/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/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/ntdrivers/kbfiltr.i.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05ce600 [2022-02-24 02:08:09,249 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-24 02:08:09,251 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-24 02:08:09,287 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-24 02:08:09,293 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-24 02:08:09,294 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-24 02:08:09,294 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-24 02:08:09,295 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-24 02:08:09,295 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-24 02:08:09,296 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-24 02:08:09,297 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-24 02:08:09,298 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-24 02:08:09,299 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-24 02:08:09,300 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-24 02:08:09,300 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-24 02:08:09,301 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-24 02:08:09,303 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-24 02:08:09,307 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-24 02:08:09,307 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-24 02:08:09,308 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-24 02:08:09,308 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-02-24 02:08:09,314 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-24 02:08:09,314 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-24 02:08:09,315 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-24 02:08:09,315 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-24 02:08:09,315 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-24 02:08:09,315 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-24 02:08:09,315 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-24 02:08:09,315 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-24 02:08:09,316 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-24 02:08:09,316 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-24 02:08:09,316 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-24 02:08:09,316 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-24 02:08:09,316 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-24 02:08:09,316 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-24 02:08:09,316 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-24 02:08:09,316 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-24 02:08:09,317 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-24 02:08:09,317 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-24 02:08:09,317 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-24 02:08:09,317 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-24 02:08:09,317 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-24 02:08:09,317 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-24 02:08:09,317 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-02-24 02:08:09,317 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-24 02:08:09,496 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-24 02:08:09,517 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-24 02:08:09,519 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-24 02:08:09,520 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-24 02:08:09,520 INFO L275 PluginConnector]: CDTParser initialized [2022-02-24 02:08:09,521 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers/kbfiltr.i.cil-2.c [2022-02-24 02:08:09,567 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0706c737b/63b11dd9cbd14ba2940140b98bb10b61/FLAG100d6a8d5 [2022-02-24 02:08:10,006 INFO L306 CDTParser]: Found 1 translation units. [2022-02-24 02:08:10,006 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/kbfiltr.i.cil-2.c [2022-02-24 02:08:10,029 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0706c737b/63b11dd9cbd14ba2940140b98bb10b61/FLAG100d6a8d5 [2022-02-24 02:08:10,327 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0706c737b/63b11dd9cbd14ba2940140b98bb10b61 [2022-02-24 02:08:10,329 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-24 02:08:10,330 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-24 02:08:10,334 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-24 02:08:10,335 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-24 02:08:10,337 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-24 02:08:10,337 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 02:08:10" (1/1) ... [2022-02-24 02:08:10,338 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44fe31fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:08:10, skipping insertion in model container [2022-02-24 02:08:10,338 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 02:08:10" (1/1) ... [2022-02-24 02:08:10,360 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-24 02:08:10,412 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-24 02:08:10,721 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] [2022-02-24 02:08:10,888 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-24 02:08:10,898 INFO L203 MainTranslator]: Completed pre-run [2022-02-24 02:08:10,937 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] [2022-02-24 02:08:11,023 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-24 02:08:11,044 INFO L208 MainTranslator]: Completed translation [2022-02-24 02:08:11,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:08:11 WrapperNode [2022-02-24 02:08:11,045 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-24 02:08:11,046 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-24 02:08:11,046 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-24 02:08:11,046 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-24 02:08:11,055 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:08:11" (1/1) ... [2022-02-24 02:08:11,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:08:11" (1/1) ... [2022-02-24 02:08:11,096 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:08:11" (1/1) ... [2022-02-24 02:08:11,097 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:08:11" (1/1) ... [2022-02-24 02:08:11,154 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:08:11" (1/1) ... [2022-02-24 02:08:11,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:08:11" (1/1) ... [2022-02-24 02:08:11,185 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:08:11" (1/1) ... [2022-02-24 02:08:11,201 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-24 02:08:11,202 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-24 02:08:11,202 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-24 02:08:11,202 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-24 02:08:11,205 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:08:11" (1/1) ... [2022-02-24 02:08:11,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-24 02:08:11,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-24 02:08:11,226 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) [2022-02-24 02:08:11,246 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 [2022-02-24 02:08:11,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-24 02:08:11,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-24 02:08:11,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~PVOID~0~X~~PVOID~0~X~$Pointer$~X~$Pointer$~X~~PBOOLEAN~0~TO~~NTSTATUS~0 [2022-02-24 02:08:11,264 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 [2022-02-24 02:08:11,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~PVOID~0~X~~PVOID~0~X~~PVOID~0~X~~PVOID~0~TO~VOID [2022-02-24 02:08:11,264 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-24 02:08:11,264 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-02-24 02:08:11,264 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedIncrement [2022-02-24 02:08:11,265 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedDecrement [2022-02-24 02:08:11,265 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_IoCtl [2022-02-24 02:08:11,266 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-02-24 02:08:11,266 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-02-24 02:08:11,266 INFO L138 BoogieDeclarations]: Found implementation of procedure DriverEntry [2022-02-24 02:08:11,266 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_AddDevice [2022-02-24 02:08:11,267 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2022-02-24 02:08:11,268 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_CreateClose [2022-02-24 02:08:11,268 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_DispatchPassThrough [2022-02-24 02:08:11,268 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_InternIoCtl [2022-02-24 02:08:11,268 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_PnP [2022-02-24 02:08:11,269 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Power [2022-02-24 02:08:11,269 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_InitializationRoutine [2022-02-24 02:08:11,269 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_IsrHook [2022-02-24 02:08:11,269 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_ServiceCallback [2022-02-24 02:08:11,269 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Unload [2022-02-24 02:08:11,269 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-02-24 02:08:11,272 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-24 02:08:11,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAcquireFastMutex [2022-02-24 02:08:11,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ExReleaseFastMutex [2022-02-24 02:08:11,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2022-02-24 02:08:11,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ExFreePool [2022-02-24 02:08:11,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertHeadList [2022-02-24 02:08:11,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertTailList [2022-02-24 02:08:11,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedRemoveHeadList [2022-02-24 02:08:11,272 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAllocateMdl [2022-02-24 02:08:11,272 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAttachDeviceToDeviceStack [2022-02-24 02:08:11,272 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildAsynchronousFsdRequest [2022-02-24 02:08:11,273 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2022-02-24 02:08:11,273 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateDevice [2022-02-24 02:08:11,273 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateSymbolicLink [2022-02-24 02:08:11,273 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteDevice [2022-02-24 02:08:11,273 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2022-02-24 02:08:11,273 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDetachDevice [2022-02-24 02:08:11,273 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeIrp [2022-02-24 02:08:11,273 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeMdl [2022-02-24 02:08:11,273 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2022-02-24 02:08:11,273 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2022-02-24 02:08:11,273 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2022-02-24 02:08:11,273 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReleaseCancelSpinLock [2022-02-24 02:08:11,273 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-02-24 02:08:11,273 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetHardErrorOrVerifyDevice [2022-02-24 02:08:11,274 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-02-24 02:08:11,274 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-02-24 02:08:11,274 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-02-24 02:08:11,274 INFO L138 BoogieDeclarations]: Found implementation of procedure KeAcquireSpinLockRaiseToDpc [2022-02-24 02:08:11,274 INFO L138 BoogieDeclarations]: Found implementation of procedure KeDelayExecutionThread [2022-02-24 02:08:11,274 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeEvent [2022-02-24 02:08:11,274 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSemaphore [2022-02-24 02:08:11,274 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSpinLock [2022-02-24 02:08:11,274 INFO L138 BoogieDeclarations]: Found implementation of procedure KeReleaseSemaphore [2022-02-24 02:08:11,274 INFO L138 BoogieDeclarations]: Found implementation of procedure KfReleaseSpinLock [2022-02-24 02:08:11,274 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-02-24 02:08:11,274 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-02-24 02:08:11,274 INFO L138 BoogieDeclarations]: Found implementation of procedure MmAllocateContiguousMemory [2022-02-24 02:08:11,275 INFO L138 BoogieDeclarations]: Found implementation of procedure MmFreeContiguousMemory [2022-02-24 02:08:11,275 INFO L138 BoogieDeclarations]: Found implementation of procedure MmMapLockedPagesSpecifyCache [2022-02-24 02:08:11,275 INFO L138 BoogieDeclarations]: Found implementation of procedure MmPageEntireDriver [2022-02-24 02:08:11,275 INFO L138 BoogieDeclarations]: Found implementation of procedure MmResetDriverPaging [2022-02-24 02:08:11,275 INFO L138 BoogieDeclarations]: Found implementation of procedure MmUnlockPages [2022-02-24 02:08:11,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2022-02-24 02:08:11,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ObfDereferenceObject [2022-02-24 02:08:11,275 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-02-24 02:08:11,275 INFO L138 BoogieDeclarations]: Found implementation of procedure PoStartNextPowerIrp [2022-02-24 02:08:11,275 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2022-02-24 02:08:11,276 INFO L138 BoogieDeclarations]: Found implementation of procedure PsTerminateSystemThread [2022-02-24 02:08:11,276 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlAnsiStringToUnicodeString [2022-02-24 02:08:11,276 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCompareMemory [2022-02-24 02:08:11,276 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCopyUnicodeString [2022-02-24 02:08:11,276 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlDeleteRegistryValue [2022-02-24 02:08:11,276 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlFreeUnicodeString [2022-02-24 02:08:11,276 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitString [2022-02-24 02:08:11,276 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitUnicodeString [2022-02-24 02:08:11,277 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlQueryRegistryValues [2022-02-24 02:08:11,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-02-24 02:08:11,277 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-02-24 02:08:11,278 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-02-24 02:08:11,278 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-24 02:08:11,278 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-24 02:08:11,278 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-24 02:08:11,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-24 02:08:11,279 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-02-24 02:08:11,279 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-24 02:08:11,279 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-02-24 02:08:11,279 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2022-02-24 02:08:11,279 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-02-24 02:08:11,279 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2022-02-24 02:08:11,279 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2022-02-24 02:08:11,279 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2022-02-24 02:08:11,279 INFO L130 BoogieDeclarations]: Found specification of procedure RtlQueryRegistryValues [2022-02-24 02:08:11,279 INFO L130 BoogieDeclarations]: Found specification of procedure RtlDeleteRegistryValue [2022-02-24 02:08:11,279 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitString [2022-02-24 02:08:11,279 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitUnicodeString [2022-02-24 02:08:11,280 INFO L130 BoogieDeclarations]: Found specification of procedure RtlAnsiStringToUnicodeString [2022-02-24 02:08:11,280 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCopyUnicodeString [2022-02-24 02:08:11,280 INFO L130 BoogieDeclarations]: Found specification of procedure RtlFreeUnicodeString [2022-02-24 02:08:11,280 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCompareMemory [2022-02-24 02:08:11,280 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedIncrement [2022-02-24 02:08:11,280 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-24 02:08:11,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-24 02:08:11,280 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedDecrement [2022-02-24 02:08:11,280 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeEvent [2022-02-24 02:08:11,280 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-02-24 02:08:11,280 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSemaphore [2022-02-24 02:08:11,281 INFO L130 BoogieDeclarations]: Found specification of procedure KeReleaseSemaphore [2022-02-24 02:08:11,281 INFO L130 BoogieDeclarations]: Found specification of procedure KeDelayExecutionThread [2022-02-24 02:08:11,281 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-02-24 02:08:11,281 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSpinLock [2022-02-24 02:08:11,281 INFO L130 BoogieDeclarations]: Found specification of procedure KfReleaseSpinLock [2022-02-24 02:08:11,282 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2022-02-24 02:08:11,282 INFO L130 BoogieDeclarations]: Found specification of procedure ExFreePool [2022-02-24 02:08:11,282 INFO L130 BoogieDeclarations]: Found specification of procedure ExAcquireFastMutex [2022-02-24 02:08:11,282 INFO L130 BoogieDeclarations]: Found specification of procedure ExReleaseFastMutex [2022-02-24 02:08:11,282 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertHeadList [2022-02-24 02:08:11,282 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertTailList [2022-02-24 02:08:11,282 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedRemoveHeadList [2022-02-24 02:08:11,282 INFO L130 BoogieDeclarations]: Found specification of procedure MmUnlockPages [2022-02-24 02:08:11,282 INFO L130 BoogieDeclarations]: Found specification of procedure MmMapLockedPagesSpecifyCache [2022-02-24 02:08:11,282 INFO L130 BoogieDeclarations]: Found specification of procedure MmAllocateContiguousMemory [2022-02-24 02:08:11,282 INFO L130 BoogieDeclarations]: Found specification of procedure MmFreeContiguousMemory [2022-02-24 02:08:11,282 INFO L130 BoogieDeclarations]: Found specification of procedure MmResetDriverPaging [2022-02-24 02:08:11,282 INFO L130 BoogieDeclarations]: Found specification of procedure MmPageEntireDriver [2022-02-24 02:08:11,283 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2022-02-24 02:08:11,283 INFO L130 BoogieDeclarations]: Found specification of procedure PsTerminateSystemThread [2022-02-24 02:08:11,283 INFO L130 BoogieDeclarations]: Found specification of procedure IoAllocateMdl [2022-02-24 02:08:11,283 INFO L130 BoogieDeclarations]: Found specification of procedure IoAttachDeviceToDeviceStack [2022-02-24 02:08:11,283 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildAsynchronousFsdRequest [2022-02-24 02:08:11,283 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2022-02-24 02:08:11,283 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-02-24 02:08:11,283 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-02-24 02:08:11,283 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateDevice [2022-02-24 02:08:11,284 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateSymbolicLink [2022-02-24 02:08:11,284 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteDevice [2022-02-24 02:08:11,286 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2022-02-24 02:08:11,287 INFO L130 BoogieDeclarations]: Found specification of procedure IoDetachDevice [2022-02-24 02:08:11,292 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeIrp [2022-02-24 02:08:11,292 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeMdl [2022-02-24 02:08:11,292 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2022-02-24 02:08:11,292 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2022-02-24 02:08:11,292 INFO L130 BoogieDeclarations]: Found specification of procedure IoReleaseCancelSpinLock [2022-02-24 02:08:11,292 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetHardErrorOrVerifyDevice [2022-02-24 02:08:11,292 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2022-02-24 02:08:11,292 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-02-24 02:08:11,292 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-02-24 02:08:11,292 INFO L130 BoogieDeclarations]: Found specification of procedure PoStartNextPowerIrp [2022-02-24 02:08:11,292 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2022-02-24 02:08:11,292 INFO L130 BoogieDeclarations]: Found specification of procedure ObfDereferenceObject [2022-02-24 02:08:11,292 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-02-24 02:08:11,292 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_AddDevice [2022-02-24 02:08:11,293 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_CreateClose [2022-02-24 02:08:11,293 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_DispatchPassThrough [2022-02-24 02:08:11,293 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_InternIoCtl [2022-02-24 02:08:11,293 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_IoCtl [2022-02-24 02:08:11,293 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_PnP [2022-02-24 02:08:11,293 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Power [2022-02-24 02:08:11,293 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_InitializationRoutine [2022-02-24 02:08:11,293 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_IsrHook [2022-02-24 02:08:11,293 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_ServiceCallback [2022-02-24 02:08:11,293 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Unload [2022-02-24 02:08:11,293 INFO L130 BoogieDeclarations]: Found specification of procedure DriverEntry [2022-02-24 02:08:11,293 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-02-24 02:08:11,293 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-02-24 02:08:11,293 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-02-24 02:08:11,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-02-24 02:08:11,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-02-24 02:08:11,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-24 02:08:11,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-24 02:08:11,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-02-24 02:08:11,293 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2022-02-24 02:08:11,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-02-24 02:08:11,294 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~PVOID~0~X~~PVOID~0~X~$Pointer$~X~$Pointer$~X~~PBOOLEAN~0~TO~~NTSTATUS~0 [2022-02-24 02:08:11,294 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 [2022-02-24 02:08:11,294 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~PVOID~0~X~~PVOID~0~X~~PVOID~0~X~~PVOID~0~TO~VOID [2022-02-24 02:08:11,294 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-02-24 02:08:11,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2022-02-24 02:08:11,294 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-24 02:08:11,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-02-24 02:08:11,294 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-02-24 02:08:11,294 INFO L130 BoogieDeclarations]: Found specification of procedure KeAcquireSpinLockRaiseToDpc [2022-02-24 02:08:11,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-24 02:08:11,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-24 02:08:11,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-24 02:08:11,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-02-24 02:08:11,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-02-24 02:08:11,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-02-24 02:08:11,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-02-24 02:08:11,650 INFO L234 CfgBuilder]: Building ICFG [2022-02-24 02:08:11,652 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-24 02:08:11,688 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:08:11,742 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:08:11,742 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:08:11,742 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:08:11,751 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:08:11,752 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:08:11,772 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:08:11,779 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:08:11,780 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:08:11,780 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:08:11,793 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:08:11,793 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:08:11,798 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:08:11,807 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:08:11,808 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:08:12,060 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:08:12,066 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:08:12,066 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:08:12,066 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:08:12,075 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:08:12,075 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:08:12,075 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:08:12,087 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:08:12,087 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:08:12,100 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:08:12,105 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:08:12,105 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:08:12,106 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:08:12,110 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:08:12,110 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:08:12,111 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:08:12,119 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:08:12,119 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:08:12,160 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:08:12,166 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:08:12,166 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:08:12,166 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:08:12,170 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:08:12,170 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:08:12,178 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:08:12,277 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2022-02-24 02:08:12,277 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2022-02-24 02:08:12,288 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:08:12,300 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-02-24 02:08:12,300 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-02-24 02:08:12,310 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:08:12,313 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:08:12,313 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:08:12,316 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:08:13,474 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-02-24 02:08:13,475 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-02-24 02:08:13,605 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:08:13,609 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:08:13,609 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:08:13,673 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:08:13,678 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:08:13,678 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:08:13,689 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:08:13,702 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-02-24 02:08:13,702 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-02-24 02:08:13,712 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:08:13,720 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-02-24 02:08:13,721 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-02-24 02:08:13,740 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:08:13,743 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:08:13,743 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:08:13,745 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:08:13,769 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2022-02-24 02:08:13,770 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2022-02-24 02:08:13,795 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:08:13,798 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:08:13,799 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:08:13,824 INFO L275 CfgBuilder]: Performing block encoding [2022-02-24 02:08:13,836 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-24 02:08:13,837 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-24 02:08:13,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 02:08:13 BoogieIcfgContainer [2022-02-24 02:08:13,840 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-24 02:08:13,842 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-24 02:08:13,842 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-24 02:08:13,845 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-24 02:08:13,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 02:08:10" (1/3) ... [2022-02-24 02:08:13,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fec2398 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 02:08:13, skipping insertion in model container [2022-02-24 02:08:13,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:08:11" (2/3) ... [2022-02-24 02:08:13,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fec2398 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 02:08:13, skipping insertion in model container [2022-02-24 02:08:13,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 02:08:13" (3/3) ... [2022-02-24 02:08:13,847 INFO L111 eAbstractionObserver]: Analyzing ICFG kbfiltr.i.cil-2.c [2022-02-24 02:08:13,850 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-24 02:08:13,850 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-24 02:08:13,883 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-24 02:08:13,888 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=JORDAN [2022-02-24 02:08:13,888 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-24 02:08:13,901 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) [2022-02-24 02:08:13,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-24 02:08:13,906 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:08:13,906 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:08:13,907 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:08:13,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:08:13,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1774662017, now seen corresponding path program 1 times [2022-02-24 02:08:13,915 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:08:13,916 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [875784668] [2022-02-24 02:08:13,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:08:13,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:08:14,007 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:08:14,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:14,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:08:14,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:14,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:08:14,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:14,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:08:14,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:14,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:08:14,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:14,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:08:14,358 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:08:14,359 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [875784668] [2022-02-24 02:08:14,361 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [875784668] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:08:14,361 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:08:14,361 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-24 02:08:14,362 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872037816] [2022-02-24 02:08:14,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:08:14,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-24 02:08:14,366 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:08:14,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-24 02:08:14,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-02-24 02:08:14,389 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) [2022-02-24 02:08:16,478 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 [] [2022-02-24 02:08:19,465 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 [] [2022-02-24 02:08:20,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:08:20,167 INFO L93 Difference]: Finished difference Result 643 states and 953 transitions. [2022-02-24 02:08:20,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-24 02:08:20,170 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 [2022-02-24 02:08:20,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:08:20,178 INFO L225 Difference]: With dead ends: 643 [2022-02-24 02:08:20,179 INFO L226 Difference]: Without dead ends: 343 [2022-02-24 02:08:20,183 INFO L932 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 [2022-02-24 02:08:20,187 INFO L933 BasicCegarLoop]: 335 mSDtfsCounter, 597 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 220 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s 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, 5.6s IncrementalHoareTripleChecker+Time [2022-02-24 02:08:20,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [602 Valid, 463 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 379 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2022-02-24 02:08:20,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-02-24 02:08:20,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 299. [2022-02-24 02:08:20,283 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) [2022-02-24 02:08:20,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 407 transitions. [2022-02-24 02:08:20,288 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 407 transitions. Word has length 31 [2022-02-24 02:08:20,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:08:20,289 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 407 transitions. [2022-02-24 02:08:20,289 INFO L471 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) [2022-02-24 02:08:20,290 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 407 transitions. [2022-02-24 02:08:20,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-24 02:08:20,291 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:08:20,291 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:08:20,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-24 02:08:20,291 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:08:20,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:08:20,294 INFO L85 PathProgramCache]: Analyzing trace with hash 186314115, now seen corresponding path program 1 times [2022-02-24 02:08:20,294 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:08:20,294 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1350755890] [2022-02-24 02:08:20,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:08:20,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:08:20,308 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:08:20,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:20,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:08:20,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:20,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:08:20,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:20,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:08:20,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:20,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:08:20,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:20,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:08:20,693 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:08:20,693 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1350755890] [2022-02-24 02:08:20,694 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1350755890] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:08:20,696 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:08:20,696 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-24 02:08:20,697 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836660978] [2022-02-24 02:08:20,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:08:20,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-24 02:08:20,698 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:08:20,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-24 02:08:20,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-02-24 02:08:20,699 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) [2022-02-24 02:08:23,582 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 [] [2022-02-24 02:08:25,222 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:08:27,237 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:08:29,257 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:08:31,268 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:08:33,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:08:33,375 INFO L93 Difference]: Finished difference Result 360 states and 492 transitions. [2022-02-24 02:08:33,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-24 02:08:33,375 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 [2022-02-24 02:08:33,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:08:33,378 INFO L225 Difference]: With dead ends: 360 [2022-02-24 02:08:33,378 INFO L226 Difference]: Without dead ends: 343 [2022-02-24 02:08:33,379 INFO L932 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 [2022-02-24 02:08:33,380 INFO L933 BasicCegarLoop]: 314 mSDtfsCounter, 395 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 1533 mSolverCounterSat, 149 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 1686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 1533 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2022-02-24 02:08:33,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [401 Valid, 683 Invalid, 1686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 1533 Invalid, 4 Unknown, 0 Unchecked, 12.5s Time] [2022-02-24 02:08:33,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-02-24 02:08:33,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 299. [2022-02-24 02:08:33,404 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) [2022-02-24 02:08:33,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 406 transitions. [2022-02-24 02:08:33,405 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 406 transitions. Word has length 31 [2022-02-24 02:08:33,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:08:33,406 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 406 transitions. [2022-02-24 02:08:33,406 INFO L471 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) [2022-02-24 02:08:33,406 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 406 transitions. [2022-02-24 02:08:33,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-02-24 02:08:33,407 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:08:33,407 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:08:33,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-24 02:08:33,408 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:08:33,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:08:33,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1201516382, now seen corresponding path program 1 times [2022-02-24 02:08:33,409 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:08:33,409 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [288419203] [2022-02-24 02:08:33,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:08:33,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:08:33,416 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:08:33,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:33,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:08:33,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:33,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:08:33,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:33,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:08:33,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:33,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:08:33,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:33,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 02:08:33,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:33,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:08:33,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:33,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-24 02:08:33,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:33,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:08:33,731 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:08:33,731 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [288419203] [2022-02-24 02:08:33,732 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [288419203] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:08:33,732 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:08:33,732 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-24 02:08:33,732 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002875154] [2022-02-24 02:08:33,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:08:33,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-24 02:08:33,733 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:08:33,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-24 02:08:33,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-02-24 02:08:33,734 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) [2022-02-24 02:08:35,797 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:08:38,265 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:08:39,416 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:08:41,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:08:41,248 INFO L93 Difference]: Finished difference Result 599 states and 829 transitions. [2022-02-24 02:08:41,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-24 02:08:41,248 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 [2022-02-24 02:08:41,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:08:41,251 INFO L225 Difference]: With dead ends: 599 [2022-02-24 02:08:41,251 INFO L226 Difference]: Without dead ends: 348 [2022-02-24 02:08:41,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2022-02-24 02:08:41,252 INFO L933 BasicCegarLoop]: 312 mSDtfsCounter, 609 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 1671 mSolverCounterSat, 252 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 1924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 1671 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-02-24 02:08:41,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [612 Valid, 792 Invalid, 1924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 1671 Invalid, 1 Unknown, 0 Unchecked, 7.2s Time] [2022-02-24 02:08:41,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2022-02-24 02:08:41,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 303. [2022-02-24 02:08:41,284 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) [2022-02-24 02:08:41,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 410 transitions. [2022-02-24 02:08:41,285 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 410 transitions. Word has length 53 [2022-02-24 02:08:41,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:08:41,286 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 410 transitions. [2022-02-24 02:08:41,286 INFO L471 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) [2022-02-24 02:08:41,286 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 410 transitions. [2022-02-24 02:08:41,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-02-24 02:08:41,292 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:08:41,292 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:08:41,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-24 02:08:41,293 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:08:41,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:08:41,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1078281185, now seen corresponding path program 1 times [2022-02-24 02:08:41,293 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:08:41,293 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [735954775] [2022-02-24 02:08:41,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:08:41,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:08:41,310 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:08:41,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:41,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:08:41,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:41,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:08:41,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:41,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:08:41,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:41,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:08:41,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:41,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 02:08:41,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:41,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:08:41,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:41,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-24 02:08:41,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:41,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:08:41,620 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:08:41,620 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [735954775] [2022-02-24 02:08:41,620 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [735954775] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:08:41,620 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:08:41,620 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-24 02:08:41,620 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005857112] [2022-02-24 02:08:41,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:08:41,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-24 02:08:41,624 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:08:41,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-24 02:08:41,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-02-24 02:08:41,624 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) [2022-02-24 02:08:43,745 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:08:45,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:08:45,838 INFO L93 Difference]: Finished difference Result 492 states and 667 transitions. [2022-02-24 02:08:45,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-24 02:08:45,839 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 [2022-02-24 02:08:45,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:08:45,842 