:55,643 INFO L226 Difference]: Without dead ends: 376 [2022-04-07 01:00:55,644 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=210, Invalid=602, Unknown=0, NotChecked=0, Total=812 [2022-04-07 01:00:55,644 INFO L913 BasicCegarLoop]: 277 mSDtfsCounter, 1112 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 1281 mSolverCounterSat, 372 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1127 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 1654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 1281 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-04-07 01:00:55,644 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1127 Valid, 548 Invalid, 1654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 1281 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2022-04-07 01:00:55,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2022-04-07 01:00:55,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 329. [2022-04-07 01:00:55,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 262 states have (on average 1.3244274809160306) internal successors, (347), 266 states have internal predecessors, (347), 36 states have call successors, (36), 29 states have call predecessors, (36), 30 states have return successors, (35), 33 states have call predecessors, (35), 31 states have call successors, (35) [2022-04-07 01:00:55,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 418 transitions. [2022-04-07 01:00:55,729 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 418 transitions. Word has length 79 [2022-04-07 01:00:55,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:00:55,730 INFO L478 AbstractCegarLoop]: Abstraction has 329 states and 418 transitions. [2022-04-07 01:00:55,730 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-04-07 01:00:55,730 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 418 transitions. [2022-04-07 01:00:55,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-04-07 01:00:55,731 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:00:55,731 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:00:55,731 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-04-07 01:00:55,731 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:00:55,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:00:55,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1773831806, now seen corresponding path program 1 times [2022-04-07 01:00:55,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:00:55,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [632467931] [2022-04-07 01:00:55,732 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 01:00:55,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1773831806, now seen corresponding path program 2 times [2022-04-07 01:00:55,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:00:55,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92288832] [2022-04-07 01:00:55,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:00:55,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:00:55,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:55,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:00:55,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:55,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 01:00:55,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:55,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:00:55,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:55,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:00:55,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:55,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-04-07 01:00:55,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:55,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:00:55,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:55,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-07 01:00:55,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:55,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-04-07 01:00:55,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:56,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-04-07 01:00:56,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:56,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:00:56,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:56,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-04-07 01:00:56,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:00:56,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:00:56,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:00:56,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92288832] [2022-04-07 01:00:56,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92288832] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:00:56,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:00:56,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-07 01:00:56,039 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:00:56,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [632467931] [2022-04-07 01:00:56,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [632467931] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:00:56,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:00:56,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-07 01:00:56,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859772866] [2022-04-07 01:00:56,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:00:56,040 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-07 01:00:56,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:00:56,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-07 01:00:56,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-04-07 01:00:56,040 INFO L87 Difference]: Start difference. First operand 329 states and 418 transitions. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (15), 9 states have call predecessors, (15), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-04-07 01:00:58,184 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:01:00,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:01:00,801 INFO L93 Difference]: Finished difference Result 416 states and 527 transitions. [2022-04-07 01:01:00,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-07 01:01:00,802 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (15), 9 states have call predecessors, (15), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 84 [2022-04-07 01:01:00,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:01:00,803 INFO L225 Difference]: With dead ends: 416 [2022-04-07 01:01:00,804 INFO L226 Difference]: Without dead ends: 357 [2022-04-07 01:01:00,804 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2022-04-07 01:01:00,805 INFO L913 BasicCegarLoop]: 263 mSDtfsCounter, 668 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 244 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 671 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-04-07 01:01:00,805 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [671 Valid, 491 Invalid, 946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 701 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2022-04-07 01:01:00,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2022-04-07 01:01:00,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 327. [2022-04-07 01:01:00,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 261 states have (on average 1.314176245210728) internal successors, (343), 264 states have internal predecessors, (343), 35 states have call successors, (35), 29 states have call predecessors, (35), 30 states have return successors, (35), 33 states have call predecessors, (35), 31 states have call successors, (35) [2022-04-07 01:01:00,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 413 transitions. [2022-04-07 01:01:00,894 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 413 transitions. Word has length 84 [2022-04-07 01:01:00,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:01:00,894 INFO L478 AbstractCegarLoop]: Abstraction has 327 states and 413 transitions. [2022-04-07 01:01:00,894 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (15), 9 states have call predecessors, (15), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-04-07 01:01:00,894 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 413 transitions. [2022-04-07 01:01:00,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-04-07 01:01:00,895 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:01:00,895 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:01:00,895 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-04-07 01:01:00,896 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:01:00,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:01:00,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1690581556, now seen corresponding path program 1 times [2022-04-07 01:01:00,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:01:00,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [121431533] [2022-04-07 01:01:00,896 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 01:01:00,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1690581556, now seen corresponding path program 2 times [2022-04-07 01:01:00,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:01:00,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422247992] [2022-04-07 01:01:00,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:01:00,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:01:00,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:01,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:01:01,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:01,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 01:01:01,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:01,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:01:01,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:01,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:01:01,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:01,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-04-07 01:01:01,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:01,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:01:01,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:01,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-07 01:01:01,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:01,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-04-07 01:01:01,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:01,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-07 01:01:01,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:01,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:01:01,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:01:01,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422247992] [2022-04-07 01:01:01,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422247992] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:01:01,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:01:01,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-07 01:01:01,264 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:01:01,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [121431533] [2022-04-07 01:01:01,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [121431533] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:01:01,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:01:01,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-07 01:01:01,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853521798] [2022-04-07 01:01:01,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:01:01,265 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-07 01:01:01,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:01:01,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-07 01:01:01,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-04-07 01:01:01,265 INFO L87 Difference]: Start difference. First operand 327 states and 413 transitions. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-04-07 01:01:03,365 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:01:05,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:01:05,251 INFO L93 Difference]: Finished difference Result 371 states and 465 transitions. [2022-04-07 01:01:05,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-07 01:01:05,252 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 80 [2022-04-07 01:01:05,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:01:05,254 INFO L225 Difference]: With dead ends: 371 [2022-04-07 01:01:05,254 INFO L226 Difference]: Without dead ends: 346 [2022-04-07 01:01:05,254 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2022-04-07 01:01:05,255 INFO L913 BasicCegarLoop]: 257 mSDtfsCounter, 893 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 286 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 903 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 1036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 286 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-04-07 01:01:05,255 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [903 Valid, 485 Invalid, 1036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [286 Valid, 749 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2022-04-07 01:01:05,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2022-04-07 01:01:05,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 326. [2022-04-07 01:01:05,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 260 states have (on average 1.3115384615384615) internal successors, (341), 263 states have internal predecessors, (341), 35 states have call successors, (35), 29 states have call predecessors, (35), 30 states have return successors, (35), 33 states have call predecessors, (35), 31 states have call successors, (35) [2022-04-07 01:01:05,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 411 transitions. [2022-04-07 01:01:05,358 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 411 transitions. Word has length 80 [2022-04-07 01:01:05,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:01:05,359 INFO L478 AbstractCegarLoop]: Abstraction has 326 states and 411 transitions. [2022-04-07 01:01:05,359 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-04-07 01:01:05,359 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 411 transitions. [2022-04-07 01:01:05,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-04-07 01:01:05,360 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:01:05,360 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:01:05,360 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-04-07 01:01:05,360 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:01:05,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:01:05,360 INFO L85 PathProgramCache]: Analyzing trace with hash 664933900, now seen corresponding path program 1 times [2022-04-07 01:01:05,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:01:05,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [909479918] [2022-04-07 01:01:05,361 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 01:01:05,361 INFO L85 PathProgramCache]: Analyzing trace with hash 664933900, now seen corresponding path program 2 times [2022-04-07 01:01:05,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:01:05,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715669509] [2022-04-07 01:01:05,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:01:05,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:01:05,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:05,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:01:05,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:05,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 01:01:05,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:05,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:01:05,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:05,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:01:05,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:05,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-04-07 01:01:05,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:05,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:01:05,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:05,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-07 01:01:05,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:05,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-04-07 01:01:05,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:05,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-07 01:01:05,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:05,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:01:05,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:01:05,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715669509] [2022-04-07 01:01:05,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715669509] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:01:05,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:01:05,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-04-07 01:01:05,754 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:01:05,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [909479918] [2022-04-07 01:01:05,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [909479918] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:01:05,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:01:05,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-04-07 01:01:05,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764713491] [2022-04-07 01:01:05,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:01:05,755 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-07 01:01:05,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:01:05,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-07 01:01:05,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-04-07 01:01:05,756 INFO L87 Difference]: Start difference. First operand 326 states and 411 transitions. Second operand has 15 states, 15 states have (on average 4.0) internal successors, (60), 8 states have internal predecessors, (60), 4 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-04-07 01:01:07,971 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:01:11,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:01:11,167 INFO L93 Difference]: Finished difference Result 353 states and 444 transitions. [2022-04-07 01:01:11,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-04-07 01:01:11,169 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.0) internal successors, (60), 8 states have internal predecessors, (60), 4 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 