INFO L225 Difference]: With dead ends: 492 [2022-02-24 02:08:45,842 INFO L226 Difference]: Without dead ends: 431 [2022-02-24 02:08:45,842 INFO L932 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 [2022-02-24 02:08:45,843 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 864 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 299 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s 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, 3.9s IncrementalHoareTripleChecker+Time [2022-02-24 02:08:45,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [869 Valid, 612 Invalid, 1103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 803 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2022-02-24 02:08:45,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2022-02-24 02:08:45,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 374. [2022-02-24 02:08:45,882 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) [2022-02-24 02:08:45,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 498 transitions. [2022-02-24 02:08:45,885 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 498 transitions. Word has length 53 [2022-02-24 02:08:45,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:08:45,887 INFO L470 AbstractCegarLoop]: Abstraction has 374 states and 498 transitions. [2022-02-24 02:08:45,887 INFO L471 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) [2022-02-24 02:08:45,887 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 498 transitions. [2022-02-24 02:08:45,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-02-24 02:08:45,888 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:08:45,888 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:08:45,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-24 02:08:45,888 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:08:45,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:08:45,889 INFO L85 PathProgramCache]: Analyzing trace with hash 17478568, now seen corresponding path program 1 times [2022-02-24 02:08:45,889 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:08:45,889 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [69328277] [2022-02-24 02:08:45,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:08:45,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:08:45,898 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:08:45,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:46,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:08:46,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:46,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:08:46,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:46,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:08:46,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:46,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:08:46,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:46,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 02:08:46,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:46,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:08:46,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:46,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-24 02:08:46,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:46,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-02-24 02:08:46,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:46,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:08:46,144 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:08:46,145 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [69328277] [2022-02-24 02:08:46,160 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [69328277] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:08:46,160 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:08:46,160 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-24 02:08:46,160 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801689338] [2022-02-24 02:08:46,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:08:46,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-24 02:08:46,161 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:08:46,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-24 02:08:46,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-02-24 02:08:46,162 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) [2022-02-24 02:08:48,274 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:08:49,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:08:49,952 INFO L93 Difference]: Finished difference Result 569 states and 751 transitions. [2022-02-24 02:08:49,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-24 02:08:49,952 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 [2022-02-24 02:08:49,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:08:49,956 INFO L225 Difference]: With dead ends: 569 [2022-02-24 02:08:49,956 INFO L226 Difference]: Without dead ends: 450 [2022-02-24 02:08:49,957 INFO L932 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 [2022-02-24 02:08:49,959 INFO L933 BasicCegarLoop]: 320 mSDtfsCounter, 974 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 330 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s 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, 3.5s IncrementalHoareTripleChecker+Time [2022-02-24 02:08:49,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [986 Valid, 489 Invalid, 981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 650 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2022-02-24 02:08:49,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-02-24 02:08:50,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 410. [2022-02-24 02:08:50,004 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) [2022-02-24 02:08:50,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 545 transitions. [2022-02-24 02:08:50,007 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 545 transitions. Word has length 60 [2022-02-24 02:08:50,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:08:50,007 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 545 transitions. [2022-02-24 02:08:50,007 INFO L471 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) [2022-02-24 02:08:50,007 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 545 transitions. [2022-02-24 02:08:50,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-02-24 02:08:50,009 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:08:50,009 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:08:50,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-24 02:08:50,009 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:08:50,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:08:50,010 INFO L85 PathProgramCache]: Analyzing trace with hash -110356200, now seen corresponding path program 1 times [2022-02-24 02:08:50,010 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:08:50,010 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100296143] [2022-02-24 02:08:50,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:08:50,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:08:50,017 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:08:50,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:50,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:08:50,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:50,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:08:50,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:50,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:08:50,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:50,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:08:50,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:50,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 02:08:50,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:50,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:08:50,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:50,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-24 02:08:50,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:50,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-02-24 02:08:50,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:50,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:08:50,363 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:08:50,363 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100296143] [2022-02-24 02:08:50,363 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [100296143] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:08:50,363 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:08:50,363 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-24 02:08:50,364 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679339111] [2022-02-24 02:08:50,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:08:50,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-24 02:08:50,365 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:08:50,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-24 02:08:50,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-02-24 02:08:50,365 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) [2022-02-24 02:08:52,506 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:08:54,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:08:54,310 INFO L93 Difference]: Finished difference Result 450 states and 594 transitions. [2022-02-24 02:08:54,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-24 02:08:54,310 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 [2022-02-24 02:08:54,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:08:54,313 INFO L225 Difference]: With dead ends: 450 [2022-02-24 02:08:54,313 INFO L226 Difference]: Without dead ends: 442 [2022-02-24 02:08:54,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2022-02-24 02:08:54,314 INFO L933 BasicCegarLoop]: 332 mSDtfsCounter, 1505 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 517 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s 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, 3.3s IncrementalHoareTripleChecker+Time [2022-02-24 02:08:54,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1514 Valid, 539 Invalid, 1262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [517 Valid, 744 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2022-02-24 02:08:54,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2022-02-24 02:08:54,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 415. [2022-02-24 02:08:54,374 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) [2022-02-24 02:08:54,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 551 transitions. [2022-02-24 02:08:54,376 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 551 transitions. Word has length 60 [2022-02-24 02:08:54,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:08:54,376 INFO L470 AbstractCegarLoop]: Abstraction has 415 states and 551 transitions. [2022-02-24 02:08:54,376 INFO L471 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) [2022-02-24 02:08:54,376 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 551 transitions. [2022-02-24 02:08:54,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-02-24 02:08:54,377 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:08:54,377 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:08:54,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-24 02:08:54,377 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:08:54,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:08:54,377 INFO L85 PathProgramCache]: Analyzing trace with hash 400358010, now seen corresponding path program 1 times [2022-02-24 02:08:54,378 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:08:54,378 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [117446079] [2022-02-24 02:08:54,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:08:54,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:08:54,384 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:08:54,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:54,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:08:54,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:54,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:08:54,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:54,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:08:54,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:54,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:08:54,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:54,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 02:08:54,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:54,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:08:54,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:54,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-24 02:08:54,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:54,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:08:54,634 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:08:54,634 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [117446079] [2022-02-24 02:08:54,634 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [117446079] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:08:54,634 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:08:54,634 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-24 02:08:54,634 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747420887] [2022-02-24 02:08:54,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:08:54,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-24 02:08:54,634 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:08:54,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-24 02:08:54,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-02-24 02:08:54,636 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) [2022-02-24 02:08:56,308 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:08:59,275 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:09:02,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:09:02,289 INFO L93 Difference]: Finished difference Result 433 states and 574 transitions. [2022-02-24 02:09:02,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-24 02:09:02,289 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 [2022-02-24 02:09:02,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:09:02,291 INFO L225 Difference]: With dead ends: 433 [2022-02-24 02:09:02,291 INFO L226 Difference]: Without dead ends: 429 [2022-02-24 02:09:02,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2022-02-24 02:09:02,292 INFO L933 BasicCegarLoop]: 300 mSDtfsCounter, 723 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 256 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-02-24 02:09:02,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [727 Valid, 476 Invalid, 936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 679 Invalid, 1 Unknown, 0 Unchecked, 7.4s Time] [2022-02-24 02:09:02,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2022-02-24 02:09:02,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 414. [2022-02-24 02:09:02,367 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) [2022-02-24 02:09:02,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 548 transitions. [2022-02-24 02:09:02,369 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 548 transitions. Word has length 62 [2022-02-24 02:09:02,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:09:02,369 INFO L470 AbstractCegarLoop]: Abstraction has 414 states and 548 transitions. [2022-02-24 02:09:02,369 INFO L471 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) [2022-02-24 02:09:02,369 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 548 transitions. [2022-02-24 02:09:02,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-02-24 02:09:02,370 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:09:02,370 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:09:02,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-24 02:09:02,370 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:09:02,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:09:02,371 INFO L85 PathProgramCache]: Analyzing trace with hash 466089939, now seen corresponding path program 1 times [2022-02-24 02:09:02,371 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:09:02,371 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359418176] [2022-02-24 02:09:02,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:09:02,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:09:02,378 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:09:02,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:02,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:09:02,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:02,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:09:02,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:02,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:09:02,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:02,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:09:02,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:02,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 02:09:02,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:02,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:09:02,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:02,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-24 02:09:02,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:02,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-02-24 02:09:02,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:02,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:09:02,680 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:09:02,680 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [359418176] [2022-02-24 02:09:02,680 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [359418176] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:09:02,680 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:09:02,680 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-24 02:09:02,680 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613688653] [2022-02-24 02:09:02,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:09:02,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-24 02:09:02,681 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:09:02,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-24 02:09:02,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-02-24 02:09:02,682 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) [2022-02-24 02:09:04,823 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:09:07,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:09:07,781 INFO L93 Difference]: Finished difference Result 448 states and 589 transitions. [2022-02-24 02:09:07,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-24 02:09:07,781 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 [2022-02-24 02:09:07,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:09:07,783 INFO L225 Difference]: With dead ends: 448 [2022-02-24 02:09:07,783 INFO L226 Difference]: Without dead ends: 440 [2022-02-24 02:09:07,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2022-02-24 02:09:07,785 INFO L933 BasicCegarLoop]: 333 mSDtfsCounter, 1489 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 497 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 1557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 497 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-02-24 02:09:07,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1498 Valid, 638 Invalid, 1557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [497 Valid, 1059 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2022-02-24 02:09:07,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2022-02-24 02:09:07,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 415. [2022-02-24 02:09:07,852 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) [2022-02-24 02:09:07,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 549 transitions. [2022-02-24 02:09:07,854 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 549 transitions. Word has length 61 [2022-02-24 02:09:07,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:09:07,854 INFO L470 AbstractCegarLoop]: Abstraction has 415 states and 549 transitions. [2022-02-24 02:09:07,854 INFO L471 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) [2022-02-24 02:09:07,855 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 549 transitions. [2022-02-24 02:09:07,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-02-24 02:09:07,856 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:09:07,856 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:09:07,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-24 02:09:07,856 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:09:07,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:09:07,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1325055407, now seen corresponding path program 1 times [2022-02-24 02:09:07,856 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:09:07,857 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1503092481] [2022-02-24 02:09:07,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:09:07,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:09:07,865 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:09:07,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:07,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:09:08,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:08,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:09:08,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:08,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:09:08,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:08,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:09:08,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:08,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 02:09:08,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:08,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:09:08,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:08,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-24 02:09:08,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:08,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-02-24 02:09:08,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:08,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:09:08,173 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:09:08,173 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1503092481] [2022-02-24 02:09:08,173 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1503092481] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:09:08,173 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:09:08,174 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-24 02:09:08,174 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175819271] [2022-02-24 02:09:08,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:09:08,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-24 02:09:08,174 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:09:08,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-24 02:09:08,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-02-24 02:09:08,174 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) [2022-02-24 02:09:09,351 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:09:12,004 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:09:14,019 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:09:16,039 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:09:18,063 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:09:20,621 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:09:22,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:09:22,410 INFO L93 Difference]: Finished difference Result 442 states and 581 transitions. [2022-02-24 02:09:22,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-24 02:09:22,410 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 [2022-02-24 02:09:22,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:09:22,412 INFO L225 Difference]: With dead ends: 442 [2022-02-24 02:09:22,412 INFO L226 Difference]: Without dead ends: 389 [2022-02-24 02:09:22,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=191, Invalid=511, Unknown=0, NotChecked=0, Total=702 [2022-02-24 02:09:22,414 INFO L933 BasicCegarLoop]: 337 mSDtfsCounter, 1383 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 1042 mSolverCounterSat, 448 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1391 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 1494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 448 IncrementalHoareTripleChecker+Valid, 1042 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2022-02-24 02:09:22,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1391 Valid, 639 Invalid, 1494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [448 Valid, 1042 Invalid, 4 Unknown, 0 Unchecked, 13.5s Time] [2022-02-24 02:09:22,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2022-02-24 02:09:22,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 371. [2022-02-24 02:09:22,459 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) [2022-02-24 02:09:22,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 493 transitions. [2022-02-24 02:09:22,461 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 493 transitions. Word has length 62 [2022-02-24 02:09:22,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:09:22,462 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 493 transitions. [2022-02-24 02:09:22,462 INFO L471 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) [2022-02-24 02:09:22,462 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 493 transitions. [2022-02-24 02:09:22,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-02-24 02:09:22,467 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:09:22,467 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:09:22,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-24 02:09:22,468 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:09:22,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:09:22,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1052170321, now seen corresponding path program 1 times [2022-02-24 02:09:22,468 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:09:22,468 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [285302673] [2022-02-24 02:09:22,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:09:22,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:09:22,480 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:09:22,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:22,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:09:22,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:22,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:09:22,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:22,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:09:22,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:22,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:09:22,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:22,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 02:09:22,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:22,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:09:22,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:22,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-24 02:09:22,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:22,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-24 02:09:22,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:22,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-24 02:09:22,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:22,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:09:22,917 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:09:22,917 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [285302673] [2022-02-24 02:09:22,917 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [285302673] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:09:22,917 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:09:22,917 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-24 02:09:22,917 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848847536] [2022-02-24 02:09:22,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:09:22,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-24 02:09:22,918 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:09:22,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-24 02:09:22,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-02-24 02:09:22,919 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) [2022-02-24 02:09:25,053 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 [] [2022-02-24 02:09:27,558 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:09:29,593 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:09:31,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:09:31,429 INFO L93 Difference]: Finished difference Result 417 states and 550 transitions. [2022-02-24 02:09:31,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-24 02:09:31,429 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 [2022-02-24 02:09:31,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:09:31,431 INFO L225 Difference]: With dead ends: 417 [2022-02-24 02:09:31,431 INFO L226 Difference]: Without dead ends: 409 [2022-02-24 02:09:31,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=190, Invalid=566, Unknown=0, NotChecked=0, Total=756 [2022-02-24 02:09:31,432 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 1016 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 1472 mSolverCounterSat, 322 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 1795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 1472 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-02-24 02:09:31,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1028 Valid, 652 Invalid, 1795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 1472 Invalid, 1 Unknown, 0 Unchecked, 8.0s Time] [2022-02-24 02:09:31,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2022-02-24 02:09:31,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 386. [2022-02-24 02:09:31,480 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) [2022-02-24 02:09:31,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 511 transitions. [2022-02-24 02:09:31,481 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 511 transitions. Word has length 72 [2022-02-24 02:09:31,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:09:31,481 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 511 transitions. [2022-02-24 02:09:31,481 INFO L471 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) [2022-02-24 02:09:31,481 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 511 transitions. [2022-02-24 02:09:31,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-02-24 02:09:31,482 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:09:31,482 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:09:31,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-02-24 02:09:31,483 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:09:31,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:09:31,483 INFO L85 PathProgramCache]: Analyzing trace with hash 2144673722, now seen corresponding path program 1 times [2022-02-24 02:09:31,483 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:09:31,483 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160196741] [2022-02-24 02:09:31,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:09:31,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:09:31,490 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:09:31,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:31,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:09:31,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:31,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:09:31,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:31,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:09:31,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:31,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:09:31,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:31,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 02:09:31,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:31,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:09:31,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:31,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-24 02:09:31,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:31,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-24 02:09:31,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:31,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-24 02:09:31,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:31,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:09:31,865 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:09:31,865 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160196741] [2022-02-24 02:09:31,865 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1160196741] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:09:31,865 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:09:31,865 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-24 02:09:31,865 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392827980] [2022-02-24 02:09:31,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:09:31,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-24 02:09:31,866 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:09:31,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-24 02:09:31,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-02-24 02:09:31,867 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) [2022-02-24 02:09:34,007 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 [] [2022-02-24 02:09:38,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:09:38,151 INFO L93 Difference]: Finished difference Result 417 states and 549 transitions. [2022-02-24 02:09:38,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-24 02:09:38,152 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 [2022-02-24 02:09:38,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:09:38,153 INFO L225 Difference]: With dead ends: 417 [2022-02-24 02:09:38,153 INFO L226 Difference]: Without dead ends: 409 [2022-02-24 02:09:38,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=190, Invalid=566, Unknown=0, NotChecked=0, Total=756 [2022-02-24 02:09:38,155 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 1226 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 396 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1238 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 1366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-02-24 02:09:38,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1238 Valid, 518 Invalid, 1366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 969 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2022-02-24 02:09:38,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2022-02-24 02:09:38,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 387. [2022-02-24 02:09:38,204 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) [2022-02-24 02:09:38,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 512 transitions. [2022-02-24 02:09:38,205 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 512 transitions. Word has length 73 [2022-02-24 02:09:38,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:09:38,205 INFO L470 AbstractCegarLoop]: Abstraction has 387 states and 512 transitions. [2022-02-24 02:09:38,205 INFO L471 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) [2022-02-24 02:09:38,205 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 512 transitions. [2022-02-24 02:09:38,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-24 02:09:38,206 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:09:38,206 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:09:38,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-02-24 02:09:38,207 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:09:38,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:09:38,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1821545128, now seen corresponding path program 1 times [2022-02-24 02:09:38,207 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:09:38,207 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [816395198] [2022-02-24 02:09:38,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:09:38,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:09:38,215 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:09:38,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:38,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:09:38,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:38,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:09:38,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:38,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:09:38,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:38,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:09:38,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:38,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 02:09:38,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:38,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:09:38,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:38,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-24 02:09:38,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:38,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-24 02:09:38,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:38,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-24 02:09:38,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:38,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:09:38,469 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:09:38,469 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [816395198] [2022-02-24 02:09:38,469 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [816395198] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:09:38,469 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:09:38,469 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-24 02:09:38,469 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80038656] [2022-02-24 02:09:38,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:09:38,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-24 02:09:38,470 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:09:38,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-24 02:09:38,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-02-24 02:09:38,470 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) [2022-02-24 02:09:40,052 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:09:41,497 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:09:43,520 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:09:45,118 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:09:46,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:09:46,089 INFO L93 Difference]: Finished difference Result 419 states and 554 transitions. [2022-02-24 02:09:46,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-24 02:09:46,090 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 [2022-02-24 02:09:46,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:09:46,092 INFO L225 Difference]: With dead ends: 419 [2022-02-24 02:09:46,092 INFO L226 Difference]: Without dead ends: 396 [2022-02-24 02:09:46,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2022-02-24 02:09:46,092 INFO L933 BasicCegarLoop]: 274 mSDtfsCounter, 1278 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 424 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1288 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 424 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-02-24 02:09:46,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1288 Valid, 410 Invalid, 917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [424 Valid, 492 Invalid, 1 Unknown, 0 Unchecked, 7.3s Time] [2022-02-24 02:09:46,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2022-02-24 02:09:46,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 381. [2022-02-24 02:09:46,144 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) [2022-02-24 02:09:46,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 501 transitions. [2022-02-24 02:09:46,145 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 501 transitions. Word has length 74 [2022-02-24 02:09:46,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:09:46,145 INFO L470 AbstractCegarLoop]: Abstraction has 381 states and 501 transitions. [2022-02-24 02:09:46,145 INFO L471 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) [2022-02-24 02:09:46,145 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 501 transitions. [2022-02-24 02:09:46,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-24 02:09:46,146 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:09:46,146 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:09:46,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-02-24 02:09:46,146 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:09:46,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:09:46,147 INFO L85 PathProgramCache]: Analyzing trace with hash 937494245, now seen corresponding path program 1 times [2022-02-24 02:09:46,147 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:09:46,147 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711218629] [2022-02-24 02:09:46,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:09:46,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:09:46,155 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:09:46,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:46,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:09:46,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:46,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:09:46,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:46,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:09:46,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:46,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:09:46,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:46,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 02:09:46,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:46,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:09:46,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:46,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-24 02:09:46,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:46,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-02-24 02:09:46,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:46,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-02-24 02:09:46,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:46,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:09:46,384 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:09:46,384 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [711218629] [2022-02-24 02:09:46,384 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [711218629] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:09:46,384 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:09:46,384 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-24 02:09:46,384 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953141470] [2022-02-24 02:09:46,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:09:46,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-24 02:09:46,385 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:09:46,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-24 02:09:46,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-02-24 02:09:46,385 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) [2022-02-24 02:09:48,522 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:09:50,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:09:50,746 INFO L93 Difference]: Finished difference Result 437 states and 561 transitions. [2022-02-24 02:09:50,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-24 02:09:50,746 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 [2022-02-24 02:09:50,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:09:50,748 INFO L225 Difference]: With dead ends: 437 [2022-02-24 02:09:50,748 INFO L226 Difference]: Without dead ends: 374 [2022-02-24 02:09:50,748 INFO L932 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 [2022-02-24 02:09:50,749 INFO L933 BasicCegarLoop]: 310 mSDtfsCounter, 680 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 210 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 1203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-02-24 02:09:50,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [690 Valid, 599 Invalid, 1203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 992 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2022-02-24 02:09:50,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-02-24 02:09:50,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 345. [2022-02-24 02:09:50,814 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) [2022-02-24 02:09:50,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 447 transitions. [2022-02-24 02:09:50,815 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 447 transitions. Word has length 77 [2022-02-24 02:09:50,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:09:50,815 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 447 transitions. [2022-02-24 02:09:50,815 INFO L471 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) [2022-02-24 02:09:50,815 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 447 transitions. [2022-02-24 02:09:50,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-24 02:09:50,816 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:09:50,816 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:09:50,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-02-24 02:09:50,817 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:09:50,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:09:50,817 INFO L85 PathProgramCache]: Analyzing trace with hash 641442499, now seen corresponding path program 1 times [2022-02-24 02:09:50,817 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:09:50,817 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1471731245] [2022-02-24 02:09:50,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:09:50,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:09:50,825 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:09:50,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:50,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:09:50,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:50,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:09:50,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:50,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:09:51,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:51,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:09:51,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:51,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 02:09:51,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:51,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:09:51,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:51,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-24 02:09:51,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:51,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-24 02:09:51,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:51,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-24 02:09:51,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:51,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:09:51,122 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:09:51,122 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1471731245] [2022-02-24 02:09:51,122 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1471731245] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:09:51,123 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:09:51,123 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-24 02:09:51,123 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348048697] [2022-02-24 02:09:51,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:09:51,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-24 02:09:51,123 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:09:51,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-24 02:09:51,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-02-24 02:09:51,124 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) [2022-02-24 02:09:52,754 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:09:54,773 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:09:56,791 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:09:58,810 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:10:00,826 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:10:02,846 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:10:04,864 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 [] [2022-02-24 02:10:07,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:10:07,144 INFO L93 Difference]: Finished difference Result 417 states and 534 transitions. [2022-02-24 02:10:07,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-24 02:10:07,144 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 [2022-02-24 02:10:07,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:10:07,146 INFO L225 Difference]: With dead ends: 417 [2022-02-24 02:10:07,146 INFO L226 Difference]: Without dead ends: 359 [2022-02-24 02:10:07,146 INFO L932 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 [2022-02-24 02:10:07,147 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 976 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 1696 mSolverCounterSat, 356 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 2058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 1696 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2022-02-24 02:10:07,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [979 Valid, 744 Invalid, 2058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 1696 Invalid, 6 Unknown, 0 Unchecked, 15.7s Time] [2022-02-24 02:10:07,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-02-24 02:10:07,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 344. [2022-02-24 02:10:07,194 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) [2022-02-24 02:10:07,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 442 transitions. [2022-02-24 02:10:07,195 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 442 transitions. Word has length 75 [2022-02-24 02:10:07,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:10:07,196 INFO L470 AbstractCegarLoop]: Abstraction has 344 states and 442 transitions. [2022-02-24 02:10:07,196 INFO L471 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) [2022-02-24 02:10:07,196 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 442 transitions. [2022-02-24 02:10:07,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-02-24 02:10:07,196 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:10:07,197 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:10:07,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-02-24 02:10:07,197 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:10:07,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:10:07,197 INFO L85 PathProgramCache]: Analyzing trace with hash 476602328, now seen corresponding path program 1 times [2022-02-24 02:10:07,197 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:10:07,197 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1783630612] [2022-02-24 02:10:07,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:10:07,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:10:07,204 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:10:07,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:07,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:10:07,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:07,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:10:07,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:07,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:10:07,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:07,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:10:07,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:07,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 02:10:07,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:07,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:10:07,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:07,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-24 02:10:07,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:07,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-02-24 02:10:07,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:07,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-24 02:10:07,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:07,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:10:07,520 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:10:07,521 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1783630612] [2022-02-24 02:10:07,521 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1783630612] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:10:07,521 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:10:07,521 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-24 02:10:07,521 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285736664] [2022-02-24 02:10:07,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:10:07,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-24 02:10:07,521 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:10:07,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-24 02:10:07,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-02-24 02:10:07,522 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) [2022-02-24 02:10:09,691 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:10:15,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:10:15,222 INFO L93 Difference]: Finished difference Result 422 states and 536 transitions. [2022-02-24 02:10:15,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-24 02:10:15,223 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 [2022-02-24 02:10:15,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:10:15,224 INFO L225 Difference]: With dead ends: 422 [2022-02-24 02:10:15,224 INFO L226 Difference]: Without dead ends: 379 [2022-02-24 02:10:15,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=260, Invalid=930, Unknown=0, NotChecked=0, Total=1190 [2022-02-24 02:10:15,225 INFO L933 BasicCegarLoop]: 303 mSDtfsCounter, 1039 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 1633 mSolverCounterSat, 376 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1044 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 2010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 376 IncrementalHoareTripleChecker+Valid, 1633 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-02-24 02:10:15,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1044 Valid, 692 Invalid, 2010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [376 Valid, 1633 Invalid, 1 Unknown, 0 Unchecked, 7.0s Time] [2022-02-24 02:10:15,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2022-02-24 02:10:15,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 344. [2022-02-24 02:10:15,276 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) [2022-02-24 02:10:15,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 439 transitions. [2022-02-24 02:10:15,277 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 439 transitions. Word has length 76 [2022-02-24 02:10:15,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:10:15,278 INFO L470 AbstractCegarLoop]: Abstraction has 344 states and 439 transitions. [2022-02-24 02:10:15,278 INFO L471 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) [2022-02-24 02:10:15,278 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 439 transitions. [2022-02-24 02:10:15,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-02-24 02:10:15,279 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:10:15,279 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:10:15,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-02-24 02:10:15,279 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:10:15,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:10:15,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1346047832, now seen corresponding path program 1 times [2022-02-24 02:10:15,279 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:10:15,280 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1140766949] [2022-02-24 02:10:15,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:10:15,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:10:15,287 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:10:15,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:15,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:10:15,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:15,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:10:15,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:15,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:10:15,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:15,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:10:15,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:15,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 02:10:15,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:15,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:10:15,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:15,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-24 02:10:15,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:15,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-24 02:10:15,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:15,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:10:15,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:15,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:10:15,560 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:10:15,560 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1140766949] [2022-02-24 02:10:15,560 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1140766949] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:10:15,560 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:10:15,560 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-24 02:10:15,560 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493401843] [2022-02-24 02:10:15,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:10:15,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-24 02:10:15,560 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:10:15,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-24 02:10:15,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-02-24 02:10:15,561 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) [2022-02-24 02:10:17,636 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:10:19,969 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:10:22,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:10:22,121 INFO L93 Difference]: Finished difference Result 378 states and 480 transitions. [2022-02-24 02:10:22,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-24 02:10:22,121 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 [2022-02-24 02:10:22,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:10:22,123 INFO L225 Difference]: With dead ends: 378 [2022-02-24 02:10:22,123 INFO L226 Difference]: Without dead ends: 355 [2022-02-24 02:10:22,123 INFO L932 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 [2022-02-24 02:10:22,123 INFO L933 BasicCegarLoop]: 274 mSDtfsCounter, 458 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 1227 mSolverCounterSat, 155 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 1383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1227 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-02-24 02:10:22,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [461 Valid, 627 Invalid, 1383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1227 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2022-02-24 02:10:22,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2022-02-24 02:10:22,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 335. [2022-02-24 02:10:22,174 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) [2022-02-24 02:10:22,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 429 transitions. [2022-02-24 02:10:22,175 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 429 transitions. Word has length 76 [2022-02-24 02:10:22,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:10:22,175 INFO L470 AbstractCegarLoop]: Abstraction has 335 states and 429 transitions. [2022-02-24 02:10:22,175 INFO L471 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) [2022-02-24 02:10:22,175 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 429 transitions. [2022-02-24 02:10:22,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-02-24 02:10:22,176 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:10:22,176 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:10:22,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-02-24 02:10:22,176 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:10:22,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:10:22,177 INFO L85 PathProgramCache]: Analyzing trace with hash 2131421, now seen corresponding path program 1 times [2022-02-24 02:10:22,177 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:10:22,177 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1566057349] [2022-02-24 02:10:22,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:10:22,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:10:22,185 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:10:22,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:22,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:10:22,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:22,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:10:22,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:22,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:10:22,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:22,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:10:22,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:22,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 02:10:22,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:22,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:10:22,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:22,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-24 02:10:22,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:22,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-02-24 02:10:22,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:22,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-24 02:10:22,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:22,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:10:22,488 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:10:22,488 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1566057349] [2022-02-24 02:10:22,488 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1566057349] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:10:22,488 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:10:22,488 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-24 02:10:22,488 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843791200] [2022-02-24 02:10:22,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:10:22,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-24 02:10:22,488 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:10:22,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-24 02:10:22,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-02-24 02:10:22,489 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) [2022-02-24 02:10:24,561 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:10:26,845 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:10:28,454 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:10:29,561 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:10:31,038 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:10:32,814 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:10:34,873 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:10:37,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:10:37,159 INFO L93 Difference]: Finished difference Result 398 states and 505 transitions. [2022-02-24 02:10:37,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-24 02:10:37,160 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 [2022-02-24 02:10:37,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:10:37,161 INFO L225 Difference]: With dead ends: 398 [2022-02-24 02:10:37,161 INFO L226 Difference]: Without dead ends: 354 [2022-02-24 02:10:37,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2022-02-24 02:10:37,162 INFO L933 BasicCegarLoop]: 272 mSDtfsCounter, 614 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 2450 mSolverCounterSat, 210 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 972 SdHoareTripleChecker+Invalid, 2661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 2450 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2022-02-24 02:10:37,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [618 Valid, 972 Invalid, 2661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 2450 Invalid, 1 Unknown, 0 Unchecked, 14.4s Time] [2022-02-24 02:10:37,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-02-24 02:10:37,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 334. [2022-02-24 02:10:37,222 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) [2022-02-24 02:10:37,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 427 transitions. [2022-02-24 02:10:37,223 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 427 transitions. Word has length 78 [2022-02-24 02:10:37,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:10:37,223 INFO L470 AbstractCegarLoop]: Abstraction has 334 states and 427 transitions. [2022-02-24 02:10:37,223 INFO L471 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) [2022-02-24 02:10:37,223 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 427 transitions. [2022-02-24 02:10:37,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-24 02:10:37,224 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:10:37,224 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:10:37,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-02-24 02:10:37,224 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:10:37,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:10:37,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1889602735, now seen corresponding path program 1 times [2022-02-24 02:10:37,225 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:10:37,225 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [673244724] [2022-02-24 02:10:37,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:10:37,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:10:37,233 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:10:37,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:37,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:10:37,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:37,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:10:37,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:37,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:10:37,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:37,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:10:37,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:37,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 02:10:37,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:37,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:10:37,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:37,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-24 02:10:37,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:37,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-02-24 02:10:37,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:37,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:10:37,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:37,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:10:37,539 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:10:37,539 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [673244724] [2022-02-24 02:10:37,539 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [673244724] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:10:37,539 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:10:37,539 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-24 02:10:37,539 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206844150] [2022-02-24 02:10:37,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:10:37,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-24 02:10:37,540 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:10:37,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-24 02:10:37,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-02-24 02:10:37,540 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) [2022-02-24 02:10:39,608 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:10:44,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:10:44,787 INFO L93 Difference]: Finished difference Result 475 states and 607 transitions. [2022-02-24 02:10:44,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-24 02:10:44,787 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 [2022-02-24 02:10:44,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:10:44,789 INFO L225 Difference]: With dead ends: 475 [2022-02-24 02:10:44,789 INFO L226 Difference]: Without dead ends: 367 [2022-02-24 02:10:44,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=117, Invalid=585, Unknown=0, NotChecked=0, Total=702 [2022-02-24 02:10:44,790 INFO L933 BasicCegarLoop]: 266 mSDtfsCounter, 668 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 2562 mSolverCounterSat, 235 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1001 SdHoareTripleChecker+Invalid, 2798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 2562 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-02-24 02:10:44,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [678 Valid, 1001 Invalid, 2798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 2562 Invalid, 1 Unknown, 0 Unchecked, 6.9s Time] [2022-02-24 02:10:44,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2022-02-24 02:10:44,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 338. [2022-02-24 02:10:44,853 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) [2022-02-24 02:10:44,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 432 transitions. [2022-02-24 02:10:44,854 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 432 transitions. Word has length 79 [2022-02-24 02:10:44,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:10:44,854 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 432 transitions. [2022-02-24 02:10:44,854 INFO L471 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) [2022-02-24 02:10:44,854 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 432 transitions. [2022-02-24 02:10:44,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-24 02:10:44,855 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:10:44,855 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:10:44,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-02-24 02:10:44,855 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:10:44,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:10:44,855 INFO L85 PathProgramCache]: Analyzing trace with hash -2045108737, now seen corresponding path program 1 times [2022-02-24 02:10:44,856 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:10:44,856 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1596154712] [2022-02-24 02:10:44,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:10:44,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:10:44,864 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:10:44,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:44,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:10:44,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:45,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:10:45,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:45,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:10:45,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:45,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:10:45,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:45,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 02:10:45,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:45,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:10:45,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:45,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-24 02:10:45,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:45,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-02-24 02:10:45,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:45,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-24 02:10:45,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:45,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:10:45,151 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:10:45,151 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1596154712] [2022-02-24 02:10:45,151 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1596154712] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:10:45,151 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:10:45,151 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-24 02:10:45,151 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82290350] [2022-02-24 02:10:45,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:10:45,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-24 02:10:45,152 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:10:45,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-24 02:10:45,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-02-24 02:10:45,152 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) [2022-02-24 02:10:47,054 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:10:48,575 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:10:50,601 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:10:52,618 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:10:53,776 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:10:55,795 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:10:59,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:10:59,124 INFO L93 Difference]: Finished difference Result 429 states and 546 transitions. [2022-02-24 02:10:59,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-24 02:10:59,125 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 [2022-02-24 02:10:59,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:10:59,126 INFO L225 Difference]: With dead ends: 429 [2022-02-24 02:10:59,126 INFO L226 Difference]: Without dead ends: 376 [2022-02-24 02:10:59,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=218, Invalid=652, Unknown=0, NotChecked=0, Total=870 [2022-02-24 02:10:59,127 INFO L933 BasicCegarLoop]: 276 mSDtfsCounter, 828 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 1308 mSolverCounterSat, 276 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 1587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 1308 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2022-02-24 02:10:59,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [843 Valid, 545 Invalid, 1587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 1308 Invalid, 3 Unknown, 0 Unchecked, 13.3s Time] [2022-02-24 02:10:59,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2022-02-24 02:10:59,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 329. [2022-02-24 02:10:59,194 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) [2022-02-24 02:10:59,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 418 transitions. [2022-02-24 02:10:59,195 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 418 transitions. Word has length 79 [2022-02-24 02:10:59,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:10:59,195 INFO L470 AbstractCegarLoop]: Abstraction has 329 states and 418 transitions. [2022-02-24 02:10:59,195 INFO L471 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) [2022-02-24 02:10:59,195 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 418 transitions. [2022-02-24 02:10:59,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-02-24 02:10:59,196 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:10:59,196 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:10:59,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-02-24 02:10:59,196 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:10:59,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:10:59,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1773831806, now seen corresponding path program 1 times [2022-02-24 02:10:59,197 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:10:59,197 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700438966] [2022-02-24 02:10:59,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:10:59,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:10:59,206 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:10:59,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:59,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:10:59,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:59,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:10:59,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:59,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:10:59,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:59,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:10:59,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:59,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 02:10:59,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:59,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:10:59,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:59,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-24 02:10:59,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:59,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-02-24 02:10:59,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:59,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-02-24 02:10:59,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:59,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:10:59,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:59,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-02-24 02:10:59,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:59,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:10:59,452 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:10:59,452 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [700438966] [2022-02-24 02:10:59,452 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [700438966] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:10:59,452 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:10:59,453 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-24 02:10:59,453 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828676350] [2022-02-24 02:10:59,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:10:59,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-24 02:10:59,453 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:10:59,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-24 02:10:59,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-02-24 02:10:59,453 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) [2022-02-24 02:11:02,428 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:11:04,444 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:11:06,468 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:11:08,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:11:08,928 INFO L93 Difference]: Finished difference Result 416 states and 527 transitions. [2022-02-24 02:11:08,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-24 02:11:08,928 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 [2022-02-24 02:11:08,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:11:08,930 INFO L225 Difference]: With dead ends: 416 [2022-02-24 02:11:08,930 INFO L226 Difference]: Without dead ends: 357 [2022-02-24 02:11:08,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=114, Invalid=266, Unknown=0, NotChecked=0, Total=380 [2022-02-24 02:11:08,931 INFO L933 BasicCegarLoop]: 263 mSDtfsCounter, 735 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 262 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 1137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:11:08,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [738 Valid, 562 Invalid, 1137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 872 Invalid, 3 Unknown, 0 Unchecked, 9.1s Time] [2022-02-24 02:11:08,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2022-02-24 02:11:08,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 327. [2022-02-24 02:11:08,987 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) [2022-02-24 02:11:08,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 413 transitions. [2022-02-24 02:11:08,988 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 413 transitions. Word has length 84 [2022-02-24 02:11:08,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:11:08,988 INFO L470 AbstractCegarLoop]: Abstraction has 327 states and 413 transitions. [2022-02-24 02:11:08,988 INFO L471 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) [2022-02-24 02:11:08,988 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 413 transitions. [2022-02-24 02:11:08,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-02-24 02:11:08,989 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:11:08,989 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:11:08,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-02-24 02:11:08,990 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:11:08,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:11:08,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1690581556, now seen corresponding path program 1 times [2022-02-24 02:11:08,990 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:11:08,990 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [186555050] [2022-02-24 02:11:08,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:11:08,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:11:08,999 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:11:09,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:09,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:11:09,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:09,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:11:09,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:09,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:11:09,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:09,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:11:09,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:09,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 02:11:09,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:09,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:11:09,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:09,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-24 02:11:09,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:09,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-02-24 02:11:09,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:09,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-24 02:11:09,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:09,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:11:09,301 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:11:09,301 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [186555050] [2022-02-24 02:11:09,301 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [186555050] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:11:09,301 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:11:09,301 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-24 02:11:09,301 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070822777] [2022-02-24 02:11:09,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:11:09,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-24 02:11:09,302 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:11:09,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-24 02:11:09,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-02-24 02:11:09,302 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) [2022-02-24 02:11:10,568 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:11:12,581 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:11:14,607 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:11:16,625 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:11:18,644 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:11:20,673 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:11:22,694 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:11:26,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:11:26,159 INFO L93 Difference]: Finished difference Result 371 states and 465 transitions. [2022-02-24 02:11:26,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-24 02:11:26,159 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 [2022-02-24 02:11:26,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:11:26,160 INFO L225 Difference]: With dead ends: 371 [2022-02-24 02:11:26,160 INFO L226 Difference]: Without dead ends: 346 [2022-02-24 02:11:26,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2022-02-24 02:11:26,161 INFO L933 BasicCegarLoop]: 260 mSDtfsCounter, 867 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 1159 mSolverCounterSat, 265 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 877 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 1430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 1159 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.4s IncrementalHoareTripleChecker+Time [2022-02-24 02:11:26,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [877 Valid, 574 Invalid, 1430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 1159 Invalid, 6 Unknown, 0 Unchecked, 16.4s Time] [2022-02-24 02:11:26,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2022-02-24 02:11:26,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 326. [2022-02-24 02:11:26,221 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) [2022-02-24 02:11:26,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 411 transitions. [2022-02-24 02:11:26,222 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 411 transitions. Word has length 80 [2022-02-24 02:11:26,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:11:26,222 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 411 transitions. [2022-02-24 02:11:26,222 INFO L471 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) [2022-02-24 02:11:26,223 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 411 transitions. [2022-02-24 02:11:26,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-02-24 02:11:26,223 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:11:26,223 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:11:26,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-02-24 02:11:26,224 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:11:26,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:11:26,224 INFO L85 PathProgramCache]: Analyzing trace with hash 664933900, now seen corresponding path program 1 times [2022-02-24 02:11:26,224 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:11:26,224 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1642937669] [2022-02-24 02:11:26,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:11:26,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:11:26,233 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:11:26,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:26,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:11:26,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:26,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:11:26,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:26,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:11:26,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:26,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:11:26,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:26,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 02:11:26,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:26,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:11:26,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:26,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-24 02:11:26,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:26,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-02-24 02:11:26,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:26,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-24 02:11:26,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:26,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:11:26,539 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:11:26,539 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1642937669] [2022-02-24 02:11:26,540 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1642937669] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:11:26,540 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:11:26,540 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-24 02:11:26,540 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023341079] [2022-02-24 02:11:26,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:11:26,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-24 02:11:26,540 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:11:26,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-24 02:11:26,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-02-24 02:11:26,541 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) [2022-02-24 02:11:28,702 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 [] [2022-02-24 02:11:31,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:11:31,850 INFO L93 Difference]: Finished difference Result 353 states and 444 transitions. [2022-02-24 02:11:31,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-24 02:11:31,852 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 [2022-02-24 02:11:31,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:11:31,853 INFO L225 Difference]: With dead ends: 353 [2022-02-24 02:11:31,853 INFO L226 Difference]: Without dead ends: 205 [2022-02-24 02:11:31,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=198, Invalid=672, Unknown=0, NotChecked=0, Total=870 [2022-02-24 02:11:31,854 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 1014 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 350 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1020 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 1610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 350 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-02-24 02:11:31,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1020 Valid, 471 Invalid, 1610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [350 Valid, 1259 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2022-02-24 02:11:31,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-02-24 02:11:31,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 186. [2022-02-24 02:11:31,898 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) [2022-02-24 02:11:31,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 220 transitions. [2022-02-24 02:11:31,899 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 220 transitions. Word has length 80 [2022-02-24 02:11:31,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:11:31,899 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 220 transitions. [2022-02-24 02:11:31,899 INFO L471 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) [2022-02-24 02:11:31,899 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 220 transitions. [2022-02-24 02:11:31,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-02-24 02:11:31,900 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:11:31,900 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:11:31,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-02-24 02:11:31,900 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:11:31,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:11:31,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1299022194, now seen corresponding path program 1 times [2022-02-24 02:11:31,901 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:11:31,901 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [937148798] [2022-02-24 02:11:31,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:11:31,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:11:31,909 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:11:31,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:32,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:11:32,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:32,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:11:32,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:32,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:11:32,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:32,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:11:32,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:32,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 02:11:32,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:32,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:11:32,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:32,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-24 02:11:32,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:32,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-02-24 02:11:32,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:32,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-02-24 02:11:32,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:32,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 02:11:32,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:32,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:11:32,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:32,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:11:32,198 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:11:32,198 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [937148798] [2022-02-24 02:11:32,198 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [937148798] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:11:32,198 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:11:32,198 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-24 02:11:32,199 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451480335] [2022-02-24 02:11:32,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:11:32,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-24 02:11:32,199 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:11:32,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-24 02:11:32,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-02-24 02:11:32,199 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) [2022-02-24 