80 [2022-04-07 01:01:11,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:01:11,170 INFO L225 Difference]: With dead ends: 353 [2022-04-07 01:01:11,170 INFO L226 Difference]: Without dead ends: 205 [2022-04-07 01:01:11,171 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=198, Invalid=672, Unknown=0, NotChecked=0, Total=870 [2022-04-07 01:01:11,171 INFO L913 BasicCegarLoop]: 230 mSDtfsCounter, 1430 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 1230 mSolverCounterSat, 492 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1436 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 1723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 492 IncrementalHoareTripleChecker+Valid, 1230 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-04-07 01:01:11,172 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1436 Valid, 467 Invalid, 1723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [492 Valid, 1230 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2022-04-07 01:01:11,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-04-07 01:01:11,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 186. [2022-04-07 01:01:11,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 141 states have (on average 1.2411347517730495) internal successors, (175), 144 states have internal predecessors, (175), 23 states have call successors, (23), 21 states have call predecessors, (23), 21 states have return successors, (22), 20 states have call predecessors, (22), 19 states have call successors, (22) [2022-04-07 01:01:11,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 220 transitions. [2022-04-07 01:01:11,237 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 220 transitions. Word has length 80 [2022-04-07 01:01:11,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:01:11,238 INFO L478 AbstractCegarLoop]: Abstraction has 186 states and 220 transitions. [2022-04-07 01:01:11,238 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.0) internal successors, (60), 8 states have internal predecessors, (60), 4 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-04-07 01:01:11,238 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 220 transitions. [2022-04-07 01:01:11,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-04-07 01:01:11,238 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:01:11,239 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:01:11,239 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-04-07 01:01:11,239 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:01:11,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:01:11,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1299022194, now seen corresponding path program 1 times [2022-04-07 01:01:11,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:01:11,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [559466575] [2022-04-07 01:01:11,240 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 01:01:11,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1299022194, now seen corresponding path program 2 times [2022-04-07 01:01:11,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:01:11,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928720695] [2022-04-07 01:01:11,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:01:11,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:01:11,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:11,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:01:11,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:11,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 01:01:11,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:11,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:01:11,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:11,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:01:11,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:11,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-04-07 01:01:11,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:11,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:01:11,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:11,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-07 01:01:11,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:11,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-04-07 01:01:11,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:11,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-04-07 01:01:11,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:11,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-07 01:01:11,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:11,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:01:11,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:11,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:01:11,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:01:11,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928720695] [2022-04-07 01:01:11,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928720695] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:01:11,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:01:11,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-07 01:01:11,616 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:01:11,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [559466575] [2022-04-07 01:01:11,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [559466575] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:01:11,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:01:11,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-07 01:01:11,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812847548] [2022-04-07 01:01:11,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:01:11,618 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-07 01:01:11,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:01:11,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-07 01:01:11,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-04-07 01:01:11,618 INFO L87 Difference]: Start difference. First operand 186 states and 220 transitions. Second operand has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (15), 9 states have call predecessors, (15), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-04-07 01:01:13,715 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:01:17,317 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:01:19,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:01:19,448 INFO L93 Difference]: Finished difference Result 300 states and 368 transitions. [2022-04-07 01:01:19,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-04-07 01:01:19,449 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (15), 9 states have call predecessors, (15), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 88 [2022-04-07 01:01:19,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:01:19,450 INFO L225 Difference]: With dead ends: 300 [2022-04-07 01:01:19,450 INFO L226 Difference]: Without dead ends: 237 [2022-04-07 01:01:19,450 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2022-04-07 01:01:19,451 INFO L913 BasicCegarLoop]: 135 mSDtfsCounter, 423 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 231 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-04-07 01:01:19,451 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [428 Valid, 356 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 723 Invalid, 1 Unknown, 0 Unchecked, 7.5s Time] [2022-04-07 01:01:19,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-04-07 01:01:19,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 199. [2022-04-07 01:01:19,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 152 states have (on average 1.2236842105263157) internal successors, (186), 155 states have internal predecessors, (186), 23 states have call successors, (23), 21 states have call predecessors, (23), 23 states have return successors, (24), 22 states have call predecessors, (24), 19 states have call successors, (24) [2022-04-07 01:01:19,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 233 transitions. [2022-04-07 01:01:19,526 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 233 transitions. Word has length 88 [2022-04-07 01:01:19,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:01:19,527 INFO L478 AbstractCegarLoop]: Abstraction has 199 states and 233 transitions. [2022-04-07 01:01:19,527 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (15), 9 states have call predecessors, (15), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-04-07 01:01:19,527 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 233 transitions. [2022-04-07 01:01:19,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-04-07 01:01:19,527 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:01:19,528 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:01:19,528 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-04-07 01:01:19,528 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:01:19,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:01:19,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1324935307, now seen corresponding path program 1 times [2022-04-07 01:01:19,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:01:19,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [869875197] [2022-04-07 01:01:19,529 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 01:01:19,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1324935307, now seen corresponding path program 2 times [2022-04-07 01:01:19,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:01:19,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072985900] [2022-04-07 01:01:19,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:01:19,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:01:19,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:19,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:01:19,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:19,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 01:01:19,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:19,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:01:19,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:19,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:01:19,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:19,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-04-07 01:01:19,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:19,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:01:19,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:19,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-07 01:01:19,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:19,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-04-07 01:01:19,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:19,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-04-07 01:01:19,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:19,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-07 01:01:19,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:19,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:01:19,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:19,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:01:19,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:01:19,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072985900] [2022-04-07 01:01:19,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072985900] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:01:19,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:01:19,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-07 01:01:19,861 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:01:19,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [869875197] [2022-04-07 01:01:19,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [869875197] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:01:19,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:01:19,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-07 01:01:19,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020378652] [2022-04-07 01:01:19,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:01:19,862 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-07 01:01:19,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:01:19,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-07 01:01:19,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-04-07 01:01:19,863 INFO L87 Difference]: Start difference. First operand 199 states and 233 transitions. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (15), 10 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-04-07 01:01:21,937 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:01:23,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:01:23,894 INFO L93 Difference]: Finished difference Result 437 states and 522 transitions. [2022-04-07 01:01:23,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-07 01:01:23,895 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (15), 10 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 89 [2022-04-07 01:01:23,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:01:23,897 INFO L225 Difference]: With dead ends: 437 [2022-04-07 01:01:23,897 INFO L226 Difference]: Without dead ends: 408 [2022-04-07 01:01:23,897 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=109, Invalid=233, Unknown=0, NotChecked=0, Total=342 [2022-04-07 01:01:23,898 INFO L913 BasicCegarLoop]: 143 mSDtfsCounter, 610 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 288 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-04-07 01:01:23,898 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [616 Valid, 267 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [288 Valid, 403 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2022-04-07 01:01:23,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2022-04-07 01:01:24,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 345. [2022-04-07 01:01:24,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 268 states have (on average 1.2350746268656716) internal successors, (331), 272 states have internal predecessors, (331), 36 states have call successors, (36), 34 states have call predecessors, (36), 40 states have return successors, (42), 38 states have call predecessors, (42), 32 states have call successors, (42) [2022-04-07 01:01:24,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 409 transitions. [2022-04-07 01:01:24,008 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 409 transitions. Word has length 89 [2022-04-07 01:01:24,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:01:24,008 INFO L478 AbstractCegarLoop]: Abstraction has 345 states and 409 transitions. [2022-04-07 01:01:24,009 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (15), 10 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-04-07 01:01:24,009 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 409 transitions. [2022-04-07 01:01:24,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-04-07 01:01:24,010 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:01:24,010 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:01:24,010 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-04-07 01:01:24,010 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:01:24,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:01:24,010 INFO L85 PathProgramCache]: Analyzing trace with hash 450072055, now seen corresponding path program 1 times [2022-04-07 01:01:24,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:01:24,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1921962916] [2022-04-07 01:01:24,011 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 01:01:24,011 INFO L85 PathProgramCache]: Analyzing trace with hash 450072055, now seen corresponding path program 2 times [2022-04-07 01:01:24,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:01:24,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112364419] [2022-04-07 01:01:24,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:01:24,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:01:24,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:24,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:01:24,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:24,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 01:01:24,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:24,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:01:24,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:24,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:01:24,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:24,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-04-07 01:01:24,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:24,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:01:24,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:24,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-07 01:01:24,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:24,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-04-07 01:01:24,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:24,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-04-07 01:01:24,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:24,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-07 01:01:24,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:24,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:01:24,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:24,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:01:24,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:01:24,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112364419] [2022-04-07 01:01:24,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112364419] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:01:24,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:01:24,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-07 01:01:24,388 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:01:24,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1921962916] [2022-04-07 01:01:24,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1921962916] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:01:24,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:01:24,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-07 01:01:24,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857569486] [2022-04-07 01:01:24,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:01:24,389 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-07 01:01:24,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:01:24,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-07 