02:11:33,798 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:11:35,816 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:11:37,842 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:11:39,861 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:11:41,877 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:11:43,898 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 [] [2022-02-24 02:11:49,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:11:49,309 INFO L93 Difference]: Finished difference Result 300 states and 368 transitions. [2022-02-24 02:11:49,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-24 02:11:49,309 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 [2022-02-24 02:11:49,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:11:49,312 INFO L225 Difference]: With dead ends: 300 [2022-02-24 02:11:49,312 INFO L226 Difference]: Without dead ends: 237 [2022-02-24 02:11:49,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2022-02-24 02:11:49,316 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 230 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 127 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.8s IncrementalHoareTripleChecker+Time [2022-02-24 02:11:49,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 398 Invalid, 968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 836 Invalid, 5 Unknown, 0 Unchecked, 16.8s Time] [2022-02-24 02:11:49,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-02-24 02:11:49,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 199. [2022-02-24 02:11:49,386 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) [2022-02-24 02:11:49,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 233 transitions. [2022-02-24 02:11:49,387 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 233 transitions. Word has length 88 [2022-02-24 02:11:49,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:11:49,387 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 233 transitions. [2022-02-24 02:11:49,387 INFO L471 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) [2022-02-24 02:11:49,387 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 233 transitions. [2022-02-24 02:11:49,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-02-24 02:11:49,388 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:11:49,388 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:11:49,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-02-24 02:11:49,388 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:11:49,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:11:49,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1324935307, now seen corresponding path program 1 times [2022-02-24 02:11:49,388 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:11:49,389 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1361759347] [2022-02-24 02:11:49,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:11:49,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:11:49,397 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:11:49,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:49,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:11:49,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:49,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:11:49,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:49,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:11:49,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:49,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:11:49,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:49,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 02:11:49,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:49,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:11:49,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:49,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-24 02:11:49,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:49,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-02-24 02:11:49,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:49,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-02-24 02:11:49,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:49,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 02:11:49,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:49,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:11:49,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:49,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:11:49,647 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:11:49,647 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1361759347] [2022-02-24 02:11:49,647 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1361759347] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:11:49,647 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:11:49,647 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-24 02:11:49,647 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90357312] [2022-02-24 02:11:49,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:11:49,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-24 02:11:49,647 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:11:49,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-24 02:11:49,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-02-24 02:11:49,648 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) [2022-02-24 02:11:51,707 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:11:53,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:11:53,808 INFO L93 Difference]: Finished difference Result 437 states and 522 transitions. [2022-02-24 02:11:53,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-24 02:11:53,808 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 [2022-02-24 02:11:53,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:11:53,809 INFO L225 Difference]: With dead ends: 437 [2022-02-24 02:11:53,810 INFO L226 Difference]: Without dead ends: 408 [2022-02-24 02:11:53,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=109, Invalid=233, Unknown=0, NotChecked=0, Total=342 [2022-02-24 02:11:53,810 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 608 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 285 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 614 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-02-24 02:11:53,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [614 Valid, 282 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 483 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2022-02-24 02:11:53,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2022-02-24 02:11:53,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 345. [2022-02-24 02:11:53,900 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) [2022-02-24 02:11:53,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 409 transitions. [2022-02-24 02:11:53,901 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 409 transitions. Word has length 89 [2022-02-24 02:11:53,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:11:53,901 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 409 transitions. [2022-02-24 02:11:53,901 INFO L471 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) [2022-02-24 02:11:53,902 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 409 transitions. [2022-02-24 02:11:53,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-02-24 02:11:53,902 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:11:53,902 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:11:53,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-02-24 02:11:53,902 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:11:53,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:11:53,903 INFO L85 PathProgramCache]: Analyzing trace with hash 450072055, now seen corresponding path program 1 times [2022-02-24 02:11:53,903 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:11:53,903 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [969512265] [2022-02-24 02:11:53,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:11:53,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:11:53,912 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:11:53,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:54,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:11:54,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:54,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:11:54,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:54,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:11:54,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:54,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:11:54,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:54,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 02:11:54,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:54,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:11:54,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:54,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-24 02:11:54,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:54,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-02-24 02:11:54,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:54,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-02-24 02:11:54,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:54,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 02:11:54,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:54,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:11:54,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:54,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:11:54,176 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:11:54,176 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [969512265] [2022-02-24 02:11:54,176 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [969512265] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:11:54,176 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:11:54,176 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-24 02:11:54,176 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885482311] [2022-02-24 02:11:54,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:11:54,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-24 02:11:54,176 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:11:54,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-24 02:11:54,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-02-24 02:11:54,177 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) [2022-02-24 02:11:56,242 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:11:58,961 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:11:59,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:11:59,453 INFO L93 Difference]: Finished difference Result 657 states and 796 transitions. [2022-02-24 02:11:59,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-24 02:11:59,455 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 [2022-02-24 02:11:59,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:11:59,456 INFO L225 Difference]: With dead ends: 657 [2022-02-24 02:11:59,456 INFO L226 Difference]: Without dead ends: 399 [2022-02-24 02:11:59,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-02-24 02:11:59,457 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 219 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 107 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-02-24 02:11:59,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 393 Invalid, 957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 849 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2022-02-24 02:11:59,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2022-02-24 02:11:59,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 337. [2022-02-24 02:11:59,555 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) [2022-02-24 02:11:59,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 399 transitions. [2022-02-24 02:11:59,556 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 399 transitions. Word has length 89 [2022-02-24 02:11:59,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:11:59,556 INFO L470 AbstractCegarLoop]: Abstraction has 337 states and 399 transitions. [2022-02-24 02:11:59,557 INFO L471 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) [2022-02-24 02:11:59,557 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 399 transitions. [2022-02-24 02:11:59,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-02-24 02:11:59,557 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:11:59,557 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:11:59,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-02-24 02:11:59,558 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:11:59,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:11:59,558 INFO L85 PathProgramCache]: Analyzing trace with hash -623916271, now seen corresponding path program 1 times [2022-02-24 02:11:59,558 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:11:59,558 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1180597629] [2022-02-24 02:11:59,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:11:59,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:11:59,568 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:11:59,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:59,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:11:59,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:59,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:11:59,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:59,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:11:59,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:59,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:11:59,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:59,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 02:11:59,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:59,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:11:59,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:59,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 02:11:59,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:00,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-24 02:12:00,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:00,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-02-24 02:12:00,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:00,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-02-24 02:12:00,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:00,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-02-24 02:12:00,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:00,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 02:12:00,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:00,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:12:00,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:00,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:12:00,083 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:12:00,083 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1180597629] [2022-02-24 02:12:00,083 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1180597629] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:12:00,083 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:12:00,083 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-24 02:12:00,083 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816926133] [2022-02-24 02:12:00,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:12:00,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-24 02:12:00,083 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:12:00,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-24 02:12:00,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-02-24 02:12:00,085 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) [2022-02-24 02:12:01,556 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:12:03,572 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:12:06,580 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:12:08,596 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:12:10,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:12:10,886 INFO L93 Difference]: Finished difference Result 675 states and 810 transitions. [2022-02-24 02:12:10,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-24 02:12:10,886 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 [2022-02-24 02:12:10,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:12:10,887 INFO L225 Difference]: With dead ends: 675 [2022-02-24 02:12:10,887 INFO L226 Difference]: Without dead ends: 389 [2022-02-24 02:12:10,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2022-02-24 02:12:10,888 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 333 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 172 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2022-02-24 02:12:10,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [336 Valid, 313 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 471 Invalid, 3 Unknown, 0 Unchecked, 10.5s Time] [2022-02-24 02:12:10,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2022-02-24 02:12:10,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 339. [2022-02-24 02:12:10,977 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) [2022-02-24 02:12:10,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 401 transitions. [2022-02-24 02:12:10,978 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 401 transitions. Word has length 102 [2022-02-24 02:12:10,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:12:10,978 INFO L470 AbstractCegarLoop]: Abstraction has 339 states and 401 transitions. [2022-02-24 02:12:10,979 INFO L471 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) [2022-02-24 02:12:10,979 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 401 transitions. [2022-02-24 02:12:10,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-02-24 02:12:10,979 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:12:10,980 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:12:10,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-02-24 02:12:10,980 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:12:10,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:12:10,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1023672093, now seen corresponding path program 1 times [2022-02-24 02:12:10,980 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:12:10,980 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [395554924] [2022-02-24 02:12:10,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:12:10,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:12:11,004 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:12:11,004 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 02:12:11,005 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:12:11,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:11,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:12:11,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:11,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:12:11,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:11,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:12:11,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:11,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:12:11,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:11,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 02:12:11,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:11,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:12:11,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:11,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 02:12:11,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:11,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 02:12:11,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:11,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-02-24 02:12:11,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:11,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-24 02:12:11,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:11,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-02-24 02:12:11,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:11,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 02:12:11,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:11,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:12:11,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:11,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:12:11,574 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:12:11,574 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [395554924] [2022-02-24 02:12:11,574 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [395554924] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:12:11,574 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:12:11,574 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-24 02:12:11,574 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450819708] [2022-02-24 02:12:11,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:12:11,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-24 02:12:11,576 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:12:11,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-24 02:12:11,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-02-24 02:12:11,577 INFO L87 Difference]: Start difference. First operand 339 states and 401 transitions. Second operand has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 5 states have internal predecessors, (73), 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) [2022-02-24 02:12:13,655 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 [] [2022-02-24 02:12:15,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:12:15,714 INFO L93 Difference]: Finished difference Result 677 states and 812 transitions. [2022-02-24 02:12:15,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-24 02:12:15,714 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 5 states have internal predecessors, (73), 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 103 [2022-02-24 02:12:15,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:12:15,715 INFO L225 Difference]: With dead ends: 677 [2022-02-24 02:12:15,715 INFO L226 Difference]: Without dead ends: 391 [2022-02-24 02:12:15,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2022-02-24 02:12:15,716 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 270 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 137 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-02-24 02:12:15,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 389 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 648 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2022-02-24 02:12:15,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2022-02-24 02:12:15,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 341. [2022-02-24 02:12:15,806 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) [2022-02-24 02:12:15,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 403 transitions. [2022-02-24 02:12:15,807 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 403 transitions. Word has length 103 [2022-02-24 02:12:15,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:12:15,807 INFO L470 AbstractCegarLoop]: Abstraction has 341 states and 403 transitions. [2022-02-24 02:12:15,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 5 states have internal predecessors, (73), 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) [2022-02-24 02:12:15,808 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 403 transitions. [2022-02-24 02:12:15,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-02-24 02:12:15,808 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:12:15,808 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:12:15,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-02-24 02:12:15,809 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:12:15,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:12:15,809 INFO L85 PathProgramCache]: Analyzing trace with hash 559303825, now seen corresponding path program 2 times [2022-02-24 02:12:15,809 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:12:15,809 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2132381366] [2022-02-24 02:12:15,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:12:15,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:12:15,820 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:12:15,821 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 02:12:15,821 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:12:16,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:16,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:12:16,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:16,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:12:16,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:16,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:12:16,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:16,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:12:16,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:16,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 02:12:16,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:16,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:12:16,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:16,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 02:12:16,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:16,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-02-24 02:12:16,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:16,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-02-24 02:12:16,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:16,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-02-24 02:12:16,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:16,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-02-24 02:12:16,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:16,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 02:12:16,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:16,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:12:16,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:16,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:12:16,354 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:12:16,354 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2132381366] [2022-02-24 02:12:16,354 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2132381366] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:12:16,354 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:12:16,354 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-24 02:12:16,354 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606822229] [2022-02-24 02:12:16,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:12:16,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-24 02:12:16,354 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:12:16,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-24 02:12:16,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-02-24 02:12:16,355 INFO L87 Difference]: Start difference. First operand 341 states and 403 transitions. Second operand has 13 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 6 states have internal predecessors, (74), 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) [2022-02-24 02:12:18,423 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:12:20,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:12:20,580 INFO L93 Difference]: Finished difference Result 679 states and 814 transitions. [2022-02-24 02:12:20,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-24 02:12:20,580 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 6 states have internal predecessors, (74), 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 104 [2022-02-24 02:12:20,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:12:20,582 INFO L225 Difference]: With dead ends: 679 [2022-02-24 02:12:20,582 INFO L226 Difference]: Without dead ends: 393 [2022-02-24 02:12:20,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2022-02-24 02:12:20,583 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 270 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 138 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-02-24 02:12:20,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 389 Invalid, 792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 653 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2022-02-24 02:12:20,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-02-24 02:12:20,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 343. [2022-02-24 02:12:20,688 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) [2022-02-24 02:12:20,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 405 transitions. [2022-02-24 02:12:20,689 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 405 transitions. Word has length 104 [2022-02-24 02:12:20,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:12:20,689 INFO L470 AbstractCegarLoop]: Abstraction has 343 states and 405 transitions. [2022-02-24 02:12:20,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 6 states have internal predecessors, (74), 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) [2022-02-24 02:12:20,689 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 405 transitions. [2022-02-24 02:12:20,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-02-24 02:12:20,690 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:12:20,690 INFO L514 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:12:20,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-02-24 02:12:20,690 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:12:20,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:12:20,691 INFO L85 PathProgramCache]: Analyzing trace with hash -951210595, now seen corresponding path program 3 times [2022-02-24 02:12:20,691 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:12:20,691 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1384396558] [2022-02-24 02:12:20,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:12:20,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:12:20,702 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:12:20,702 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 02:12:20,702 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:12:20,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:20,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:12:20,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:20,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:12:20,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:20,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:12:20,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:21,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:12:21,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:21,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 02:12:21,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:21,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:12:21,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:21,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 02:12:21,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:21,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-24 02:12:21,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:21,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-02-24 02:12:21,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:21,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-02-24 02:12:21,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:21,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-02-24 02:12:21,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:21,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 02:12:21,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:21,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:12:21,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:21,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:12:21,230 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:12:21,230 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1384396558] [2022-02-24 02:12:21,230 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1384396558] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:12:21,230 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:12:21,230 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-24 02:12:21,230 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547707420] [2022-02-24 02:12:21,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:12:21,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-24 02:12:21,231 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:12:21,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-24 02:12:21,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-02-24 02:12:21,231 INFO L87 Difference]: Start difference. First operand 343 states and 405 transitions. Second operand has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 7 states have internal predecessors, (75), 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) [2022-02-24 02:12:23,297 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:12:25,712 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:12:27,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:12:27,350 INFO L93 Difference]: Finished difference Result 681 states and 816 transitions. [2022-02-24 02:12:27,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-24 02:12:27,350 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 7 states have internal predecessors, (75), 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 105 [2022-02-24 02:12:27,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:12:27,352 INFO L225 Difference]: With dead ends: 681 [2022-02-24 02:12:27,352 INFO L226 Difference]: Without dead ends: 395 [2022-02-24 02:12:27,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2022-02-24 02:12:27,353 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 266 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 142 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-02-24 02:12:27,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [269 Valid, 392 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 704 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2022-02-24 02:12:27,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2022-02-24 02:12:27,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 345. [2022-02-24 02:12:27,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 270 states have (on average 1.2259259259259259) internal successors, (331), 274 states have internal predecessors, (331), 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) [2022-02-24 02:12:27,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 407 transitions. [2022-02-24 02:12:27,462 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 407 transitions. Word has length 105 [2022-02-24 02:12:27,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:12:27,462 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 407 transitions. [2022-02-24 02:12:27,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 7 states have internal predecessors, (75), 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) [2022-02-24 02:12:27,462 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 407 transitions. [2022-02-24 02:12:27,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-02-24 02:12:27,463 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:12:27,463 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:12:27,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-02-24 02:12:27,464 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:12:27,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:12:27,464 INFO L85 PathProgramCache]: Analyzing trace with hash -532517359, now seen corresponding path program 4 times [2022-02-24 02:12:27,464 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:12:27,464 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1517361870] [2022-02-24 02:12:27,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:12:27,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:12:27,476 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:12:27,476 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 02:12:27,477 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:12:27,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:27,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:12:27,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:27,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:12:27,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:27,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:12:27,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:27,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:12:27,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:27,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 02:12:27,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:27,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:12:27,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:27,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 02:12:27,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:27,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-02-24 02:12:27,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:28,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-02-24 02:12:28,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:28,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-02-24 02:12:28,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:28,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-02-24 02:12:28,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:28,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 02:12:28,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:28,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:12:28,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:28,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:12:28,058 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:12:28,058 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1517361870] [2022-02-24 02:12:28,058 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1517361870] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:12:28,058 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:12:28,058 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-24 02:12:28,058 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641192135] [2022-02-24 02:12:28,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:12:28,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-24 02:12:28,058 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:12:28,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-24 02:12:28,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-02-24 02:12:28,059 INFO L87 Difference]: Start difference. First operand 345 states and 407 transitions. Second operand has 15 states, 15 states have (on average 5.066666666666666) internal successors, (76), 8 states have internal predecessors, (76), 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) [2022-02-24 02:12:30,134 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 [] [2022-02-24 02:12:32,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:12:32,263 INFO L93 Difference]: Finished difference Result 683 states and 818 transitions. [2022-02-24 02:12:32,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-24 02:12:32,263 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.066666666666666) internal successors, (76), 8 states have internal predecessors, (76), 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 106 [2022-02-24 02:12:32,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:12:32,265 INFO L225 Difference]: With dead ends: 683 [2022-02-24 02:12:32,265 INFO L226 Difference]: Without dead ends: 397 [2022-02-24 02:12:32,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=126, Invalid=426, Unknown=0, NotChecked=0, Total=552 [2022-02-24 02:12:32,266 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 213 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 108 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-02-24 02:12:32,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 407 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 838 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2022-02-24 02:12:32,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2022-02-24 02:12:32,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 347. [2022-02-24 02:12:32,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 272 states have (on average 1.224264705882353) internal successors, (333), 276 states have internal predecessors, (333), 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) [2022-02-24 02:12:32,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 409 transitions. [2022-02-24 02:12:32,373 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 409 transitions. Word has length 106 [2022-02-24 02:12:32,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:12:32,373 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 409 transitions. [2022-02-24 02:12:32,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.066666666666666) internal successors, (76), 8 states have internal predecessors, (76), 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) [2022-02-24 02:12:32,373 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 409 transitions. [2022-02-24 02:12:32,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-02-24 02:12:32,374 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:12:32,374 INFO L514 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:12:32,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-02-24 02:12:32,374 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:12:32,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:12:32,374 INFO L85 PathProgramCache]: Analyzing trace with hash -437928931, now seen corresponding path program 5 times [2022-02-24 02:12:32,374 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:12:32,374 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1122568730] [2022-02-24 02:12:32,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:12:32,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:12:32,385 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:12:32,385 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 02:12:32,386 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:12:32,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:32,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:12:32,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:32,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:12:32,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:32,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:12:32,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:32,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:12:32,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:32,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 02:12:32,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:32,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:12:32,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:32,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 02:12:32,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:32,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-24 02:12:32,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:32,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-02-24 02:12:32,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:32,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-02-24 02:12:32,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:32,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-02-24 02:12:32,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:32,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 02:12:32,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:32,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:12:32,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:32,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:12:32,955 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:12:32,955 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1122568730] [2022-02-24 02:12:32,955 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1122568730] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:12:32,955 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:12:32,956 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-24 02:12:32,956 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361827288] [2022-02-24 02:12:32,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:12:32,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-24 02:12:32,956 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:12:32,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-24 02:12:32,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-02-24 02:12:32,956 INFO L87 Difference]: Start difference. First operand 347 states and 409 transitions. Second operand has 16 states, 16 states have (on average 4.8125) internal successors, (77), 9 states have internal predecessors, (77), 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) [2022-02-24 02:12:35,023 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 [] [2022-02-24 02:12:38,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:12:38,834 INFO L93 Difference]: Finished difference Result 685 states and 820 transitions. [2022-02-24 02:12:38,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-24 02:12:38,834 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.8125) internal successors, (77), 9 states have internal predecessors, (77), 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 107 [2022-02-24 02:12:38,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:12:38,836 INFO L225 Difference]: With dead ends: 685 [2022-02-24 02:12:38,836 INFO L226 Difference]: Without dead ends: 399 [2022-02-24 02:12:38,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=139, Invalid=511, Unknown=0, NotChecked=0, Total=650 [2022-02-24 02:12:38,837 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 258 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 161 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 1073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-02-24 02:12:38,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 498 Invalid, 1073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 911 Invalid, 1 Unknown, 0 Unchecked, 5.2s Time] [2022-02-24 02:12:38,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2022-02-24 02:12:38,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 349. [2022-02-24 02:12:38,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 274 states have (on average 1.2226277372262773) internal successors, (335), 278 states have internal predecessors, (335), 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) [2022-02-24 02:12:38,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 411 transitions. [2022-02-24 02:12:38,956 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 411 transitions. Word has length 107 [2022-02-24 02:12:38,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:12:38,956 INFO L470 AbstractCegarLoop]: Abstraction has 349 states and 411 transitions. [2022-02-24 02:12:38,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.8125) internal successors, (77), 9 states have internal predecessors, (77), 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) [2022-02-24 02:12:38,956 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 411 transitions. [2022-02-24 02:12:38,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-02-24 02:12:38,957 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:12:38,957 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:12:38,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-02-24 02:12:38,957 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:12:38,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:12:38,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1800654959, now seen corresponding path program 6 times [2022-02-24 02:12:38,958 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:12:38,958 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [782050483] [2022-02-24 02:12:38,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:12:38,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:12:38,969 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:12:38,969 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 02:12:38,969 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:12:39,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:39,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:12:39,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:39,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:12:39,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:39,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:12:39,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:39,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:12:39,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:39,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 02:12:39,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:39,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:12:39,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:39,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 02:12:39,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:39,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-02-24 02:12:39,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:39,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-24 02:12:39,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:39,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-02-24 02:12:39,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:39,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-02-24 02:12:39,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:39,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 02:12:39,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:39,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:12:39,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:39,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:12:39,744 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:12:39,745 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [782050483] [2022-02-24 02:12:39,745 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [782050483] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:12:39,745 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:12:39,745 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-24 02:12:39,745 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579242125] [2022-02-24 02:12:39,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:12:39,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-24 02:12:39,745 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:12:39,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-24 02:12:39,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2022-02-24 02:12:39,746 INFO L87 Difference]: Start difference. First operand 349 states and 411 transitions. Second operand has 17 states, 17 states have (on average 4.588235294117647) internal successors, (78), 10 states have internal predecessors, (78), 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) [2022-02-24 02:12:41,807 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:12:44,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:12:44,999 INFO L93 Difference]: Finished difference Result 687 states and 822 transitions. [2022-02-24 02:12:44,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-24 02:12:44,999 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.588235294117647) internal successors, (78), 10 states have internal predecessors, (78), 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 108 [2022-02-24 02:12:44,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:12:45,008 INFO L225 Difference]: With dead ends: 687 [2022-02-24 02:12:45,008 INFO L226 Difference]: Without dead ends: 401 [2022-02-24 02:12:45,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=152, Invalid=604, Unknown=0, NotChecked=0, Total=756 [2022-02-24 02:12:45,009 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 324 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 192 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-02-24 02:12:45,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [327 Valid, 345 Invalid, 798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 605 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2022-02-24 02:12:45,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2022-02-24 02:12:45,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 351. [2022-02-24 02:12:45,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 276 states have (on average 1.2210144927536233) internal successors, (337), 280 states have internal predecessors, (337), 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) [2022-02-24 02:12:45,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 413 transitions. [2022-02-24 02:12:45,117 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 413 transitions. Word has length 108 [2022-02-24 02:12:45,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:12:45,117 INFO L470 AbstractCegarLoop]: Abstraction has 351 states and 413 transitions. [2022-02-24 02:12:45,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.588235294117647) internal successors, (78), 10 states have internal predecessors, (78), 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) [2022-02-24 02:12:45,117 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 413 transitions. [2022-02-24 02:12:45,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-02-24 02:12:45,118 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:12:45,118 INFO L514 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:12:45,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-02-24 02:12:45,119 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:12:45,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:12:45,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1095488867, now seen corresponding path program 7 times [2022-02-24 02:12:45,119 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:12:45,119 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1309518501] [2022-02-24 02:12:45,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:12:45,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:12:45,131 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:12:45,131 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 02:12:45,131 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:12:45,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:45,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:12:45,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:45,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:12:45,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:45,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:12:45,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:45,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:12:45,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:45,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 02:12:45,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:45,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:12:45,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:45,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 02:12:45,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:45,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-02-24 02:12:45,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:45,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-02-24 02:12:45,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:45,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-02-24 02:12:45,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:45,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-24 02:12:45,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:45,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 02:12:45,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:45,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:12:45,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:45,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:12:45,780 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:12:45,780 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1309518501] [2022-02-24 02:12:45,780 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1309518501] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:12:45,780 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:12:45,780 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-02-24 02:12:45,780 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684100483] [2022-02-24 02:12:45,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:12:45,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-24 02:12:45,780 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:12:45,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-24 02:12:45,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-02-24 02:12:45,781 INFO L87 Difference]: Start difference. First operand 351 states and 413 transitions. Second operand has 18 states, 18 states have (on average 4.388888888888889) internal successors, (79), 11 states have internal predecessors, (79), 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) [2022-02-24 02:12:47,848 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:12:52,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:12:52,066 INFO L93 Difference]: Finished difference Result 689 states and 824 transitions. [2022-02-24 02:12:52,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-24 02:12:52,066 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.388888888888889) internal successors, (79), 11 states have internal predecessors, (79), 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 109 [2022-02-24 02:12:52,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:12:52,068 INFO L225 Difference]: With dead ends: 689 [2022-02-24 02:12:52,068 INFO L226 Difference]: Without dead ends: 403 [2022-02-24 02:12:52,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=165, Invalid=705, Unknown=0, NotChecked=0, Total=870 [2022-02-24 02:12:52,069 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 266 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 1116 mSolverCounterSat, 156 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 1273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 1116 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-02-24 02:12:52,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [269 Valid, 533 Invalid, 1273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 1116 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2022-02-24 02:12:52,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2022-02-24 02:12:52,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 353. [2022-02-24 02:12:52,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 278 states have (on average 1.2194244604316546) internal successors, (339), 282 states have internal predecessors, (339), 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) [2022-02-24 02:12:52,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 415 transitions. [2022-02-24 02:12:52,185 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 415 transitions. Word has length 109 [2022-02-24 02:12:52,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:12:52,186 INFO L470 AbstractCegarLoop]: Abstraction has 353 states and 415 transitions. [2022-02-24 02:12:52,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.388888888888889) internal successors, (79), 11 states have internal predecessors, (79), 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) [2022-02-24 02:12:52,186 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 415 transitions. [2022-02-24 02:12:52,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-02-24 02:12:52,186 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:12:52,186 INFO L514 BasicCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:12:52,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-02-24 02:12:52,187 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:12:52,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:12:52,187 INFO L85 PathProgramCache]: Analyzing trace with hash -710176495, now seen corresponding path program 8 times [2022-02-24 02:12:52,187 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:12:52,187 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2023903838] [2022-02-24 02:12:52,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:12:52,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:12:52,199 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:12:52,199 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 02:12:52,199 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:12:52,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:52,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:12:52,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:52,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:12:52,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:52,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:12:52,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:52,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:12:52,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:52,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 02:12:52,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:52,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:12:52,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:52,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 02:12:52,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:52,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 02:12:52,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:53,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-02-24 02:12:53,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:53,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-02-24 02:12:53,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:53,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-02-24 02:12:53,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:53,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 02:12:53,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:53,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:12:53,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:53,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:12:53,093 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:12:53,093 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2023903838] [2022-02-24 02:12:53,093 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2023903838] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:12:53,093 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:12:53,093 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-02-24 02:12:53,093 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801042790] [2022-02-24 02:12:53,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:12:53,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-24 02:12:53,094 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:12:53,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-24 02:12:53,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2022-02-24 02:12:53,094 INFO L87 Difference]: Start difference. First operand 353 states and 415 transitions. Second operand has 19 states, 19 states have (on average 4.2105263157894735) internal successors, (80), 12 states have internal predecessors, (80), 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) [2022-02-24 02:12:55,170 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:12:58,638 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:13:01,231 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:13:01,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:13:01,918 INFO L93 Difference]: Finished difference Result 691 states and 826 transitions. [2022-02-24 02:13:01,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-24 02:13:01,918 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.2105263157894735) internal successors, (80), 12 states have internal predecessors, (80), 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 110 [2022-02-24 02:13:01,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:13:01,919 INFO L225 Difference]: With dead ends: 691 [2022-02-24 02:13:01,920 INFO L226 Difference]: Without dead ends: 405 [2022-02-24 02:13:01,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=178, Invalid=814, Unknown=0, NotChecked=0, Total=992 [2022-02-24 02:13:01,921 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 271 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 1321 mSolverCounterSat, 157 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 1479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1321 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-02-24 02:13:01,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 595 Invalid, 1479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1321 Invalid, 1 Unknown, 0 Unchecked, 8.0s Time] [2022-02-24 02:13:01,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2022-02-24 02:13:02,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 355. [2022-02-24 02:13:02,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 280 states have (on average 1.2178571428571427) internal successors, (341), 284 states have internal predecessors, (341), 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) [2022-02-24 02:13:02,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 417 transitions. [2022-02-24 02:13:02,036 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 417 transitions. Word has length 110 [2022-02-24 02:13:02,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:13:02,037 INFO L470 AbstractCegarLoop]: Abstraction has 355 states and 417 transitions. [2022-02-24 02:13:02,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.2105263157894735) internal successors, (80), 12 states have internal predecessors, (80), 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) [2022-02-24 02:13:02,037 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 417 transitions. [2022-02-24 02:13:02,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-02-24 02:13:02,038 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:13:02,038 INFO L514 BasicCegarLoop]: trace histogram [9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:13:02,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-02-24 02:13:02,038 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:13:02,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:13:02,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1650394851, now seen corresponding path program 9 times [2022-02-24 02:13:02,038 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:13:02,038 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1711409748] [2022-02-24 02:13:02,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:13:02,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:13:02,052 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:13:02,053 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 02:13:02,053 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:13:02,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:02,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:13:02,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:02,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:13:02,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:02,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:13:02,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:02,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:13:02,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:02,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 02:13:02,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:02,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:13:02,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:02,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 02:13:02,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:02,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-02-24 02:13:02,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:02,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-02-24 02:13:02,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:02,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-24 02:13:02,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:02,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-02-24 02:13:02,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:02,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 02:13:02,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:02,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:13:02,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:02,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:13:02,840 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:13:02,841 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1711409748] [2022-02-24 02:13:02,841 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1711409748] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:13:02,841 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:13:02,841 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-24 02:13:02,841 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399632725] [2022-02-24 02:13:02,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:13:02,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-24 02:13:02,841 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:13:02,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-24 02:13:02,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2022-02-24 02:13:02,842 INFO L87 Difference]: Start difference. First operand 355 states and 417 transitions. Second operand has 20 states, 20 states have (on average 4.05) internal successors, (81), 13 states have internal predecessors, (81), 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) [2022-02-24 02:13:04,782 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:13:06,807 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:13:08,823 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:13:10,839 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:13:11,897 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:13:13,914 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:13:15,932 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:13:17,057 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:13:19,072 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:13:21,985 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:13:25,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:13:25,049 INFO L93 Difference]: Finished difference Result 693 states and 828 transitions. [2022-02-24 02:13:25,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-24 02:13:25,049 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.05) internal successors, (81), 13 states have internal predecessors, (81), 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 111 [2022-02-24 02:13:25,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:13:25,051 INFO L225 Difference]: With dead ends: 693 [2022-02-24 02:13:25,051 INFO L226 Difference]: Without dead ends: 407 [2022-02-24 02:13:25,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=191, Invalid=931, Unknown=0, NotChecked=0, Total=1122 [2022-02-24 02:13:25,052 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 271 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 1229 mSolverCounterSat, 162 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 1397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 1229 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.4s IncrementalHoareTripleChecker+Time [2022-02-24 02:13:25,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 548 Invalid, 1397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 1229 Invalid, 6 Unknown, 0 Unchecked, 21.4s Time] [2022-02-24 02:13:25,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2022-02-24 02:13:25,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 357. [2022-02-24 02:13:25,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 282 states have (on average 1.2163120567375887) internal successors, (343), 286 states have internal predecessors, (343), 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) [2022-02-24 02:13:25,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 419 transitions. [2022-02-24 02:13:25,170 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 419 transitions. Word has length 111 [2022-02-24 02:13:25,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:13:25,170 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 419 transitions. [2022-02-24 02:13:25,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.05) internal successors, (81), 13 states have internal predecessors, (81), 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) [2022-02-24 02:13:25,170 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 419 transitions. [2022-02-24 02:13:25,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-02-24 02:13:25,171 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:13:25,171 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:13:25,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-02-24 02:13:25,171 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:13:25,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:13:25,172 INFO L85 PathProgramCache]: Analyzing trace with hash -732392815, now seen corresponding path program 10 times [2022-02-24 02:13:25,172 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:13:25,172 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1015382158] [2022-02-24 02:13:25,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:13:25,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:13:25,186 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:13:25,186 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 02:13:25,187 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:13:25,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:25,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:13:25,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:25,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:13:25,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:25,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:13:25,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:25,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:13:25,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:25,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 02:13:25,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:25,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:13:25,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:25,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 02:13:25,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:25,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-02-24 02:13:25,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:25,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-02-24 02:13:25,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:25,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-02-24 02:13:25,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:25,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-02-24 02:13:25,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:25,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 02:13:25,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:25,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:13:25,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:25,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:13:25,941 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:13:25,941 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1015382158] [2022-02-24 02:13:25,941 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1015382158] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:13:25,941 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:13:25,941 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-24 02:13:25,941 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815721621] [2022-02-24 02:13:25,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:13:25,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-24 02:13:25,941 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:13:25,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-24 02:13:25,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2022-02-24 02:13:25,942 INFO L87 Difference]: Start difference. First operand 357 states and 419 transitions. Second operand has 21 states, 21 states have (on average 3.9047619047619047) internal successors, (82), 14 states have internal predecessors, (82), 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) [2022-02-24 02:13:28,024 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:13:32,466 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:13:33,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:13:33,110 INFO L93 Difference]: Finished difference Result 695 states and 830 transitions. [2022-02-24 02:13:33,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-24 02:13:33,110 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.9047619047619047) internal successors, (82), 14 states have internal predecessors, (82), 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 112 [2022-02-24 02:13:33,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:13:33,112 INFO L225 Difference]: With dead ends: 695 [2022-02-24 02:13:33,112 INFO L226 Difference]: Without dead ends: 409 [2022-02-24 02:13:33,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=204, Invalid=1056, Unknown=0, NotChecked=0, Total=1260 [2022-02-24 02:13:33,113 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 386 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 1339 mSolverCounterSat, 254 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 1594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 1339 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-02-24 02:13:33,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [389 Valid, 609 Invalid, 1594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 1339 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2022-02-24 02:13:33,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2022-02-24 02:13:33,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 359. [2022-02-24 02:13:33,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 284 states have (on average 1.2147887323943662) internal successors, (345), 288 states have internal predecessors, (345), 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) [2022-02-24 02:13:33,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 421 transitions. [2022-02-24 02:13:33,245 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 421 transitions. Word has length 112 [2022-02-24 02:13:33,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:13:33,245 INFO L470 AbstractCegarLoop]: Abstraction has 359 states and 421 transitions. [2022-02-24 02:13:33,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.9047619047619047) internal successors, (82), 14 states have internal predecessors, (82), 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) [2022-02-24 02:13:33,245 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 421 transitions. [2022-02-24 02:13:33,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-02-24 02:13:33,246 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:13:33,246 INFO L514 BasicCegarLoop]: trace histogram [11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:13:33,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-02-24 02:13:33,246 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:13:33,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:13:33,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1955866525, now seen corresponding path program 11 times [2022-02-24 02:13:33,246 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:13:33,246 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1554196122] [2022-02-24 02:13:33,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:13:33,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:13:33,262 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:13:33,263 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 02:13:33,263 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:13:33,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:33,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:13:33,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:33,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:13:33,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:33,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:13:33,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:33,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:13:33,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:33,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 02:13:33,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:33,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:13:33,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:33,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 02:13:33,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:33,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-02-24 02:13:33,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:33,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-02-24 02:13:33,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:33,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-02-24 02:13:33,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:33,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-02-24 02:13:33,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:34,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 02:13:34,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:34,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:13:34,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:34,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:13:34,030 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:13:34,030 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1554196122] [2022-02-24 02:13:34,030 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1554196122] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:13:34,030 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:13:34,030 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-02-24 02:13:34,030 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379030793] [2022-02-24 02:13:34,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:13:34,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-24 02:13:34,031 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:13:34,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-24 02:13:34,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2022-02-24 02:13:34,031 INFO L87 Difference]: Start difference. First operand 359 states and 421 transitions. Second operand has 22 states, 22 states have (on average 3.772727272727273) internal successors, (83), 15 states have internal predecessors, (83), 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) [2022-02-24 02:13:36,108 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:13:42,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:13:42,168 INFO L93 Difference]: Finished difference Result 697 states and 832 transitions. [2022-02-24 02:13:42,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-24 02:13:42,169 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.772727272727273) internal successors, (83), 15 states have internal predecessors, (83), 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 113 [2022-02-24 02:13:42,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:13:42,170 INFO L225 Difference]: With dead ends: 697 [2022-02-24 02:13:42,170 INFO L226 Difference]: Without dead ends: 411 [2022-02-24 02:13:42,171 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=217, Invalid=1189, Unknown=0, NotChecked=0, Total=1406 [2022-02-24 02:13:42,171 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 328 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 1618 mSolverCounterSat, 213 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 1832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 1618 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-02-24 02:13:42,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 703 Invalid, 1832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 1618 Invalid, 1 Unknown, 0 Unchecked, 7.2s Time] [2022-02-24 02:13:42,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2022-02-24 02:13:42,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 361. [2022-02-24 02:13:42,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 286 states have (on average 1.2132867132867133) internal successors, (347), 290 states have internal predecessors, (347), 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) [2022-02-24 02:13:42,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 423 transitions. [2022-02-24 02:13:42,305 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 423 transitions. Word has length 113 [2022-02-24 02:13:42,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:13:42,305 INFO L470 AbstractCegarLoop]: Abstraction has 361 states and 423 transitions. [2022-02-24 02:13:42,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.772727272727273) internal successors, (83), 15 states have internal predecessors, (83), 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) [2022-02-24 02:13:42,305 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 423 transitions. [2022-02-24 02:13:42,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-02-24 02:13:42,306 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:13:42,306 INFO L514 BasicCegarLoop]: trace histogram [12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:13:42,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-02-24 02:13:42,306 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:13:42,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:13:42,306 INFO L85 PathProgramCache]: Analyzing trace with hash -607439855, now seen corresponding path program 12 times [2022-02-24 02:13:42,306 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:13:42,306 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [349958250] [2022-02-24 02:13:42,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:13:42,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:13:42,322 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:13:42,322 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 02:13:42,322 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:13:42,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:42,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:13:42,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:42,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:13:42,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:42,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:13:42,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:42,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:13:42,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:42,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 02:13:42,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:42,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:13:42,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:42,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 02:13:42,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:42,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-02-24 02:13:42,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:42,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-02-24 02:13:42,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:42,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-02-24 02:13:43,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:43,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-02-24 02:13:43,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:43,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 02:13:43,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:43,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:13:43,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:43,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:13:43,070 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:13:43,071 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [349958250] [2022-02-24 02:13:43,071 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [349958250] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:13:43,071 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:13:43,071 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-02-24 02:13:43,071 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614992474] [2022-02-24 02:13:43,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:13:43,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-24 02:13:43,071 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:13:43,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-24 02:13:43,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2022-02-24 02:13:43,072 INFO L87 Difference]: Start difference. First operand 361 states and 423 transitions. Second operand has 23 states, 23 states have (on average 3.652173913043478) internal successors, (84), 16 states have internal predecessors, (84), 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) [2022-02-24 02:13:45,145 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:13:50,565 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:13:51,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:13:51,280 INFO L93 Difference]: Finished difference Result 699 states and 834 transitions. [2022-02-24 02:13:51,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-24 02:13:51,280 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.652173913043478) internal successors, (84), 16 states have internal predecessors, (84), 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 114 [2022-02-24 02:13:51,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:13:51,282 INFO L225 Difference]: With dead ends: 699 [2022-02-24 02:13:51,282 INFO L226 Difference]: Without dead ends: 413 [2022-02-24 02:13:51,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=230, Invalid=1330, Unknown=0, NotChecked=0, Total=1560 [2022-02-24 02:13:51,283 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 329 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 1415 mSolverCounterSat, 217 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 1633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 1415 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-02-24 02:13:51,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [332 Valid, 595 Invalid, 1633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 1415 Invalid, 1 Unknown, 0 Unchecked, 7.2s Time] [2022-02-24 02:13:51,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2022-02-24 02:13:51,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 363. [2022-02-24 02:13:51,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 288 states have (on average 1.2118055555555556) internal successors, (349), 292 states have internal predecessors, (349), 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) [2022-02-24 02:13:51,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 425 transitions. [2022-02-24 02:13:51,420 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 425 transitions. Word has length 114 [2022-02-24 02:13:51,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:13:51,420 INFO L470 AbstractCegarLoop]: Abstraction has 363 states and 425 transitions. [2022-02-24 02:13:51,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.652173913043478) internal successors, (84), 16 states have internal predecessors, (84), 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) [2022-02-24 02:13:51,420 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 425 transitions. [2022-02-24 02:13:51,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-02-24 02:13:51,421 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:13:51,421 INFO L514 BasicCegarLoop]: trace histogram [13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:13:51,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-02-24 02:13:51,421 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:13:51,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:13:51,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1534440989, now seen corresponding path program 13 times [2022-02-24 02:13:51,421 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:13:51,421 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1380626955] [2022-02-24 02:13:51,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:13:51,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:13:51,437 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:13:51,437 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 02:13:51,437 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:13:51,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:51,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:13:51,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:51,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:13:51,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:51,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:13:51,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:51,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:13:51,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:51,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 02:13:52,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:52,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:13:52,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:52,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 02:13:52,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:52,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-02-24 02:13:52,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:52,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-02-24 02:13:52,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:52,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-02-24 02:13:52,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:52,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-02-24 02:13:52,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:52,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 02:13:52,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:52,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:13:52,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:52,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:13:52,451 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:13:52,451 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1380626955] [2022-02-24 02:13:52,451 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1380626955] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:13:52,451 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:13:52,451 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-02-24 