01:01:24,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-04-07 01:01:24,390 INFO L87 Difference]: Start difference. First operand 345 states and 409 transitions. Second operand has 12 states, 12 states have (on average 5.25) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (15), 9 states have call predecessors, (15), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-04-07 01:01:26,460 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 [] [2022-04-07 01:01:29,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:01:29,854 INFO L93 Difference]: Finished difference Result 657 states and 796 transitions. [2022-04-07 01:01:29,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-07 01:01:29,854 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (15), 9 states have call predecessors, (15), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 89 [2022-04-07 01:01:29,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:01:29,856 INFO L225 Difference]: With dead ends: 657 [2022-04-07 01:01:29,856 INFO L226 Difference]: Without dead ends: 399 [2022-04-07 01:01:29,857 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-04-07 01:01:29,857 INFO L913 BasicCegarLoop]: 139 mSDtfsCounter, 210 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 123 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 741 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-04-07 01:01:29,857 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 391 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 741 Invalid, 1 Unknown, 0 Unchecked, 5.2s Time] [2022-04-07 01:01:29,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2022-04-07 01:01:29,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 337. [2022-04-07 01:01:29,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 262 states have (on average 1.2328244274809161) internal successors, (323), 266 states have internal predecessors, (323), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-04-07 01:01:29,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 399 transitions. [2022-04-07 01:01:29,964 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 399 transitions. Word has length 89 [2022-04-07 01:01:29,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:01:29,964 INFO L478 AbstractCegarLoop]: Abstraction has 337 states and 399 transitions. [2022-04-07 01:01:29,964 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (15), 9 states have call predecessors, (15), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-04-07 01:01:29,964 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 399 transitions. [2022-04-07 01:01:29,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-04-07 01:01:29,965 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:01:29,965 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:01:29,965 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-04-07 01:01:29,965 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:01:29,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:01:29,966 INFO L85 PathProgramCache]: Analyzing trace with hash -623916271, now seen corresponding path program 1 times [2022-04-07 01:01:29,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:01:29,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [798779507] [2022-04-07 01:01:29,966 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 01:01:29,966 INFO L85 PathProgramCache]: Analyzing trace with hash -623916271, now seen corresponding path program 2 times [2022-04-07 01:01:29,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:01:29,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930166945] [2022-04-07 01:01:29,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:01:29,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:01:30,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:30,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:01:30,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:30,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 01:01:30,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:30,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:01:30,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:30,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:01:30,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:30,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-04-07 01:01:30,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:30,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:01:30,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:30,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-07 01:01:30,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:30,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-07 01:01:30,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:30,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-04-07 01:01:30,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:30,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-04-07 01:01:30,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:30,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-04-07 01:01:30,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:30,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-07 01:01:30,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:30,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:01:30,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:30,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:01:30,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:01:30,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930166945] [2022-04-07 01:01:30,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930166945] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:01:30,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:01:30,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-07 01:01:30,709 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:01:30,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [798779507] [2022-04-07 01:01:30,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [798779507] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:01:30,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:01:30,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-07 01:01:30,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497252365] [2022-04-07 01:01:30,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:01:30,710 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-07 01:01:30,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:01:30,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-07 01:01:30,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-04-07 01:01:30,712 INFO L87 Difference]: Start difference. First operand 337 states and 399 transitions. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-04-07 01:01:32,788 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:01:35,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:01:35,470 INFO L93 Difference]: Finished difference Result 675 states and 810 transitions. [2022-04-07 01:01:35,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-07 01:01:35,471 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 102 [2022-04-07 01:01:35,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:01:35,472 INFO L225 Difference]: With dead ends: 675 [2022-04-07 01:01:35,473 INFO L226 Difference]: Without dead ends: 389 [2022-04-07 01:01:35,473 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2022-04-07 01:01:35,474 INFO L913 BasicCegarLoop]: 139 mSDtfsCounter, 332 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 171 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-04-07 01:01:35,474 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [335 Valid, 327 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 445 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2022-04-07 01:01:35,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2022-04-07 01:01:35,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 339. [2022-04-07 01:01:35,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 264 states have (on average 1.231060606060606) internal successors, (325), 268 states have internal predecessors, (325), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-04-07 01:01:35,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 401 transitions. [2022-04-07 01:01:35,609 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 401 transitions. Word has length 102 [2022-04-07 01:01:35,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:01:35,609 INFO L478 AbstractCegarLoop]: Abstraction has 339 states and 401 transitions. [2022-04-07 01:01:35,609 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-04-07 01:01:35,609 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 401 transitions. [2022-04-07 01:01:35,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-04-07 01:01:35,610 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:01:35,610 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:01:35,610 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-04-07 01:01:35,611 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:01:35,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:01:35,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1023672093, now seen corresponding path program 1 times [2022-04-07 01:01:35,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:01:35,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [359386580] [2022-04-07 01:01:35,618 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:01:35,618 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:01:35,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1023672093, now seen corresponding path program 2 times [2022-04-07 01:01:35,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:01:35,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992369069] [2022-04-07 01:01:35,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:01:35,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:01:35,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:36,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:01:36,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:36,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 01:01:36,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:36,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:01:36,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:36,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:01:36,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:36,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-04-07 01:01:36,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:36,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:01:36,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:36,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-07 01:01:36,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:36,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:01:36,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:36,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-04-07 01:01:36,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:36,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-04-07 01:01:36,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:36,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-04-07 01:01:36,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:36,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-07 01:01:36,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:36,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:01:36,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:36,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:01:36,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:01:36,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992369069] [2022-04-07 01:01:36,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992369069] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:01:36,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548925274] [2022-04-07 01:01:36,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:01:36,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:01:36,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:01:36,386 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:01:36,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-07 01:01:37,446 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:01:37,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:01:37,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 1752 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-07 01:01:37,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:01:37,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:01:37,681 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:01:37,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548925274] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:01:37,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:01:37,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2022-04-07 01:01:37,682 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:01:37,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [359386580] [2022-04-07 01:01:37,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [359386580] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:01:37,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:01:37,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-07 01:01:37,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921223868] [2022-04-07 01:01:37,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:01:37,682 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-07 01:01:37,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:01:37,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-07 01:01:37,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-04-07 01:01:37,683 INFO L87 Difference]: Start difference. First operand 339 states and 401 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-04-07 01:01:37,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:01:37,884 INFO L93 Difference]: Finished difference Result 573 states and 692 transitions. [2022-04-07 01:01:37,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-07 01:01:37,884 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 103 [2022-04-07 01:01:37,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:01:37,886 INFO L225 Difference]: With dead ends: 573 [2022-04-07 01:01:37,886 INFO L226 Difference]: Without dead ends: 341 [2022-04-07 01:01:37,887 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-04-07 01:01:37,887 INFO L913 BasicCegarLoop]: 162 mSDtfsCounter, 3 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-07 01:01:37,887 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 484 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-07 01:01:37,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2022-04-07 01:01:38,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2022-04-07 01:01:38,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 266 states have (on average 1.2293233082706767) internal successors, (327), 270 states have internal predecessors, (327), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-04-07 01:01:38,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 403 transitions. [2022-04-07 01:01:38,041 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 403 transitions. Word has length 103 [2022-04-07 01:01:38,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:01:38,042 INFO L478 AbstractCegarLoop]: Abstraction has 341 states and 403 transitions. [2022-04-07 01:01:38,042 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-04-07 01:01:38,043 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 403 transitions. [2022-04-07 01:01:38,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-04-07 01:01:38,043 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:01:38,044 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:01:38,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-07 01:01:38,256 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,SelfDestructingSolverStorable26 [2022-04-07 01:01:38,257 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:01:38,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:01:38,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1130425434, now seen corresponding path program 1 times [2022-04-07 01:01:38,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:01:38,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [464221840] [2022-04-07 01:01:38,258 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:01:38,259 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:01:38,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1130425434, now seen corresponding path program 2 times [2022-04-07 01:01:38,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:01:38,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222037136] [2022-04-07 01:01:38,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:01:38,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:01:38,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:38,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:01:38,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:38,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 01:01:38,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:38,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:01:38,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:39,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:01:39,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:39,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-04-07 01:01:39,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:39,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:01:39,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:39,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-07 01:01:39,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:39,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:01:39,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:39,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-04-07 01:01:39,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:39,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-04-07 01:01:39,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:39,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-04-07 01:01:39,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:39,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-07 