02:13:52,451 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112079584] [2022-02-24 02:13:52,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:13:52,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-24 02:13:52,452 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:13:52,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-24 02:13:52,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2022-02-24 02:13:52,452 INFO L87 Difference]: Start difference. First operand 363 states and 425 transitions. Second operand has 24 states, 24 states have (on average 3.5416666666666665) internal successors, (85), 17 states have internal predecessors, (85), 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) [2022-02-24 02:13:55,554 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:13:57,574 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:13:59,441 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:14:00,763 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:14:02,779 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:14:05,322 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:14:07,343 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:14:09,361 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:14:11,384 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:14:12,506 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:14:17,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:14:17,703 INFO L93 Difference]: Finished difference Result 701 states and 836 transitions. [2022-02-24 02:14:17,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-24 02:14:17,703 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.5416666666666665) internal successors, (85), 17 states have internal predecessors, (85), 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 115 [2022-02-24 02:14:17,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:14:17,704 INFO L225 Difference]: With dead ends: 701 [2022-02-24 02:14:17,704 INFO L226 Difference]: Without dead ends: 415 [2022-02-24 02:14:17,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=243, Invalid=1479, Unknown=0, NotChecked=0, Total=1722 [2022-02-24 02:14:17,706 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 328 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 1621 mSolverCounterSat, 222 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 1850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 1621 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.2s IncrementalHoareTripleChecker+Time [2022-02-24 02:14:17,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 671 Invalid, 1850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 1621 Invalid, 7 Unknown, 0 Unchecked, 24.2s Time] [2022-02-24 02:14:17,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2022-02-24 02:14:17,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 365. [2022-02-24 02:14:17,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 290 states have (on average 1.210344827586207) internal successors, (351), 294 states have internal predecessors, (351), 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) [2022-02-24 02:14:17,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 427 transitions. [2022-02-24 02:14:17,845 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 427 transitions. Word has length 115 [2022-02-24 02:14:17,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:14:17,845 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 427 transitions. [2022-02-24 02:14:17,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.5416666666666665) internal successors, (85), 17 states have internal predecessors, (85), 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) [2022-02-24 02:14:17,845 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 427 transitions. [2022-02-24 02:14:17,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-02-24 02:14:17,846 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:14:17,846 INFO L514 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:14:17,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-02-24 02:14:17,846 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:14:17,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:14:17,846 INFO L85 PathProgramCache]: Analyzing trace with hash -786729583, now seen corresponding path program 14 times [2022-02-24 02:14:17,846 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:14:17,846 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1446364229] [2022-02-24 02:14:17,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:14:17,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:14:17,863 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:14:17,864 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 02:14:17,864 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:14:18,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:14:18,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:14:18,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:14:18,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:14:18,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:14:18,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:14:18,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:14:18,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:14:18,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:14:18,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 02:14:18,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:14:18,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:14:18,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:14:18,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 02:14:18,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:14:18,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-24 02:14:18,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:14:18,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-24 02:14:18,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:14:18,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-02-24 02:14:18,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:14:18,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-02-24 02:14:18,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:14:19,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 02:14:19,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:14:19,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:14:19,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:14:19,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:14:19,017 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:14:19,018 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1446364229] [2022-02-24 02:14:19,018 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1446364229] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:14:19,018 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:14:19,018 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-02-24 02:14:19,018 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898709747] [2022-02-24 02:14:19,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:14:19,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-24 02:14:19,018 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:14:19,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-24 02:14:19,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=529, Unknown=0, NotChecked=0, Total=600 [2022-02-24 02:14:19,019 INFO L87 Difference]: Start difference. First operand 365 states and 427 transitions. Second operand has 25 states, 25 states have (on average 3.44) internal successors, (86), 18 states have internal predecessors, (86), 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) [2022-02-24 02:14:20,888 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:14:22,909 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:14:24,927 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:14:26,946 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:14:28,963 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:14:30,983 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:14:33,001 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:14:34,104 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:14:36,119 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:14:38,135 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:14:40,160 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:14:42,176 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:14:44,194 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:14:46,215 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:14:53,412 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:14:54,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:14:54,427 INFO L93 Difference]: Finished difference Result 703 states and 838 transitions. [2022-02-24 02:14:54,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-24 02:14:54,434 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.44) internal successors, (86), 18 states have internal predecessors, (86), 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 116 [2022-02-24 02:14:54,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:14:54,436 INFO L225 Difference]: With dead ends: 703 [2022-02-24 02:14:54,436 INFO L226 Difference]: Without dead ends: 417 [2022-02-24 02:14:54,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=256, Invalid=1636, Unknown=0, NotChecked=0, Total=1892 [2022-02-24 02:14:54,437 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 271 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 1983 mSolverCounterSat, 179 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 2174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 1983 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.2s IncrementalHoareTripleChecker+Time [2022-02-24 02:14:54,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 783 Invalid, 2174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 1983 Invalid, 12 Unknown, 0 Unchecked, 34.2s Time] [2022-02-24 02:14:54,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2022-02-24 02:14:54,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 367. [2022-02-24 02:14:54,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 292 states have (on average 1.2089041095890412) internal successors, (353), 296 states have internal predecessors, (353), 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) [2022-02-24 02:14:54,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 429 transitions. [2022-02-24 02:14:54,574 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 429 transitions. Word has length 116 [2022-02-24 02:14:54,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:14:54,574 INFO L470 AbstractCegarLoop]: Abstraction has 367 states and 429 transitions. [2022-02-24 02:14:54,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.44) internal successors, (86), 18 states have internal predecessors, (86), 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) [2022-02-24 02:14:54,574 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 429 transitions. [2022-02-24 02:14:54,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-02-24 02:14:54,575 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:14:54,575 INFO L514 BasicCegarLoop]: trace histogram [15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:14:54,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-02-24 02:14:54,575 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:14:54,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:14:54,576 INFO L85 PathProgramCache]: Analyzing trace with hash 271426717, now seen corresponding path program 15 times [2022-02-24 02:14:54,576 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:14:54,576 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1896529835] [2022-02-24 02:14:54,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:14:54,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:14:54,604 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:14:54,604 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 02:14:54,604 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:14:54,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:14:54,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:14:54,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:14:54,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:14:54,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:14:54,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:14:54,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:14:54,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:14:54,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:14:54,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 02:14:54,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:14:54,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:14:54,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:14:54,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 02:14:55,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:14:55,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-02-24 02:14:55,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:14:55,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-02-24 02:14:55,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:14:55,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-02-24 02:14:55,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:14:55,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-24 02:14:55,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:14:55,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 02:14:55,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:14:55,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:14:55,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:14:55,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:14:55,481 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:14:55,481 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1896529835] [2022-02-24 02:14:55,481 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1896529835] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:14:55,481 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:14:55,481 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-02-24 02:14:55,481 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624072824] [2022-02-24 02:14:55,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:14:55,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-24 02:14:55,482 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:14:55,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-24 02:14:55,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=576, Unknown=0, NotChecked=0, Total=650 [2022-02-24 02:14:55,482 INFO L87 Difference]: Start difference. First operand 367 states and 429 transitions. Second operand has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 19 states have internal predecessors, (87), 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) [2022-02-24 02:14:56,764 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:14:58,785 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:15:00,797 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:15:02,814 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:15:04,602 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:15:06,626 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:15:08,643 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:15:12,200 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:15:12,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:15:12,751 INFO L93 Difference]: Finished difference Result 705 states and 840 transitions. [2022-02-24 02:15:12,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-24 02:15:12,751 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 19 states have internal predecessors, (87), 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 117 [2022-02-24 02:15:12,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:15:12,753 INFO L225 Difference]: With dead ends: 705 [2022-02-24 02:15:12,753 INFO L226 Difference]: Without dead ends: 419 [2022-02-24 02:15:12,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=269, Invalid=1801, Unknown=0, NotChecked=0, Total=2070 [2022-02-24 02:15:12,754 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 312 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 255 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:15:12,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 375 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 865 Invalid, 5 Unknown, 0 Unchecked, 16.1s Time] [2022-02-24 02:15:12,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2022-02-24 02:15:12,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 369. [2022-02-24 02:15:12,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 294 states have (on average 1.2074829931972788) internal successors, (355), 298 states have internal predecessors, (355), 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) [2022-02-24 02:15:12,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 431 transitions. [2022-02-24 02:15:12,906 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 431 transitions. Word has length 117 [2022-02-24 02:15:12,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:15:12,907 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 431 transitions. [2022-02-24 02:15:12,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 19 states have internal predecessors, (87), 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) [2022-02-24 02:15:12,907 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 431 transitions. [2022-02-24 02:15:12,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-02-24 02:15:12,907 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:15:12,907 INFO L514 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:15:12,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-02-24 02:15:12,908 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:15:12,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:15:12,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1285466351, now seen corresponding path program 16 times [2022-02-24 02:15:12,908 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:15:12,908 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [153120460] [2022-02-24 02:15:12,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:15:12,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:15:12,928 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:15:12,928 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 02:15:12,928 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:15:13,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:13,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:15:13,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:13,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:15:13,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:13,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:15:13,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:13,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:15:13,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:13,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 02:15:13,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:13,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:15:13,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:13,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 02:15:13,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:13,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-24 02:15:13,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:13,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-02-24 02:15:13,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:13,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-02-24 02:15:13,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:13,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-02-24 02:15:13,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:14,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 02:15:14,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:14,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:15:14,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:14,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:15:14,032 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:15:14,033 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [153120460] [2022-02-24 02:15:14,033 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [153120460] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:15:14,033 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:15:14,033 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-02-24 02:15:14,033 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003809120] [2022-02-24 02:15:14,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:15:14,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-24 02:15:14,033 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:15:14,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-24 02:15:14,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=625, Unknown=0, NotChecked=0, Total=702 [2022-02-24 02:15:14,034 INFO L87 Difference]: Start difference. First operand 369 states and 431 transitions. Second operand has 27 states, 27 states have (on average 3.259259259259259) internal successors, (88), 20 states have internal predecessors, (88), 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) [2022-02-24 02:15:16,133 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 [] [2022-02-24 02:15:22,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:15:22,041 INFO L93 Difference]: Finished difference Result 707 states and 842 transitions. [2022-02-24 02:15:22,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-24 02:15:22,041 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.259259259259259) internal successors, (88), 20 states have internal predecessors, (88), 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 118 [2022-02-24 02:15:22,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:15:22,043 INFO L225 Difference]: With dead ends: 707 [2022-02-24 02:15:22,043 INFO L226 Difference]: Without dead ends: 421 [2022-02-24 02:15:22,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=282, Invalid=1974, Unknown=0, NotChecked=0, Total=2256 [2022-02-24 02:15:22,044 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 200 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 1199 mSolverCounterSat, 155 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 1355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1199 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-02-24 02:15:22,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 498 Invalid, 1355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1199 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2022-02-24 02:15:22,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2022-02-24 02:15:22,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 371. [2022-02-24 02:15:22,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 296 states have (on average 1.2060810810810811) internal successors, (357), 300 states have internal predecessors, (357), 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) [2022-02-24 02:15:22,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 433 transitions. [2022-02-24 02:15:22,202 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 433 transitions. Word has length 118 [2022-02-24 02:15:22,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:15:22,202 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 433 transitions. [2022-02-24 02:15:22,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.259259259259259) internal successors, (88), 20 states have internal predecessors, (88), 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) [2022-02-24 02:15:22,202 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 433 transitions. [2022-02-24 02:15:22,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-02-24 02:15:22,203 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:15:22,203 INFO L514 BasicCegarLoop]: trace histogram [17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:15:22,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-02-24 02:15:22,203 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:15:22,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:15:22,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1990456093, now seen corresponding path program 17 times [2022-02-24 02:15:22,204 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:15:22,204 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2034376566] [2022-02-24 02:15:22,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:15:22,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:15:22,224 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:15:22,225 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 02:15:22,225 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:15:22,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:22,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:15:22,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:22,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:15:22,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:22,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:15:22,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:22,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:15:22,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:22,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 02:15:22,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:22,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:15:22,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:22,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 02:15:22,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:23,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-02-24 02:15:23,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:23,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-02-24 02:15:23,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:23,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-24 02:15:23,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:23,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-02-24 02:15:23,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:23,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 02:15:23,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:23,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:15:23,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:23,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:15:23,238 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:15:23,238 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2034376566] [2022-02-24 02:15:23,238 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2034376566] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:15:23,238 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:15:23,238 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-02-24 02:15:23,238 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372358561] [2022-02-24 02:15:23,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:15:23,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-24 02:15:23,239 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:15:23,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-24 02:15:23,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=676, Unknown=0, NotChecked=0, Total=756 [2022-02-24 02:15:23,240 INFO L87 Difference]: Start difference. First operand 371 states and 433 transitions. Second operand has 28 states, 28 states have (on average 3.1785714285714284) internal successors, (89), 21 states have internal predecessors, (89), 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) [2022-02-24 02:15:25,316 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:15:29,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:15:29,920 INFO L93 Difference]: Finished difference Result 709 states and 844 transitions. [2022-02-24 02:15:29,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-24 02:15:29,920 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.1785714285714284) internal successors, (89), 21 states have internal predecessors, (89), 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 119 [2022-02-24 02:15:29,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:15:29,922 INFO L225 Difference]: With dead ends: 709 [2022-02-24 02:15:29,922 INFO L226 Difference]: Without dead ends: 423 [2022-02-24 02:15:29,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=295, Invalid=2155, Unknown=0, NotChecked=0, Total=2450 [2022-02-24 02:15:29,923 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 200 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 1249 mSolverCounterSat, 157 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 1407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1249 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-02-24 02:15:29,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 481 Invalid, 1407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1249 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2022-02-24 02:15:29,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-02-24 02:15:30,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 373. [2022-02-24 02:15:30,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 298 states have (on average 1.2046979865771812) internal successors, (359), 302 states have internal predecessors, (359), 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) [2022-02-24 02:15:30,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 435 transitions. [2022-02-24 02:15:30,075 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 435 transitions. Word has length 119 [2022-02-24 02:15:30,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:15:30,075 INFO L470 AbstractCegarLoop]: Abstraction has 373 states and 435 transitions. [2022-02-24 02:15:30,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.1785714285714284) internal successors, (89), 21 states have internal predecessors, (89), 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) [2022-02-24 02:15:30,075 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 435 transitions. [2022-02-24 02:15:30,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-02-24 02:15:30,076 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:15:30,076 INFO L514 BasicCegarLoop]: trace histogram [18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:15:30,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-02-24 02:15:30,076 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:15:30,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:15:30,076 INFO L85 PathProgramCache]: Analyzing trace with hash 464836753, now seen corresponding path program 18 times [2022-02-24 02:15:30,076 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:15:30,076 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [491452220] [2022-02-24 02:15:30,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:15:30,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:15:30,096 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:15:30,096 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 02:15:30,096 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:15:30,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:30,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:15:30,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:30,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:15:30,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:30,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:15:30,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:30,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:15:30,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:30,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 02:15:30,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:30,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:15:30,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:30,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 02:15:30,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:31,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-24 02:15:31,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:31,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-02-24 02:15:31,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:31,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-02-24 02:15:31,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:31,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-02-24 02:15:31,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:31,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 02:15:31,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:31,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:15:31,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:31,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:15:31,287 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:15:31,287 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [491452220] [2022-02-24 02:15:31,287 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [491452220] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:15:31,287 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:15:31,287 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-02-24 02:15:31,287 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969582840] [2022-02-24 02:15:31,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:15:31,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-24 02:15:31,287 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:15:31,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-24 02:15:31,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=729, Unknown=0, NotChecked=0, Total=812 [2022-02-24 02:15:31,288 INFO L87 Difference]: Start difference. First operand 373 states and 435 transitions. Second operand has 29 states, 29 states have (on average 3.103448275862069) internal successors, (90), 22 states have internal predecessors, (90), 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) [2022-02-24 02:15:33,369 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 [] [2022-02-24 02:15:39,750 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:15:41,577 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:15:42,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:15:42,715 INFO L93 Difference]: Finished difference Result 711 states and 846 transitions. [2022-02-24 02:15:42,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-24 02:15:42,716 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.103448275862069) internal successors, (90), 22 states have internal predecessors, (90), 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 120 [2022-02-24 02:15:42,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:15:42,717 INFO L225 Difference]: With dead ends: 711 [2022-02-24 02:15:42,717 INFO L226 Difference]: Without dead ends: 425 [2022-02-24 02:15:42,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=308, Invalid=2344, Unknown=0, NotChecked=0, Total=2652 [2022-02-24 02:15:42,719 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 316 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 1525 mSolverCounterSat, 267 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 1793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 1525 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2022-02-24 02:15:42,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [319 Valid, 592 Invalid, 1793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 1525 Invalid, 1 Unknown, 0 Unchecked, 10.0s Time] [2022-02-24 02:15:42,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2022-02-24 02:15:42,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 375. [2022-02-24 02:15:42,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 300 states have (on average 1.2033333333333334) internal successors, (361), 304 states have internal predecessors, (361), 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) [2022-02-24 02:15:42,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 437 transitions. [2022-02-24 02:15:42,887 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 437 transitions. Word has length 120 [2022-02-24 02:15:42,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:15:42,887 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 437 transitions. [2022-02-24 02:15:42,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.103448275862069) internal successors, (90), 22 states have internal predecessors, (90), 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) [2022-02-24 02:15:42,888 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 437 transitions. [2022-02-24 02:15:42,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-02-24 02:15:42,888 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:15:42,888 INFO L514 BasicCegarLoop]: trace histogram [19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:15:42,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-02-24 02:15:42,889 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:15:42,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:15:42,889 INFO L85 PathProgramCache]: Analyzing trace with hash 415277469, now seen corresponding path program 19 times [2022-02-24 02:15:42,889 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:15:42,889 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1299964699] [2022-02-24 02:15:42,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:15:42,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:15:42,915 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:15:42,915 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 02:15:42,915 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:15:43,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:43,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:15:43,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:43,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:15:43,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:43,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:15:43,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:43,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:15:43,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:43,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 02:15:43,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:43,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:15:43,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:43,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 02:15:43,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:44,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-02-24 02:15:44,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:44,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-02-24 02:15:44,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:44,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-02-24 02:15:44,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:44,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-02-24 02:15:44,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:44,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 02:15:44,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:44,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:15:44,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:44,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:15:44,195 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:15:44,196 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1299964699] [2022-02-24 02:15:44,196 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1299964699] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:15:44,196 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:15:44,196 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-02-24 02:15:44,196 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521410797] [2022-02-24 02:15:44,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:15:44,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-24 02:15:44,196 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:15:44,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-24 02:15:44,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2022-02-24 02:15:44,197 INFO L87 Difference]: Start difference. First operand 375 states and 437 transitions. Second operand has 30 states, 30 states have (on average 3.033333333333333) internal successors, (91), 23 states have internal predecessors, (91), 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) [2022-02-24 02:15:46,287 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:15:51,276 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:15:55,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:15:55,268 INFO L93 Difference]: Finished difference Result 713 states and 848 transitions. [2022-02-24 02:15:55,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-24 02:15:55,269 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.033333333333333) internal successors, (91), 23 states have internal predecessors, (91), 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 121 [2022-02-24 02:15:55,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:15:55,270 INFO L225 Difference]: With dead ends: 713 [2022-02-24 02:15:55,270 INFO L226 Difference]: Without dead ends: 427 [2022-02-24 02:15:55,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=321, Invalid=2541, Unknown=0, NotChecked=0, Total=2862 [2022-02-24 02:15:55,272 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 258 mSDsluCounter, 782 mSDsCounter, 0 mSdLazyCounter, 2449 mSolverCounterSat, 219 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 2669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 2449 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-02-24 02:15:55,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 921 Invalid, 2669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 2449 Invalid, 1 Unknown, 0 Unchecked, 9.6s Time] [2022-02-24 02:15:55,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2022-02-24 02:15:55,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 377. [2022-02-24 02:15:55,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 302 states have (on average 1.2019867549668874) internal successors, (363), 306 states have internal predecessors, (363), 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) [2022-02-24 02:15:55,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 439 transitions. [2022-02-24 02:15:55,430 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 439 transitions. Word has length 121 [2022-02-24 02:15:55,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:15:55,431 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 439 transitions. [2022-02-24 02:15:55,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.033333333333333) internal successors, (91), 23 states have internal predecessors, (91), 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) [2022-02-24 02:15:55,431 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 439 transitions. [2022-02-24 02:15:55,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-02-24 02:15:55,432 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:15:55,432 INFO L514 BasicCegarLoop]: trace histogram [20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:15:55,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-02-24 02:15:55,432 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:15:55,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:15:55,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1121060335, now seen corresponding path program 20 times [2022-02-24 02:15:55,432 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:15:55,432 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [522977328] [2022-02-24 02:15:55,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:15:55,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:15:55,452 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:15:55,452 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 02:15:55,452 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:15:55,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:55,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:15:55,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:55,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:15:55,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:55,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:15:55,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:55,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:15:55,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:55,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 02:15:56,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:56,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:15:56,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:56,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 02:15:56,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:56,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-02-24 02:15:56,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:56,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-02-24 02:15:56,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:56,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-02-24 02:15:56,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:56,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-02-24 02:15:56,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:56,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 02:15:56,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:56,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:15:56,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:56,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:15:56,788 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:15:56,788 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [522977328] [2022-02-24 02:15:56,788 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [522977328] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:15:56,788 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:15:56,788 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-02-24 02:15:56,788 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867257757] [2022-02-24 02:15:56,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:15:56,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-24 02:15:56,789 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:15:56,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-24 02:15:56,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=841, Unknown=0, NotChecked=0, Total=930 [2022-02-24 02:15:56,789 INFO L87 Difference]: Start difference. First operand 377 states and 439 transitions. Second operand has 31 states, 31 states have (on average 2.967741935483871) internal successors, (92), 24 states have internal predecessors, (92), 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) [2022-02-24 02:15:58,879 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:16:03,695 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:16:06,013 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:16:09,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:16:09,174 INFO L93 Difference]: Finished difference Result 715 states and 850 transitions. [2022-02-24 02:16:09,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-24 02:16:09,175 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.967741935483871) internal successors, (92), 24 states have internal predecessors, (92), 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 122 [2022-02-24 02:16:09,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:16:09,176 INFO L225 Difference]: With dead ends: 715 [2022-02-24 02:16:09,176 INFO L226 Difference]: Without dead ends: 429 [2022-02-24 02:16:09,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=334, Invalid=2746, Unknown=0, NotChecked=0, Total=3080 [2022-02-24 02:16:09,178 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 382 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 2391 mSolverCounterSat, 304 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 2696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 304 IncrementalHoareTripleChecker+Valid, 2391 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2022-02-24 02:16:09,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [385 Valid, 862 Invalid, 2696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [304 Valid, 2391 Invalid, 1 Unknown, 0 Unchecked, 10.8s Time] [2022-02-24 02:16:09,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2022-02-24 02:16:09,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 379. [2022-02-24 02:16:09,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 304 states have (on average 1.200657894736842) internal successors, (365), 308 states have internal predecessors, (365), 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) [2022-02-24 02:16:09,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 441 transitions. [2022-02-24 02:16:09,341 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 441 transitions. Word has length 122 [2022-02-24 02:16:09,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:16:09,341 INFO L470 AbstractCegarLoop]: Abstraction has 379 states and 441 transitions. [2022-02-24 02:16:09,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.967741935483871) internal successors, (92), 24 states have internal predecessors, (92), 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) [2022-02-24 02:16:09,341 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 441 transitions. [2022-02-24 02:16:09,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-02-24 02:16:09,342 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:16:09,342 INFO L514 BasicCegarLoop]: trace histogram [21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:16:09,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-02-24 02:16:09,342 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:16:09,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:16:09,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1502892003, now seen corresponding path program 21 times [2022-02-24 02:16:09,342 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:16:09,342 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1369655798] [2022-02-24 02:16:09,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:16:09,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:16:09,365 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:16:09,365 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 02:16:09,365 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:16:09,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:09,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:16:09,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:09,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:16:09,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:09,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:16:09,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:09,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:16:09,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:09,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 02:16:09,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:09,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:16:09,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:09,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 02:16:09,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:10,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-24 02:16:10,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:10,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-02-24 02:16:10,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:10,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-02-24 02:16:10,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:10,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-02-24 02:16:10,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:10,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 02:16:10,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:10,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:16:10,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:10,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:16:10,623 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:16:10,623 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1369655798] [2022-02-24 02:16:10,623 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1369655798] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:16:10,623 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:16:10,623 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-02-24 02:16:10,623 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398094581] [2022-02-24 02:16:10,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:16:10,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-24 02:16:10,625 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:16:10,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-24 02:16:10,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=900, Unknown=0, NotChecked=0, Total=992 [2022-02-24 02:16:10,625 INFO L87 Difference]: Start difference. First operand 379 states and 441 transitions. Second operand has 32 states, 32 states have (on average 2.90625) internal successors, (93), 25 states have internal predecessors, (93), 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) [2022-02-24 02:16:12,720 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:16:21,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:16:21,803 INFO L93 Difference]: Finished difference Result 717 states and 852 transitions. [2022-02-24 02:16:21,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-24 02:16:21,803 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.90625) internal successors, (93), 25 states have internal predecessors, (93), 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 123 [2022-02-24 02:16:21,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:16:21,805 INFO L225 Difference]: With dead ends: 717 [2022-02-24 02:16:21,805 INFO L226 Difference]: Without dead ends: 431 [2022-02-24 02:16:21,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=347, Invalid=2959, Unknown=0, NotChecked=0, Total=3306 [2022-02-24 02:16:21,806 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 324 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 3086 mSolverCounterSat, 252 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 1097 SdHoareTripleChecker+Invalid, 3339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 3086 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-02-24 02:16:21,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [327 Valid, 1097 Invalid, 3339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 3086 Invalid, 1 Unknown, 0 Unchecked, 9.5s Time] [2022-02-24 02:16:21,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2022-02-24 02:16:21,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 381. [2022-02-24 02:16:21,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 306 states have (on average 1.1993464052287581) internal successors, (367), 310 states have internal predecessors, (367), 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) [2022-02-24 02:16:21,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 443 transitions. [2022-02-24 02:16:21,977 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 443 transitions. Word has length 123 [2022-02-24 02:16:21,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:16:21,977 INFO L470 AbstractCegarLoop]: Abstraction has 381 states and 443 transitions. [2022-02-24 02:16:21,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.90625) internal successors, (93), 25 states have internal predecessors, (93), 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) [2022-02-24 02:16:21,977 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 443 transitions. [2022-02-24 02:16:21,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-02-24 02:16:21,978 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:16:21,978 INFO L514 BasicCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:16:21,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-02-24 02:16:21,978 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:16:21,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:16:21,978 INFO L85 PathProgramCache]: Analyzing trace with hash -454771823, now seen corresponding path program 22 times [2022-02-24 02:16:21,979 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:16:21,979 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [987985142] [2022-02-24 02:16:21,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:16:21,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:16:22,001 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:16:22,002 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 02:16:22,002 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:16:22,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:22,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:16:22,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:22,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:16:22,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:22,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:16:22,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:22,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:16:22,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:22,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 02:16:22,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:22,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:16:22,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:22,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 02:16:22,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:23,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-02-24 02:16:23,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:23,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-24 02:16:23,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:23,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-02-24 02:16:23,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:23,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-02-24 02:16:23,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:23,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 02:16:23,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:23,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:16:23,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:23,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:16:23,240 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:16:23,240 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [987985142] [2022-02-24 02:16:23,240 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [987985142] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:16:23,240 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:16:23,240 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-02-24 02:16:23,240 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984483281] [2022-02-24 02:16:23,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:16:23,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-24 02:16:23,241 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:16:23,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-24 02:16:23,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=961, Unknown=0, NotChecked=0, Total=1056 [2022-02-24 02:16:23,242 INFO L87 Difference]: Start difference. First operand 381 states and 443 transitions. Second operand has 33 states, 33 states have (on average 2.8484848484848486) internal successors, (94), 26 states have internal predecessors, (94), 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) [2022-02-24 02:16:25,343 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:16:36,674 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:16:38,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:16:38,754 INFO L93 Difference]: Finished difference Result 719 states and 854 transitions. [2022-02-24 02:16:38,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-24 02:16:38,755 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.8484848484848486) internal successors, (94), 26 states have internal predecessors, (94), 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 124 [2022-02-24 02:16:38,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:16:38,756 INFO L225 Difference]: With dead ends: 719 [2022-02-24 02:16:38,756 INFO L226 Difference]: Without dead ends: 433 [2022-02-24 02:16:38,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=360, Invalid=3180, Unknown=0, NotChecked=0, Total=3540 [2022-02-24 02:16:38,758 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 258 mSDsluCounter, 1111 mSDsCounter, 0 mSdLazyCounter, 3469 mSolverCounterSat, 231 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 3701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 3469 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.8s IncrementalHoareTripleChecker+Time [2022-02-24 02:16:38,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 1250 Invalid, 3701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 3469 Invalid, 1 Unknown, 0 Unchecked, 13.8s Time] [2022-02-24 02:16:38,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2022-02-24 02:16:38,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 383. [2022-02-24 02:16:38,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 308 states have (on average 1.198051948051948) internal successors, (369), 312 states have internal predecessors, (369), 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) [2022-02-24 02:16:38,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 445 transitions. [2022-02-24 02:16:38,931 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 445 transitions. Word has length 124 [2022-02-24 02:16:38,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:16:38,931 INFO L470 AbstractCegarLoop]: Abstraction has 383 states and 445 transitions. [2022-02-24 02:16:38,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.8484848484848486) internal successors, (94), 26 states have internal predecessors, (94), 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) [2022-02-24 02:16:38,932 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 445 transitions. [2022-02-24 02:16:38,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-02-24 02:16:38,932 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:16:38,932 INFO L514 BasicCegarLoop]: trace histogram [23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:16:38,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-02-24 02:16:38,933 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:16:38,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:16:38,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1972182685, now seen corresponding path program 23 times [2022-02-24 02:16:38,933 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:16:38,933 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1072973509] [2022-02-24 02:16:38,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:16:38,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:16:38,953 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:16:38,953 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 02:16:38,953 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:16:39,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:39,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:16:39,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:39,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:16:39,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:39,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:16:39,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:39,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:16:39,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:39,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 02:16:39,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:39,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:16:39,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:39,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 02:16:39,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:40,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-02-24 02:16:40,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:40,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-02-24 02:16:40,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:40,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-02-24 02:16:40,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:40,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-24 02:16:40,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:40,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 02:16:40,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:40,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:16:40,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:40,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:16:40,513 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:16:40,513 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1072973509] [2022-02-24 02:16:40,513 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1072973509] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:16:40,513 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:16:40,513 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-02-24 02:16:40,513 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890751289] [2022-02-24 02:16:40,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:16:40,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-24 02:16:40,513 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:16:40,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-24 02:16:40,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1024, Unknown=0, NotChecked=0, Total=1122 [2022-02-24 02:16:40,514 INFO L87 Difference]: Start difference. First operand 383 states and 445 transitions. Second operand has 34 states, 34 states have (on average 2.7941176470588234) internal successors, (95), 27 states have internal predecessors, (95), 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) [2022-02-24 02:16:42,269 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:16:44,288 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:16:46,306 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:16:48,328 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:16:50,344 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:16:52,367 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:16:54,385 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:16:56,403 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:17:01,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:17:01,362 INFO L93 Difference]: Finished difference Result 721 states and 856 transitions. [2022-02-24 02:17:01,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-24 02:17:01,363 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.7941176470588234) internal successors, (95), 27 states have internal predecessors, (95), 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 125 [2022-02-24 02:17:01,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:17:01,364 INFO L225 Difference]: With dead ends: 721 [2022-02-24 02:17:01,364 INFO L226 Difference]: Without dead ends: 435 [2022-02-24 02:17:01,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=373, Invalid=3409, Unknown=0, NotChecked=0, Total=3782 [2022-02-24 02:17:01,365 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 142 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 1607 mSolverCounterSat, 118 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 1732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1607 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:17:01,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 481 Invalid, 1732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1607 Invalid, 7 Unknown, 0 Unchecked, 19.1s Time] [2022-02-24 02:17:01,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2022-02-24 02:17:01,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 385. [2022-02-24 02:17:01,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 310 states have (on average 1.196774193548387) internal successors, (371), 314 states have internal predecessors, (371), 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) [2022-02-24 02:17:01,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 447 transitions. [2022-02-24 02:17:01,545 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 447 transitions. Word has length 125 [2022-02-24 02:17:01,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:17:01,545 INFO L470 AbstractCegarLoop]: Abstraction has 385 states and 447 transitions. [2022-02-24 02:17:01,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.7941176470588234) internal successors, (95), 27 states have internal predecessors, (95), 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) [2022-02-24 02:17:01,545 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 447 transitions. [2022-02-24 02:17:01,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-02-24 02:17:01,546 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:17:01,546 INFO L514 BasicCegarLoop]: trace histogram [24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:17:01,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-02-24 02:17:01,546 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:17:01,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:17:01,547 INFO L85 PathProgramCache]: Analyzing trace with hash -101638895, now seen corresponding path program 24 times [2022-02-24 02:17:01,547 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:17:01,547 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [355850252] [2022-02-24 02:17:01,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:17:01,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:17:01,568 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:17:01,568 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 02:17:01,568 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:17:01,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:02,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:17:02,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:02,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:17:02,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:02,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:17:02,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:02,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:17:02,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:02,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 02:17:02,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:02,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:17:02,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:02,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 02:17:02,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:02,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-24 02:17:02,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:02,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-02-24 02:17:02,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:02,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-02-24 02:17:02,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:03,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-02-24 02:17:03,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:03,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 02:17:03,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:03,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:17:03,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:03,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:17:03,059 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:17:03,059 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [355850252] [2022-02-24 02:17:03,059 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [355850252] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:17:03,059 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:17:03,059 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-02-24 02:17:03,059 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654626820] [2022-02-24 02:17:03,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:17:03,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-24 02:17:03,060 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:17:03,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-24 02:17:03,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1089, Unknown=0, NotChecked=0, Total=1190 [2022-02-24 02:17:03,060 INFO L87 Difference]: Start difference. First operand 385 states and 447 transitions. Second operand has 35 states, 35 states have (on average 2.742857142857143) internal successors, (96), 28 states have internal predecessors, (96), 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) [2022-02-24 02:17:05,150 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:17:13,350 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:17:14,652 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:17:17,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:17:17,263 INFO L93 Difference]: Finished difference Result 723 states and 858 transitions. [2022-02-24 02:17:17,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-24 02:17:17,263 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.742857142857143) internal successors, (96), 28 states have internal predecessors, (96), 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 126 [2022-02-24 02:17:17,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:17:17,265 INFO L225 Difference]: With dead ends: 723 [2022-02-24 02:17:17,265 INFO L226 Difference]: Without dead ends: 437 [2022-02-24 02:17:17,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=386, Invalid=3646, Unknown=0, NotChecked=0, Total=4032 [2022-02-24 02:17:17,266 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 316 mSDsluCounter, 876 mSDsCounter, 0 mSdLazyCounter, 2941 mSolverCounterSat, 297 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 1015 SdHoareTripleChecker+Invalid, 3239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 297 IncrementalHoareTripleChecker+Valid, 2941 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2022-02-24 02:17:17,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [319 Valid, 1015 Invalid, 3239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [297 Valid, 2941 Invalid, 1 Unknown, 0 Unchecked, 12.2s Time] [2022-02-24 02:17:17,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-02-24 02:17:17,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 387. [2022-02-24 02:17:17,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 312 states have (on average 1.1955128205128205) internal successors, (373), 316 states have internal predecessors, (373), 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) [2022-02-24 02:17:17,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 449 transitions. [2022-02-24 02:17:17,445 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 449 transitions. Word has length 126 [2022-02-24 02:17:17,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:17:17,445 INFO L470 AbstractCegarLoop]: Abstraction has 387 states and 449 transitions. [2022-02-24 02:17:17,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.742857142857143) internal successors, (96), 28 states have internal predecessors, (96), 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) [2022-02-24 02:17:17,445 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 449 transitions. [2022-02-24 02:17:17,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-02-24 02:17:17,446 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:17:17,446 INFO L514 BasicCegarLoop]: trace histogram [25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:17:17,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-02-24 02:17:17,446 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:17:17,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:17:17,446 INFO L85 PathProgramCache]: Analyzing trace with hash 34401565, now seen corresponding path program 25 times [2022-02-24 02:17:17,446 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:17:17,447 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [204493022] [2022-02-24 02:17:17,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:17:17,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:17:17,469 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:17:17,470 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 02:17:17,470 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:17:17,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:18,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:17:18,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:18,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:17:18,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:18,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:17:18,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:18,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:17:18,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:18,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 02:17:18,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:18,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:17:18,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:18,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 02:17:18,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:19,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-02-24 02:17:19,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:19,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-02-24 02:17:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:19,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-24 02:17:19,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:19,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-02-24 02:17:19,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:19,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 02:17:19,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:19,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:17:19,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:19,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:17:19,171 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:17:19,171 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [204493022] [2022-02-24 02:17:19,171 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [204493022] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:17:19,171 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:17:19,171 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-02-24 02:17:19,171 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762752791] [2022-02-24 02:17:19,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:17:19,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-24 02:17:19,172 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:17:19,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-24 02:17:19,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1156, Unknown=0, NotChecked=0, Total=1260 [2022-02-24 02:17:19,172 INFO L87 Difference]: Start difference. First operand 387 states and 449 transitions. Second operand has 36 states, 36 states have (on average 2.6944444444444446) internal successors, (97), 29 states have internal predecessors, (97), 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) [2022-02-24 02:17:21,266 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:17:27,637 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:17:30,433 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:17:32,679 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:17:33,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:17:33,960 INFO L93 Difference]: Finished difference Result 725 states and 860 transitions. [2022-02-24 02:17:33,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-24 02:17:33,961 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.6944444444444446) internal successors, (97), 29 states have internal predecessors, (97), 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 127 [2022-02-24 02:17:33,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:17:33,962 INFO L225 Difference]: With dead ends: 725 [2022-02-24 02:17:33,962 INFO L226 Difference]: Without dead ends: 439 [2022-02-24 02:17:33,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=399, Invalid=3891, Unknown=0, NotChecked=0, Total=4290 [2022-02-24 02:17:33,963 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 270 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 2947 mSolverCounterSat, 208 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 3157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 2947 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2022-02-24 02:17:33,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 968 Invalid, 3157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 2947 Invalid, 2 Unknown, 0 Unchecked, 12.8s Time] [2022-02-24 02:17:33,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2022-02-24 02:17:34,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 389. [2022-02-24 02:17:34,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 314 states have (on average 1.194267515923567) internal successors, (375), 318 states have internal predecessors, (375), 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) [2022-02-24 02:17:34,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 451 transitions. [2022-02-24 02:17:34,148 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 451 transitions. Word has length 127 [2022-02-24 02:17:34,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:17:34,148 INFO L470 AbstractCegarLoop]: Abstraction has 389 states and 451 transitions. [2022-02-24 02:17:34,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.6944444444444446) internal successors, (97), 29 states have internal predecessors, (97), 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) [2022-02-24 02:17:34,148 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 451 transitions. [2022-02-24 02:17:34,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-02-24 02:17:34,149 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:17:34,149 INFO L514 BasicCegarLoop]: trace histogram [26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:17:34,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-02-24 02:17:34,149 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:17:34,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:17:34,149 INFO L85 PathProgramCache]: Analyzing trace with hash -43311471, now seen corresponding path program 26 times [2022-02-24 02:17:34,149 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:17:34,150 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194731492] [2022-02-24 02:17:34,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:17:34,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:17:34,174 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:17:34,175 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 02:17:34,175 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:17:34,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:34,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:17:34,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:34,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:17:34,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:34,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:17:34,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:34,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:17:34,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:34,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 02:17:34,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:34,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:17:34,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:34,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 02:17:35,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:35,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-24 02:17:35,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:35,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-02-24 02:17:35,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:35,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-02-24 02:17:35,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:35,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-02-24 02:17:35,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:35,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 02:17:35,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:35,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:17:35,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:35,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:17:35,868 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:17:35,868 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1194731492] [2022-02-24 02:17:35,868 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1194731492] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:17:35,869 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:17:35,869 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-02-24 02:17:35,869 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450979661] [2022-02-24 02:17:35,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:17:35,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-24 02:17:35,869 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:17:35,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-24 02:17:35,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1225, Unknown=0, NotChecked=0, Total=1332 [2022-02-24 02:17:35,870 INFO L87 Difference]: Start difference. First operand 389 states and 451 transitions. Second operand has 37 states, 37 states have (on average 2.6486486486486487) internal successors, (98), 30 states have internal predecessors, (98), 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) [2022-02-24 02:17:37,117 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:17:39,135 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:17:41,151 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:17:43,169 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:17:45,918 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:17:47,938 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:17:49,958 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:17:51,979 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:17:53,994 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:17:56,016 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:17:58,034 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:18:00,054 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:18:02,070 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:18:11,439 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:18:12,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:18:12,334 INFO L93 Difference]: Finished difference Result 727 states and 862 transitions. [2022-02-24 02:18:12,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-24 02:18:12,334 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.6486486486486487) internal successors, (98), 30 states have internal predecessors, (98), 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 128 [2022-02-24 02:18:12,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:18:12,336 INFO L225 Difference]: With dead ends: 727 [2022-02-24 02:18:12,336 INFO L226 Difference]: Without dead ends: 441 [2022-02-24 02:18:12,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 556 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=412, Invalid=4144, Unknown=0, NotChecked=0, Total=4556 [2022-02-24 02:18:12,337 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 258 mSDsluCounter, 703 mSDsCounter, 0 mSdLazyCounter, 2619 mSolverCounterSat, 247 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 2878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 2619 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.5s IncrementalHoareTripleChecker+Time [2022-02-24 02:18:12,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 842 Invalid, 2878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 2619 Invalid, 12 Unknown, 0 Unchecked, 34.5s Time] [2022-02-24 02:18:12,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-02-24 02:18:12,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 391. [2022-02-24 02:18:12,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 316 states have (on average 1.1930379746835442) internal successors, (377), 320 states have internal predecessors, (377), 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) [2022-02-24 02:18:12,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 453 transitions. [2022-02-24 02:18:12,525 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 453 transitions. Word has length 128 [2022-02-24 02:18:12,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:18:12,525 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 453 transitions. [2022-02-24 02:18:12,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.6486486486486487) internal successors, (98), 30 states have internal predecessors, (98), 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) [2022-02-24 02:18:12,526 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 453 transitions. [2022-02-24 02:18:12,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-02-24 02:18:12,526 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:18:12,526 INFO L514 BasicCegarLoop]: trace histogram [27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:18:12,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-02-24 02:18:12,526 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:18:12,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:18:12,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1842551709, now seen corresponding path program 27 times [2022-02-24 02:18:12,527 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:18:12,527 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [528897803] [2022-02-24 02:18:12,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:18:12,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:18:12,548 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:18:12,548 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 02:18:12,548 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:18:13,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:18:13,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:18:13,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:18:13,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:18:13,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:18:13,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:18:13,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:18:13,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:18:13,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:18:13,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 02:18:13,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:18:13,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:18:13,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:18:13,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 02:18:13,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:18:14,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-02-24 02:18:14,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:18:14,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-02-24 02:18:14,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:18:14,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-02-24 02:18:14,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:18:14,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-02-24 02:18:14,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:18:14,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 02:18:14,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:18:14,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:18:14,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:18:14,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:18:14,697 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:18:14,697 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [528897803] [2022-02-24 02:18:14,697 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [528897803] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:18:14,697 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:18:14,697 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2022-02-24 02:18:14,697 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984763107] [2022-02-24 02:18:14,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:18:14,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-24 02:18:14,697 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:18:14,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-24 02:18:14,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1296, Unknown=0, NotChecked=0, Total=1406 [2022-02-24 02:18:14,698 INFO L87 Difference]: Start difference. First operand 391 states and 453 transitions. Second operand has 38 states, 38 states have (on average 2.6052631578947367) internal successors, (99), 31 states have internal predecessors, (99), 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) [2022-02-24 02:18:16,197 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:18:18,214 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:18:20,231 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:18:22,253 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:18:24,270 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:18:26,288 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:18:28,309 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:18:30,330 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:18:32,349 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:18:34,368 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:18:36,390 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:18:38,413 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:18:40,435 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:18:42,460 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:18:43,605 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:18:45,622 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:18:47,641 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:18:49,664 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:18:51,686 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:18:53,705 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:18:54,777 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:18:56,793 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:18:58,812 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:19:00,831 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:19:02,846 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:19:04,863 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:19:06,883 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:19:08,907 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:19:10,926 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:19:12,948 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 [] [2022-02-24 02:19:29,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:19:29,021 INFO L93 Difference]: Finished difference Result 729 states and 864 transitions. [2022-02-24 02:19:29,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-24 02:19:29,022 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.6052631578947367) internal successors, (99), 31 states have internal predecessors, (99), 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 129 [2022-02-24 02:19:29,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:19:29,023 INFO L225 Difference]: With dead ends: 729 [2022-02-24 02:19:29,023 INFO L226 Difference]: Without dead ends: 443 [2022-02-24 02:19:29,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 590 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=425, Invalid=4405, Unknown=0, NotChecked=0, Total=4830 [2022-02-24 02:19:29,024 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 213 mSDsluCounter, 1381 mSDsCounter, 0 mSdLazyCounter, 4610 mSolverCounterSat, 158 mSolverCounterUnsat, 27 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 71.