01:01:39,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:39,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:01:39,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:39,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:01:39,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:01:39,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222037136] [2022-04-07 01:01:39,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222037136] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:01:39,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519630167] [2022-04-07 01:01:39,244 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:01:39,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:01:39,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:01:39,245 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:01:39,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-07 01:01:40,499 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:01:40,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:01:40,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 1752 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-07 01:01:40,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:01:40,696 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-07 01:01:40,696 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:01:40,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519630167] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:01:40,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:01:40,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2022-04-07 01:01:40,697 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:01:40,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [464221840] [2022-04-07 01:01:40,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [464221840] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:01:40,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:01:40,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-07 01:01:40,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172147810] [2022-04-07 01:01:40,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:01:40,698 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-07 01:01:40,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:01:40,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-07 01:01:40,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-04-07 01:01:40,699 INFO L87 Difference]: Start difference. First operand 341 states and 403 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-04-07 01:01:40,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:01:40,871 INFO L93 Difference]: Finished difference Result 567 states and 682 transitions. [2022-04-07 01:01:40,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-07 01:01:40,871 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 104 [2022-04-07 01:01:40,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:01:40,873 INFO L225 Difference]: With dead ends: 567 [2022-04-07 01:01:40,873 INFO L226 Difference]: Without dead ends: 343 [2022-04-07 01:01:40,874 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-04-07 01:01:40,874 INFO L913 BasicCegarLoop]: 163 mSDtfsCounter, 2 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-07 01:01:40,874 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 485 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-07 01:01:40,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-04-07 01:01:41,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2022-04-07 01:01:41,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 268 states have (on average 1.2276119402985075) internal successors, (329), 272 states have internal predecessors, (329), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-04-07 01:01:41,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 405 transitions. [2022-04-07 01:01:41,026 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 405 transitions. Word has length 104 [2022-04-07 01:01:41,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:01:41,026 INFO L478 AbstractCegarLoop]: Abstraction has 343 states and 405 transitions. [2022-04-07 01:01:41,027 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-04-07 01:01:41,027 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 405 transitions. [2022-04-07 01:01:41,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-04-07 01:01:41,028 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:01:41,028 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:01:41,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-07 01:01:41,251 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,SelfDestructingSolverStorable27 [2022-04-07 01:01:41,251 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:01:41,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:01:41,252 INFO L85 PathProgramCache]: Analyzing trace with hash 535693243, now seen corresponding path program 1 times [2022-04-07 01:01:41,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:01:41,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [644583883] [2022-04-07 01:01:41,253 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:01:41,253 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:01:41,253 INFO L85 PathProgramCache]: Analyzing trace with hash 535693243, now seen corresponding path program 2 times [2022-04-07 01:01:41,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:01:41,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369230545] [2022-04-07 01:01:41,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:01:41,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:01:41,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:41,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:01:41,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:41,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 01:01:41,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:41,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:01:41,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:41,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:01:41,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:41,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-04-07 01:01:41,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:42,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:01:42,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:42,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-07 01:01:42,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:42,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:01:42,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:42,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-04-07 01:01:42,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:42,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-04-07 01:01:42,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:42,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-04-07 01:01:42,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:42,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-07 01:01:42,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:42,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:01:42,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:42,176 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-07 01:01:42,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:01:42,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369230545] [2022-04-07 01:01:42,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369230545] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:01:42,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842489798] [2022-04-07 01:01:42,177 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:01:42,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:01:42,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:01:42,178 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:01:42,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-07 01:01:44,495 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:01:44,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:01:44,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 1752 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-07 01:01:44,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:01:44,684 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-07 01:01:44,684 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:01:44,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842489798] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:01:44,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:01:44,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-04-07 01:01:44,687 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:01:44,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [644583883] [2022-04-07 01:01:44,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [644583883] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:01:44,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:01:44,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-07 01:01:44,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676325815] [2022-04-07 01:01:44,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:01:44,688 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-07 01:01:44,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:01:44,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-07 01:01:44,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-04-07 01:01:44,689 INFO L87 Difference]: Start difference. First operand 343 states and 405 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (13), 3 states have call predecessors, (13), 1 states have call successors, (13) [2022-04-07 01:01:44,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:01:44,855 INFO L93 Difference]: Finished difference Result 439 states and 524 transitions. [2022-04-07 01:01:44,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-07 01:01:44,855 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (13), 3 states have call predecessors, (13), 1 states have call successors, (13) Word has length 105 [2022-04-07 01:01:44,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:01:44,857 INFO L225 Difference]: With dead ends: 439 [2022-04-07 01:01:44,857 INFO L226 Difference]: Without dead ends: 329 [2022-04-07 01:01:44,858 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-04-07 01:01:44,858 INFO L913 BasicCegarLoop]: 162 mSDtfsCounter, 15 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-07 01:01:44,859 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 628 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-07 01:01:44,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2022-04-07 01:01:45,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2022-04-07 01:01:45,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 254 states have (on average 1.2165354330708662) internal successors, (309), 258 states have internal predecessors, (309), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-04-07 01:01:45,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 385 transitions. [2022-04-07 01:01:45,037 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 385 transitions. Word has length 105 [2022-04-07 01:01:45,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:01:45,037 INFO L478 AbstractCegarLoop]: Abstraction has 329 states and 385 transitions. [2022-04-07 01:01:45,037 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (13), 3 states have call predecessors, (13), 1 states have call successors, (13) [2022-04-07 01:01:45,037 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 385 transitions. [2022-04-07 01:01:45,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-04-07 01:01:45,038 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:01:45,038 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:01:45,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-07 01:01:45,259 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,SelfDestructingSolverStorable28 [2022-04-07 01:01:45,259 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:01:45,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:01:45,260 INFO L85 PathProgramCache]: Analyzing trace with hash 131837236, now seen corresponding path program 1 times [2022-04-07 01:01:45,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:01:45,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [252765016] [2022-04-07 01:01:45,261 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:01:45,261 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:01:45,262 INFO L85 PathProgramCache]: Analyzing trace with hash 131837236, now seen corresponding path program 2 times [2022-04-07 01:01:45,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:01:45,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692922840] [2022-04-07 01:01:45,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:01:45,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:01:45,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:45,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:01:45,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:45,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 01:01:45,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:45,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:01:45,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:45,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:01:45,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:45,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-04-07 01:01:45,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:45,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:01:45,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:45,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-07 01:01:45,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:45,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:01:45,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:45,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-04-07 01:01:45,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:45,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-04-07 01:01:45,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:45,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-04-07 01:01:45,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:45,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-07 01:01:45,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:45,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:01:45,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:45,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-07 01:01:45,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:45,736 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-07 01:01:45,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:01:45,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692922840] [2022-04-07 01:01:45,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692922840] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:01:45,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:01:45,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-07 01:01:45,737 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:01:45,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [252765016] [2022-04-07 01:01:45,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [252765016] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:01:45,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:01:45,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-07 01:01:45,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507129119] [2022-04-07 01:01:45,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:01:45,738 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-07 01:01:45,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:01:45,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-07 01:01:45,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-04-07 01:01:45,738 INFO L87 Difference]: Start difference. First operand 329 states and 385 transitions. Second operand has 14 states, 14 states have (on average 5.5) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (18), 11 states have call predecessors, (18), 4 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2022-04-07 01:01:47,871 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:01:49,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:01:49,524 INFO L93 Difference]: Finished difference Result 453 states and 540 transitions. [2022-04-07 01:01:49,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-07 01:01:49,525 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.5) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (18), 11 states have call predecessors, (18), 4 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) Word has length 109 [2022-04-07 01:01:49,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:01:49,526 INFO L225 Difference]: With dead ends: 453 [2022-04-07 01:01:49,526 INFO L226 Difference]: Without dead ends: 357 [2022-04-07 01:01:49,527 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=164, Invalid=538, Unknown=0, NotChecked=0, Total=702 [2022-04-07 01:01:49,528 INFO L913 BasicCegarLoop]: 132 mSDtfsCounter, 367 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 174 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-04-07 01:01:49,528 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [370 Valid, 326 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 604 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2022-04-07 01:01:49,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2022-04-07 01:01:49,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 317. [2022-04-07 01:01:49,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 244 states have (on average 1.209016393442623) internal successors, (295), 248 states have internal predecessors, (295), 36 states have call successors, (36), 34 states have call predecessors, (36), 36 states have return successors, (38), 34 states have call predecessors, (38), 32 states have call successors, (38) [2022-04-07 01:01:49,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 369 transitions. [2022-04-07 01:01:49,657 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 369 transitions. Word has length 109 [2022-04-07 01:01:49,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:01:49,657 INFO L478 AbstractCegarLoop]: Abstraction has 317 states and 369 transitions. [2022-04-07 01:01:49,657 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.5) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (18), 11 states have call predecessors, (18), 4 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2022-04-07 01:01:49,657 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 369 transitions. [2022-04-07 01:01:49,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-04-07 01:01:49,658 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:01:49,658 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:01:49,658 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-04-07 01:01:49,658 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:01:49,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:01:49,659 INFO L85 PathProgramCache]: Analyzing trace with hash 189907132, now seen corresponding path program 1 times [2022-04-07 01:01:49,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:01:49,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [999845236] [2022-04-07 01:01:49,660 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:01:49,660 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:01:49,660 INFO L85 PathProgramCache]: Analyzing trace with hash 189907132, now seen corresponding path program 2 times [2022-04-07 01:01:49,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:01:49,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809664747] [2022-04-07 01:01:49,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:01:49,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:01:49,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:49,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:01:49,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:49,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 01:01:49,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:49,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:01:49,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:49,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:01:49,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:49,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-04-07 01:01:49,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:49,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:01:49,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:49,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-07 01:01:49,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:49,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:01:49,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:49,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-04-07 01:01:49,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:49,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-04-07 01:01:49,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:50,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-04-07 01:01:50,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:50,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-07 01:01:50,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:50,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:01:50,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:50,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-07 01:01:50,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:50,043 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-07 01:01:50,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:01:50,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809664747] [2022-04-07 01:01:50,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809664747] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:01:50,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:01:50,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-07 01:01:50,044 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:01:50,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [999845236] [2022-04-07 01:01:50,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [999845236] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:01:50,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:01:50,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-07 01:01:50,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967161947] [2022-04-07 01:01:50,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:01:50,045 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-07 01:01:50,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:01:50,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-07 01:01:50,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-04-07 01:01:50,046 INFO L87 Difference]: Start difference. First operand 317 states and 369 transitions. Second operand has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (18), 10 states have call predecessors, (18), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-04-07 01:01:52,130 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:01:53,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:01:53,468 INFO L93 Difference]: Finished difference Result 389 states and 464 transitions. [2022-04-07 01:01:53,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-07 01:01:53,468 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (18), 10 states have call predecessors, (18), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 111 [2022-04-07 01:01:53,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:01:53,470 INFO L225 Difference]: With dead ends: 389 [2022-04-07 01:01:53,470 INFO L226 Difference]: Without dead ends: 386 [2022-04-07 01:01:53,470 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2022-04-07 01:01:53,471 INFO L913 BasicCegarLoop]: 150 mSDtfsCounter, 274 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 144 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-04-07 01:01:53,471 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 367 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 398 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2022-04-07 01:01:53,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2022-04-07 01:01:53,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 325. [2022-04-07 01:01:53,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 252 states have (on average 1.2182539682539681) internal successors, (307), 256 states have internal predecessors, (307), 36 states have call successors, (36), 34 states have call predecessors, (36), 36 states have return successors, (38), 34 states have call predecessors, (38), 32 states have call successors, (38) [2022-04-07 01:01:53,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 381 transitions. [2022-04-07 01:01:53,576 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 381 transitions. Word has length 111 [2022-04-07 01:01:53,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:01:53,577 INFO L478 AbstractCegarLoop]: Abstraction has 325 states and 381 transitions. [2022-04-07 01:01:53,577 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (18), 10 states have call predecessors, (18), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-04-07 01:01:53,577 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 381 transitions. [2022-04-07 01:01:53,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-04-07 01:01:53,578 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:01:53,578 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:01:53,578 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-04-07 01:01:53,578 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:01:53,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:01:53,578 INFO L85 PathProgramCache]: Analyzing trace with hash -998022627, now seen corresponding path program 1 times [2022-04-07 01:01:53,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:01:53,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1752336150] [2022-04-07 01:01:53,580 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:01:53,580 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:01:53,580 INFO L85 PathProgramCache]: Analyzing trace with hash -998022627, now seen corresponding path program 2 times [2022-04-07 01:01:53,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:01:53,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290249950] [2022-04-07 01:01:53,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:01:53,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:01:53,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:53,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:01:53,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:53,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 01:01:53,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:53,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:01:53,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:53,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:01:53,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:53,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-04-07 01:01:53,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:53,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:01:53,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:53,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-07 01:01:53,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:53,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:01:53,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:53,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-04-07 01:01:53,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:53,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-04-07 01:01:53,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:53,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-04-07 01:01:53,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:53,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-07 01:01:53,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:53,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:01:53,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:53,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-07 01:01:53,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:53,990 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-07 01:01:53,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:01:53,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290249950] [2022-04-07 01:01:53,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290249950] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:01:53,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:01:53,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-07 01:01:53,991 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:01:53,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1752336150] [2022-04-07 01:01:53,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1752336150] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:01:53,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:01:53,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-07 01:01:53,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959244312] [2022-04-07 01:01:53,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:01:53,992 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-07 01:01:53,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:01:53,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-07 01:01:53,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-04-07 01:01:53,993 INFO L87 Difference]: Start difference. First operand 325 states and 381 transitions. Second operand has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (18), 10 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2022-04-07 01:01:56,072 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:01:57,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:01:57,052 INFO L93 Difference]: Finished difference Result 465 states and 556 transitions. [2022-04-07 01:01:57,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-07 01:01:57,052 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (18), 10 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 111 [2022-04-07 01:01:57,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:01:57,054 INFO L225 Difference]: With dead ends: 465 [2022-04-07 01:01:57,054 INFO L226 Difference]: Without dead ends: 377 [2022-04-07 01:01:57,054 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2022-04-07 01:01:57,055 INFO L913 BasicCegarLoop]: 144 mSDtfsCounter, 259 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 132 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-04-07 01:01:57,055 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 285 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 332 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2022-04-07 01:01:57,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-04-07 01:01:57,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 331. [2022-04-07 01:01:57,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 258 states have (on average 1.2131782945736433) internal successors, (313), 262 states have internal predecessors, (313), 36 states have call successors, (36), 34 states have call predecessors, (36), 36 states have return successors, (38), 34 states have call predecessors, (38), 32 states have call successors, (38) [2022-04-07 01:01:57,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 387 transitions. [2022-04-07 01:01:57,201 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 387 transitions. Word has length 111 [2022-04-07 01:01:57,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:01:57,202 INFO L478 AbstractCegarLoop]: Abstraction has 331 states and 387 transitions. [2022-04-07 01:01:57,202 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (18), 10 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2022-04-07 01:01:57,202 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 387 transitions. [2022-04-07 01:01:57,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-04-07 01:01:57,203 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:01:57,203 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:01:57,203 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-04-07 01:01:57,203 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:01:57,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:01:57,203 INFO L85 PathProgramCache]: Analyzing trace with hash 687528413, now seen corresponding path program 1 times [2022-04-07 01:01:57,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:01:57,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1522313339] [2022-04-07 01:01:57,204 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:01:57,204 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:01:57,204 INFO L85 PathProgramCache]: Analyzing trace with hash 687528413, now seen corresponding path program 2 times [2022-04-07 01:01:57,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:01:57,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485245589] [2022-04-07 01:01:57,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:01:57,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:01:57,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:57,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:01:57,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:57,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 01:01:57,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:57,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:01:57,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:57,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:01:57,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:57,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-04-07 01:01:57,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:57,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:01:57,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:57,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-07 01:01:57,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:57,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:01:57,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:57,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-04-07 01:01:57,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:57,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-04-07 01:01:57,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:57,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-04-07 01:01:57,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:57,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-07 01:01:57,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:57,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:01:57,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:57,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-07 01:01:57,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:57,632 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-07 01:01:57,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:01:57,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485245589] [2022-04-07 01:01:57,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485245589] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:01:57,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:01:57,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-07 01:01:57,633 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:01:57,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1522313339] [2022-04-07 01:01:57,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1522313339] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:01:57,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:01:57,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-07 01:01:57,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467780715] [2022-04-07 01:01:57,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:01:57,634 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-07 01:01:57,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:01:57,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-07 01:01:57,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-04-07 01:01:57,634 INFO L87 Difference]: Start difference. First operand 331 states and 387 transitions. Second operand has 14 states, 14 states have (on average 5.642857142857143) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (18), 10 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2022-04-07 01:01:59,717 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:02:02,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:02:02,049 INFO L93 Difference]: Finished difference Result 419 states and 493 transitions. [2022-04-07 01:02:02,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-07 01:02:02,049 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.642857142857143) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (18), 10 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 111 [2022-04-07 01:02:02,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:02:02,051 INFO L225 Difference]: With dead ends: 419 [2022-04-07 01:02:02,051 INFO L226 Difference]: Without dead ends: 390 [2022-04-07 01:02:02,051 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2022-04-07 01:02:02,052 INFO L913 BasicCegarLoop]: 149 mSDtfsCounter, 211 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 1017 mSolverCounterSat, 99 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 1117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1017 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-04-07 01:02:02,052 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 499 Invalid, 1117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1017 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2022-04-07 01:02:02,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2022-04-07 01:02:02,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 341. [2022-04-07 01:02:02,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 266 states have (on average 1.2067669172932332) internal successors, (321), 270 states have internal predecessors, (321), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-04-07 01:02:02,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 397 transitions. [2022-04-07 01:02:02,159 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 397 transitions. Word has length 111 [2022-04-07 01:02:02,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:02:02,159 INFO L478 AbstractCegarLoop]: Abstraction has 341 states and 397 transitions. [2022-04-07 01:02:02,159 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.642857142857143) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (18), 10 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2022-04-07 01:02:02,159 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 397 transitions. [2022-04-07 01:02:02,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-04-07 01:02:02,160 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:02:02,160 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:02:02,160 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-04-07 01:02:02,160 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:02:02,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:02:02,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1354550086, now seen corresponding path program 1 times [2022-04-07 01:02:02,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:02:02,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1963144675] [2022-04-07 01:02:02,162 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:02:02,162 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:02:02,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1354550086, now seen corresponding path program 2 times [2022-04-07 01:02:02,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:02:02,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663515085] [2022-04-07 01:02:02,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:02:02,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:02:02,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:02,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:02:02,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:02,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 01:02:02,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:02,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:02:02,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:02,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:02:02,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:02,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-04-07 01:02:02,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:02,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:02:02,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:02,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-07 01:02:02,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:02,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:02:02,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:02,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-04-07 01:02:02,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:02,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-04-07 01:02:02,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:02,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-04-07 01:02:02,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:02,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-07 01:02:02,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:02,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:02:02,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:02,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-07 01:02:02,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:02,632 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-07 01:02:02,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:02:02,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663515085] [2022-04-07 01:02:02,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663515085] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:02:02,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:02:02,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-07 01:02:02,633 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:02:02,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1963144675] [2022-04-07 01:02:02,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1963144675] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:02:02,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:02:02,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-07 01:02:02,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210329179] [2022-04-07 01:02:02,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:02:02,633 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-07 01:02:02,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:02:02,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-07 01:02:02,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-04-07 01:02:02,634 INFO L87 Difference]: Start difference. First operand 341 states and 397 transitions. Second operand has 14 states, 14 states have (on average 5.714285714285714) internal successors, (80), 6 states have internal predecessors, (80), 4 states have call successors, (18), 12 states have call predecessors, (18), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-04-07 01:02:04,763 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:02:06,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:02:06,358 INFO L93 Difference]: Finished difference Result 420 states and 488 transitions. [2022-04-07 01:02:06,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-04-07 01:02:06,358 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.714285714285714) internal successors, (80), 6 states have internal predecessors, (80), 4 states have call successors, (18), 12 states have call predecessors, (18), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 112 [2022-04-07 01:02:06,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:02:06,360 INFO L225 Difference]: With dead ends: 420 [2022-04-07 01:02:06,360 INFO L226 Difference]: Without dead ends: 373 [2022-04-07 01:02:06,360 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=258, Invalid=672, Unknown=0, NotChecked=0, Total=930 [2022-04-07 01:02:06,361 INFO L913 BasicCegarLoop]: 130 mSDtfsCounter, 770 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 323 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 323 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-04-07 01:02:06,361 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [775 Valid, 284 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [323 Valid, 427 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2022-04-07 01:02:06,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2022-04-07 01:02:06,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 335. [2022-04-07 01:02:06,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 260 states have (on average 1.1807692307692308) internal successors, (307), 264 states have internal predecessors, (307), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-04-07 01:02:06,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 383 transitions. [2022-04-07 01:02:06,490 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 383 transitions. Word has length 112 [2022-04-07 01:02:06,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:02:06,490 INFO L478 AbstractCegarLoop]: Abstraction has 335 states and 383 transitions. [2022-04-07 01:02:06,490 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.714285714285714) internal successors, (80), 6 states have internal predecessors, (80), 4 states have call successors, (18), 12 states have call predecessors, (18), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-04-07 01:02:06,490 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 383 transitions. [2022-04-07 01:02:06,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-04-07 01:02:06,491 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:02:06,491 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:02:06,492 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-04-07 01:02:06,492 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:02:06,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:02:06,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1326365972, now seen corresponding path program 1 times [2022-04-07 01:02:06,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:02:06,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1578129723] [2022-04-07 01:02:06,493 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:02:06,493 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:02:06,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1326365972, now seen corresponding path program 2 times [2022-04-07 01:02:06,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:02:06,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370597748] [2022-04-07 01:02:06,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:02:06,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:02:06,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:06,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:02:06,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:06,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 01:02:06,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:06,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:02:06,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:06,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:02:06,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:06,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-04-07 01:02:06,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:06,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:02:06,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:06,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-07 01:02:06,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:06,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:02:06,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:06,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-04-07 01:02:06,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:06,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-04-07 01:02:06,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:06,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-04-07 01:02:06,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:06,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-07 01:02:06,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:06,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:02:06,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:06,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-07 01:02:06,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:06,988 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-07 01:02:06,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:02:06,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370597748] [2022-04-07 01:02:06,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370597748] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:02:06,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:02:06,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-07 01:02:06,989 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:02:06,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1578129723] [2022-04-07 01:02:06,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1578129723] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:02:06,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:02:06,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-07 01:02:06,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782808612] [2022-04-07 01:02:06,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:02:06,989 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-07 01:02:06,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:02:06,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-07 01:02:06,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-04-07 01:02:06,990 INFO L87 Difference]: Start difference. First operand 335 states and 383 transitions. Second operand has 14 states, 14 states have (on average 5.714285714285714) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (18), 10 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2022-04-07 01:02:09,073 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:02:12,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:02:12,388 INFO L93 Difference]: Finished difference Result 433 states and 499 transitions. [2022-04-07 01:02:12,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-07 01:02:12,388 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.714285714285714) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (18), 10 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 112 [2022-04-07 01:02:12,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:02:12,390 INFO L225 Difference]: With dead ends: 433 [2022-04-07 01:02:12,390 INFO L226 Difference]: Without dead ends: 364 [2022-04-07 01:02:12,390 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2022-04-07 01:02:12,390 INFO L913 BasicCegarLoop]: 149 mSDtfsCounter, 199 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 106 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-04-07 01:02:12,391 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 499 Invalid, 998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 891 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2022-04-07 01:02:12,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2022-04-07 01:02:12,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 325. [2022-04-07 01:02:12,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 252 states have (on average 1.1626984126984128) internal successors, (293), 256 states have internal predecessors, (293), 36 states have call successors, (36), 34 states have call predecessors, (36), 36 states have return successors, (38), 34 states have call predecessors, (38), 32 states have call successors, (38) [2022-04-07 01:02:12,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 367 transitions. [2022-04-07 01:02:12,567 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 367 transitions. Word has length 112 [2022-04-07 01:02:12,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:02:12,567 INFO L478 AbstractCegarLoop]: Abstraction has 325 states and 367 transitions. [2022-04-07 01:02:12,567 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.714285714285714) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (18), 10 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2022-04-07 01:02:12,567 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 367 transitions. [2022-04-07 01:02:12,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-04-07 01:02:12,568 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:02:12,568 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:02:12,568 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-04-07 01:02:12,569 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:02:12,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:02:12,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1216825272, now seen corresponding path program 1 times [2022-04-07 01:02:12,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:02:12,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1305556194] [2022-04-07 01:02:12,570 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:02:12,570 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:02:12,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1216825272, now seen corresponding path program 2 times [2022-04-07 01:02:12,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:02:12,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022195616] [2022-04-07 01:02:12,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:02:12,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:02:12,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:12,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:02:12,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:12,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 01:02:12,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:12,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:02:12,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:12,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:02:12,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:12,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-04-07 01:02:12,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:12,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:02:12,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:12,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-07 01:02:12,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:12,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:02:12,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:12,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-04-07 01:02:12,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:12,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-04-07 01:02:12,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:12,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-04-07 01:02:12,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:12,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-07 01:02:12,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:12,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:02:12,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:12,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-07 01:02:12,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:12,943 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-07 01:02:12,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:02:12,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022195616] [2022-04-07 01:02:12,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022195616] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:02:12,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:02:12,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-07 01:02:12,944 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:02:12,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1305556194] [2022-04-07 01:02:12,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1305556194] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:02:12,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:02:12,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-07 01:02:12,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076320778] [2022-04-07 01:02:12,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:02:12,945 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-07 01:02:12,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:02:12,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-07 01:02:12,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-04-07 01:02:12,945 INFO L87 Difference]: Start difference. First operand 325 states and 367 transitions. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (18), 11 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-04-07 01:02:15,009 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 [] [2022-04-07 01:02:16,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:02:16,213 INFO L93 Difference]: Finished difference Result 446 states and 505 transitions. [2022-04-07 01:02:16,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-07 01:02:16,213 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (18), 11 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 112 [2022-04-07 01:02:16,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:02:16,215 INFO L225 Difference]: With dead ends: 446 [2022-04-07 01:02:16,215 INFO L226 Difference]: Without dead ends: 380 [2022-04-07 01:02:16,215 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2022-04-07 01:02:16,216 INFO L913 BasicCegarLoop]: 137 mSDtfsCounter, 403 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 209 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-04-07 01:02:16,216 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [406 Valid, 270 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 265 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2022-04-07 01:02:16,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2022-04-07 01:02:16,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 342. [2022-04-07 01:02:16,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 266 states have (on average 1.1428571428571428) internal successors, (304), 270 states have internal predecessors, (304), 36 states have call successors, (36), 35 states have call predecessors, (36), 39 states have return successors, (41), 36 states have call predecessors, (41), 33 states have call successors, (41) [2022-04-07 01:02:16,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 381 transitions. [2022-04-07 01:02:16,358 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 381 transitions. Word has length 112 [2022-04-07 01:02:16,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:02:16,358 INFO L478 AbstractCegarLoop]: Abstraction has 342 states and 381 transitions. [2022-04-07 01:02:16,358 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (18), 11 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-04-07 01:02:16,358 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 381 transitions. [2022-04-07 01:02:16,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-04-07 01:02:16,359 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:02:16,359 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:02:16,360 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-04-07 01:02:16,360 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:02:16,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:02:16,360 INFO L85 PathProgramCache]: Analyzing trace with hash 542965401, now seen corresponding path program 1 times [2022-04-07 01:02:16,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:02:16,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1702184743] [2022-04-07 01:02:16,361 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:02:16,361 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:02:16,361 INFO L85 PathProgramCache]: Analyzing trace with hash 542965401, now seen corresponding path program 2 times [2022-04-07 01:02:16,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:02:16,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998917155] [2022-04-07 01:02:16,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:02:16,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:02:16,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:16,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:02:16,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:16,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 01:02:16,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:16,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:02:16,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:16,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:02:16,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:16,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-04-07 01:02:16,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:16,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:02:16,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:16,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-07 01:02:16,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:16,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:02:16,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:16,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-04-07 01:02:16,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:16,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-04-07 01:02:16,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:16,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-04-07 01:02:16,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:16,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-07 01:02:16,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:16,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:02:16,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:16,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-07 01:02:16,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:16,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-04-07 01:02:16,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:16,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-07 01:02:16,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:02:16,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998917155] [2022-04-07 01:02:16,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998917155] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:02:16,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920685346] [2022-04-07 01:02:16,999 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:02:16,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:02:17,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:02:17,004 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) [2022-04-07 01:02:17,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-07 01:02:18,272 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:02:18,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:02:18,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-07 01:02:18,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:02:18,506 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-07 01:02:18,506 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:02:18,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920685346] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:02:18,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:02:18,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 16 [2022-04-07 01:02:18,507 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:02:18,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1702184743] [2022-04-07 01:02:18,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1702184743] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:02:18,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:02:18,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-07 01:02:18,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648779977] [2022-04-07 01:02:18,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:02:18,507 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-07 01:02:18,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:02:18,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-07 01:02:18,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-04-07 01:02:18,508 INFO L87 Difference]: Start difference. First operand 342 states and 381 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-04-07 01:02:19,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:02:19,240 INFO L93 Difference]: Finished difference Result 382 states and 425 transitions. [2022-04-07 01:02:19,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-07 01:02:19,241 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 122 [2022-04-07 01:02:19,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:02:19,242 INFO L225 Difference]: With dead ends: 382 [2022-04-07 01:02:19,242 INFO L226 Difference]: Without dead ends: 317 [2022-04-07 01:02:19,243 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2022-04-07 01:02:19,243 INFO L913 BasicCegarLoop]: 159 mSDtfsCounter, 71 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-07 01:02:19,243 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 308 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-07 01:02:19,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2022-04-07 01:02:19,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 295. [2022-04-07 01:02:19,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 227 states have (on average 1.118942731277533) internal successors, (254), 229 states have internal predecessors, (254), 33 states have call successors, (33), 33 states have call predecessors, (33), 34 states have return successors, (35), 32 states have call predecessors, (35), 31 states have call successors, (35) [2022-04-07 01:02:19,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 322 transitions. [2022-04-07 01:02:19,344 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 322 transitions. Word has length 122 [2022-04-07 01:02:19,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:02:19,344 INFO L478 AbstractCegarLoop]: Abstraction has 295 states and 322 transitions. [2022-04-07 01:02:19,344 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-04-07 01:02:19,344 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 322 transitions. [2022-04-07 01:02:19,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-04-07 01:02:19,345 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:02:19,345 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:02:19,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-04-07 01:02:19,545 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-04-07 01:02:19,545 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:02:19,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:02:19,546 INFO L85 PathProgramCache]: Analyzing trace with hash -2117844311, now seen corresponding path program 1 times [2022-04-07 01:02:19,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:02:19,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [47048001] [2022-04-07 01:02:19,547 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:02:19,547 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:02:19,547 INFO L85 PathProgramCache]: Analyzing trace with hash -2117844311, now seen corresponding path program 2 times [2022-04-07 01:02:19,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:02:19,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651752945] [2022-04-07 01:02:19,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:02:19,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:02:19,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:19,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:02:19,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:19,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 01:02:19,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:19,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:02:19,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:19,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:02:19,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:19,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-04-07 01:02:19,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:19,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:02:19,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:19,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-07 01:02:19,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:19,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:02:19,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:19,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-04-07 01:02:19,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:19,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-04-07 01:02:19,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:19,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 01:02:19,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:19,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-07 01:02:19,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:20,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-07 01:02:20,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:20,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:02:20,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:20,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-07 01:02:20,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:20,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-04-07 01:02:20,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:20,077 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-07 01:02:20,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:02:20,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651752945] [2022-04-07 01:02:20,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651752945] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:02:20,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:02:20,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-04-07 01:02:20,077 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:02:20,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [47048001] [2022-04-07 01:02:20,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [47048001] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:02:20,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:02:20,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-04-07 01:02:20,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990709625] [2022-04-07 01:02:20,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:02:20,078 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-04-07 01:02:20,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:02:20,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-04-07 01:02:20,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2022-04-07 01:02:20,079 INFO L87 Difference]: Start difference. First operand 295 states and 322 transitions. Second operand has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 7 states have internal predecessors, (94), 3 states have call successors, (18), 11 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 2 states have call successors, (16) [2022-04-07 01:02:22,175 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:02:26,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:02:26,414 INFO L93 Difference]: Finished difference Result 339 states and 373 transitions. [2022-04-07 01:02:26,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-04-07 01:02:26,414 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 7 states have internal predecessors, (94), 3 states have call successors, (18), 11 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 2 states have call successors, (16) Word has length 128 [2022-04-07 01:02:26,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:02:26,415 INFO L225 Difference]: With dead ends: 339 [2022-04-07 01:02:26,416 INFO L226 Difference]: Without dead ends: 297 [2022-04-07 01:02:26,416 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=137, Invalid=675, Unknown=0, NotChecked=0, Total=812 [2022-04-07 01:02:26,416 INFO L913 BasicCegarLoop]: 145 mSDtfsCounter, 201 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 1264 mSolverCounterSat, 106 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 1371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1264 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-04-07 01:02:26,416 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 688 Invalid, 1371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1264 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2022-04-07 01:02:26,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-04-07 01:02:26,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 277. [2022-04-07 01:02:26,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 211 states have (on average 1.1184834123222749) internal successors, (236), 213 states have internal predecessors, (236), 33 states have call successors, (33), 33 states have call predecessors, (33), 32 states have return successors, (33), 30 states have call predecessors, (33), 31 states have call successors, (33) [2022-04-07 01:02:26,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 302 transitions. [2022-04-07 01:02:26,586 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 302 transitions. Word has length 128 [2022-04-07 01:02:26,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:02:26,587 INFO L478 AbstractCegarLoop]: Abstraction has 277 states and 302 transitions. [2022-04-07 01:02:26,587 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 7 states have internal predecessors, (94), 3 states have call successors, (18), 11 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 2 states have call successors, (16) [2022-04-07 01:02:26,587 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 302 transitions. [2022-04-07 01:02:26,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-04-07 01:02:26,588 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:02:26,588 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:02:26,588 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-04-07 01:02:26,588 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:02:26,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:02:26,588 INFO L85 PathProgramCache]: Analyzing trace with hash -809519051, now seen corresponding path program 1 times [2022-04-07 01:02:26,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:02:26,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [203749465] [2022-04-07 01:02:26,589 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:02:26,589 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:02:26,590 INFO L85 PathProgramCache]: Analyzing trace with hash -809519051, now seen corresponding path program 2 times [2022-04-07 01:02:26,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:02:26,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687597702] [2022-04-07 01:02:26,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:02:26,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:02:26,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:26,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:02:26,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:26,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 01:02:26,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:26,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:02:26,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:26,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:02:26,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:26,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-04-07 01:02:26,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:26,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:02:26,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:26,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-07 01:02:26,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:26,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:02:26,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:26,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-04-07 01:02:26,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:26,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-04-07 01:02:26,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:26,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 01:02:26,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:27,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-07 01:02:27,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:27,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-07 01:02:27,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:27,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:02:27,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:27,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-07 01:02:27,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:27,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-04-07 01:02:27,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:27,073 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-07 01:02:27,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:02:27,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687597702] [2022-04-07 01:02:27,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687597702] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:02:27,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:02:27,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-04-07 01:02:27,074 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:02:27,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [203749465] [2022-04-07 01:02:27,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [203749465] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:02:27,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:02:27,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-04-07 01:02:27,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798122663] [2022-04-07 01:02:27,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:02:27,075 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-07 01:02:27,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:02:27,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-07 01:02:27,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-04-07 01:02:27,076 INFO L87 Difference]: Start difference. First operand 277 states and 302 transitions. Second operand has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (18), 11 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-04-07 01:02:29,162 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:02:33,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:02:33,092 INFO L93 Difference]: Finished difference Result 317 states and 348 transitions. [2022-04-07 01:02:33,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-07 01:02:33,093 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (18), 11 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 128 [2022-04-07 01:02:33,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:02:33,094 INFO L225 Difference]: With dead ends: 317 [2022-04-07 01:02:33,094 INFO L226 Difference]: Without dead ends: 297 [2022-04-07 01:02:33,094 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2022-04-07 01:02:33,094 INFO L913 BasicCegarLoop]: 133 mSDtfsCounter, 214 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 118 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-04-07 01:02:33,095 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 405 Invalid, 882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 763 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2022-04-07 01:02:33,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-04-07 01:02:33,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 275. [2022-04-07 01:02:33,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 209 states have (on average 1.1100478468899522) internal successors, (232), 211 states have internal predecessors, (232), 33 states have call successors, (33), 33 states have call predecessors, (33), 32 states have return successors, (33), 30 states have call predecessors, (33), 31 states have call successors, (33) [2022-04-07 01:02:33,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 298 transitions. [2022-04-07 01:02:33,189 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 298 transitions. Word has length 128 [2022-04-07 01:02:33,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:02:33,189 INFO L478 AbstractCegarLoop]: Abstraction has 275 states and 298 transitions. [2022-04-07 01:02:33,189 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (18), 11 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-04-07 01:02:33,189 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 298 transitions. [2022-04-07 01:02:33,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-04-07 01:02:33,190 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:02:33,190 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:02:33,191 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-04-07 01:02:33,191 INFO L403 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:02:33,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:02:33,191 INFO L85 PathProgramCache]: Analyzing trace with hash -792455600, now seen corresponding path program 1 times [2022-04-07 01:02:33,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:02:33,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [495864979] [2022-04-07 01:02:33,192 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:02:33,192 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:02:33,192 INFO L85 PathProgramCache]: Analyzing trace with hash -792455600, now seen corresponding path program 2 times [2022-04-07 01:02:33,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:02:33,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691241636] [2022-04-07 01:02:33,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:02:33,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:02:33,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:33,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:02:33,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:33,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 01:02:33,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:33,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:02:33,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:33,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:02:33,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:33,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-04-07 01:02:33,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:33,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:02:33,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:33,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-07 01:02:33,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:33,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:02:33,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:33,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-04-07 01:02:33,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:33,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-04-07 01:02:33,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:33,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 01:02:33,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:33,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-07 01:02:33,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:33,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-07 01:02:33,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:33,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:02:33,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:33,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-07 01:02:33,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:33,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-04-07 01:02:33,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:33,718 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-07 01:02:33,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:02:33,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691241636] [2022-04-07 01:02:33,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691241636] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:02:33,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:02:33,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-04-07 01:02:33,719 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:02:33,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [495864979] [2022-04-07 01:02:33,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [495864979] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:02:33,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:02:33,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-04-07 01:02:33,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038150636] [2022-04-07 01:02:33,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:02:33,720 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-04-07 01:02:33,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:02:33,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-04-07 01:02:33,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2022-04-07 01:02:33,720 INFO L87 Difference]: Start difference. First operand 275 states and 298 transitions. Second operand has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 6 states have internal predecessors, (95), 2 states have call successors, (18), 11 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 2 states have call successors, (16) [2022-04-07 01:02:35,805 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:02:38,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:02:38,946 INFO L93 Difference]: Finished difference Result 317 states and 344 transitions. [2022-04-07 01:02:38,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-07 01:02:38,946 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 6 states have internal predecessors, (95), 2 states have call successors, (18), 11 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 2 states have call successors, (16) Word has length 129 [2022-04-07 01:02:38,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:02:38,947 INFO L225 Difference]: With dead ends: 317 [2022-04-07 01:02:38,947 INFO L226 Difference]: Without dead ends: 247 [2022-04-07 01:02:38,948 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2022-04-07 01:02:38,948 INFO L913 BasicCegarLoop]: 125 mSDtfsCounter, 157 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 98 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 1206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-04-07 01:02:38,948 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 540 Invalid, 1206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1107 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2022-04-07 01:02:38,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2022-04-07 01:02:39,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 237. [2022-04-07 01:02:39,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 177 states have (on average 1.0847457627118644) internal successors, (192), 177 states have internal predecessors, (192), 31 states have call successors, (31), 31 states have call predecessors, (31), 28 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2022-04-07 01:02:39,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 252 transitions. [2022-04-07 01:02:39,032 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 252 transitions. Word has length 129 [2022-04-07 01:02:39,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:02:39,032 INFO L478 AbstractCegarLoop]: Abstraction has 237 states and 252 transitions. [2022-04-07 01:02:39,032 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 6 states have internal predecessors, (95), 2 states have call successors, (18), 11 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 2 states have call successors, (16) [2022-04-07 01:02:39,033 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 252 transitions. [2022-04-07 01:02:39,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-04-07 01:02:39,033 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:02:39,033 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:02:39,034 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-04-07 01:02:39,034 INFO L403 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:02:39,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:02:39,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1183185629, now seen corresponding path program 1 times [2022-04-07 01:02:39,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:02:39,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [890859890] [2022-04-07 01:02:39,035 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:02:39,035 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:02:39,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1183185629, now seen corresponding path program 2 times [2022-04-07 01:02:39,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:02:39,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715865279] [2022-04-07 01:02:39,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:02:39,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:02:39,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:39,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:02:39,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:39,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 01:02:39,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:39,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:02:39,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:39,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:02:39,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:39,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-04-07 01:02:39,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:39,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:02:39,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:39,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-07 01:02:39,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:39,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:02:39,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:39,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-04-07 01:02:39,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:39,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-04-07 01:02:39,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:39,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 01:02:39,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:39,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-07 01:02:39,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:39,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-07 01:02:39,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:39,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:02:39,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:39,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-07 01:02:39,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:39,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-04-07 01:02:39,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:39,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-04-07 01:02:39,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:39,772 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-07 01:02:39,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:02:39,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715865279] [2022-04-07 01:02:39,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715865279] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:02:39,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31767465] [2022-04-07 01:02:39,773 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:02:39,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:02:39,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:02:39,776 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) [2022-04-07 01:02:39,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process