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 4795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 4610 IncrementalHoareTripleChecker+Invalid, 27 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 72.2s IncrementalHoareTripleChecker+Time [2022-02-24 02:19:29,024 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 1520 Invalid, 4795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 4610 Invalid, 27 Unknown, 0 Unchecked, 72.2s Time] [2022-02-24 02:19:29,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2022-02-24 02:19:29,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 393. [2022-02-24 02:19:29,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 318 states have (on average 1.1918238993710693) internal successors, (379), 322 states have internal predecessors, (379), 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) [2022-02-24 02:19:29,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 455 transitions. [2022-02-24 02:19:29,205 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 455 transitions. Word has length 129 [2022-02-24 02:19:29,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:19:29,206 INFO L470 AbstractCegarLoop]: Abstraction has 393 states and 455 transitions. [2022-02-24 02:19:29,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.6052631578947367) internal successors, (99), 31 states have internal predecessors, (99), 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) [2022-02-24 02:19:29,206 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 455 transitions. [2022-02-24 02:19:29,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-02-24 02:19:29,206 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:19:29,207 INFO L514 BasicCegarLoop]: trace histogram [28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:19:29,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-02-24 02:19:29,207 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:19:29,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:19:29,207 INFO L85 PathProgramCache]: Analyzing trace with hash 174768145, now seen corresponding path program 28 times [2022-02-24 02:19:29,207 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:19:29,207 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908518468] [2022-02-24 02:19:29,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:19:29,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:19:29,234 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:19:29,234 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 02:19:29,234 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:19:29,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:19:29,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:19:29,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:19:29,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:19:29,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:19:29,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:19:29,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:19:29,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:19:29,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:19:29,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 02:19:29,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:19:29,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:19:29,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:19:29,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 02:19:29,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:19:30,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-02-24 02:19:30,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:19:30,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-02-24 02:19:30,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:19:30,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-02-24 02:19:30,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:19:30,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-02-24 02:19:30,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:19:30,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 02:19:30,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:19:30,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:19:30,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:19:30,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:19:30,665 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:19:30,665 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1908518468] [2022-02-24 02:19:30,666 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1908518468] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:19:30,666 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:19:30,666 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2022-02-24 02:19:30,666 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229110179] [2022-02-24 02:19:30,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:19:30,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-24 02:19:30,666 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:19:30,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-24 02:19:30,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1369, Unknown=0, NotChecked=0, Total=1482 [2022-02-24 02:19:30,667 INFO L87 Difference]: Start difference. First operand 393 states and 455 transitions. Second operand has 39 states, 39 states have (on average 2.5641025641025643) internal successors, (100), 32 states have internal predecessors, (100), 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) [2022-02-24 02:19:32,075 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:19:34,101 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:19:36,117 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:19:39,073 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:19:41,088 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:19:43,106 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:19:45,122 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:19:47,143 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:19:49,159 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:19:52,051 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:19:54,067 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:19:56,081 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:19:58,097 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:20:00,114 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:20:02,135 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:20:04,151 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:20:06,107 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:20:08,133 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:20:10,148 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:20:12,170 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:20:20,468 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:20:23,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:20:23,454 INFO L93 Difference]: Finished difference Result 731 states and 866 transitions. [2022-02-24 02:20:23,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-24 02:20:23,455 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.5641025641025643) internal successors, (100), 32 states have internal predecessors, (100), 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 130 [2022-02-24 02:20:23,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:20:23,456 INFO L225 Difference]: With dead ends: 731 [2022-02-24 02:20:23,456 INFO L226 Difference]: Without dead ends: 445 [2022-02-24 02:20:23,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=438, Invalid=4674, Unknown=0, NotChecked=0, Total=5112 [2022-02-24 02:20:23,457 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 270 mSDsluCounter, 1064 mSDsCounter, 0 mSdLazyCounter, 3753 mSolverCounterSat, 218 mSolverCounterUnsat, 18 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 3989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 3753 IncrementalHoareTripleChecker+Invalid, 18 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.6s IncrementalHoareTripleChecker+Time [2022-02-24 02:20:23,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 1203 Invalid, 3989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 3753 Invalid, 18 Unknown, 0 Unchecked, 50.6s Time] [2022-02-24 02:20:23,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2022-02-24 02:20:23,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 395. [2022-02-24 02:20:23,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 320 states have (on average 1.190625) internal successors, (381), 324 states have internal predecessors, (381), 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) [2022-02-24 02:20:23,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 457 transitions. [2022-02-24 02:20:23,642 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 457 transitions. Word has length 130 [2022-02-24 02:20:23,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:20:23,643 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 457 transitions. [2022-02-24 02:20:23,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.5641025641025643) internal successors, (100), 32 states have internal predecessors, (100), 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) [2022-02-24 02:20:23,643 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 457 transitions. [2022-02-24 02:20:23,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-02-24 02:20:23,644 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:20:23,644 INFO L514 BasicCegarLoop]: trace histogram [29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:20:23,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-02-24 02:20:23,644 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:20:23,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:20:23,644 INFO L85 PathProgramCache]: Analyzing trace with hash 13085213, now seen corresponding path program 29 times [2022-02-24 02:20:23,644 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:20:23,644 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [22130502] [2022-02-24 02:20:23,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:20:23,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:20:23,673 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:20:23,673 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 02:20:23,673 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:20:24,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:20:24,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:20:24,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:20:24,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:20:24,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:20:24,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:20:24,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:20:24,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:20:24,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:20:24,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 02:20:24,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:20:24,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:20:24,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:20:24,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 02:20:24,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:20:25,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-02-24 02:20:25,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:20:25,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-02-24 02:20:25,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:20:25,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-02-24 02:20:25,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:20:25,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-02-24 02:20:25,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:20:25,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 02:20:25,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:20:25,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:20:25,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:20:25,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:20:25,748 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:20:25,748 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [22130502] [2022-02-24 02:20:25,748 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [22130502] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:20:25,748 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:20:25,748 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2022-02-24 02:20:25,748 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111756496] [2022-02-24 02:20:25,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:20:25,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-24 02:20:25,748 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:20:25,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-24 02:20:25,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1444, Unknown=0, NotChecked=0, Total=1560 [2022-02-24 02:20:25,749 INFO L87 Difference]: Start difference. First operand 395 states and 457 transitions. Second operand has 40 states, 40 states have (on average 2.525) internal successors, (101), 33 states have internal predecessors, (101), 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) [2022-02-24 02:20:27,854 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:20:37,056 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:20:42,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:20:42,118 INFO L93 Difference]: Finished difference Result 733 states and 868 transitions. [2022-02-24 02:20:42,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-24 02:20:42,119 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.525) internal successors, (101), 33 states have internal predecessors, (101), 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 131 [2022-02-24 02:20:42,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:20:42,120 INFO L225 Difference]: With dead ends: 733 [2022-02-24 02:20:42,120 INFO L226 Difference]: Without dead ends: 447 [2022-02-24 02:20:42,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 661 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=451, Invalid=4951, Unknown=0, NotChecked=0, Total=5402 [2022-02-24 02:20:42,121 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 258 mSDsluCounter, 1252 mSDsCounter, 0 mSdLazyCounter, 4239 mSolverCounterSat, 259 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 1391 SdHoareTripleChecker+Invalid, 4499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 4239 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:20:42,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 1391 Invalid, 4499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 4239 Invalid, 1 Unknown, 0 Unchecked, 14.1s Time] [2022-02-24 02:20:42,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2022-02-24 02:20:42,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 397. [2022-02-24 02:20:42,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 322 states have (on average 1.18944099378882) internal successors, (383), 326 states have internal predecessors, (383), 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) [2022-02-24 02:20:42,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 459 transitions. [2022-02-24 02:20:42,321 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 459 transitions. Word has length 131 [2022-02-24 02:20:42,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:20:42,321 INFO L470 AbstractCegarLoop]: Abstraction has 397 states and 459 transitions. [2022-02-24 02:20:42,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.525) internal successors, (101), 33 states have internal predecessors, (101), 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) [2022-02-24 02:20:42,321 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 459 transitions. [2022-02-24 02:20:42,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-02-24 02:20:42,322 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:20:42,322 INFO L514 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:20:42,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-02-24 02:20:42,322 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:20:42,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:20:42,322 INFO L85 PathProgramCache]: Analyzing trace with hash -704118383, now seen corresponding path program 30 times [2022-02-24 02:20:42,322 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:20:42,322 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1668403450] [2022-02-24 02:20:42,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:20:42,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:20:42,351 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:20:42,351 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 02:20:42,351 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:20:42,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:20:43,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:20:43,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:20:43,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:20:43,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:20:43,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:20:43,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:20:43,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:20:43,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:20:43,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 02:20:43,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:20:43,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:20:43,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:20:43,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 02:20:43,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:20:44,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-02-24 02:20:44,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:20:44,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-24 02:20:44,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:20:44,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-02-24 02:20:44,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:20:44,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-02-24 02:20:44,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:20:44,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 02:20:44,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:20:44,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:20:44,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:20:44,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:20:44,329 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:20:44,329 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1668403450] [2022-02-24 02:20:44,329 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1668403450] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:20:44,329 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:20:44,329 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2022-02-24 02:20:44,329 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643285008] [2022-02-24 02:20:44,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:20:44,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-24 02:20:44,329 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:20:44,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-24 02:20:44,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1521, Unknown=0, NotChecked=0, Total=1640 [2022-02-24 02:20:44,330 INFO L87 Difference]: Start difference. First operand 397 states and 459 transitions. Second operand has 41 states, 41 states have (on average 2.4878048780487805) internal successors, (102), 34 states have internal predecessors, (102), 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) [2022-02-24 02:20:45,886 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:20:47,904 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:20:49,922 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:20:51,944 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:20:53,963 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:20:55,982 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:20:57,999 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:21:00,020 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:21:02,036 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:21:04,057 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:21:06,078 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 [] [2022-02-24 02:21:13,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:21:13,259 INFO L93 Difference]: Finished difference Result 735 states and 870 transitions. [2022-02-24 02:21:13,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-24 02:21:13,260 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.4878048780487805) internal successors, (102), 34 states have internal predecessors, (102), 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 132 [2022-02-24 02:21:13,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:21:13,261 INFO L225 Difference]: With dead ends: 735 [2022-02-24 02:21:13,261 INFO L226 Difference]: Without dead ends: 449 [2022-02-24 02:21:13,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 698 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=464, Invalid=5236, Unknown=0, NotChecked=0, Total=5700 [2022-02-24 02:21:13,262 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 329 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 2370 mSolverCounterSat, 291 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 2671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 2370 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.5s IncrementalHoareTripleChecker+Time [2022-02-24 02:21:13,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [332 Valid, 642 Invalid, 2671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [291 Valid, 2370 Invalid, 10 Unknown, 0 Unchecked, 26.5s Time] [2022-02-24 02:21:13,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2022-02-24 02:21:13,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 399. [2022-02-24 02:21:13,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 324 states have (on average 1.1882716049382716) internal successors, (385), 328 states have internal predecessors, (385), 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) [2022-02-24 02:21:13,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 461 transitions. [2022-02-24 02:21:13,456 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 461 transitions. Word has length 132 [2022-02-24 02:21:13,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:21:13,456 INFO L470 AbstractCegarLoop]: Abstraction has 399 states and 461 transitions. [2022-02-24 02:21:13,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.4878048780487805) internal successors, (102), 34 states have internal predecessors, (102), 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) [2022-02-24 02:21:13,457 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 461 transitions. [2022-02-24 02:21:13,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-02-24 02:21:13,457 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:21:13,457 INFO L514 BasicCegarLoop]: trace histogram [31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:21:13,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-02-24 02:21:13,458 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:21:13,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:21:13,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1462593379, now seen corresponding path program 31 times [2022-02-24 02:21:13,458 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:21:13,458 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2021804999] [2022-02-24 02:21:13,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:21:13,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:21:13,497 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:21:13,497 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 02:21:13,497 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:21:13,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:21:13,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:21:13,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:21:13,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:21:13,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:21:13,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:21:13,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:21:13,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:21:13,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:21:13,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 02:21:13,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:21:13,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:21:13,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:21:13,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 02:21:14,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:21:14,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-02-24 02:21:14,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:21:15,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-02-24 02:21:15,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:21:15,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-02-24 02:21:15,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:21:15,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-24 02:21:15,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:21:15,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 02:21:15,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:21:15,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:21:15,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:21:15,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:21:15,110 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:21:15,110 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2021804999] [2022-02-24 02:21:15,110 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2021804999] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:21:15,110 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:21:15,110 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2022-02-24 02:21:15,110 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821855156] [2022-02-24 02:21:15,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:21:15,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-02-24 02:21:15,111 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:21:15,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-02-24 02:21:15,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1600, Unknown=0, NotChecked=0, Total=1722 [2022-02-24 02:21:15,111 INFO L87 Difference]: Start difference. First operand 399 states and 461 transitions. Second operand has 42 states, 42 states have (on average 2.4523809523809526) internal successors, (103), 35 states have internal predecessors, (103), 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) [2022-02-24 02:21:17,225 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:21:31,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:21:31,261 INFO L93 Difference]: Finished difference Result 737 states and 872 transitions. [2022-02-24 02:21:31,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-24 02:21:31,262 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.4523809523809526) internal successors, (103), 35 states have internal predecessors, (103), 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 133 [2022-02-24 02:21:31,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:21:31,263 INFO L225 Difference]: With dead ends: 737 [2022-02-24 02:21:31,263 INFO L226 Difference]: Without dead ends: 451 [2022-02-24 02:21:31,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 736 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=477, Invalid=5529, Unknown=0, NotChecked=0, Total=6006 [2022-02-24 02:21:31,264 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 386 mSDsluCounter, 1316 mSDsCounter, 0 mSdLazyCounter, 4552 mSolverCounterSat, 359 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 1455 SdHoareTripleChecker+Invalid, 4912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 359 IncrementalHoareTripleChecker+Valid, 4552 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2022-02-24 02:21:31,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [389 Valid, 1455 Invalid, 4912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [359 Valid, 4552 Invalid, 1 Unknown, 0 Unchecked, 13.5s Time] [2022-02-24 02:21:31,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2022-02-24 02:21:31,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 401. [2022-02-24 02:21:31,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 326 states have (on average 1.187116564417178) internal successors, (387), 330 states have internal predecessors, (387), 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) [2022-02-24 02:21:31,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 463 transitions. [2022-02-24 02:21:31,471 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 463 transitions. Word has length 133 [2022-02-24 02:21:31,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:21:31,471 INFO L470 AbstractCegarLoop]: Abstraction has 401 states and 463 transitions. [2022-02-24 02:21:31,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.4523809523809526) internal successors, (103), 35 states have internal predecessors, (103), 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) [2022-02-24 02:21:31,472 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 463 transitions. [2022-02-24 02:21:31,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-02-24 02:21:31,472 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:21:31,472 INFO L514 BasicCegarLoop]: trace histogram [32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:21:31,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-02-24 02:21:31,473 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:21:31,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:21:31,473 INFO L85 PathProgramCache]: Analyzing trace with hash 794485521, now seen corresponding path program 32 times [2022-02-24 02:21:31,473 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:21:31,473 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2035609236] [2022-02-24 02:21:31,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:21:31,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:21:31,507 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:21:31,507 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 02:21:31,507 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:21:31,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:21:31,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:21:31,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:21:31,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:21:31,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:21:31,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:21:31,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:21:31,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:21:31,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:21:31,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 02:21:31,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:21:31,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:21:31,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:21:32,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 02:21:32,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:21:33,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-24 02:21:33,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:21:33,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-02-24 02:21:33,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:21:33,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-02-24 02:21:33,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:21:33,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-02-24 02:21:33,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:21:33,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 02:21:33,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:21:33,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:21:33,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:21:33,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:21:33,153 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:21:33,153 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2035609236] [2022-02-24 02:21:33,153 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2035609236] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:21:33,154 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:21:33,154 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2022-02-24 02:21:33,154 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129489551] [2022-02-24 02:21:33,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:21:33,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-02-24 02:21:33,154 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:21:33,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-02-24 02:21:33,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1681, Unknown=0, NotChecked=0, Total=1806 [2022-02-24 02:21:33,155 INFO L87 Difference]: Start difference. First operand 401 states and 463 transitions. Second operand has 43 states, 43 states have (on average 2.4186046511627906) internal successors, (104), 36 states have internal predecessors, (104), 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) [2022-02-24 02:21:35,243 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 [] [2022-02-24 02:21:42,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:21:42,934 INFO L93 Difference]: Finished difference Result 739 states and 874 transitions. [2022-02-24 02:21:42,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-24 02:21:42,934 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.4186046511627906) internal successors, (104), 36 states have internal predecessors, (104), 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 134 [2022-02-24 02:21:42,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:21:42,936 INFO L225 Difference]: With dead ends: 739 [2022-02-24 02:21:42,936 INFO L226 Difference]: Without dead ends: 453 [2022-02-24 02:21:42,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 775 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=490, Invalid=5830, Unknown=0, NotChecked=0, Total=6320 [2022-02-24 02:21:42,937 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 142 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 2636 mSolverCounterSat, 136 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 2773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 2636 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-02-24 02:21:42,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 686 Invalid, 2773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 2636 Invalid, 1 Unknown, 0 Unchecked, 7.3s Time] [2022-02-24 02:21:42,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2022-02-24 02:21:43,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 403. [2022-02-24 02:21:43,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 328 states have (on average 1.1859756097560976) internal successors, (389), 332 states have internal predecessors, (389), 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) [2022-02-24 02:21:43,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 465 transitions. [2022-02-24 02:21:43,138 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 465 transitions. Word has length 134 [2022-02-24 02:21:43,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:21:43,139 INFO L470 AbstractCegarLoop]: Abstraction has 403 states and 465 transitions. [2022-02-24 02:21:43,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.4186046511627906) internal successors, (104), 36 states have internal predecessors, (104), 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) [2022-02-24 02:21:43,139 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 465 transitions. [2022-02-24 02:21:43,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-02-24 02:21:43,140 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:21:43,140 INFO L514 BasicCegarLoop]: trace histogram [33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:21:43,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-02-24 02:21:43,140 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:21:43,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:21:43,140 INFO L85 PathProgramCache]: Analyzing trace with hash 2044454685, now seen corresponding path program 33 times [2022-02-24 02:21:43,140 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:21:43,140 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [348380427] [2022-02-24 02:21:43,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:21:43,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:21:43,170 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:21:43,170 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 02:21:43,170 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:21:43,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:21:43,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:21:43,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:21:43,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:21:43,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:21:43,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:21:43,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:21:43,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:21:43,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:21:43,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 02:21:43,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:21:43,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:21:43,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:21:43,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 02:21:43,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:21:44,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-02-24 02:21:44,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:21:44,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-02-24 02:21:44,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:21:44,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-24 02:21:44,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:21:44,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-02-24 02:21:44,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:21:44,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 02:21:44,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:21:44,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:21:44,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:21:44,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:21:44,851 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:21:44,851 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [348380427] [2022-02-24 02:21:44,851 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [348380427] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:21:44,851 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:21:44,851 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2022-02-24 02:21:44,851 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673116640] [2022-02-24 02:21:44,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:21:44,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-02-24 02:21:44,852 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:21:44,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-02-24 02:21:44,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1764, Unknown=0, NotChecked=0, Total=1892 [2022-02-24 02:21:44,852 INFO L87 Difference]: Start difference. First operand 403 states and 465 transitions. Second operand has 44 states, 44 states have (on average 2.3863636363636362) internal successors, (105), 37 states have internal predecessors, (105), 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) [2022-02-24 02:21:46,941 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 [] [2022-02-24 02:21:55,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:21:55,110 INFO L93 Difference]: Finished difference Result 741 states and 876 transitions. [2022-02-24 02:21:55,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-02-24 02:21:55,110 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.3863636363636362) internal successors, (105), 37 states have internal predecessors, (105), 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 135 [2022-02-24 02:21:55,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:21:55,112 INFO L225 Difference]: With dead ends: 741 [2022-02-24 02:21:55,112 INFO L226 Difference]: Without dead ends: 455 [2022-02-24 02:21:55,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 815 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=503, Invalid=6139, Unknown=0, NotChecked=0, Total=6642 [2022-02-24 02:21:55,113 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 201 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 2839 mSolverCounterSat, 206 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 3046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 2839 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-02-24 02:21:55,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 734 Invalid, 3046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 2839 Invalid, 1 Unknown, 0 Unchecked, 7.7s Time] [2022-02-24 02:21:55,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2022-02-24 02:21:55,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 405. [2022-02-24 02:21:55,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 330 states have (on average 1.1848484848484848) internal successors, (391), 334 states have internal predecessors, (391), 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) [2022-02-24 02:21:55,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 467 transitions. [2022-02-24 02:21:55,321 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 467 transitions. Word has length 135 [2022-02-24 02:21:55,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:21:55,321 INFO L470 AbstractCegarLoop]: Abstraction has 405 states and 467 transitions. [2022-02-24 02:21:55,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.3863636363636362) internal successors, (105), 37 states have internal predecessors, (105), 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) [2022-02-24 02:21:55,321 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 467 transitions. [2022-02-24 02:21:55,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-02-24 02:21:55,322 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:21:55,322 INFO L514 BasicCegarLoop]: trace histogram [34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:21:55,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-02-24 02:21:55,322 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:21:55,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:21:55,322 INFO L85 PathProgramCache]: Analyzing trace with hash 2138793105, now seen corresponding path program 34 times [2022-02-24 02:21:55,322 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:21:55,322 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2116940133] [2022-02-24 02:21:55,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:21:55,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:21:55,351 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:21:55,351 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 02:21:55,351 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:21:55,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:21:55,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:21:55,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:21:55,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:21:55,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:21:55,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:21:55,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:21:55,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:21:55,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:21:55,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 02:21:55,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:21:55,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:21:55,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:21:55,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 02:21:55,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:21:56,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-02-24 02:21:56,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:21:56,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-02-24 02:21:56,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:21:56,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-02-24 02:21:56,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:21:56,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-02-24 02:21:56,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:21:57,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 02:21:57,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:21:57,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:21:57,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:21:57,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:21:57,033 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:21:57,033 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2116940133] [2022-02-24 02:21:57,033 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2116940133] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:21:57,033 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:21:57,033 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2022-02-24 02:21:57,033 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945811585] [2022-02-24 02:21:57,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:21:57,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-02-24 02:21:57,034 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:21:57,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-02-24 02:21:57,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1849, Unknown=0, NotChecked=0, Total=1980 [2022-02-24 02:21:57,034 INFO L87 Difference]: Start difference. First operand 405 states and 467 transitions. Second operand has 45 states, 45 states have (on average 2.3555555555555556) internal successors, (106), 38 states have internal predecessors, (106), 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) [2022-02-24 02:21:58,745 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []