/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-6c470ae [2022-02-15 03:00:42,456 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-15 03:00:42,457 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-15 03:00:42,485 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-15 03:00:42,490 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-15 03:00:42,492 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-15 03:00:42,493 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-15 03:00:42,494 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-15 03:00:42,494 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-15 03:00:42,495 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-15 03:00:42,496 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-15 03:00:42,497 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-15 03:00:42,497 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-15 03:00:42,501 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-15 03:00:42,501 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-15 03:00:42,502 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-15 03:00:42,504 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-15 03:00:42,509 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-15 03:00:42,509 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-15 03:00:42,510 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-15 03:00:42,516 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-02-15 03:00:42,528 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-15 03:00:42,528 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-15 03:00:42,529 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-15 03:00:42,530 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-15 03:00:42,530 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-15 03:00:42,530 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-15 03:00:42,530 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-15 03:00:42,530 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-15 03:00:42,530 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-15 03:00:42,530 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-15 03:00:42,531 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-15 03:00:42,531 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-15 03:00:42,531 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-15 03:00:42,531 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-15 03:00:42,531 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-15 03:00:42,531 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-15 03:00:42,531 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-15 03:00:42,531 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-15 03:00:42,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 03:00:42,531 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-15 03:00:42,532 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-15 03:00:42,532 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-15 03:00:42,532 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-02-15 03:00:42,532 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-15 03:00:42,727 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-15 03:00:42,745 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-15 03:00:42,746 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-15 03:00:42,747 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-15 03:00:42,747 INFO L275 PluginConnector]: CDTParser initialized [2022-02-15 03:00:42,748 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers/kbfiltr.i.cil-2.c [2022-02-15 03:00:42,803 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca973abd5/08a0b93edfcb4c669c2fead40f3b514e/FLAGcbd8e8dbe [2022-02-15 03:00:43,278 INFO L306 CDTParser]: Found 1 translation units. [2022-02-15 03:00:43,279 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/kbfiltr.i.cil-2.c [2022-02-15 03:00:43,312 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca973abd5/08a0b93edfcb4c669c2fead40f3b514e/FLAGcbd8e8dbe [2022-02-15 03:00:43,565 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca973abd5/08a0b93edfcb4c669c2fead40f3b514e [2022-02-15 03:00:43,567 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-15 03:00:43,567 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-15 03:00:43,568 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-15 03:00:43,568 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-15 03:00:43,581 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-15 03:00:43,582 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 03:00:43" (1/1) ... [2022-02-15 03:00:43,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ac30c87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 03:00:43, skipping insertion in model container [2022-02-15 03:00:43,583 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 03:00:43" (1/1) ... [2022-02-15 03:00:43,603 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-15 03:00:43,673 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-15 03:00:44,050 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] [2022-02-15 03:00:44,213 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 03:00:44,223 INFO L203 MainTranslator]: Completed pre-run [2022-02-15 03:00:44,276 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] [2022-02-15 03:00:44,368 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 03:00:44,389 INFO L208 MainTranslator]: Completed translation [2022-02-15 03:00:44,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 03:00:44 WrapperNode [2022-02-15 03:00:44,390 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-15 03:00:44,391 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-15 03:00:44,391 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-15 03:00:44,391 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-15 03:00:44,401 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 03:00:44" (1/1) ... [2022-02-15 03:00:44,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 03:00:44" (1/1) ... [2022-02-15 03:00:44,435 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 03:00:44" (1/1) ... [2022-02-15 03:00:44,447 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 03:00:44" (1/1) ... [2022-02-15 03:00:44,507 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 03:00:44" (1/1) ... [2022-02-15 03:00:44,523 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 03:00:44" (1/1) ... [2022-02-15 03:00:44,529 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 03:00:44" (1/1) ... [2022-02-15 03:00:44,569 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-15 03:00:44,570 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-15 03:00:44,570 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-15 03:00:44,570 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-15 03:00:44,571 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 03:00:44" (1/1) ... [2022-02-15 03:00:44,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 03:00:44,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 03:00:44,604 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) [2022-02-15 03:00:44,607 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 [2022-02-15 03:00:44,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-15 03:00:44,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-15 03:00:44,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~PVOID~0~X~~PVOID~0~X~$Pointer$~X~$Pointer$~X~~PBOOLEAN~0~TO~~NTSTATUS~0 [2022-02-15 03:00:44,636 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 [2022-02-15 03:00:44,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~PVOID~0~X~~PVOID~0~X~~PVOID~0~X~~PVOID~0~TO~VOID [2022-02-15 03:00:44,636 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-15 03:00:44,636 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-02-15 03:00:44,636 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedIncrement [2022-02-15 03:00:44,636 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedDecrement [2022-02-15 03:00:44,636 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_IoCtl [2022-02-15 03:00:44,636 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-02-15 03:00:44,636 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-02-15 03:00:44,637 INFO L138 BoogieDeclarations]: Found implementation of procedure DriverEntry [2022-02-15 03:00:44,637 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_AddDevice [2022-02-15 03:00:44,637 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2022-02-15 03:00:44,637 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_CreateClose [2022-02-15 03:00:44,637 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_DispatchPassThrough [2022-02-15 03:00:44,637 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_InternIoCtl [2022-02-15 03:00:44,637 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_PnP [2022-02-15 03:00:44,637 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Power [2022-02-15 03:00:44,637 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_InitializationRoutine [2022-02-15 03:00:44,637 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_IsrHook [2022-02-15 03:00:44,637 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_ServiceCallback [2022-02-15 03:00:44,637 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Unload [2022-02-15 03:00:44,637 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-02-15 03:00:44,637 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-15 03:00:44,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAcquireFastMutex [2022-02-15 03:00:44,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ExReleaseFastMutex [2022-02-15 03:00:44,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2022-02-15 03:00:44,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ExFreePool [2022-02-15 03:00:44,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertHeadList [2022-02-15 03:00:44,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertTailList [2022-02-15 03:00:44,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedRemoveHeadList [2022-02-15 03:00:44,638 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAllocateMdl [2022-02-15 03:00:44,638 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAttachDeviceToDeviceStack [2022-02-15 03:00:44,638 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildAsynchronousFsdRequest [2022-02-15 03:00:44,638 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2022-02-15 03:00:44,638 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateDevice [2022-02-15 03:00:44,638 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateSymbolicLink [2022-02-15 03:00:44,638 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteDevice [2022-02-15 03:00:44,638 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2022-02-15 03:00:44,639 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDetachDevice [2022-02-15 03:00:44,639 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeIrp [2022-02-15 03:00:44,639 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeMdl [2022-02-15 03:00:44,639 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2022-02-15 03:00:44,639 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2022-02-15 03:00:44,639 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2022-02-15 03:00:44,639 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReleaseCancelSpinLock [2022-02-15 03:00:44,639 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-02-15 03:00:44,639 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetHardErrorOrVerifyDevice [2022-02-15 03:00:44,639 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-02-15 03:00:44,639 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-02-15 03:00:44,639 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-02-15 03:00:44,639 INFO L138 BoogieDeclarations]: Found implementation of procedure KeAcquireSpinLockRaiseToDpc [2022-02-15 03:00:44,639 INFO L138 BoogieDeclarations]: Found implementation of procedure KeDelayExecutionThread [2022-02-15 03:00:44,639 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeEvent [2022-02-15 03:00:44,640 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSemaphore [2022-02-15 03:00:44,640 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSpinLock [2022-02-15 03:00:44,640 INFO L138 BoogieDeclarations]: Found implementation of procedure KeReleaseSemaphore [2022-02-15 03:00:44,640 INFO L138 BoogieDeclarations]: Found implementation of procedure KfReleaseSpinLock [2022-02-15 03:00:44,640 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-02-15 03:00:44,640 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-02-15 03:00:44,640 INFO L138 BoogieDeclarations]: Found implementation of procedure MmAllocateContiguousMemory [2022-02-15 03:00:44,640 INFO L138 BoogieDeclarations]: Found implementation of procedure MmFreeContiguousMemory [2022-02-15 03:00:44,640 INFO L138 BoogieDeclarations]: Found implementation of procedure MmMapLockedPagesSpecifyCache [2022-02-15 03:00:44,640 INFO L138 BoogieDeclarations]: Found implementation of procedure MmPageEntireDriver [2022-02-15 03:00:44,640 INFO L138 BoogieDeclarations]: Found implementation of procedure MmResetDriverPaging [2022-02-15 03:00:44,640 INFO L138 BoogieDeclarations]: Found implementation of procedure MmUnlockPages [2022-02-15 03:00:44,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2022-02-15 03:00:44,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ObfDereferenceObject [2022-02-15 03:00:44,641 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-02-15 03:00:44,641 INFO L138 BoogieDeclarations]: Found implementation of procedure PoStartNextPowerIrp [2022-02-15 03:00:44,641 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2022-02-15 03:00:44,641 INFO L138 BoogieDeclarations]: Found implementation of procedure PsTerminateSystemThread [2022-02-15 03:00:44,641 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlAnsiStringToUnicodeString [2022-02-15 03:00:44,641 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCompareMemory [2022-02-15 03:00:44,641 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCopyUnicodeString [2022-02-15 03:00:44,641 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlDeleteRegistryValue [2022-02-15 03:00:44,641 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlFreeUnicodeString [2022-02-15 03:00:44,641 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitString [2022-02-15 03:00:44,641 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitUnicodeString [2022-02-15 03:00:44,641 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlQueryRegistryValues [2022-02-15 03:00:44,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-02-15 03:00:44,642 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-02-15 03:00:44,642 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-02-15 03:00:44,642 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-15 03:00:44,642 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-15 03:00:44,642 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-15 03:00:44,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-15 03:00:44,642 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-02-15 03:00:44,642 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-15 03:00:44,642 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-02-15 03:00:44,643 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2022-02-15 03:00:44,643 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-02-15 03:00:44,643 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2022-02-15 03:00:44,643 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2022-02-15 03:00:44,643 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2022-02-15 03:00:44,643 INFO L130 BoogieDeclarations]: Found specification of procedure RtlQueryRegistryValues [2022-02-15 03:00:44,643 INFO L130 BoogieDeclarations]: Found specification of procedure RtlDeleteRegistryValue [2022-02-15 03:00:44,643 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitString [2022-02-15 03:00:44,643 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitUnicodeString [2022-02-15 03:00:44,643 INFO L130 BoogieDeclarations]: Found specification of procedure RtlAnsiStringToUnicodeString [2022-02-15 03:00:44,643 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCopyUnicodeString [2022-02-15 03:00:44,643 INFO L130 BoogieDeclarations]: Found specification of procedure RtlFreeUnicodeString [2022-02-15 03:00:44,643 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCompareMemory [2022-02-15 03:00:44,643 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedIncrement [2022-02-15 03:00:44,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-15 03:00:44,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-15 03:00:44,644 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedDecrement [2022-02-15 03:00:44,644 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeEvent [2022-02-15 03:00:44,644 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-02-15 03:00:44,644 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSemaphore [2022-02-15 03:00:44,644 INFO L130 BoogieDeclarations]: Found specification of procedure KeReleaseSemaphore [2022-02-15 03:00:44,644 INFO L130 BoogieDeclarations]: Found specification of procedure KeDelayExecutionThread [2022-02-15 03:00:44,644 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-02-15 03:00:44,644 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSpinLock [2022-02-15 03:00:44,644 INFO L130 BoogieDeclarations]: Found specification of procedure KfReleaseSpinLock [2022-02-15 03:00:44,644 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2022-02-15 03:00:44,644 INFO L130 BoogieDeclarations]: Found specification of procedure ExFreePool [2022-02-15 03:00:44,644 INFO L130 BoogieDeclarations]: Found specification of procedure ExAcquireFastMutex [2022-02-15 03:00:44,644 INFO L130 BoogieDeclarations]: Found specification of procedure ExReleaseFastMutex [2022-02-15 03:00:44,644 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertHeadList [2022-02-15 03:00:44,645 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertTailList [2022-02-15 03:00:44,645 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedRemoveHeadList [2022-02-15 03:00:44,645 INFO L130 BoogieDeclarations]: Found specification of procedure MmUnlockPages [2022-02-15 03:00:44,645 INFO L130 BoogieDeclarations]: Found specification of procedure MmMapLockedPagesSpecifyCache [2022-02-15 03:00:44,645 INFO L130 BoogieDeclarations]: Found specification of procedure MmAllocateContiguousMemory [2022-02-15 03:00:44,645 INFO L130 BoogieDeclarations]: Found specification of procedure MmFreeContiguousMemory [2022-02-15 03:00:44,645 INFO L130 BoogieDeclarations]: Found specification of procedure MmResetDriverPaging [2022-02-15 03:00:44,645 INFO L130 BoogieDeclarations]: Found specification of procedure MmPageEntireDriver [2022-02-15 03:00:44,645 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2022-02-15 03:00:44,645 INFO L130 BoogieDeclarations]: Found specification of procedure PsTerminateSystemThread [2022-02-15 03:00:44,645 INFO L130 BoogieDeclarations]: Found specification of procedure IoAllocateMdl [2022-02-15 03:00:44,645 INFO L130 BoogieDeclarations]: Found specification of procedure IoAttachDeviceToDeviceStack [2022-02-15 03:00:44,645 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildAsynchronousFsdRequest [2022-02-15 03:00:44,645 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2022-02-15 03:00:44,645 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-02-15 03:00:44,645 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-02-15 03:00:44,646 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateDevice [2022-02-15 03:00:44,646 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateSymbolicLink [2022-02-15 03:00:44,646 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteDevice [2022-02-15 03:00:44,646 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2022-02-15 03:00:44,646 INFO L130 BoogieDeclarations]: Found specification of procedure IoDetachDevice [2022-02-15 03:00:44,646 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeIrp [2022-02-15 03:00:44,646 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeMdl [2022-02-15 03:00:44,646 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2022-02-15 03:00:44,646 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2022-02-15 03:00:44,646 INFO L130 BoogieDeclarations]: Found specification of procedure IoReleaseCancelSpinLock [2022-02-15 03:00:44,646 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetHardErrorOrVerifyDevice [2022-02-15 03:00:44,646 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2022-02-15 03:00:44,646 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-02-15 03:00:44,646 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-02-15 03:00:44,646 INFO L130 BoogieDeclarations]: Found specification of procedure PoStartNextPowerIrp [2022-02-15 03:00:44,646 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2022-02-15 03:00:44,647 INFO L130 BoogieDeclarations]: Found specification of procedure ObfDereferenceObject [2022-02-15 03:00:44,647 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-02-15 03:00:44,647 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_AddDevice [2022-02-15 03:00:44,647 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_CreateClose [2022-02-15 03:00:44,647 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_DispatchPassThrough [2022-02-15 03:00:44,647 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_InternIoCtl [2022-02-15 03:00:44,647 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_IoCtl [2022-02-15 03:00:44,647 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_PnP [2022-02-15 03:00:44,647 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Power [2022-02-15 03:00:44,647 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_InitializationRoutine [2022-02-15 03:00:44,647 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_IsrHook [2022-02-15 03:00:44,647 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_ServiceCallback [2022-02-15 03:00:44,647 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Unload [2022-02-15 03:00:44,647 INFO L130 BoogieDeclarations]: Found specification of procedure DriverEntry [2022-02-15 03:00:44,647 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-02-15 03:00:44,647 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-02-15 03:00:44,647 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-02-15 03:00:44,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-02-15 03:00:44,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-02-15 03:00:44,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-15 03:00:44,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-15 03:00:44,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-02-15 03:00:44,648 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2022-02-15 03:00:44,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-02-15 03:00:44,648 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~PVOID~0~X~~PVOID~0~X~$Pointer$~X~$Pointer$~X~~PBOOLEAN~0~TO~~NTSTATUS~0 [2022-02-15 03:00:44,648 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 [2022-02-15 03:00:44,648 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~PVOID~0~X~~PVOID~0~X~~PVOID~0~X~~PVOID~0~TO~VOID [2022-02-15 03:00:44,648 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-02-15 03:00:44,648 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2022-02-15 03:00:44,648 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-15 03:00:44,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-02-15 03:00:44,648 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-02-15 03:00:44,648 INFO L130 BoogieDeclarations]: Found specification of procedure KeAcquireSpinLockRaiseToDpc [2022-02-15 03:00:44,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-15 03:00:44,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-15 03:00:44,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-15 03:00:44,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-02-15 03:00:44,649 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-02-15 03:00:44,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-02-15 03:00:44,649 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-02-15 03:00:45,081 INFO L234 CfgBuilder]: Building ICFG [2022-02-15 03:00:45,089 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-15 03:00:45,108 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:45,137 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 03:00:45,137 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 03:00:45,137 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:45,142 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 03:00:45,142 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 03:00:45,152 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:45,156 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 03:00:45,156 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 03:00:45,157 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:45,164 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 03:00:45,164 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 03:00:45,167 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:45,173 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 03:00:45,173 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 03:00:45,402 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:45,409 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 03:00:45,409 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 03:00:45,410 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:45,419 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 03:00:45,419 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 03:00:45,420 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:45,430 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 03:00:45,430 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 03:00:45,441 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:45,445 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 03:00:45,445 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 03:00:45,446 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:45,449 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 03:00:45,449 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 03:00:45,449 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:45,455 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 03:00:45,455 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 03:00:45,475 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:45,479 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 03:00:45,479 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 03:00:45,479 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:45,483 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 03:00:45,483 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 03:00:45,490 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:45,597 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2022-02-15 03:00:45,597 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2022-02-15 03:00:45,612 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:45,631 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-02-15 03:00:45,631 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-02-15 03:00:45,645 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:45,648 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 03:00:45,649 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 03:00:45,653 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:46,718 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-02-15 03:00:46,718 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-02-15 03:00:46,829 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:46,832 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 03:00:46,832 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 03:00:46,890 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:46,893 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 03:00:46,893 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 03:00:46,903 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:46,917 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-02-15 03:00:46,917 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-02-15 03:00:46,922 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:46,929 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-02-15 03:00:46,929 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-02-15 03:00:46,948 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:46,951 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 03:00:46,951 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 03:00:46,952 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:46,976 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2022-02-15 03:00:46,976 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2022-02-15 03:00:46,979 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:46,983 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 03:00:46,983 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 03:00:47,003 INFO L275 CfgBuilder]: Performing block encoding [2022-02-15 03:00:47,010 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-15 03:00:47,010 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-15 03:00:47,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 03:00:47 BoogieIcfgContainer [2022-02-15 03:00:47,012 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-15 03:00:47,013 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-15 03:00:47,013 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-15 03:00:47,015 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-15 03:00:47,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 03:00:43" (1/3) ... [2022-02-15 03:00:47,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ae56553 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 03:00:47, skipping insertion in model container [2022-02-15 03:00:47,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 03:00:44" (2/3) ... [2022-02-15 03:00:47,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ae56553 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 03:00:47, skipping insertion in model container [2022-02-15 03:00:47,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 03:00:47" (3/3) ... [2022-02-15 03:00:47,017 INFO L111 eAbstractionObserver]: Analyzing ICFG kbfiltr.i.cil-2.c [2022-02-15 03:00:47,020 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-15 03:00:47,020 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-15 03:00:47,047 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-15 03:00:47,051 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 [2022-02-15 03:00:47,051 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-15 03:00:47,063 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) [2022-02-15 03:00:47,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-15 03:00:47,068 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:00:47,068 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] [2022-02-15 03:00:47,069 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:00:47,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:00:47,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1774662017, now seen corresponding path program 1 times [2022-02-15 03:00:47,077 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:00:47,077 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [37507526] [2022-02-15 03:00:47,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:00:47,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:00:47,144 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:00:47,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:00:47,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:00:47,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:00:47,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:00:47,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:00:47,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:00:47,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:00:47,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:00:47,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:00:47,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:00:47,566 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:00:47,566 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [37507526] [2022-02-15 03:00:47,567 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [37507526] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:00:47,567 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:00:47,567 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 03:00:47,568 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77658044] [2022-02-15 03:00:47,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:00:47,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-15 03:00:47,571 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:00:47,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-15 03:00:47,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-02-15 03:00:47,623 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) [2022-02-15 03:00:49,697 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 [] [2022-02-15 03:00:51,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:00:51,174 INFO L93 Difference]: Finished difference Result 643 states and 953 transitions. [2022-02-15 03:00:51,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 03:00:51,176 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 [2022-02-15 03:00:51,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:00:51,184 INFO L225 Difference]: With dead ends: 643 [2022-02-15 03:00:51,185 INFO L226 Difference]: Without dead ends: 343 [2022-02-15 03:00:51,188 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 [2022-02-15 03:00:51,191 INFO L933 BasicCegarLoop]: 335 mSDtfsCounter, 597 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 220 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s 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, 3.4s IncrementalHoareTripleChecker+Time [2022-02-15 03:00:51,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [602 Valid, 463 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 379 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2022-02-15 03:00:51,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-02-15 03:00:51,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 299. [2022-02-15 03:00:51,344 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) [2022-02-15 03:00:51,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 407 transitions. [2022-02-15 03:00:51,351 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 407 transitions. Word has length 31 [2022-02-15 03:00:51,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:00:51,352 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 407 transitions. [2022-02-15 03:00:51,352 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) [2022-02-15 03:00:51,353 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 407 transitions. [2022-02-15 03:00:51,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-15 03:00:51,354 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:00:51,354 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] [2022-02-15 03:00:51,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-15 03:00:51,355 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:00:51,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:00:51,357 INFO L85 PathProgramCache]: Analyzing trace with hash 186314115, now seen corresponding path program 1 times [2022-02-15 03:00:51,357 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:00:51,358 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [580725410] [2022-02-15 03:00:51,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:00:51,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:00:51,378 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:00:51,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:00:51,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:00:51,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:00:51,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:00:51,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:00:51,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:00:51,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:00:51,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:00:51,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:00:51,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:00:51,827 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:00:51,827 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [580725410] [2022-02-15 03:00:51,827 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [580725410] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:00:51,828 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:00:51,828 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-15 03:00:51,828 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472687532] [2022-02-15 03:00:51,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:00:51,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-15 03:00:51,830 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:00:51,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-15 03:00:51,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-02-15 03:00:51,836 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) [2022-02-15 03:00:53,908 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:00:55,811 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:00:58,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:00:58,304 INFO L93 Difference]: Finished difference Result 360 states and 492 transitions. [2022-02-15 03:00:58,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-15 03:00:58,304 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 [2022-02-15 03:00:58,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:00:58,307 INFO L225 Difference]: With dead ends: 360 [2022-02-15 03:00:58,307 INFO L226 Difference]: Without dead ends: 343 [2022-02-15 03:00:58,307 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 [2022-02-15 03:00:58,308 INFO L933 BasicCegarLoop]: 314 mSDtfsCounter, 395 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 1531 mSolverCounterSat, 148 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 1680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 1531 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-02-15 03:00:58,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [401 Valid, 683 Invalid, 1680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 1531 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2022-02-15 03:00:58,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-02-15 03:00:58,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 299. [2022-02-15 03:00:58,334 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) [2022-02-15 03:00:58,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 406 transitions. [2022-02-15 03:00:58,336 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 406 transitions. Word has length 31 [2022-02-15 03:00:58,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:00:58,336 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 406 transitions. [2022-02-15 03:00:58,336 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) [2022-02-15 03:00:58,336 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 406 transitions. [2022-02-15 03:00:58,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-02-15 03:00:58,337 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:00:58,338 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] [2022-02-15 03:00:58,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-15 03:00:58,338 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:00:58,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:00:58,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1201516382, now seen corresponding path program 1 times [2022-02-15 03:00:58,338 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:00:58,338 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [91674555] [2022-02-15 03:00:58,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:00:58,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:00:58,345 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:00:58,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:00:58,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:00:58,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:00:58,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:00:58,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:00:58,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:00:58,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:00:58,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:00:58,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:00:58,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:00:58,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:00:58,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:00:58,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:00:58,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-15 03:00:58,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:00:58,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:00:58,655 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:00:58,655 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [91674555] [2022-02-15 03:00:58,657 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [91674555] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:00:58,657 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:00:58,657 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-15 03:00:58,658 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434821659] [2022-02-15 03:00:58,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:00:58,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 03:00:58,659 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:00:58,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 03:00:58,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-02-15 03:00:58,660 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) [2022-02-15 03:00:59,826 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:01:01,839 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:01:03,874 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:01:05,897 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:01:07,914 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:01:09,934 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:01:11,951 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 [] [2022-02-15 03:01:16,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:01:16,366 INFO L93 Difference]: Finished difference Result 599 states and 829 transitions. [2022-02-15 03:01:16,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-15 03:01:16,366 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 [2022-02-15 03:01:16,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:01:16,369 INFO L225 Difference]: With dead ends: 599 [2022-02-15 03:01:16,369 INFO L226 Difference]: Without dead ends: 348 [2022-02-15 03:01:16,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2022-02-15 03:01:16,371 INFO L933 BasicCegarLoop]: 312 mSDtfsCounter, 609 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 1672 mSolverCounterSat, 253 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 1931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 1672 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.3s IncrementalHoareTripleChecker+Time [2022-02-15 03:01:16,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [612 Valid, 792 Invalid, 1931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 1672 Invalid, 6 Unknown, 0 Unchecked, 17.3s Time] [2022-02-15 03:01:16,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2022-02-15 03:01:16,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 303. [2022-02-15 03:01:16,401 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) [2022-02-15 03:01:16,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 410 transitions. [2022-02-15 03:01:16,402 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 410 transitions. Word has length 53 [2022-02-15 03:01:16,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:01:16,403 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 410 transitions. [2022-02-15 03:01:16,403 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) [2022-02-15 03:01:16,403 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 410 transitions. [2022-02-15 03:01:16,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-02-15 03:01:16,404 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:01:16,404 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] [2022-02-15 03:01:16,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-15 03:01:16,405 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:01:16,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:01:16,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1078281185, now seen corresponding path program 1 times [2022-02-15 03:01:16,405 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:01:16,405 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [825828949] [2022-02-15 03:01:16,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:01:16,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:01:16,412 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:01:16,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:16,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:01:16,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:16,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:01:16,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:16,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:01:16,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:16,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:01:16,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:16,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:01:16,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:16,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:01:16,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:16,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-15 03:01:16,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:16,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:01:16,691 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:01:16,691 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [825828949] [2022-02-15 03:01:16,691 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [825828949] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:01:16,691 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:01:16,691 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-15 03:01:16,691 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984232171] [2022-02-15 03:01:16,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:01:16,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-15 03:01:16,692 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:01:16,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-15 03:01:16,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-02-15 03:01:16,692 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) [2022-02-15 03:01:18,806 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:01:20,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:01:20,795 INFO L93 Difference]: Finished difference Result 492 states and 667 transitions. [2022-02-15 03:01:20,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-15 03:01:20,796 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 [2022-02-15 03:01:20,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:01:20,798 INFO L225 Difference]: With dead ends: 492 [2022-02-15 03:01:20,799 INFO L226 Difference]: Without dead ends: 431 [2022-02-15 03:01:20,799 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 [2022-02-15 03:01:20,800 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 864 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 299 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 808 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-02-15 03:01:20,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [869 Valid, 615 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 808 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2022-02-15 03:01:20,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2022-02-15 03:01:20,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 374. [2022-02-15 03:01:20,840 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) [2022-02-15 03:01:20,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 498 transitions. [2022-02-15 03:01:20,843 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 498 transitions. Word has length 53 [2022-02-15 03:01:20,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:01:20,844 INFO L470 AbstractCegarLoop]: Abstraction has 374 states and 498 transitions. [2022-02-15 03:01:20,844 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) [2022-02-15 03:01:20,845 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 498 transitions. [2022-02-15 03:01:20,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-02-15 03:01:20,851 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:01:20,852 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] [2022-02-15 03:01:20,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-15 03:01:20,852 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:01:20,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:01:20,859 INFO L85 PathProgramCache]: Analyzing trace with hash 17478568, now seen corresponding path program 1 times [2022-02-15 03:01:20,860 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:01:20,860 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1394135978] [2022-02-15 03:01:20,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:01:20,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:01:20,881 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:01:20,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:21,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:01:21,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:21,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:01:21,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:21,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:01:21,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:21,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:01:21,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:21,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:01:21,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:21,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:01:21,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:21,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-15 03:01:21,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:21,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-02-15 03:01:21,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:21,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:01:21,277 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:01:21,277 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1394135978] [2022-02-15 03:01:21,277 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1394135978] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:01:21,277 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:01:21,277 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-15 03:01:21,277 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136983992] [2022-02-15 03:01:21,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:01:21,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-15 03:01:21,277 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:01:21,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-15 03:01:21,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-02-15 03:01:21,278 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) [2022-02-15 03:01:23,407 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 [] [2022-02-15 03:01:25,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:01:25,205 INFO L93 Difference]: Finished difference Result 569 states and 751 transitions. [2022-02-15 03:01:25,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-15 03:01:25,205 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 [2022-02-15 03:01:25,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:01:25,208 INFO L225 Difference]: With dead ends: 569 [2022-02-15 03:01:25,208 INFO L226 Difference]: Without dead ends: 450 [2022-02-15 03:01:25,208 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 [2022-02-15 03:01:25,209 INFO L933 BasicCegarLoop]: 320 mSDtfsCounter, 974 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 330 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s 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, 3.6s IncrementalHoareTripleChecker+Time [2022-02-15 03:01:25,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [986 Valid, 489 Invalid, 981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 650 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2022-02-15 03:01:25,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-02-15 03:01:25,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 410. [2022-02-15 03:01:25,300 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) [2022-02-15 03:01:25,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 545 transitions. [2022-02-15 03:01:25,304 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 545 transitions. Word has length 60 [2022-02-15 03:01:25,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:01:25,304 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 545 transitions. [2022-02-15 03:01:25,304 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) [2022-02-15 03:01:25,305 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 545 transitions. [2022-02-15 03:01:25,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-02-15 03:01:25,306 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:01:25,307 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] [2022-02-15 03:01:25,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-15 03:01:25,307 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:01:25,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:01:25,307 INFO L85 PathProgramCache]: Analyzing trace with hash -110356200, now seen corresponding path program 1 times [2022-02-15 03:01:25,307 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:01:25,307 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [305289409] [2022-02-15 03:01:25,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:01:25,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:01:25,318 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:01:25,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:25,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:01:25,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:25,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:01:25,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:25,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:01:25,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:25,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:01:25,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:25,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:01:25,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:25,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:01:25,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:25,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-15 03:01:25,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:25,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-02-15 03:01:25,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:25,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:01:25,758 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:01:25,758 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [305289409] [2022-02-15 03:01:25,758 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [305289409] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:01:25,758 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:01:25,758 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-15 03:01:25,758 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908061558] [2022-02-15 03:01:25,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:01:25,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-15 03:01:25,759 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:01:25,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-15 03:01:25,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-02-15 03:01:25,760 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) [2022-02-15 03:01:28,018 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 [] [2022-02-15 03:01:31,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:01:31,083 INFO L93 Difference]: Finished difference Result 450 states and 594 transitions. [2022-02-15 03:01:31,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-15 03:01:31,084 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 [2022-02-15 03:01:31,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:01:31,086 INFO L225 Difference]: With dead ends: 450 [2022-02-15 03:01:31,086 INFO L226 Difference]: Without dead ends: 442 [2022-02-15 03:01:31,086 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 [2022-02-15 03:01:31,087 INFO L933 BasicCegarLoop]: 333 mSDtfsCounter, 1504 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 516 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 1265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 516 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-02-15 03:01:31,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1513 Valid, 541 Invalid, 1265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [516 Valid, 748 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2022-02-15 03:01:31,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2022-02-15 03:01:31,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 415. [2022-02-15 03:01:31,148 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) [2022-02-15 03:01:31,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 551 transitions. [2022-02-15 03:01:31,152 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 551 transitions. Word has length 60 [2022-02-15 03:01:31,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:01:31,152 INFO L470 AbstractCegarLoop]: Abstraction has 415 states and 551 transitions. [2022-02-15 03:01:31,152 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) [2022-02-15 03:01:31,152 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 551 transitions. [2022-02-15 03:01:31,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-02-15 03:01:31,154 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:01:31,154 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] [2022-02-15 03:01:31,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-15 03:01:31,154 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:01:31,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:01:31,154 INFO L85 PathProgramCache]: Analyzing trace with hash 400358010, now seen corresponding path program 1 times [2022-02-15 03:01:31,154 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:01:31,154 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [656052111] [2022-02-15 03:01:31,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:01:31,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:01:31,166 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:01:31,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:31,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:01:31,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:31,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:01:31,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:31,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:01:31,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:31,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:01:31,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:31,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:01:31,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:31,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:01:31,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:31,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-15 03:01:31,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:31,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:01:31,436 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:01:31,437 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [656052111] [2022-02-15 03:01:31,437 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [656052111] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:01:31,437 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:01:31,437 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-15 03:01:31,437 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71441764] [2022-02-15 03:01:31,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:01:31,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-15 03:01:31,437 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:01:31,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-15 03:01:31,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-02-15 03:01:31,438 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) [2022-02-15 03:01:33,559 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:01:36,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:01:36,343 INFO L93 Difference]: Finished difference Result 433 states and 574 transitions. [2022-02-15 03:01:36,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-15 03:01:36,344 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 [2022-02-15 03:01:36,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:01:36,346 INFO L225 Difference]: With dead ends: 433 [2022-02-15 03:01:36,346 INFO L226 Difference]: Without dead ends: 429 [2022-02-15 03:01:36,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-02-15 03:01:36,348 INFO L933 BasicCegarLoop]: 298 mSDtfsCounter, 725 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 257 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-02-15 03:01:36,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [729 Valid, 475 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 675 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2022-02-15 03:01:36,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2022-02-15 03:01:36,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 414. [2022-02-15 03:01:36,406 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) [2022-02-15 03:01:36,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 548 transitions. [2022-02-15 03:01:36,408 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 548 transitions. Word has length 62 [2022-02-15 03:01:36,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:01:36,409 INFO L470 AbstractCegarLoop]: Abstraction has 414 states and 548 transitions. [2022-02-15 03:01:36,409 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) [2022-02-15 03:01:36,409 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 548 transitions. [2022-02-15 03:01:36,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-02-15 03:01:36,410 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:01:36,410 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] [2022-02-15 03:01:36,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-15 03:01:36,410 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:01:36,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:01:36,410 INFO L85 PathProgramCache]: Analyzing trace with hash 466089939, now seen corresponding path program 1 times [2022-02-15 03:01:36,410 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:01:36,411 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2127113492] [2022-02-15 03:01:36,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:01:36,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:01:36,422 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:01:36,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:36,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:01:36,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:36,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:01:36,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:36,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:01:36,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:36,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:01:36,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:36,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:01:36,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:36,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:01:36,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:36,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-15 03:01:36,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:36,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-02-15 03:01:36,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:36,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:01:36,830 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:01:36,831 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2127113492] [2022-02-15 03:01:36,831 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2127113492] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:01:36,831 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:01:36,831 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-15 03:01:36,831 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308501486] [2022-02-15 03:01:36,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:01:36,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-15 03:01:36,831 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:01:36,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-15 03:01:36,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-02-15 03:01:36,832 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) [2022-02-15 03:01:38,989 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 [] [2022-02-15 03:01:41,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:01:41,744 INFO L93 Difference]: Finished difference Result 448 states and 589 transitions. [2022-02-15 03:01:41,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-15 03:01:41,744 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 [2022-02-15 03:01:41,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:01:41,747 INFO L225 Difference]: With dead ends: 448 [2022-02-15 03:01:41,747 INFO L226 Difference]: Without dead ends: 440 [2022-02-15 03:01:41,747 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 [2022-02-15 03:01:41,749 INFO L933 BasicCegarLoop]: 334 mSDtfsCounter, 1683 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 887 mSolverCounterSat, 559 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1692 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 1447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 559 IncrementalHoareTripleChecker+Valid, 887 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-02-15 03:01:41,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1692 Valid, 606 Invalid, 1447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [559 Valid, 887 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2022-02-15 03:01:41,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2022-02-15 03:01:41,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 415. [2022-02-15 03:01:41,835 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) [2022-02-15 03:01:41,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 549 transitions. [2022-02-15 03:01:41,837 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 549 transitions. Word has length 61 [2022-02-15 03:01:41,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:01:41,837 INFO L470 AbstractCegarLoop]: Abstraction has 415 states and 549 transitions. [2022-02-15 03:01:41,837 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) [2022-02-15 03:01:41,837 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 549 transitions. [2022-02-15 03:01:41,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-02-15 03:01:41,839 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:01:41,839 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] [2022-02-15 03:01:41,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-15 03:01:41,839 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:01:41,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:01:41,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1325055407, now seen corresponding path program 1 times [2022-02-15 03:01:41,839 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:01:41,839 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [757882626] [2022-02-15 03:01:41,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:01:41,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:01:41,854 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:01:41,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:41,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:01:41,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:41,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:01:41,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:42,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:01:42,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:42,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:01:42,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:42,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:01:42,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:42,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:01:42,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:42,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-15 03:01:42,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:42,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-02-15 03:01:42,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:42,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:01:42,098 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:01:42,098 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [757882626] [2022-02-15 03:01:42,098 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [757882626] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:01:42,098 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:01:42,098 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-15 03:01:42,098 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868136314] [2022-02-15 03:01:42,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:01:42,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 03:01:42,099 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:01:42,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 03:01:42,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-02-15 03:01:42,100 INFO L87 Difference]: Start difference. First operand 415 states and 549 transitions. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 5 states have internal predecessors, (44), 4 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-02-15 03:01:44,224 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:01:46,609 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:01:48,625 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 [] [2022-02-15 03:01:49,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:01:49,986 INFO L93 Difference]: Finished difference Result 442 states and 581 transitions. [2022-02-15 03:01:49,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-15 03:01:49,987 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 [2022-02-15 03:01:49,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:01:49,988 INFO L225 Difference]: With dead ends: 442 [2022-02-15 03:01:49,989 INFO L226 Difference]: Without dead ends: 389 [2022-02-15 03:01:49,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2022-02-15 03:01:49,989 INFO L933 BasicCegarLoop]: 337 mSDtfsCounter, 1384 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 877 mSolverCounterSat, 450 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1392 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 1329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 877 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-02-15 03:01:49,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1392 Valid, 611 Invalid, 1329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 877 Invalid, 2 Unknown, 0 Unchecked, 7.1s Time] [2022-02-15 03:01:49,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2022-02-15 03:01:50,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 371. [2022-02-15 03:01:50,063 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) [2022-02-15 03:01:50,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 493 transitions. [2022-02-15 03:01:50,064 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 493 transitions. Word has length 62 [2022-02-15 03:01:50,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:01:50,065 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 493 transitions. [2022-02-15 03:01:50,065 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) [2022-02-15 03:01:50,065 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 493 transitions. [2022-02-15 03:01:50,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-02-15 03:01:50,066 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:01:50,066 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] [2022-02-15 03:01:50,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-15 03:01:50,066 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:01:50,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:01:50,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1052170321, now seen corresponding path program 1 times [2022-02-15 03:01:50,066 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:01:50,066 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1604806028] [2022-02-15 03:01:50,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:01:50,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:01:50,074 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:01:50,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:50,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:01:50,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:50,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:01:50,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:50,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:01:50,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:50,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:01:50,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:50,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:01:50,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:50,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:01:50,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:50,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-15 03:01:50,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:50,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 03:01:50,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:50,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-15 03:01:50,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:50,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:01:50,637 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:01:50,637 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1604806028] [2022-02-15 03:01:50,637 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1604806028] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:01:50,637 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:01:50,638 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-15 03:01:50,638 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186197839] [2022-02-15 03:01:50,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:01:50,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-15 03:01:50,638 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:01:50,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-15 03:01:50,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-02-15 03:01:50,639 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) [2022-02-15 03:01:52,839 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 [] [2022-02-15 03:01:56,826 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 [] [2022-02-15 03:01:59,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:01:59,099 INFO L93 Difference]: Finished difference Result 417 states and 550 transitions. [2022-02-15 03:01:59,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-15 03:01:59,100 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 [2022-02-15 03:01:59,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:01:59,101 INFO L225 Difference]: With dead ends: 417 [2022-02-15 03:01:59,101 INFO L226 Difference]: Without dead ends: 409 [2022-02-15 03:01:59,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=190, Invalid=566, Unknown=0, NotChecked=0, Total=756 [2022-02-15 03:01:59,102 INFO L933 BasicCegarLoop]: 278 mSDtfsCounter, 884 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 1342 mSolverCounterSat, 274 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 896 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 1618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1342 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-02-15 03:01:59,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [896 Valid, 572 Invalid, 1618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1342 Invalid, 2 Unknown, 0 Unchecked, 7.8s Time] [2022-02-15 03:01:59,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2022-02-15 03:01:59,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 386. [2022-02-15 03:01:59,211 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) [2022-02-15 03:01:59,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 511 transitions. [2022-02-15 03:01:59,220 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 511 transitions. Word has length 72 [2022-02-15 03:01:59,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:01:59,220 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 511 transitions. [2022-02-15 03:01:59,221 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) [2022-02-15 03:01:59,221 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 511 transitions. [2022-02-15 03:01:59,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-02-15 03:01:59,221 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:01:59,222 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] [2022-02-15 03:01:59,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-02-15 03:01:59,222 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:01:59,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:01:59,222 INFO L85 PathProgramCache]: Analyzing trace with hash 2144673722, now seen corresponding path program 1 times [2022-02-15 03:01:59,222 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:01:59,222 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2004081029] [2022-02-15 03:01:59,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:01:59,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:01:59,231 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:01:59,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:59,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:01:59,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:59,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:01:59,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:59,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:01:59,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:59,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:01:59,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:59,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:01:59,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:59,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:01:59,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:59,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-15 03:01:59,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:59,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 03:01:59,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:59,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-15 03:01:59,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:59,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:01:59,574 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:01:59,601 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2004081029] [2022-02-15 03:01:59,602 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2004081029] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:01:59,602 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:01:59,602 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-15 03:01:59,602 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888003977] [2022-02-15 03:01:59,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:01:59,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-15 03:01:59,602 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:01:59,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-15 03:01:59,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-02-15 03:01:59,603 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) [2022-02-15 03:02:02,635 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:02:04,660 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:02:06,681 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:02:08,699 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:02:10,716 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:02:12,741 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 [] [2022-02-15 03:02:18,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:02:18,574 INFO L93 Difference]: Finished difference Result 417 states and 549 transitions. [2022-02-15 03:02:18,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-15 03:02:18,574 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 [2022-02-15 03:02:18,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:02:18,577 INFO L225 Difference]: With dead ends: 417 [2022-02-15 03:02:18,577 INFO L226 Difference]: Without dead ends: 409 [2022-02-15 03:02:18,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=199, Invalid=613, Unknown=0, NotChecked=0, Total=812 [2022-02-15 03:02:18,578 INFO L933 BasicCegarLoop]: 278 mSDtfsCounter, 1060 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 1624 mSolverCounterSat, 349 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 1979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 1624 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.3s IncrementalHoareTripleChecker+Time [2022-02-15 03:02:18,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1072 Valid, 659 Invalid, 1979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 1624 Invalid, 6 Unknown, 0 Unchecked, 18.3s Time] [2022-02-15 03:02:18,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2022-02-15 03:02:18,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 387. [2022-02-15 03:02:18,628 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) [2022-02-15 03:02:18,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 512 transitions. [2022-02-15 03:02:18,630 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 512 transitions. Word has length 73 [2022-02-15 03:02:18,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:02:18,630 INFO L470 AbstractCegarLoop]: Abstraction has 387 states and 512 transitions. [2022-02-15 03:02:18,630 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) [2022-02-15 03:02:18,630 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 512 transitions. [2022-02-15 03:02:18,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-15 03:02:18,631 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:02:18,631 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] [2022-02-15 03:02:18,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-02-15 03:02:18,631 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:02:18,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:02:18,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1821545128, now seen corresponding path program 1 times [2022-02-15 03:02:18,632 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:02:18,632 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [900687539] [2022-02-15 03:02:18,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:02:18,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:02:18,639 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:02:18,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:18,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:02:18,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:18,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:02:18,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:18,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:02:18,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:18,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:02:18,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:18,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:02:18,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:18,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:02:18,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:18,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-15 03:02:18,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:18,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 03:02:18,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:18,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-15 03:02:18,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:18,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:02:18,920 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:02:18,920 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [900687539] [2022-02-15 03:02:18,920 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [900687539] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:02:18,920 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:02:18,920 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-15 03:02:18,920 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448552746] [2022-02-15 03:02:18,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:02:18,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 03:02:18,921 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:02:18,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 03:02:18,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-02-15 03:02:18,921 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) [2022-02-15 03:02:20,894 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:02:22,914 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:02:24,930 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:02:26,954 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:02:29,941 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:02:31,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:02:31,785 INFO L93 Difference]: Finished difference Result 419 states and 554 transitions. [2022-02-15 03:02:31,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-15 03:02:31,785 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 [2022-02-15 03:02:31,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:02:31,788 INFO L225 Difference]: With dead ends: 419 [2022-02-15 03:02:31,788 INFO L226 Difference]: Without dead ends: 396 [2022-02-15 03:02:31,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2022-02-15 03:02:31,789 INFO L933 BasicCegarLoop]: 272 mSDtfsCounter, 744 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 245 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2022-02-15 03:02:31,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [754 Valid, 455 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [245 Valid, 865 Invalid, 4 Unknown, 0 Unchecked, 12.5s Time] [2022-02-15 03:02:31,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2022-02-15 03:02:31,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 381. [2022-02-15 03:02:31,851 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) [2022-02-15 03:02:31,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 501 transitions. [2022-02-15 03:02:31,853 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 501 transitions. Word has length 74 [2022-02-15 03:02:31,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:02:31,853 INFO L470 AbstractCegarLoop]: Abstraction has 381 states and 501 transitions. [2022-02-15 03:02:31,853 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) [2022-02-15 03:02:31,853 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 501 transitions. [2022-02-15 03:02:31,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-15 03:02:31,854 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:02:31,854 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] [2022-02-15 03:02:31,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-02-15 03:02:31,855 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:02:31,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:02:31,855 INFO L85 PathProgramCache]: Analyzing trace with hash 937494245, now seen corresponding path program 1 times [2022-02-15 03:02:31,855 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:02:31,855 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424074334] [2022-02-15 03:02:31,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:02:31,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:02:31,864 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:02:31,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:32,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:02:32,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:32,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:02:32,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:32,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:02:32,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:32,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:02:32,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:32,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:02:32,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:32,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:02:32,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:32,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-15 03:02:32,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:32,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-02-15 03:02:32,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:32,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-02-15 03:02:32,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:32,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:02:32,199 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:02:32,199 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424074334] [2022-02-15 03:02:32,199 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [424074334] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:02:32,199 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:02:32,199 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-15 03:02:32,199 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812384052] [2022-02-15 03:02:32,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:02:32,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 03:02:32,199 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:02:32,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 03:02:32,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-02-15 03:02:32,200 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) [2022-02-15 03:02:33,652 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:02:35,676 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:02:37,694 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:02:39,716 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:02:41,741 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 [] [2022-02-15 03:02:45,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:02:45,940 INFO L93 Difference]: Finished difference Result 437 states and 561 transitions. [2022-02-15 03:02:45,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-15 03:02:45,940 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 [2022-02-15 03:02:45,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:02:45,942 INFO L225 Difference]: With dead ends: 437 [2022-02-15 03:02:45,943 INFO L226 Difference]: Without dead ends: 374 [2022-02-15 03:02:45,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2022-02-15 03:02:45,944 INFO L933 BasicCegarLoop]: 310 mSDtfsCounter, 1060 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 963 mSolverCounterSat, 339 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1070 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 1306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 339 IncrementalHoareTripleChecker+Valid, 963 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2022-02-15 03:02:45,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1070 Valid, 626 Invalid, 1306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [339 Valid, 963 Invalid, 4 Unknown, 0 Unchecked, 13.1s Time] [2022-02-15 03:02:45,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-02-15 03:02:46,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 345. [2022-02-15 03:02:46,025 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) [2022-02-15 03:02:46,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 447 transitions. [2022-02-15 03:02:46,026 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 447 transitions. Word has length 77 [2022-02-15 03:02:46,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:02:46,026 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 447 transitions. [2022-02-15 03:02:46,027 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) [2022-02-15 03:02:46,027 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 447 transitions. [2022-02-15 03:02:46,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-15 03:02:46,028 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:02:46,028 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] [2022-02-15 03:02:46,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-02-15 03:02:46,029 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:02:46,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:02:46,029 INFO L85 PathProgramCache]: Analyzing trace with hash 641442499, now seen corresponding path program 1 times [2022-02-15 03:02:46,029 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:02:46,029 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2093757758] [2022-02-15 03:02:46,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:02:46,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:02:46,043 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:02:46,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:46,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:02:46,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:46,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:02:46,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:46,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:02:46,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:46,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:02:46,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:46,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:02:46,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:46,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:02:46,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:46,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-15 03:02:46,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:46,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 03:02:46,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:46,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-15 03:02:46,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:46,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:02:46,482 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:02:46,482 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2093757758] [2022-02-15 03:02:46,482 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2093757758] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:02:46,482 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:02:46,482 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-15 03:02:46,482 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829289282] [2022-02-15 03:02:46,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:02:46,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 03:02:46,483 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:02:46,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 03:02:46,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-02-15 03:02:46,483 INFO L87 Difference]: Start difference. First operand 345 states and 447 transitions. Second operand has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-02-15 03:02:48,584 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:02:52,599 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 [] [2022-02-15 03:02:54,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:02:54,035 INFO L93 Difference]: Finished difference Result 648 states and 854 transitions. [2022-02-15 03:02:54,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-15 03:02:54,036 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 75 [2022-02-15 03:02:54,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:02:54,038 INFO L225 Difference]: With dead ends: 648 [2022-02-15 03:02:54,039 INFO L226 Difference]: Without dead ends: 358 [2022-02-15 03:02:54,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2022-02-15 03:02:54,041 INFO L933 BasicCegarLoop]: 283 mSDtfsCounter, 859 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 1349 mSolverCounterSat, 308 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 1659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 1349 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-02-15 03:02:54,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [862 Valid, 646 Invalid, 1659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 1349 Invalid, 2 Unknown, 0 Unchecked, 7.3s Time] [2022-02-15 03:02:54,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2022-02-15 03:02:54,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 341. [2022-02-15 03:02:54,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 271 states have (on average 1.3505535055350553) internal successors, (366), 275 states have internal predecessors, (366), 38 states have call successors, (38), 30 states have call predecessors, (38), 31 states have return successors, (38), 35 states have call predecessors, (38), 33 states have call successors, (38) [2022-02-15 03:02:54,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 442 transitions. [2022-02-15 03:02:54,134 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 442 transitions. Word has length 75 [2022-02-15 03:02:54,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:02:54,134 INFO L470 AbstractCegarLoop]: Abstraction has 341 states and 442 transitions. [2022-02-15 03:02:54,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-02-15 03:02:54,135 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 442 transitions. [2022-02-15 03:02:54,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-02-15 03:02:54,137 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:02:54,137 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] [2022-02-15 03:02:54,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-02-15 03:02:54,137 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:02:54,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:02:54,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1009683107, now seen corresponding path program 1 times [2022-02-15 03:02:54,137 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:02:54,137 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [12768355] [2022-02-15 03:02:54,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:02:54,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:02:54,146 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:02:54,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:54,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:02:54,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:54,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:02:54,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:54,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:02:54,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:54,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:02:54,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:54,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:02:54,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:54,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:02:54,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:54,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-15 03:02:54,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:54,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 03:02:54,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:54,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-02-15 03:02:54,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:54,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-02-15 03:02:54,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:54,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-15 03:02:54,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:54,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:02:54,575 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:02:54,575 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [12768355] [2022-02-15 03:02:54,575 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [12768355] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:02:54,575 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:02:54,575 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-15 03:02:54,575 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540173270] [2022-02-15 03:02:54,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:02:54,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 03:02:54,576 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:02:54,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 03:02:54,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-02-15 03:02:54,576 INFO L87 Difference]: Start difference. First operand 341 states and 442 transitions. Second operand has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (13), 9 states have call predecessors, (13), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-02-15 03:02:56,657 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 [] [2022-02-15 03:02:59,045 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 [] [2022-02-15 03:03:02,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:03:02,293 INFO L93 Difference]: Finished difference Result 415 states and 531 transitions. [2022-02-15 03:03:02,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-15 03:03:02,293 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (13), 9 states have call predecessors, (13), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 88 [2022-02-15 03:03:02,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:03:02,295 INFO L225 Difference]: With dead ends: 415 [2022-02-15 03:03:02,295 INFO L226 Difference]: Without dead ends: 357 [2022-02-15 03:03:02,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2022-02-15 03:03:02,298 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 596 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 1717 mSolverCounterSat, 229 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 1947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 1717 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-02-15 03:03:02,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [599 Valid, 716 Invalid, 1947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 1717 Invalid, 1 Unknown, 0 Unchecked, 7.4s Time] [2022-02-15 03:03:02,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2022-02-15 03:03:02,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 340. [2022-02-15 03:03:02,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 270 states have (on average 1.337037037037037) internal successors, (361), 274 states have internal predecessors, (361), 38 states have call successors, (38), 30 states have call predecessors, (38), 31 states have return successors, (38), 35 states have call predecessors, (38), 33 states have call successors, (38) [2022-02-15 03:03:02,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 437 transitions. [2022-02-15 03:03:02,355 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 437 transitions. Word has length 88 [2022-02-15 03:03:02,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:03:02,355 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 437 transitions. [2022-02-15 03:03:02,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (13), 9 states have call predecessors, (13), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-02-15 03:03:02,355 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 437 transitions. [2022-02-15 03:03:02,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-02-15 03:03:02,356 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:03:02,356 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] [2022-02-15 03:03:02,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-02-15 03:03:02,356 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:03:02,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:03:02,357 INFO L85 PathProgramCache]: Analyzing trace with hash 831316094, now seen corresponding path program 1 times [2022-02-15 03:03:02,357 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:03:02,357 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1201598025] [2022-02-15 03:03:02,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:03:02,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:03:02,367 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:03:02,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:02,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:03:02,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:02,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:03:02,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:02,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:03:02,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:02,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:03:02,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:02,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:03:02,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:02,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:03:02,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:02,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-15 03:03:02,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:02,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 03:03:02,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:02,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-02-15 03:03:02,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:02,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-02-15 03:03:02,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:02,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-15 03:03:02,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:02,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:03:02,754 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:03:02,754 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1201598025] [2022-02-15 03:03:02,754 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1201598025] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:03:02,754 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:03:02,754 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-15 03:03:02,754 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050472798] [2022-02-15 03:03:02,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:03:02,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-15 03:03:02,755 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:03:02,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-15 03:03:02,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-02-15 03:03:02,755 INFO L87 Difference]: Start difference. First operand 340 states and 437 transitions. Second operand has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 7 states have internal predecessors, (65), 4 states have call successors, (13), 9 states have call predecessors, (13), 4 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-02-15 03:03:04,961 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 [] [2022-02-15 03:03:08,514 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:03:10,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:03:10,628 INFO L93 Difference]: Finished difference Result 420 states and 533 transitions. [2022-02-15 03:03:10,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-15 03:03:10,628 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 7 states have internal predecessors, (65), 4 states have call successors, (13), 9 states have call predecessors, (13), 4 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 89 [2022-02-15 03:03:10,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:03:10,645 INFO L225 Difference]: With dead ends: 420 [2022-02-15 03:03:10,645 INFO L226 Difference]: Without dead ends: 377 [2022-02-15 03:03:10,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=260, Invalid=930, Unknown=0, NotChecked=0, Total=1190 [2022-02-15 03:03:10,647 INFO L933 BasicCegarLoop]: 301 mSDtfsCounter, 780 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 1968 mSolverCounterSat, 280 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 2250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 280 IncrementalHoareTripleChecker+Valid, 1968 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-02-15 03:03:10,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [785 Valid, 748 Invalid, 2250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [280 Valid, 1968 Invalid, 2 Unknown, 0 Unchecked, 7.1s Time] [2022-02-15 03:03:10,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-02-15 03:03:10,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 340. [2022-02-15 03:03:10,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 270 states have (on average 1.3296296296296297) internal successors, (359), 274 states have internal predecessors, (359), 38 states have call successors, (38), 30 states have call predecessors, (38), 31 states have return successors, (37), 35 states have call predecessors, (37), 33 states have call successors, (37) [2022-02-15 03:03:10,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 434 transitions. [2022-02-15 03:03:10,741 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 434 transitions. Word has length 89 [2022-02-15 03:03:10,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:03:10,741 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 434 transitions. [2022-02-15 03:03:10,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 7 states have internal predecessors, (65), 4 states have call successors, (13), 9 states have call predecessors, (13), 4 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-02-15 03:03:10,741 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 434 transitions. [2022-02-15 03:03:10,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-02-15 03:03:10,742 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:03:10,742 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] [2022-02-15 03:03:10,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-02-15 03:03:10,742 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:03:10,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:03:10,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1700761598, now seen corresponding path program 1 times [2022-02-15 03:03:10,743 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:03:10,743 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [220465532] [2022-02-15 03:03:10,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:03:10,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:03:10,753 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:03:10,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:10,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:03:10,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:10,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:03:10,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:10,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:03:10,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:10,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:03:10,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:10,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:03:10,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:10,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:03:10,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:10,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-15 03:03:10,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:11,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 03:03:11,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:11,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-02-15 03:03:11,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:11,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-02-15 03:03:11,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:11,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:03:11,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:11,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:03:11,071 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:03:11,071 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [220465532] [2022-02-15 03:03:11,071 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [220465532] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:03:11,071 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:03:11,071 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-15 03:03:11,071 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958760025] [2022-02-15 03:03:11,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:03:11,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 03:03:11,071 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:03:11,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 03:03:11,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-02-15 03:03:11,072 INFO L87 Difference]: Start difference. First operand 340 states and 434 transitions. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (13), 9 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-02-15 03:03:13,130 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:03:15,688 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 [] [2022-02-15 03:03:16,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:03:16,536 INFO L93 Difference]: Finished difference Result 376 states and 477 transitions. [2022-02-15 03:03:16,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-15 03:03:16,538 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (13), 9 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 89 [2022-02-15 03:03:16,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:03:16,554 INFO L225 Difference]: With dead ends: 376 [2022-02-15 03:03:16,554 INFO L226 Difference]: Without dead ends: 353 [2022-02-15 03:03:16,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2022-02-15 03:03:16,555 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 973 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 331 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 331 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-02-15 03:03:16,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [976 Valid, 472 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [331 Valid, 629 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2022-02-15 03:03:16,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2022-02-15 03:03:16,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 331. [2022-02-15 03:03:16,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 264 states have (on average 1.3333333333333333) internal successors, (352), 268 states have internal predecessors, (352), 37 states have call successors, (37), 29 states have call predecessors, (37), 29 states have return successors, (35), 33 states have call predecessors, (35), 32 states have call successors, (35) [2022-02-15 03:03:16,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 424 transitions. [2022-02-15 03:03:16,611 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 424 transitions. Word has length 89 [2022-02-15 03:03:16,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:03:16,613 INFO L470 AbstractCegarLoop]: Abstraction has 331 states and 424 transitions. [2022-02-15 03:03:16,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (13), 9 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-02-15 03:03:16,613 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 424 transitions. [2022-02-15 03:03:16,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-02-15 03:03:16,614 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:03:16,614 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] [2022-02-15 03:03:16,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-02-15 03:03:16,614 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:03:16,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:03:16,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1579644163, now seen corresponding path program 1 times [2022-02-15 03:03:16,614 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:03:16,615 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1149106733] [2022-02-15 03:03:16,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:03:16,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:03:16,627 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:03:16,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:16,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:03:16,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:16,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:03:16,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:16,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:03:16,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:16,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:03:16,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:16,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:03:16,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:16,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:03:16,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:16,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-15 03:03:16,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:16,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 03:03:16,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:16,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-02-15 03:03:16,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:16,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-02-15 03:03:16,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:17,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-15 03:03:17,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:17,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:03:17,073 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:03:17,073 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1149106733] [2022-02-15 03:03:17,073 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1149106733] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:03:17,074 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:03:17,074 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-15 03:03:17,074 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209189417] [2022-02-15 03:03:17,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:03:17,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-15 03:03:17,074 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:03:17,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-15 03:03:17,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-02-15 03:03:17,075 INFO L87 Difference]: Start difference. First operand 331 states and 424 transitions. Second operand has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 6 states have internal predecessors, (67), 2 states have call successors, (13), 9 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 1 states have call successors, (11) [2022-02-15 03:03:19,172 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:03:21,194 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:03:23,207 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:03:26,034 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:03:28,058 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:03:30,076 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:03:32,092 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:03:34,107 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:03:36,134 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:03:38,159 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:03:40,590 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:03:43,173 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:03:45,253 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:03:49,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:03:49,008 INFO L93 Difference]: Finished difference Result 396 states and 502 transitions. [2022-02-15 03:03:49,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-15 03:03:49,008 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 6 states have internal predecessors, (67), 2 states have call successors, (13), 9 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 1 states have call successors, (11) Word has length 91 [2022-02-15 03:03:49,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:03:49,024 INFO L225 Difference]: With dead ends: 396 [2022-02-15 03:03:49,025 INFO L226 Difference]: Without dead ends: 352 [2022-02-15 03:03:49,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2022-02-15 03:03:49,039 INFO L933 BasicCegarLoop]: 269 mSDtfsCounter, 611 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 2271 mSolverCounterSat, 221 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 2502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 2271 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.6s IncrementalHoareTripleChecker+Time [2022-02-15 03:03:49,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [615 Valid, 942 Invalid, 2502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 2271 Invalid, 10 Unknown, 0 Unchecked, 31.6s Time] [2022-02-15 03:03:49,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2022-02-15 03:03:49,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 330. [2022-02-15 03:03:49,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 263 states have (on average 1.3307984790874525) internal successors, (350), 267 states have internal predecessors, (350), 37 states have call successors, (37), 29 states have call predecessors, (37), 29 states have return successors, (35), 33 states have call predecessors, (35), 32 states have call successors, (35) [2022-02-15 03:03:49,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 422 transitions. [2022-02-15 03:03:49,125 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 422 transitions. Word has length 91 [2022-02-15 03:03:49,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:03:49,126 INFO L470 AbstractCegarLoop]: Abstraction has 330 states and 422 transitions. [2022-02-15 03:03:49,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 6 states have internal predecessors, (67), 2 states have call successors, (13), 9 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 1 states have call successors, (11) [2022-02-15 03:03:49,126 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 422 transitions. [2022-02-15 03:03:49,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-02-15 03:03:49,127 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:03:49,127 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] [2022-02-15 03:03:49,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-02-15 03:03:49,127 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:03:49,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:03:49,127 INFO L85 PathProgramCache]: Analyzing trace with hash -231347989, now seen corresponding path program 1 times [2022-02-15 03:03:49,127 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:03:49,127 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [327577124] [2022-02-15 03:03:49,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:03:49,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:03:49,138 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:03:49,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:49,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:03:49,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:49,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:03:49,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:49,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:03:49,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:49,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:03:49,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:49,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:03:49,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:49,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:03:49,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:49,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-15 03:03:49,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:49,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 03:03:49,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:49,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-02-15 03:03:49,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:49,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-02-15 03:03:49,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:49,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:03:49,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:49,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:03:49,528 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:03:49,528 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [327577124] [2022-02-15 03:03:49,528 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [327577124] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:03:49,528 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:03:49,528 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 03:03:49,528 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964123488] [2022-02-15 03:03:49,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:03:49,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 03:03:49,528 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:03:49,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 03:03:49,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-02-15 03:03:49,529 INFO L87 Difference]: Start difference. First operand 330 states and 422 transitions. Second operand has 16 states, 16 states have (on average 4.25) internal successors, (68), 7 states have internal predecessors, (68), 2 states have call successors, (13), 9 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 1 states have call successors, (11) [2022-02-15 03:03:51,609 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:03:54,965 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:03:59,430 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:04:01,837 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:04:04,233 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:04:07,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:04:07,139 INFO L93 Difference]: Finished difference Result 473 states and 604 transitions. [2022-02-15 03:04:07,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-15 03:04:07,140 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.25) internal successors, (68), 7 states have internal predecessors, (68), 2 states have call successors, (13), 9 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 1 states have call successors, (11) Word has length 92 [2022-02-15 03:04:07,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:04:07,143 INFO L225 Difference]: With dead ends: 473 [2022-02-15 03:04:07,143 INFO L226 Difference]: Without dead ends: 365 [2022-02-15 03:04:07,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=117, Invalid=585, Unknown=0, NotChecked=0, Total=702 [2022-02-15 03:04:07,145 INFO L933 BasicCegarLoop]: 266 mSDtfsCounter, 777 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 2287 mSolverCounterSat, 281 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 927 SdHoareTripleChecker+Invalid, 2570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 2287 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.9s IncrementalHoareTripleChecker+Time [2022-02-15 03:04:07,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [787 Valid, 927 Invalid, 2570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 2287 Invalid, 2 Unknown, 0 Unchecked, 16.9s Time] [2022-02-15 03:04:07,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2022-02-15 03:04:07,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 334. [2022-02-15 03:04:07,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 267 states have (on average 1.3295880149812733) internal successors, (355), 272 states have internal predecessors, (355), 36 states have call successors, (36), 29 states have call predecessors, (36), 30 states have return successors, (36), 32 states have call predecessors, (36), 31 states have call successors, (36) [2022-02-15 03:04:07,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 427 transitions. [2022-02-15 03:04:07,260 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 427 transitions. Word has length 92 [2022-02-15 03:04:07,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:04:07,263 INFO L470 AbstractCegarLoop]: Abstraction has 334 states and 427 transitions. [2022-02-15 03:04:07,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.25) internal successors, (68), 7 states have internal predecessors, (68), 2 states have call successors, (13), 9 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 1 states have call successors, (11) [2022-02-15 03:04:07,264 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 427 transitions. [2022-02-15 03:04:07,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-02-15 03:04:07,266 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:04:07,266 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] [2022-02-15 03:04:07,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-02-15 03:04:07,266 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:04:07,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:04:07,267 INFO L85 PathProgramCache]: Analyzing trace with hash -386853991, now seen corresponding path program 1 times [2022-02-15 03:04:07,267 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:04:07,267 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2121121265] [2022-02-15 03:04:07,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:04:07,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:04:07,284 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:04:07,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:07,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:04:07,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:07,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:04:07,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:07,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:04:07,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:07,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:04:07,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:07,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:04:07,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:07,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:04:07,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:07,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-15 03:04:07,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:07,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 03:04:07,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:07,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-02-15 03:04:07,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:07,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-02-15 03:04:07,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:07,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-15 03:04:07,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:07,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:04:07,882 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:04:07,883 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2121121265] [2022-02-15 03:04:07,883 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2121121265] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:04:07,883 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:04:07,883 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-15 03:04:07,883 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361363545] [2022-02-15 03:04:07,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:04:07,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 03:04:07,887 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:04:07,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 03:04:07,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-02-15 03:04:07,888 INFO L87 Difference]: Start difference. First operand 334 states and 427 transitions. Second operand has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (13), 9 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2022-02-15 03:04:10,085 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 [] [2022-02-15 03:04:14,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:04:14,873 INFO L93 Difference]: Finished difference Result 427 states and 543 transitions. [2022-02-15 03:04:14,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-15 03:04:14,873 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (13), 9 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) Word has length 92 [2022-02-15 03:04:14,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:04:14,875 INFO L225 Difference]: With dead ends: 427 [2022-02-15 03:04:14,875 INFO L226 Difference]: Without dead ends: 374 [2022-02-15 03:04:14,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=210, Invalid=602, Unknown=0, NotChecked=0, Total=812 [2022-02-15 03:04:14,876 INFO L933 BasicCegarLoop]: 276 mSDtfsCounter, 997 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 1351 mSolverCounterSat, 326 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1012 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 1678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 1351 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-02-15 03:04:14,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1012 Valid, 596 Invalid, 1678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 1351 Invalid, 1 Unknown, 0 Unchecked, 6.1s Time] [2022-02-15 03:04:14,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-02-15 03:04:14,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 325. [2022-02-15 03:04:14,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 259 states have (on average 1.3243243243243243) internal successors, (343), 263 states have internal predecessors, (343), 36 states have call successors, (36), 29 states have call predecessors, (36), 29 states have return successors, (34), 32 states have call predecessors, (34), 31 states have call successors, (34) [2022-02-15 03:04:14,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 413 transitions. [2022-02-15 03:04:14,986 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 413 transitions. Word has length 92 [2022-02-15 03:04:14,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:04:14,986 INFO L470 AbstractCegarLoop]: Abstraction has 325 states and 413 transitions. [2022-02-15 03:04:14,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (13), 9 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2022-02-15 03:04:14,987 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 413 transitions. [2022-02-15 03:04:14,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-02-15 03:04:14,988 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:04:14,988 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] [2022-02-15 03:04:14,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-02-15 03:04:14,988 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:04:14,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:04:14,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1555434456, now seen corresponding path program 1 times [2022-02-15 03:04:14,988 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:04:14,989 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1048641288] [2022-02-15 03:04:14,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:04:14,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:04:15,002 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:04:15,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:15,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:04:15,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:15,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:04:15,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:15,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:04:15,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:15,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:04:15,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:15,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:04:15,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:15,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:04:15,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:15,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-15 03:04:15,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:15,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 03:04:15,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:15,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-02-15 03:04:15,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:15,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-02-15 03:04:15,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:15,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-02-15 03:04:15,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:15,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:04:15,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:15,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-02-15 03:04:15,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:15,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:04:15,333 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:04:15,334 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1048641288] [2022-02-15 03:04:15,334 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1048641288] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:04:15,334 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:04:15,334 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-15 03:04:15,334 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003650649] [2022-02-15 03:04:15,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:04:15,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 03:04:15,334 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:04:15,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 03:04:15,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-02-15 03:04:15,335 INFO L87 Difference]: Start difference. First operand 325 states and 413 transitions. Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (17), 9 states have call predecessors, (17), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-02-15 03:04:17,456 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:04:18,903 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:04:20,067 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 [] [2022-02-15 03:04:21,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:04:21,122 INFO L93 Difference]: Finished difference Result 414 states and 524 transitions. [2022-02-15 03:04:21,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-15 03:04:21,123 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (17), 9 states have call predecessors, (17), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 97 [2022-02-15 03:04:21,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:04:21,124 INFO L225 Difference]: With dead ends: 414 [2022-02-15 03:04:21,125 INFO L226 Difference]: Without dead ends: 355 [2022-02-15 03:04:21,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2022-02-15 03:04:21,126 INFO L933 BasicCegarLoop]: 265 mSDtfsCounter, 829 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 294 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 832 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 294 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-02-15 03:04:21,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [832 Valid, 493 Invalid, 949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [294 Valid, 654 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2022-02-15 03:04:21,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2022-02-15 03:04:21,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 323. [2022-02-15 03:04:21,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 258 states have (on average 1.313953488372093) internal successors, (339), 261 states have internal predecessors, (339), 35 states have call successors, (35), 29 states have call predecessors, (35), 29 states have return successors, (34), 32 states have call predecessors, (34), 31 states have call successors, (34) [2022-02-15 03:04:21,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 408 transitions. [2022-02-15 03:04:21,201 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 408 transitions. Word has length 97 [2022-02-15 03:04:21,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:04:21,201 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 408 transitions. [2022-02-15 03:04:21,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (17), 9 states have call predecessors, (17), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-02-15 03:04:21,201 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 408 transitions. [2022-02-15 03:04:21,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-02-15 03:04:21,202 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:04:21,202 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] [2022-02-15 03:04:21,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-02-15 03:04:21,202 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:04:21,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:04:21,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1824291982, now seen corresponding path program 1 times [2022-02-15 03:04:21,202 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:04:21,203 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67813541] [2022-02-15 03:04:21,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:04:21,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:04:21,214 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:04:21,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:21,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:04:21,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:21,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:04:21,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:21,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:04:21,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:21,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:04:21,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:21,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:04:21,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:21,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:04:21,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:21,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-15 03:04:21,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:21,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 03:04:21,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:21,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-02-15 03:04:21,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:21,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-02-15 03:04:21,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:21,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-15 03:04:21,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:21,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:04:21,721 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:04:21,721 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67813541] [2022-02-15 03:04:21,721 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [67813541] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:04:21,722 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:04:21,722 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-15 03:04:21,722 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364435320] [2022-02-15 03:04:21,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:04:21,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 03:04:21,722 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:04:21,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 03:04:21,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-02-15 03:04:21,723 INFO L87 Difference]: Start difference. First operand 323 states and 408 transitions. Second operand has 12 states, 12 states have (on average 5.75) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (13), 9 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-02-15 03:04:23,801 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 [] [2022-02-15 03:04:27,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:04:27,001 INFO L93 Difference]: Finished difference Result 369 states and 462 transitions. [2022-02-15 03:04:27,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-15 03:04:27,003 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.75) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (13), 9 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 93 [2022-02-15 03:04:27,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:04:27,004 INFO L225 Difference]: With dead ends: 369 [2022-02-15 03:04:27,004 INFO L226 Difference]: Without dead ends: 344 [2022-02-15 03:04:27,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2022-02-15 03:04:27,020 INFO L933 BasicCegarLoop]: 257 mSDtfsCounter, 850 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 267 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 1083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-02-15 03:04:27,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [859 Valid, 528 Invalid, 1083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 815 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2022-02-15 03:04:27,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2022-02-15 03:04:27,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 322. [2022-02-15 03:04:27,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 257 states have (on average 1.311284046692607) internal successors, (337), 260 states have internal predecessors, (337), 35 states have call successors, (35), 29 states have call predecessors, (35), 29 states have return successors, (34), 32 states have call predecessors, (34), 31 states have call successors, (34) [2022-02-15 03:04:27,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 406 transitions. [2022-02-15 03:04:27,095 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 406 transitions. Word has length 93 [2022-02-15 03:04:27,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:04:27,095 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 406 transitions. [2022-02-15 03:04:27,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.75) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (13), 9 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-02-15 03:04:27,096 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 406 transitions. [2022-02-15 03:04:27,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-02-15 03:04:27,096 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:04:27,096 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] [2022-02-15 03:04:27,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-02-15 03:04:27,097 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:04:27,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:04:27,097 INFO L85 PathProgramCache]: Analyzing trace with hash 531223474, now seen corresponding path program 1 times [2022-02-15 03:04:27,097 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:04:27,097 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1019229786] [2022-02-15 03:04:27,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:04:27,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:04:27,108 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:04:27,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:27,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:04:27,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:27,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:04:27,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:27,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:04:27,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:27,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:04:27,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:27,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:04:27,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:27,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:04:27,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:27,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-15 03:04:27,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:27,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 03:04:27,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:27,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-02-15 03:04:27,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:27,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-02-15 03:04:27,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:27,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-15 03:04:27,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:27,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:04:27,483 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:04:27,483 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1019229786] [2022-02-15 03:04:27,483 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1019229786] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:04:27,483 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:04:27,483 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-15 03:04:27,483 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956095222] [2022-02-15 03:04:27,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:04:27,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-15 03:04:27,485 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:04:27,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-15 03:04:27,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-02-15 03:04:27,486 INFO L87 Difference]: Start difference. First operand 322 states and 406 transitions. Second operand has 15 states, 15 states have (on average 4.6) internal successors, (69), 8 states have internal predecessors, (69), 4 states have call successors, (13), 9 states have call predecessors, (13), 4 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-02-15 03:04:29,701 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 [] [2022-02-15 03:04:33,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:04:33,906 INFO L93 Difference]: Finished difference Result 351 states and 441 transitions. [2022-02-15 03:04:33,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-15 03:04:33,906 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.6) internal successors, (69), 8 states have internal predecessors, (69), 4 states have call successors, (13), 9 states have call predecessors, (13), 4 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 93 [2022-02-15 03:04:33,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:04:33,907 INFO L225 Difference]: With dead ends: 351 [2022-02-15 03:04:33,907 INFO L226 Difference]: Without dead ends: 203 [2022-02-15 03:04:33,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=198, Invalid=672, Unknown=0, NotChecked=0, Total=870 [2022-02-15 03:04:33,908 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 1015 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 1575 mSolverCounterSat, 334 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1020 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 1910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 334 IncrementalHoareTripleChecker+Valid, 1575 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-02-15 03:04:33,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1020 Valid, 540 Invalid, 1910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [334 Valid, 1575 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2022-02-15 03:04:33,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-02-15 03:04:33,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 182. [2022-02-15 03:04:33,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 138 states have (on average 1.2391304347826086) internal successors, (171), 141 states have internal predecessors, (171), 23 states have call successors, (23), 21 states have call predecessors, (23), 20 states have return successors, (21), 19 states have call predecessors, (21), 19 states have call successors, (21) [2022-02-15 03:04:33,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 215 transitions. [2022-02-15 03:04:33,958 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 215 transitions. Word has length 93 [2022-02-15 03:04:33,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:04:33,959 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 215 transitions. [2022-02-15 03:04:33,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.6) internal successors, (69), 8 states have internal predecessors, (69), 4 states have call successors, (13), 9 states have call predecessors, (13), 4 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-02-15 03:04:33,959 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 215 transitions. [2022-02-15 03:04:33,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-02-15 03:04:33,959 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:04:33,959 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] [2022-02-15 03:04:33,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-02-15 03:04:33,960 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:04:33,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:04:33,960 INFO L85 PathProgramCache]: Analyzing trace with hash -121095912, now seen corresponding path program 1 times [2022-02-15 03:04:33,960 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:04:33,960 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1988001866] [2022-02-15 03:04:33,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:04:33,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:04:33,974 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:04:34,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:34,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:04:34,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:34,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:04:34,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:34,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:04:34,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:34,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:04:34,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:34,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:04:34,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:34,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:04:34,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:34,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-15 03:04:34,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:34,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 03:04:34,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:34,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-02-15 03:04:34,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:34,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-02-15 03:04:34,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:34,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-02-15 03:04:34,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:34,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 03:04:34,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:34,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:04:34,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:34,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:04:34,400 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:04:34,400 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1988001866] [2022-02-15 03:04:34,400 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1988001866] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:04:34,400 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:04:34,400 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-15 03:04:34,400 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467051518] [2022-02-15 03:04:34,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:04:34,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 03:04:34,400 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:04:34,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 03:04:34,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-02-15 03:04:34,401 INFO L87 Difference]: Start difference. First operand 182 states and 215 transitions. Second operand has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (17), 9 states have call predecessors, (17), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-02-15 03:04:36,454 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 [] [2022-02-15 03:04:39,147 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 [] [2022-02-15 03:04:39,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:04:39,732 INFO L93 Difference]: Finished difference Result 298 states and 365 transitions. [2022-02-15 03:04:39,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-15 03:04:39,733 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (17), 9 states have call predecessors, (17), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 101 [2022-02-15 03:04:39,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:04:39,734 INFO L225 Difference]: With dead ends: 298 [2022-02-15 03:04:39,734 INFO L226 Difference]: Without dead ends: 235 [2022-02-15 03:04:39,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2022-02-15 03:04:39,735 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 413 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 233 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-02-15 03:04:39,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [418 Valid, 373 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 720 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2022-02-15 03:04:39,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2022-02-15 03:04:39,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 195. [2022-02-15 03:04:39,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 149 states have (on average 1.221476510067114) internal successors, (182), 152 states have internal predecessors, (182), 23 states have call successors, (23), 21 states have call predecessors, (23), 22 states have return successors, (23), 21 states have call predecessors, (23), 19 states have call successors, (23) [2022-02-15 03:04:39,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 228 transitions. [2022-02-15 03:04:39,785 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 228 transitions. Word has length 101 [2022-02-15 03:04:39,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:04:39,785 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 228 transitions. [2022-02-15 03:04:39,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (17), 9 states have call predecessors, (17), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-02-15 03:04:39,785 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 228 transitions. [2022-02-15 03:04:39,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-02-15 03:04:39,786 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:04:39,786 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] [2022-02-15 03:04:39,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-02-15 03:04:39,786 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:04:39,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:04:39,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1896043663, now seen corresponding path program 1 times [2022-02-15 03:04:39,786 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:04:39,786 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [403078369] [2022-02-15 03:04:39,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:04:39,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:04:39,799 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:04:39,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:39,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:04:39,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:39,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:04:39,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:39,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:04:40,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:40,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:04:40,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:40,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:04:40,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:40,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:04:40,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:40,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-15 03:04:40,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:40,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 03:04:40,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:40,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-02-15 03:04:40,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:40,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-02-15 03:04:40,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:40,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-02-15 03:04:40,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:40,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 03:04:40,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:40,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:04:40,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:40,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:04:40,213 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:04:40,213 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [403078369] [2022-02-15 03:04:40,213 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [403078369] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:04:40,213 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:04:40,213 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-15 03:04:40,213 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967408107] [2022-02-15 03:04:40,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:04:40,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 03:04:40,214 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:04:40,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 03:04:40,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-02-15 03:04:40,214 INFO L87 Difference]: Start difference. First operand 195 states and 228 transitions. Second operand has 10 states, 10 states have (on average 7.2) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (17), 10 states have call predecessors, (17), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-15 03:04:42,283 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 [] [2022-02-15 03:04:44,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:04:44,600 INFO L93 Difference]: Finished difference Result 433 states and 516 transitions. [2022-02-15 03:04:44,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-15 03:04:44,601 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (17), 10 states have call predecessors, (17), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 102 [2022-02-15 03:04:44,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:04:44,602 INFO L225 Difference]: With dead ends: 433 [2022-02-15 03:04:44,603 INFO L226 Difference]: Without dead ends: 404 [2022-02-15 03:04:44,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=109, Invalid=233, Unknown=0, NotChecked=0, Total=342 [2022-02-15 03:04:44,603 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 571 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 312 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 312 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-02-15 03:04:44,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [577 Valid, 308 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [312 Valid, 420 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2022-02-15 03:04:44,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2022-02-15 03:04:44,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 337. [2022-02-15 03:04:44,716 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) [2022-02-15 03:04:44,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 399 transitions. [2022-02-15 03:04:44,718 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 399 transitions. Word has length 102 [2022-02-15 03:04:44,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:04:44,718 INFO L470 AbstractCegarLoop]: Abstraction has 337 states and 399 transitions. [2022-02-15 03:04:44,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (17), 10 states have call predecessors, (17), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-15 03:04:44,718 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 399 transitions. [2022-02-15 03:04:44,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-02-15 03:04:44,719 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:04:44,719 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] [2022-02-15 03:04:44,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-02-15 03:04:44,719 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:04:44,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:04:44,720 INFO L85 PathProgramCache]: Analyzing trace with hash -623916271, now seen corresponding path program 1 times [2022-02-15 03:04:44,720 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:04:44,720 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1109987350] [2022-02-15 03:04:44,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:04:44,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:04:44,737 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:04:45,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:45,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:04:45,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:45,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:04:45,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:45,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:04:45,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:45,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:04:45,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:45,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:04:45,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:45,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:04:45,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:45,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-15 03:04:45,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:45,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 03:04:45,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:45,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-02-15 03:04:45,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:45,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-02-15 03:04:45,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:45,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-02-15 03:04:45,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:45,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 03:04:45,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:45,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:04:45,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:45,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:04:45,579 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:04:45,579 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1109987350] [2022-02-15 03:04:45,580 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1109987350] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:04:45,580 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:04:45,580 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-15 03:04:45,580 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720181629] [2022-02-15 03:04:45,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:04:45,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-15 03:04:45,581 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:04:45,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-15 03:04:45,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-02-15 03:04:45,582 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) [2022-02-15 03:04:47,662 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:04:50,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:04:50,294 INFO L93 Difference]: Finished difference Result 675 states and 810 transitions. [2022-02-15 03:04:50,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-15 03:04:50,294 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 [2022-02-15 03:04:50,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:04:50,296 INFO L225 Difference]: With dead ends: 675 [2022-02-15 03:04:50,297 INFO L226 Difference]: Without dead ends: 389 [2022-02-15 03:04:50,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2022-02-15 03:04:50,298 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 144 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 74 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-02-15 03:04:50,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 357 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 571 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2022-02-15 03:04:50,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2022-02-15 03:04:50,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 339. [2022-02-15 03:04:50,426 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) [2022-02-15 03:04:50,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 401 transitions. [2022-02-15 03:04:50,427 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 401 transitions. Word has length 102 [2022-02-15 03:04:50,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:04:50,427 INFO L470 AbstractCegarLoop]: Abstraction has 339 states and 401 transitions. [2022-02-15 03:04:50,427 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) [2022-02-15 03:04:50,427 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 401 transitions. [2022-02-15 03:04:50,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-02-15 03:04:50,428 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:04:50,428 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] [2022-02-15 03:04:50,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-02-15 03:04:50,428 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:04:50,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:04:50,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1023672093, now seen corresponding path program 1 times [2022-02-15 03:04:50,429 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:04:50,429 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1709028504] [2022-02-15 03:04:50,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:04:50,468 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 03:04:50,469 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 03:04:50,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:04:50,523 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:04:51,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:51,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:04:51,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:51,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:04:51,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:51,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:04:51,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:51,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:04:51,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:51,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:04:51,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:51,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:04:51,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:51,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-15 03:04:51,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:51,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 03:04:51,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:51,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-02-15 03:04:51,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:51,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 03:04:51,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:51,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-02-15 03:04:51,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:51,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 03:04:51,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:51,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:04:51,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:51,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:04:51,591 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:04:51,591 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1709028504] [2022-02-15 03:04:51,591 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1709028504] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:04:51,591 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:04:51,591 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-15 03:04:51,592 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436901010] [2022-02-15 03:04:51,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:04:51,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 03:04:51,592 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:04:51,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 03:04:51,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-02-15 03:04:51,593 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) [2022-02-15 03:04:53,686 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 [] [2022-02-15 03:04:56,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:04:56,705 INFO L93 Difference]: Finished difference Result 677 states and 812 transitions. [2022-02-15 03:04:56,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-15 03:04:56,705 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 [2022-02-15 03:04:56,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:04:56,707 INFO L225 Difference]: With dead ends: 677 [2022-02-15 03:04:56,707 INFO L226 Difference]: Without dead ends: 391 [2022-02-15 03:04:56,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2022-02-15 03:04:56,709 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 200 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 108 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-02-15 03:04:56,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 434 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 760 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2022-02-15 03:04:56,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2022-02-15 03:04:56,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 341. [2022-02-15 03:04:56,826 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) [2022-02-15 03:04:56,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 403 transitions. [2022-02-15 03:04:56,827 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 403 transitions. Word has length 103 [2022-02-15 03:04:56,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:04:56,827 INFO L470 AbstractCegarLoop]: Abstraction has 341 states and 403 transitions. [2022-02-15 03:04:56,827 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) [2022-02-15 03:04:56,827 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 403 transitions. [2022-02-15 03:04:56,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-02-15 03:04:56,828 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:04:56,828 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] [2022-02-15 03:04:56,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-02-15 03:04:56,829 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:04:56,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:04:56,830 INFO L85 PathProgramCache]: Analyzing trace with hash 559303825, now seen corresponding path program 2 times [2022-02-15 03:04:56,830 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:04:56,830 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1571724112] [2022-02-15 03:04:56,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:04:56,831 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 03:04:56,831 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 03:04:56,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:04:56,848 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:04:57,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:57,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:04:57,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:57,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:04:57,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:57,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:04:57,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:57,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:04:57,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:57,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:04:57,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:57,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:04:57,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:57,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-15 03:04:57,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:57,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-02-15 03:04:57,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:57,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-02-15 03:04:57,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:57,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-02-15 03:04:57,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:57,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-02-15 03:04:57,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:57,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 03:04:57,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:57,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:04:57,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:57,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:04:57,658 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:04:57,658 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1571724112] [2022-02-15 03:04:57,658 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1571724112] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:04:57,658 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:04:57,658 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-15 03:04:57,674 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841676302] [2022-02-15 03:04:57,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:04:57,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 03:04:57,676 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:04:57,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 03:04:57,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-02-15 03:04:57,676 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) [2022-02-15 03:04:59,764 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:05:03,013 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:05:03,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:05:03,932 INFO L93 Difference]: Finished difference Result 679 states and 814 transitions. [2022-02-15 03:05:03,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-15 03:05:03,933 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 [2022-02-15 03:05:03,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:05:03,935 INFO L225 Difference]: With dead ends: 679 [2022-02-15 03:05:03,935 INFO L226 Difference]: Without dead ends: 393 [2022-02-15 03:05:03,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2022-02-15 03:05:03,936 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 258 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 149 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-02-15 03:05:03,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 404 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 623 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2022-02-15 03:05:03,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-02-15 03:05:04,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 343. [2022-02-15 03:05:04,085 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) [2022-02-15 03:05:04,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 405 transitions. [2022-02-15 03:05:04,086 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 405 transitions. Word has length 104 [2022-02-15 03:05:04,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:05:04,086 INFO L470 AbstractCegarLoop]: Abstraction has 343 states and 405 transitions. [2022-02-15 03:05:04,086 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) [2022-02-15 03:05:04,086 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 405 transitions. [2022-02-15 03:05:04,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-02-15 03:05:04,087 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:05:04,088 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] [2022-02-15 03:05:04,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-02-15 03:05:04,088 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:05:04,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:05:04,088 INFO L85 PathProgramCache]: Analyzing trace with hash -951210595, now seen corresponding path program 3 times [2022-02-15 03:05:04,088 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:05:04,088 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1016085653] [2022-02-15 03:05:04,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:05:04,089 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 03:05:04,089 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 03:05:04,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:05:04,106 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:05:04,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:04,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:05:04,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:04,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:05:04,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:04,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:05:04,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:04,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:05:04,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:04,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:05:04,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:04,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:05:04,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:04,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-15 03:05:04,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:04,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-15 03:05:04,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:04,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-02-15 03:05:04,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:04,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-02-15 03:05:04,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:04,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-02-15 03:05:04,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:04,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 03:05:04,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:04,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:05:04,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:04,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:05:04,865 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:05:04,865 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1016085653] [2022-02-15 03:05:04,865 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1016085653] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:05:04,865 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:05:04,865 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-15 03:05:04,865 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540427602] [2022-02-15 03:05:04,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:05:04,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-15 03:05:04,865 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:05:04,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-15 03:05:04,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-02-15 03:05:04,866 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) [2022-02-15 03:05:06,945 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:05:09,495 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:05:11,620 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:05:12,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:05:12,468 INFO L93 Difference]: Finished difference Result 681 states and 816 transitions. [2022-02-15 03:05:12,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-15 03:05:12,468 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 [2022-02-15 03:05:12,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:05:12,470 INFO L225 Difference]: With dead ends: 681 [2022-02-15 03:05:12,470 INFO L226 Difference]: Without dead ends: 395 [2022-02-15 03:05:12,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2022-02-15 03:05:12,471 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 200 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 115 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-02-15 03:05:12,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 481 Invalid, 1015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 899 Invalid, 1 Unknown, 0 Unchecked, 7.0s Time] [2022-02-15 03:05:12,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2022-02-15 03:05:12,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 345. [2022-02-15 03:05:12,580 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) [2022-02-15 03:05:12,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 407 transitions. [2022-02-15 03:05:12,581 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 407 transitions. Word has length 105 [2022-02-15 03:05:12,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:05:12,581 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 407 transitions. [2022-02-15 03:05:12,581 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) [2022-02-15 03:05:12,581 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 407 transitions. [2022-02-15 03:05:12,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-02-15 03:05:12,582 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:05:12,582 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] [2022-02-15 03:05:12,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-02-15 03:05:12,582 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:05:12,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:05:12,583 INFO L85 PathProgramCache]: Analyzing trace with hash -532517359, now seen corresponding path program 4 times [2022-02-15 03:05:12,583 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:05:12,583 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [394454164] [2022-02-15 03:05:12,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:05:12,585 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 03:05:12,585 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 03:05:12,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:05:12,601 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:05:12,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:13,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:05:13,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:13,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:05:13,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:13,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:05:13,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:13,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:05:13,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:13,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:05:13,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:13,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:05:13,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:13,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-15 03:05:13,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:13,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-02-15 03:05:13,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:13,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-02-15 03:05:13,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:13,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-02-15 03:05:13,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:13,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-02-15 03:05:13,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:13,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 03:05:13,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:13,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:05:13,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:13,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:05:13,542 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:05:13,547 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [394454164] [2022-02-15 03:05:13,547 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [394454164] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:05:13,547 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:05:13,547 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-15 03:05:13,547 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905195419] [2022-02-15 03:05:13,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:05:13,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-15 03:05:13,548 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:05:13,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-15 03:05:13,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-02-15 03:05:13,549 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) [2022-02-15 03:05:15,635 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 [] [2022-02-15 03:05:18,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:05:18,981 INFO L93 Difference]: Finished difference Result 683 states and 818 transitions. [2022-02-15 03:05:18,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-15 03:05:18,982 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 [2022-02-15 03:05:18,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:05:18,984 INFO L225 Difference]: With dead ends: 683 [2022-02-15 03:05:18,984 INFO L226 Difference]: Without dead ends: 397 [2022-02-15 03:05:18,995 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 [2022-02-15 03:05:19,003 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 212 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 108 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-02-15 03:05:19,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 421 Invalid, 923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 814 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2022-02-15 03:05:19,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2022-02-15 03:05:19,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 347. [2022-02-15 03:05:19,206 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) [2022-02-15 03:05:19,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 409 transitions. [2022-02-15 03:05:19,207 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 409 transitions. Word has length 106 [2022-02-15 03:05:19,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:05:19,207 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 409 transitions. [2022-02-15 03:05:19,207 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) [2022-02-15 03:05:19,207 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 409 transitions. [2022-02-15 03:05:19,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-02-15 03:05:19,208 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:05:19,208 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] [2022-02-15 03:05:19,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-02-15 03:05:19,209 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:05:19,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:05:19,209 INFO L85 PathProgramCache]: Analyzing trace with hash -437928931, now seen corresponding path program 5 times [2022-02-15 03:05:19,209 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:05:19,209 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1037109455] [2022-02-15 03:05:19,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:05:19,210 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 03:05:19,210 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 03:05:19,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:05:19,232 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:05:19,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:19,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:05:19,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:19,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:05:19,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:19,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:05:19,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:19,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:05:19,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:19,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:05:19,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:19,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:05:19,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:19,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-15 03:05:19,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:19,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-15 03:05:19,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:20,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-02-15 03:05:20,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:20,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-02-15 03:05:20,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:20,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-02-15 03:05:20,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:20,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 03:05:20,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:20,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:05:20,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:20,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:05:20,108 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:05:20,108 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1037109455] [2022-02-15 03:05:20,108 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1037109455] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:05:20,108 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:05:20,108 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 03:05:20,108 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990814321] [2022-02-15 03:05:20,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:05:20,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 03:05:20,111 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:05:20,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 03:05:20,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-02-15 03:05:20,112 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) [2022-02-15 03:05:22,196 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 [] [2022-02-15 03:05:24,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:05:24,476 INFO L93 Difference]: Finished difference Result 685 states and 820 transitions. [2022-02-15 03:05:24,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-15 03:05:24,476 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 [2022-02-15 03:05:24,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:05:24,478 INFO L225 Difference]: With dead ends: 685 [2022-02-15 03:05:24,478 INFO L226 Difference]: Without dead ends: 399 [2022-02-15 03:05:24,479 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=139, Invalid=511, Unknown=0, NotChecked=0, Total=650 [2022-02-15 03:05:24,479 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 201 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 123 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-02-15 03:05:24,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 390 Invalid, 817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 693 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2022-02-15 03:05:24,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2022-02-15 03:05:24,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 349. [2022-02-15 03:05:24,596 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) [2022-02-15 03:05:24,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 411 transitions. [2022-02-15 03:05:24,597 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 411 transitions. Word has length 107 [2022-02-15 03:05:24,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:05:24,597 INFO L470 AbstractCegarLoop]: Abstraction has 349 states and 411 transitions. [2022-02-15 03:05:24,598 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) [2022-02-15 03:05:24,598 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 411 transitions. [2022-02-15 03:05:24,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-02-15 03:05:24,598 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:05:24,598 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] [2022-02-15 03:05:24,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-02-15 03:05:24,599 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:05:24,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:05:24,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1800654959, now seen corresponding path program 6 times [2022-02-15 03:05:24,599 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:05:24,599 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [680599952] [2022-02-15 03:05:24,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:05:24,600 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 03:05:24,600 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 03:05:24,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:05:24,617 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:05:24,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:25,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:05:25,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:25,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:05:25,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:25,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:05:25,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:25,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:05:25,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:25,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:05:25,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:25,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:05:25,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:25,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-15 03:05:25,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:25,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-02-15 03:05:25,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:25,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 03:05:25,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:25,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-02-15 03:05:25,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:25,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-02-15 03:05:25,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:25,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 03:05:25,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:25,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:05:25,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:25,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:05:25,511 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:05:25,511 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [680599952] [2022-02-15 03:05:25,511 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [680599952] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:05:25,512 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:05:25,512 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 03:05:25,512 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85919188] [2022-02-15 03:05:25,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:05:25,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 03:05:25,512 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:05:25,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 03:05:25,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2022-02-15 03:05:25,513 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) [2022-02-15 03:05:27,599 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 [] [2022-02-15 03:05:31,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:05:31,106 INFO L93 Difference]: Finished difference Result 687 states and 822 transitions. [2022-02-15 03:05:31,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-15 03:05:31,107 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 [2022-02-15 03:05:31,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:05:31,109 INFO L225 Difference]: With dead ends: 687 [2022-02-15 03:05:31,109 INFO L226 Difference]: Without dead ends: 401 [2022-02-15 03:05:31,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=152, Invalid=604, Unknown=0, NotChecked=0, Total=756 [2022-02-15 03:05:31,111 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 201 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 124 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-02-15 03:05:31,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 405 Invalid, 894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 769 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2022-02-15 03:05:31,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2022-02-15 03:05:31,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 351. [2022-02-15 03:05:31,338 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) [2022-02-15 03:05:31,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 413 transitions. [2022-02-15 03:05:31,340 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 413 transitions. Word has length 108 [2022-02-15 03:05:31,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:05:31,340 INFO L470 AbstractCegarLoop]: Abstraction has 351 states and 413 transitions. [2022-02-15 03:05:31,340 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) [2022-02-15 03:05:31,340 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 413 transitions. [2022-02-15 03:05:31,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-02-15 03:05:31,341 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:05:31,342 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] [2022-02-15 03:05:31,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-02-15 03:05:31,342 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:05:31,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:05:31,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1095488867, now seen corresponding path program 7 times [2022-02-15 03:05:31,343 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:05:31,343 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1877303214] [2022-02-15 03:05:31,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:05:31,344 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 03:05:31,344 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 03:05:31,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:05:31,370 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:05:31,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:31,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:05:31,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:31,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:05:31,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:31,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:05:31,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:31,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:05:31,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:31,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:05:32,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:32,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:05:32,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:32,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-15 03:05:32,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:32,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-02-15 03:05:32,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:32,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-02-15 03:05:32,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:32,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-02-15 03:05:32,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:32,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 03:05:32,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:32,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 03:05:32,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:32,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:05:32,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:32,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:05:32,423 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:05:32,423 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1877303214] [2022-02-15 03:05:32,423 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1877303214] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:05:32,423 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:05:32,423 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-02-15 03:05:32,423 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914564947] [2022-02-15 03:05:32,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:05:32,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 03:05:32,425 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:05:32,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 03:05:32,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-02-15 03:05:32,426 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) [2022-02-15 03:05:34,001 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:05:35,416 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:05:37,435 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:05:39,463 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:05:41,483 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:05:43,503 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:05:46,529 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:05:48,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:05:48,446 INFO L93 Difference]: Finished difference Result 689 states and 824 transitions. [2022-02-15 03:05:48,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-15 03:05:48,446 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 [2022-02-15 03:05:48,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:05:48,455 INFO L225 Difference]: With dead ends: 689 [2022-02-15 03:05:48,456 INFO L226 Difference]: Without dead ends: 403 [2022-02-15 03:05:48,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=165, Invalid=705, Unknown=0, NotChecked=0, Total=870 [2022-02-15 03:05:48,468 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 270 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 156 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.0s IncrementalHoareTripleChecker+Time [2022-02-15 03:05:48,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 389 Invalid, 880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 720 Invalid, 4 Unknown, 0 Unchecked, 15.0s Time] [2022-02-15 03:05:48,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2022-02-15 03:05:48,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 353. [2022-02-15 03:05:48,609 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) [2022-02-15 03:05:48,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 415 transitions. [2022-02-15 03:05:48,611 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 415 transitions. Word has length 109 [2022-02-15 03:05:48,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:05:48,611 INFO L470 AbstractCegarLoop]: Abstraction has 353 states and 415 transitions. [2022-02-15 03:05:48,611 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) [2022-02-15 03:05:48,611 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 415 transitions. [2022-02-15 03:05:48,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-02-15 03:05:48,639 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:05:48,639 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] [2022-02-15 03:05:48,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-02-15 03:05:48,640 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:05:48,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:05:48,640 INFO L85 PathProgramCache]: Analyzing trace with hash -710176495, now seen corresponding path program 8 times [2022-02-15 03:05:48,640 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:05:48,640 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952907747] [2022-02-15 03:05:48,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:05:48,642 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 03:05:48,642 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 03:05:48,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:05:48,669 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:05:49,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:49,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:05:49,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:49,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:05:49,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:49,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:05:49,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:49,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:05:49,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:49,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:05:49,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:49,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:05:49,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:49,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-15 03:05:49,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:49,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:05:49,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:49,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-02-15 03:05:49,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:49,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-02-15 03:05:49,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:49,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-02-15 03:05:49,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:49,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 03:05:49,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:49,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:05:49,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:49,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:05:49,906 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:05:49,906 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [952907747] [2022-02-15 03:05:49,906 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [952907747] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:05:49,907 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:05:49,907 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-02-15 03:05:49,907 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969921770] [2022-02-15 03:05:49,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:05:49,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-15 03:05:49,907 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:05:49,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-15 03:05:49,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2022-02-15 03:05:49,908 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) [2022-02-15 03:05:51,993 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 [] [2022-02-15 03:05:55,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:05:55,889 INFO L93 Difference]: Finished difference Result 691 states and 826 transitions. [2022-02-15 03:05:55,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-15 03:05:55,890 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 [2022-02-15 03:05:55,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:05:55,891 INFO L225 Difference]: With dead ends: 691 [2022-02-15 03:05:55,891 INFO L226 Difference]: Without dead ends: 405 [2022-02-15 03:05:55,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=178, Invalid=814, Unknown=0, NotChecked=0, Total=992 [2022-02-15 03:05:55,892 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 440 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 1375 mSolverCounterSat, 287 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 1663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 287 IncrementalHoareTripleChecker+Valid, 1375 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-02-15 03:05:55,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [443 Valid, 627 Invalid, 1663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [287 Valid, 1375 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2022-02-15 03:05:55,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2022-02-15 03:05:56,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 355. [2022-02-15 03:05:56,063 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) [2022-02-15 03:05:56,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 417 transitions. [2022-02-15 03:05:56,074 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 417 transitions. Word has length 110 [2022-02-15 03:05:56,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:05:56,074 INFO L470 AbstractCegarLoop]: Abstraction has 355 states and 417 transitions. [2022-02-15 03:05:56,074 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) [2022-02-15 03:05:56,074 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 417 transitions. [2022-02-15 03:05:56,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-02-15 03:05:56,088 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:05:56,088 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] [2022-02-15 03:05:56,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-02-15 03:05:56,088 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:05:56,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:05:56,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1650394851, now seen corresponding path program 9 times [2022-02-15 03:05:56,089 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:05:56,089 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1381714822] [2022-02-15 03:05:56,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:05:56,090 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 03:05:56,090 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 03:05:56,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:05:56,125 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:05:56,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:56,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:05:56,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:56,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:05:56,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:56,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:05:56,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:56,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:05:56,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:56,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:05:56,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:56,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:05:56,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:56,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-15 03:05:56,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:56,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-02-15 03:05:56,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:56,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-02-15 03:05:56,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:56,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 03:05:56,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:56,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-02-15 03:05:56,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:56,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 03:05:56,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:56,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:05:56,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:56,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:05:56,978 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:05:56,978 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1381714822] [2022-02-15 03:05:56,978 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1381714822] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:05:56,978 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:05:56,979 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-15 03:05:56,979 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043046647] [2022-02-15 03:05:56,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:05:56,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-15 03:05:56,980 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:05:56,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-15 03:05:56,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2022-02-15 03:05:56,980 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) [2022-02-15 03:05:59,042 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:06:02,343 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:06:04,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:06:04,876 INFO L93 Difference]: Finished difference Result 693 states and 828 transitions. [2022-02-15 03:06:04,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-15 03:06:04,876 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 [2022-02-15 03:06:04,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:06:04,878 INFO L225 Difference]: With dead ends: 693 [2022-02-15 03:06:04,878 INFO L226 Difference]: Without dead ends: 407 [2022-02-15 03:06:04,879 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 [2022-02-15 03:06:04,880 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 201 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 134 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 1146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-02-15 03:06:04,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 484 Invalid, 1146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1010 Invalid, 2 Unknown, 0 Unchecked, 7.0s Time] [2022-02-15 03:06:04,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2022-02-15 03:06:05,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 357. [2022-02-15 03:06:05,019 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) [2022-02-15 03:06:05,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 419 transitions. [2022-02-15 03:06:05,020 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 419 transitions. Word has length 111 [2022-02-15 03:06:05,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:06:05,021 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 419 transitions. [2022-02-15 03:06:05,021 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) [2022-02-15 03:06:05,021 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 419 transitions. [2022-02-15 03:06:05,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-02-15 03:06:05,022 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:06:05,022 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] [2022-02-15 03:06:05,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-02-15 03:06:05,022 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:06:05,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:06:05,022 INFO L85 PathProgramCache]: Analyzing trace with hash -732392815, now seen corresponding path program 10 times [2022-02-15 03:06:05,022 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:06:05,023 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1677766546] [2022-02-15 03:06:05,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:06:05,024 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 03:06:05,024 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 03:06:05,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:06:05,049 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:06:05,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:05,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:06:05,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:05,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:06:05,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:05,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:06:05,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:05,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:06:05,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:05,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:06:05,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:05,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:06:05,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:05,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-15 03:06:05,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:05,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-02-15 03:06:05,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:05,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-02-15 03:06:05,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:05,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-02-15 03:06:05,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:05,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-02-15 03:06:05,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:05,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 03:06:05,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:05,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:06:05,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:05,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:06:05,830 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:06:05,830 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1677766546] [2022-02-15 03:06:05,830 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1677766546] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:06:05,830 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:06:05,830 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-15 03:06:05,830 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564429189] [2022-02-15 03:06:05,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:06:05,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-15 03:06:05,830 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:06:05,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-15 03:06:05,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2022-02-15 03:06:05,831 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) [2022-02-15 03:06:07,904 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:06:13,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:06:13,963 INFO L93 Difference]: Finished difference Result 695 states and 830 transitions. [2022-02-15 03:06:13,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-15 03:06:13,964 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 [2022-02-15 03:06:13,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:06:13,966 INFO L225 Difference]: With dead ends: 695 [2022-02-15 03:06:13,966 INFO L226 Difference]: Without dead ends: 409 [2022-02-15 03:06:13,967 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 [2022-02-15 03:06:13,968 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 328 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 1593 mSolverCounterSat, 208 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 1802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 1593 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-02-15 03:06:13,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 703 Invalid, 1802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 1593 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2022-02-15 03:06:13,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2022-02-15 03:06:14,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 359. [2022-02-15 03:06:14,151 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) [2022-02-15 03:06:14,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 421 transitions. [2022-02-15 03:06:14,153 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 421 transitions. Word has length 112 [2022-02-15 03:06:14,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:06:14,153 INFO L470 AbstractCegarLoop]: Abstraction has 359 states and 421 transitions. [2022-02-15 03:06:14,153 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) [2022-02-15 03:06:14,153 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 421 transitions. [2022-02-15 03:06:14,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-02-15 03:06:14,154 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:06:14,154 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] [2022-02-15 03:06:14,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-02-15 03:06:14,154 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:06:14,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:06:14,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1955866525, now seen corresponding path program 11 times [2022-02-15 03:06:14,155 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:06:14,155 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1504384850] [2022-02-15 03:06:14,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:06:14,156 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 03:06:14,156 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 03:06:14,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:06:14,199 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:06:14,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:14,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:06:14,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:14,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:06:14,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:14,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:06:14,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:14,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:06:14,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:14,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:06:14,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:14,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:06:14,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:14,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-15 03:06:14,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:15,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-02-15 03:06:15,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:15,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-02-15 03:06:15,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:15,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-02-15 03:06:15,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:15,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-02-15 03:06:15,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:15,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 03:06:15,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:15,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:06:15,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:15,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:06:15,364 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:06:15,364 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1504384850] [2022-02-15 03:06:15,364 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1504384850] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:06:15,365 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:06:15,365 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-02-15 03:06:15,365 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84778658] [2022-02-15 03:06:15,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:06:15,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-15 03:06:15,365 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:06:15,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-15 03:06:15,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2022-02-15 03:06:15,366 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) [2022-02-15 03:06:17,449 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 [] [2022-02-15 03:06:21,364 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:06:23,478 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:06:24,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:06:24,187 INFO L93 Difference]: Finished difference Result 697 states and 832 transitions. [2022-02-15 03:06:24,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-15 03:06:24,188 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 [2022-02-15 03:06:24,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:06:24,189 INFO L225 Difference]: With dead ends: 697 [2022-02-15 03:06:24,190 INFO L226 Difference]: Without dead ends: 411 [2022-02-15 03:06:24,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=217, Invalid=1189, Unknown=0, NotChecked=0, Total=1406 [2022-02-15 03:06:24,191 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 259 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 186 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 1246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-02-15 03:06:24,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [262 Valid, 484 Invalid, 1246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 1059 Invalid, 1 Unknown, 0 Unchecked, 7.7s Time] [2022-02-15 03:06:24,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2022-02-15 03:06:24,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 361. [2022-02-15 03:06:24,333 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) [2022-02-15 03:06:24,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 423 transitions. [2022-02-15 03:06:24,334 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 423 transitions. Word has length 113 [2022-02-15 03:06:24,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:06:24,334 INFO L470 AbstractCegarLoop]: Abstraction has 361 states and 423 transitions. [2022-02-15 03:06:24,334 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) [2022-02-15 03:06:24,334 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 423 transitions. [2022-02-15 03:06:24,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-02-15 03:06:24,335 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:06:24,335 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] [2022-02-15 03:06:24,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-02-15 03:06:24,335 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:06:24,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:06:24,335 INFO L85 PathProgramCache]: Analyzing trace with hash -607439855, now seen corresponding path program 12 times [2022-02-15 03:06:24,335 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:06:24,335 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [221899991] [2022-02-15 03:06:24,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:06:24,337 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 03:06:24,337 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 03:06:24,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:06:24,362 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:06:24,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:24,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:06:24,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:24,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:06:24,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:24,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:06:24,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:24,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:06:24,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:24,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:06:24,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:24,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:06:24,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:24,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-15 03:06:24,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:25,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-02-15 03:06:25,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:25,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-02-15 03:06:25,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:25,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-02-15 03:06:25,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:25,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-02-15 03:06:25,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:25,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 03:06:25,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:25,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:06:25,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:25,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:06:25,355 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:06:25,355 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [221899991] [2022-02-15 03:06:25,356 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [221899991] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:06:25,356 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:06:25,356 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-02-15 03:06:25,356 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004327013] [2022-02-15 03:06:25,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:06:25,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-15 03:06:25,356 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:06:25,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-15 03:06:25,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2022-02-15 03:06:25,357 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) [2022-02-15 03:06:27,435 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:06:33,443 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:06:34,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:06:34,601 INFO L93 Difference]: Finished difference Result 699 states and 834 transitions. [2022-02-15 03:06:34,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-15 03:06:34,602 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 [2022-02-15 03:06:34,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:06:34,603 INFO L225 Difference]: With dead ends: 699 [2022-02-15 03:06:34,604 INFO L226 Difference]: Without dead ends: 413 [2022-02-15 03:06:34,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=230, Invalid=1330, Unknown=0, NotChecked=0, Total=1560 [2022-02-15 03:06:34,605 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 212 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 1996 mSolverCounterSat, 122 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 2120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1996 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-02-15 03:06:34,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 780 Invalid, 2120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1996 Invalid, 2 Unknown, 0 Unchecked, 8.0s Time] [2022-02-15 03:06:34,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2022-02-15 03:06:34,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 363. [2022-02-15 03:06:34,754 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) [2022-02-15 03:06:34,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 425 transitions. [2022-02-15 03:06:34,754 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 425 transitions. Word has length 114 [2022-02-15 03:06:34,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:06:34,755 INFO L470 AbstractCegarLoop]: Abstraction has 363 states and 425 transitions. [2022-02-15 03:06:34,755 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) [2022-02-15 03:06:34,755 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 425 transitions. [2022-02-15 03:06:34,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-02-15 03:06:34,755 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:06:34,756 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] [2022-02-15 03:06:34,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-02-15 03:06:34,756 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:06:34,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:06:34,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1534440989, now seen corresponding path program 13 times [2022-02-15 03:06:34,757 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:06:34,757 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1857784180] [2022-02-15 03:06:34,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:06:34,758 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 03:06:34,758 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 03:06:34,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:06:34,778 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:06:35,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:35,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:06:35,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:35,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:06:35,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:35,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:06:35,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:35,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:06:35,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:35,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:06:35,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:35,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:06:35,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:35,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-15 03:06:35,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:36,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-02-15 03:06:36,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:36,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-02-15 03:06:36,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:36,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-02-15 03:06:36,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:36,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-02-15 03:06:36,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:36,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 03:06:36,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:36,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:06:36,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:36,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:06:36,394 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:06:36,394 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1857784180] [2022-02-15 03:06:36,394 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1857784180] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:06:36,394 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:06:36,394 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-02-15 03:06:36,394 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404551151] [2022-02-15 03:06:36,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:06:36,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-15 03:06:36,395 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:06:36,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-15 03:06:36,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2022-02-15 03:06:36,396 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) [2022-02-15 03:06:38,505 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:06:47,599 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:06:48,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:06:48,773 INFO L93 Difference]: Finished difference Result 701 states and 836 transitions. [2022-02-15 03:06:48,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-15 03:06:48,774 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 [2022-02-15 03:06:48,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:06:48,776 INFO L225 Difference]: With dead ends: 701 [2022-02-15 03:06:48,776 INFO L226 Difference]: Without dead ends: 415 [2022-02-15 03:06:48,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=243, Invalid=1479, Unknown=0, NotChecked=0, Total=1722 [2022-02-15 03:06:48,777 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 213 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 1977 mSolverCounterSat, 126 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 2104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1977 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-02-15 03:06:48,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 768 Invalid, 2104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1977 Invalid, 1 Unknown, 0 Unchecked, 11.2s Time] [2022-02-15 03:06:48,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2022-02-15 03:06:48,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 365. [2022-02-15 03:06:48,943 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) [2022-02-15 03:06:48,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 427 transitions. [2022-02-15 03:06:48,944 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 427 transitions. Word has length 115 [2022-02-15 03:06:48,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:06:48,944 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 427 transitions. [2022-02-15 03:06:48,944 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) [2022-02-15 03:06:48,944 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 427 transitions. [2022-02-15 03:06:48,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-02-15 03:06:48,945 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:06:48,945 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] [2022-02-15 03:06:48,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-02-15 03:06:48,946 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:06:48,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:06:48,946 INFO L85 PathProgramCache]: Analyzing trace with hash -786729583, now seen corresponding path program 14 times [2022-02-15 03:06:48,946 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:06:48,946 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [978880709] [2022-02-15 03:06:48,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:06:48,948 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 03:06:48,948 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 03:06:48,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:06:48,980 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:06:49,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:49,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:06:49,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:49,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:06:49,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:49,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:06:49,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:49,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:06:49,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:49,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:06:49,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:49,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:06:49,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:49,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-15 03:06:49,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:50,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-15 03:06:50,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:50,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 03:06:50,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:50,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-02-15 03:06:50,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:50,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-02-15 03:06:50,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:50,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 03:06:50,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:50,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:06:50,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:50,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:06:50,373 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:06:50,373 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [978880709] [2022-02-15 03:06:50,373 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [978880709] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:06:50,373 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:06:50,373 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-02-15 03:06:50,373 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141679893] [2022-02-15 03:06:50,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:06:50,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-15 03:06:50,374 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:06:50,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-15 03:06:50,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=529, Unknown=0, NotChecked=0, Total=600 [2022-02-15 03:06:50,375 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) [2022-02-15 03:06:52,478 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:06:56,946 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:07:01,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:07:01,252 INFO L93 Difference]: Finished difference Result 703 states and 838 transitions. [2022-02-15 03:07:01,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-15 03:07:01,252 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 [2022-02-15 03:07:01,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:07:01,255 INFO L225 Difference]: With dead ends: 703 [2022-02-15 03:07:01,256 INFO L226 Difference]: Without dead ends: 417 [2022-02-15 03:07:01,256 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 [2022-02-15 03:07:01,257 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 212 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 2366 mSolverCounterSat, 126 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 906 SdHoareTripleChecker+Invalid, 2493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 2366 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-02-15 03:07:01,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 906 Invalid, 2493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 2366 Invalid, 1 Unknown, 0 Unchecked, 9.7s Time] [2022-02-15 03:07:01,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2022-02-15 03:07:01,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 367. [2022-02-15 03:07:01,434 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) [2022-02-15 03:07:01,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 429 transitions. [2022-02-15 03:07:01,435 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 429 transitions. Word has length 116 [2022-02-15 03:07:01,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:07:01,435 INFO L470 AbstractCegarLoop]: Abstraction has 367 states and 429 transitions. [2022-02-15 03:07:01,435 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) [2022-02-15 03:07:01,436 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 429 transitions. [2022-02-15 03:07:01,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-02-15 03:07:01,436 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:07:01,436 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] [2022-02-15 03:07:01,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-02-15 03:07:01,436 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:07:01,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:07:01,437 INFO L85 PathProgramCache]: Analyzing trace with hash 271426717, now seen corresponding path program 15 times [2022-02-15 03:07:01,437 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:07:01,437 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1921776881] [2022-02-15 03:07:01,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:07:01,438 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 03:07:01,438 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 03:07:01,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:07:01,460 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:07:01,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:01,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:07:01,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:01,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:07:01,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:01,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:07:02,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:02,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:07:02,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:02,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:07:02,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:02,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:07:02,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:02,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-15 03:07:02,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:02,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-02-15 03:07:02,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:02,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-02-15 03:07:02,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:02,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-02-15 03:07:02,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:02,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 03:07:02,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:02,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 03:07:02,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:02,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:07:02,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:02,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:07:02,645 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:07:02,645 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1921776881] [2022-02-15 03:07:02,645 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1921776881] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:07:02,645 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:07:02,646 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-02-15 03:07:02,646 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528990103] [2022-02-15 03:07:02,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:07:02,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-15 03:07:02,646 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:07:02,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-15 03:07:02,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=576, Unknown=0, NotChecked=0, Total=650 [2022-02-15 03:07:02,649 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) [2022-02-15 03:07:04,749 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:07:09,758 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:07:13,574 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:07:14,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:07:14,606 INFO L93 Difference]: Finished difference Result 705 states and 840 transitions. [2022-02-15 03:07:14,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-15 03:07:14,607 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 [2022-02-15 03:07:14,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:07:14,608 INFO L225 Difference]: With dead ends: 705 [2022-02-15 03:07:14,608 INFO L226 Difference]: Without dead ends: 419 [2022-02-15 03:07:14,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=269, Invalid=1801, Unknown=0, NotChecked=0, Total=2070 [2022-02-15 03:07:14,610 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 271 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 2150 mSolverCounterSat, 180 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 2331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 2150 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2022-02-15 03:07:14,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 830 Invalid, 2331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 2150 Invalid, 1 Unknown, 0 Unchecked, 10.4s Time] [2022-02-15 03:07:14,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2022-02-15 03:07:14,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 369. [2022-02-15 03:07:14,816 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) [2022-02-15 03:07:14,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 431 transitions. [2022-02-15 03:07:14,817 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 431 transitions. Word has length 117 [2022-02-15 03:07:14,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:07:14,817 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 431 transitions. [2022-02-15 03:07:14,817 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) [2022-02-15 03:07:14,817 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 431 transitions. [2022-02-15 03:07:14,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-02-15 03:07:14,818 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:07:14,818 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] [2022-02-15 03:07:14,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-02-15 03:07:14,822 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:07:14,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:07:14,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1285466351, now seen corresponding path program 16 times [2022-02-15 03:07:14,823 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:07:14,823 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859911452] [2022-02-15 03:07:14,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:07:14,824 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 03:07:14,825 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 03:07:14,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:07:14,852 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:07:15,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:15,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:07:15,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:15,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:07:15,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:15,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:07:15,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:15,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:07:15,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:15,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:07:15,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:15,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:07:15,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:15,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-15 03:07:15,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:15,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 03:07:15,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:16,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-02-15 03:07:16,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:16,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-02-15 03:07:16,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:16,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-02-15 03:07:16,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:16,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 03:07:16,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:16,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:07:16,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:16,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:07:16,091 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:07:16,091 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859911452] [2022-02-15 03:07:16,091 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [859911452] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:07:16,091 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:07:16,091 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-02-15 03:07:16,091 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600083518] [2022-02-15 03:07:16,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:07:16,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-15 03:07:16,091 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:07:16,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-15 03:07:16,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=625, Unknown=0, NotChecked=0, Total=702 [2022-02-15 03:07:16,092 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) [2022-02-15 03:07:18,098 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:07:20,119 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:07:22,153 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:07:24,168 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:07:26,190 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:07:28,218 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:07:30,240 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:07:34,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:07:34,114 INFO L93 Difference]: Finished difference Result 707 states and 842 transitions. [2022-02-15 03:07:34,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-15 03:07:34,115 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 [2022-02-15 03:07:34,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:07:34,116 INFO L225 Difference]: With dead ends: 707 [2022-02-15 03:07:34,116 INFO L226 Difference]: Without dead ends: 421 [2022-02-15 03:07:34,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=282, Invalid=1974, Unknown=0, NotChecked=0, Total=2256 [2022-02-15 03:07:34,118 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 328 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 236 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 1384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.6s IncrementalHoareTripleChecker+Time [2022-02-15 03:07:34,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 468 Invalid, 1384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 1142 Invalid, 6 Unknown, 0 Unchecked, 16.6s Time] [2022-02-15 03:07:34,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2022-02-15 03:07:34,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 371. [2022-02-15 03:07:34,266 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) [2022-02-15 03:07:34,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 433 transitions. [2022-02-15 03:07:34,267 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 433 transitions. Word has length 118 [2022-02-15 03:07:34,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:07:34,267 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 433 transitions. [2022-02-15 03:07:34,267 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) [2022-02-15 03:07:34,267 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 433 transitions. [2022-02-15 03:07:34,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-02-15 03:07:34,268 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:07:34,268 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] [2022-02-15 03:07:34,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-02-15 03:07:34,268 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:07:34,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:07:34,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1990456093, now seen corresponding path program 17 times [2022-02-15 03:07:34,268 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:07:34,268 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1331565013] [2022-02-15 03:07:34,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:07:34,271 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 03:07:34,271 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 03:07:34,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:07:34,291 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:07:34,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:34,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:07:34,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:34,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:07:34,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:34,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:07:34,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:34,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:07:34,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:34,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:07:34,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:34,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:07:34,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:34,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-15 03:07:34,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:35,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-02-15 03:07:35,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:35,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-02-15 03:07:35,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:35,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 03:07:35,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:35,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-02-15 03:07:35,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:35,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 03:07:35,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:35,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:07:35,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:35,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:07:35,603 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:07:35,605 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1331565013] [2022-02-15 03:07:35,605 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1331565013] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:07:35,605 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:07:35,605 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-02-15 03:07:35,605 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780649969] [2022-02-15 03:07:35,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:07:35,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-15 03:07:35,605 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:07:35,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-15 03:07:35,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=676, Unknown=0, NotChecked=0, Total=756 [2022-02-15 03:07:35,606 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) [2022-02-15 03:07:37,697 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 [] [2022-02-15 03:07:42,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:07:42,395 INFO L93 Difference]: Finished difference Result 709 states and 844 transitions. [2022-02-15 03:07:42,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-15 03:07:42,396 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 [2022-02-15 03:07:42,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:07:42,397 INFO L225 Difference]: With dead ends: 709 [2022-02-15 03:07:42,397 INFO L226 Difference]: Without dead ends: 423 [2022-02-15 03:07:42,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=295, Invalid=2155, Unknown=0, NotChecked=0, Total=2450 [2022-02-15 03:07:42,399 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 200 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 1179 mSolverCounterSat, 156 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 1336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 1179 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-02-15 03:07:42,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 466 Invalid, 1336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 1179 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2022-02-15 03:07:42,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-02-15 03:07:42,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 373. [2022-02-15 03:07:42,571 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) [2022-02-15 03:07:42,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 435 transitions. [2022-02-15 03:07:42,573 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 435 transitions. Word has length 119 [2022-02-15 03:07:42,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:07:42,574 INFO L470 AbstractCegarLoop]: Abstraction has 373 states and 435 transitions. [2022-02-15 03:07:42,587 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) [2022-02-15 03:07:42,587 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 435 transitions. [2022-02-15 03:07:42,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-02-15 03:07:42,588 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:07:42,588 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] [2022-02-15 03:07:42,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-02-15 03:07:42,588 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:07:42,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:07:42,588 INFO L85 PathProgramCache]: Analyzing trace with hash 464836753, now seen corresponding path program 18 times [2022-02-15 03:07:42,589 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:07:42,589 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1520090339] [2022-02-15 03:07:42,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:07:42,601 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 03:07:42,601 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 03:07:42,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:07:42,625 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:07:43,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:43,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:07:43,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:43,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:07:43,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:43,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:07:43,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:43,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:07:43,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:43,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:07:43,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:43,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:07:43,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:43,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-15 03:07:43,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:43,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-15 03:07:43,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:43,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-02-15 03:07:43,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:43,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-02-15 03:07:43,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:43,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-02-15 03:07:43,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:43,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 03:07:43,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:44,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:07:44,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:44,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:07:44,007 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:07:44,007 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1520090339] [2022-02-15 03:07:44,007 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1520090339] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:07:44,007 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:07:44,007 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-02-15 03:07:44,007 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192550800] [2022-02-15 03:07:44,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:07:44,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-15 03:07:44,007 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:07:44,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-15 03:07:44,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=729, Unknown=0, NotChecked=0, Total=812 [2022-02-15 03:07:44,008 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) [2022-02-15 03:07:46,098 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 [] [2022-02-15 03:07:49,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:07:49,762 INFO L93 Difference]: Finished difference Result 711 states and 846 transitions. [2022-02-15 03:07:49,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-15 03:07:49,762 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 [2022-02-15 03:07:49,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:07:49,763 INFO L225 Difference]: With dead ends: 711 [2022-02-15 03:07:49,763 INFO L226 Difference]: Without dead ends: 425 [2022-02-15 03:07:49,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=308, Invalid=2344, Unknown=0, NotChecked=0, Total=2652 [2022-02-15 03:07:49,765 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 201 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 1117 mSolverCounterSat, 160 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 1278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 1117 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-02-15 03:07:49,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 405 Invalid, 1278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 1117 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2022-02-15 03:07:49,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2022-02-15 03:07:49,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 375. [2022-02-15 03:07:49,950 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) [2022-02-15 03:07:49,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 437 transitions. [2022-02-15 03:07:49,951 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 437 transitions. Word has length 120 [2022-02-15 03:07:49,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:07:49,951 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 437 transitions. [2022-02-15 03:07:49,951 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) [2022-02-15 03:07:49,951 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 437 transitions. [2022-02-15 03:07:49,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-02-15 03:07:49,952 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:07:49,952 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] [2022-02-15 03:07:49,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-02-15 03:07:49,952 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:07:49,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:07:49,952 INFO L85 PathProgramCache]: Analyzing trace with hash 415277469, now seen corresponding path program 19 times [2022-02-15 03:07:49,952 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:07:49,952 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1365863178] [2022-02-15 03:07:49,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:07:49,953 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 03:07:49,953 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 03:07:49,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:07:49,975 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:07:50,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:50,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:07:50,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:50,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:07:50,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:50,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:07:50,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:50,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:07:50,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:50,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:07:50,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:50,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:07:50,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:50,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-15 03:07:50,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:51,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-02-15 03:07:51,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:51,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-02-15 03:07:51,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:51,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-02-15 03:07:51,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:51,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-02-15 03:07:51,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:51,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 03:07:51,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:51,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:07:51,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:51,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:07:51,268 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:07:51,268 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1365863178] [2022-02-15 03:07:51,269 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1365863178] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:07:51,269 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:07:51,269 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-02-15 03:07:51,269 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195233738] [2022-02-15 03:07:51,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:07:51,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-15 03:07:51,269 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:07:51,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-15 03:07:51,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2022-02-15 03:07:51,270 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) [2022-02-15 03:07:53,332 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 [] [2022-02-15 03:07:59,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:07:59,347 INFO L93 Difference]: Finished difference Result 713 states and 848 transitions. [2022-02-15 03:07:59,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-15 03:07:59,347 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 [2022-02-15 03:07:59,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:07:59,349 INFO L225 Difference]: With dead ends: 713 [2022-02-15 03:07:59,349 INFO L226 Difference]: Without dead ends: 427 [2022-02-15 03:07:59,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=321, Invalid=2541, Unknown=0, NotChecked=0, Total=2862 [2022-02-15 03:07:59,350 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 201 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 1537 mSolverCounterSat, 164 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 1702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 1537 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-02-15 03:07:59,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 546 Invalid, 1702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 1537 Invalid, 1 Unknown, 0 Unchecked, 6.5s Time] [2022-02-15 03:07:59,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2022-02-15 03:07:59,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 377. [2022-02-15 03:07:59,530 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) [2022-02-15 03:07:59,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 439 transitions. [2022-02-15 03:07:59,531 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 439 transitions. Word has length 121 [2022-02-15 03:07:59,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:07:59,531 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 439 transitions. [2022-02-15 03:07:59,531 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) [2022-02-15 03:07:59,531 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 439 transitions. [2022-02-15 03:07:59,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-02-15 03:07:59,532 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:07:59,532 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] [2022-02-15 03:07:59,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-02-15 03:07:59,532 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:07:59,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:07:59,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1121060335, now seen corresponding path program 20 times [2022-02-15 03:07:59,533 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:07:59,533 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [786757318] [2022-02-15 03:07:59,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:07:59,534 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 03:07:59,534 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 03:07:59,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:07:59,560 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:08:00,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:00,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:08:00,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:00,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:08:00,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:00,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:08:00,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:00,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:08:00,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:00,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:08:00,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:00,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:08:00,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:00,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-15 03:08:00,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:00,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-02-15 03:08:00,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:01,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-02-15 03:08:01,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:01,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-02-15 03:08:01,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:01,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-02-15 03:08:01,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:01,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 03:08:01,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:01,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:08:01,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:01,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:08:01,136 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:08:01,136 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [786757318] [2022-02-15 03:08:01,137 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [786757318] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:08:01,137 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:08:01,137 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-02-15 03:08:01,137 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495871337] [2022-02-15 03:08:01,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:08:01,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-15 03:08:01,137 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:08:01,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-15 03:08:01,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=841, Unknown=0, NotChecked=0, Total=930 [2022-02-15 03:08:01,138 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) [2022-02-15 03:08:03,228 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 [] [2022-02-15 03:08:07,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:08:07,919 INFO L93 Difference]: Finished difference Result 715 states and 850 transitions. [2022-02-15 03:08:07,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-15 03:08:07,919 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 [2022-02-15 03:08:07,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:08:07,921 INFO L225 Difference]: With dead ends: 715 [2022-02-15 03:08:07,921 INFO L226 Difference]: Without dead ends: 429 [2022-02-15 03:08:07,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=334, Invalid=2746, Unknown=0, NotChecked=0, Total=3080 [2022-02-15 03:08:07,923 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 316 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 1359 mSolverCounterSat, 277 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 1637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 1359 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-02-15 03:08:07,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [319 Valid, 498 Invalid, 1637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 1359 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2022-02-15 03:08:07,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2022-02-15 03:08:08,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 379. [2022-02-15 03:08:08,131 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) [2022-02-15 03:08:08,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 441 transitions. [2022-02-15 03:08:08,132 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 441 transitions. Word has length 122 [2022-02-15 03:08:08,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:08:08,132 INFO L470 AbstractCegarLoop]: Abstraction has 379 states and 441 transitions. [2022-02-15 03:08:08,133 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) [2022-02-15 03:08:08,133 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 441 transitions. [2022-02-15 03:08:08,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-02-15 03:08:08,134 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:08:08,134 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] [2022-02-15 03:08:08,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-02-15 03:08:08,134 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:08:08,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:08:08,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1502892003, now seen corresponding path program 21 times [2022-02-15 03:08:08,134 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:08:08,134 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1920080709] [2022-02-15 03:08:08,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:08:08,137 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 03:08:08,137 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 03:08:08,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:08:08,168 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:08:08,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:08,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:08:08,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:08,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:08:08,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:08,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:08:08,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:08,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:08:08,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:08,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:08:09,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:09,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:08:09,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:09,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-15 03:08:09,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:09,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-15 03:08:09,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:09,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-02-15 03:08:09,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:09,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-02-15 03:08:09,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:09,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-02-15 03:08:09,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:09,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 03:08:09,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:09,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:08:09,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:09,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:08:09,937 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:08:09,937 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1920080709] [2022-02-15 03:08:09,937 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1920080709] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:08:09,937 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:08:09,937 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-02-15 03:08:09,937 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887479064] [2022-02-15 03:08:09,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:08:09,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-15 03:08:09,938 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:08:09,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-15 03:08:09,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=900, Unknown=0, NotChecked=0, Total=992 [2022-02-15 03:08:09,939 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) [2022-02-15 03:08:11,930 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:08:13,955 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:08:15,972 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:08:17,990 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:08:20,009 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:08:22,026 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:08:24,048 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:08:26,064 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:08:28,082 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:08:30,099 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:08:32,118 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:08:34,136 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:08:35,690 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:08:37,712 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:08:39,726 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:08:41,751 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:08:43,770 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:08:45,792 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:08:47,814 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:08:49,827 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:08:51,838 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:08:59,095 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:09:00,283 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:09:01,792 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:09:03,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:09:03,413 INFO L93 Difference]: Finished difference Result 717 states and 852 transitions. [2022-02-15 03:09:03,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-15 03:09:03,414 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 [2022-02-15 03:09:03,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:09:03,416 INFO L225 Difference]: With dead ends: 717 [2022-02-15 03:09:03,416 INFO L226 Difference]: Without dead ends: 431 [2022-02-15 03:09:03,417 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=347, Invalid=2959, Unknown=0, NotChecked=0, Total=3306 [2022-02-15 03:09:03,418 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 254 mSDsluCounter, 988 mSDsCounter, 0 mSdLazyCounter, 3135 mSolverCounterSat, 228 mSolverCounterUnsat, 19 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 3382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 3135 IncrementalHoareTripleChecker+Invalid, 19 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.6s IncrementalHoareTripleChecker+Time [2022-02-15 03:09:03,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 1127 Invalid, 3382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 3135 Invalid, 19 Unknown, 0 Unchecked, 51.6s Time] [2022-02-15 03:09:03,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2022-02-15 03:09:03,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 381. [2022-02-15 03:09:03,606 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) [2022-02-15 03:09:03,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 443 transitions. [2022-02-15 03:09:03,606 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 443 transitions. Word has length 123 [2022-02-15 03:09:03,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:09:03,607 INFO L470 AbstractCegarLoop]: Abstraction has 381 states and 443 transitions. [2022-02-15 03:09:03,607 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) [2022-02-15 03:09:03,607 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 443 transitions. [2022-02-15 03:09:03,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-02-15 03:09:03,607 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:09:03,608 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] [2022-02-15 03:09:03,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-02-15 03:09:03,608 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:09:03,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:09:03,608 INFO L85 PathProgramCache]: Analyzing trace with hash -454771823, now seen corresponding path program 22 times [2022-02-15 03:09:03,608 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:09:03,608 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [316950546] [2022-02-15 03:09:03,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:09:03,609 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 03:09:03,609 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 03:09:03,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:09:03,637 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:09:04,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:04,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:09:04,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:04,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:09:04,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:04,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:09:04,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:04,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:09:04,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:04,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:09:04,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:04,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:09:04,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:04,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-15 03:09:04,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:05,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-02-15 03:09:05,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:05,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 03:09:05,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:05,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-02-15 03:09:05,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:05,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-02-15 03:09:05,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:05,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 03:09:05,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:05,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:09:05,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:05,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:09:05,262 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:09:05,262 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [316950546] [2022-02-15 03:09:05,262 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [316950546] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:09:05,262 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:09:05,262 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-02-15 03:09:05,262 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605067155] [2022-02-15 03:09:05,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:09:05,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 03:09:05,262 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:09:05,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 03:09:05,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=961, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 03:09:05,263 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) [2022-02-15 03:09:07,361 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:09:14,070 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:09:15,665 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:09:17,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:09:17,294 INFO L93 Difference]: Finished difference Result 719 states and 854 transitions. [2022-02-15 03:09:17,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-15 03:09:17,294 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 [2022-02-15 03:09:17,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:09:17,296 INFO L225 Difference]: With dead ends: 719 [2022-02-15 03:09:17,296 INFO L226 Difference]: Without dead ends: 433 [2022-02-15 03:09:17,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=360, Invalid=3180, Unknown=0, NotChecked=0, Total=3540 [2022-02-15 03:09:17,299 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 143 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 2332 mSolverCounterSat, 116 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 2449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2332 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-02-15 03:09:17,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 766 Invalid, 2449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 2332 Invalid, 1 Unknown, 0 Unchecked, 9.8s Time] [2022-02-15 03:09:17,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2022-02-15 03:09:17,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 383. [2022-02-15 03:09:17,484 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) [2022-02-15 03:09:17,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 445 transitions. [2022-02-15 03:09:17,485 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 445 transitions. Word has length 124 [2022-02-15 03:09:17,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:09:17,485 INFO L470 AbstractCegarLoop]: Abstraction has 383 states and 445 transitions. [2022-02-15 03:09:17,485 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) [2022-02-15 03:09:17,485 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 445 transitions. [2022-02-15 03:09:17,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-02-15 03:09:17,486 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:09:17,486 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] [2022-02-15 03:09:17,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-02-15 03:09:17,486 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:09:17,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:09:17,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1972182685, now seen corresponding path program 23 times [2022-02-15 03:09:17,487 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:09:17,487 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1731514642] [2022-02-15 03:09:17,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:09:17,488 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 03:09:17,488 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 03:09:17,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:09:17,516 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:09:17,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:17,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:09:17,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:17,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:09:17,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:17,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:09:17,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:17,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:09:17,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:17,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:09:17,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:18,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:09:18,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:18,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-15 03:09:18,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:18,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-02-15 03:09:18,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:18,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-02-15 03:09:18,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:18,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-02-15 03:09:18,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:18,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 03:09:18,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:18,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 03:09:18,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:18,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:09:18,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:18,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:09:18,896 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:09:18,896 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1731514642] [2022-02-15 03:09:18,896 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1731514642] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:09:18,896 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:09:18,896 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-02-15 03:09:18,896 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294584602] [2022-02-15 03:09:18,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:09:18,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 03:09:18,896 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:09:18,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 03:09:18,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1024, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 03:09:18,897 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) [2022-02-15 03:09:21,005 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 [] [2022-02-15 03:09:26,690 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:09:28,649 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:09:31,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:09:31,642 INFO L93 Difference]: Finished difference Result 721 states and 856 transitions. [2022-02-15 03:09:31,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-15 03:09:31,642 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 [2022-02-15 03:09:31,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:09:31,644 INFO L225 Difference]: With dead ends: 721 [2022-02-15 03:09:31,644 INFO L226 Difference]: Without dead ends: 435 [2022-02-15 03:09:31,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=373, Invalid=3409, Unknown=0, NotChecked=0, Total=3782 [2022-02-15 03:09:31,645 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 328 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 2828 mSolverCounterSat, 262 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 3091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 2828 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2022-02-15 03:09:31,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 985 Invalid, 3091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 2828 Invalid, 1 Unknown, 0 Unchecked, 10.7s Time] [2022-02-15 03:09:31,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2022-02-15 03:09:31,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 385. [2022-02-15 03:09:31,831 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) [2022-02-15 03:09:31,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 447 transitions. [2022-02-15 03:09:31,831 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 447 transitions. Word has length 125 [2022-02-15 03:09:31,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:09:31,832 INFO L470 AbstractCegarLoop]: Abstraction has 385 states and 447 transitions. [2022-02-15 03:09:31,832 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) [2022-02-15 03:09:31,832 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 447 transitions. [2022-02-15 03:09:31,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-02-15 03:09:31,832 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:09:31,832 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] [2022-02-15 03:09:31,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-02-15 03:09:31,834 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:09:31,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:09:31,835 INFO L85 PathProgramCache]: Analyzing trace with hash -101638895, now seen corresponding path program 24 times [2022-02-15 03:09:31,835 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:09:31,835 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2134665041] [2022-02-15 03:09:31,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:09:31,837 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 03:09:31,837 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 03:09:31,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:09:31,896 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:09:32,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:32,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:09:32,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:32,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:09:32,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:32,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:09:32,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:32,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:09:32,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:32,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:09:32,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:32,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:09:32,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:32,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-15 03:09:32,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:33,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 03:09:33,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:33,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-02-15 03:09:33,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:33,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-02-15 03:09:33,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:33,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-02-15 03:09:33,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:33,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 03:09:33,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:33,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:09:33,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:33,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:09:33,731 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:09:33,731 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2134665041] [2022-02-15 03:09:33,731 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2134665041] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:09:33,731 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:09:33,731 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-02-15 03:09:33,731 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313537592] [2022-02-15 03:09:33,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:09:33,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-15 03:09:33,731 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:09:33,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-15 03:09:33,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1089, Unknown=0, NotChecked=0, Total=1190 [2022-02-15 03:09:33,732 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) [2022-02-15 03:09:35,793 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:09:40,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:09:40,858 INFO L93 Difference]: Finished difference Result 723 states and 858 transitions. [2022-02-15 03:09:40,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-15 03:09:40,859 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 [2022-02-15 03:09:40,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:09:40,860 INFO L225 Difference]: With dead ends: 723 [2022-02-15 03:09:40,860 INFO L226 Difference]: Without dead ends: 437 [2022-02-15 03:09:40,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=386, Invalid=3646, Unknown=0, NotChecked=0, Total=4032 [2022-02-15 03:09:40,867 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 200 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 1627 mSolverCounterSat, 179 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 1807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 1627 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-02-15 03:09:40,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 513 Invalid, 1807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 1627 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2022-02-15 03:09:40,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-02-15 03:09:41,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 387. [2022-02-15 03:09:41,046 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) [2022-02-15 03:09:41,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 449 transitions. [2022-02-15 03:09:41,047 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 449 transitions. Word has length 126 [2022-02-15 03:09:41,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:09:41,047 INFO L470 AbstractCegarLoop]: Abstraction has 387 states and 449 transitions. [2022-02-15 03:09:41,047 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) [2022-02-15 03:09:41,047 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 449 transitions. [2022-02-15 03:09:41,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-02-15 03:09:41,048 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:09:41,048 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] [2022-02-15 03:09:41,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-02-15 03:09:41,048 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:09:41,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:09:41,048 INFO L85 PathProgramCache]: Analyzing trace with hash 34401565, now seen corresponding path program 25 times [2022-02-15 03:09:41,048 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:09:41,049 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [590022362] [2022-02-15 03:09:41,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:09:41,049 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 03:09:41,050 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 03:09:41,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:09:41,079 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:09:41,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:41,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:09:41,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:41,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:09:41,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:41,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:09:41,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:41,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:09:41,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:41,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:09:41,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:41,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:09:41,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:41,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-15 03:09:41,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:42,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-02-15 03:09:42,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:42,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-02-15 03:09:42,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:42,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 03:09:42,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:42,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-02-15 03:09:42,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:42,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 03:09:42,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:42,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:09:42,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:42,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:09:42,647 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:09:42,647 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [590022362] [2022-02-15 03:09:42,647 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [590022362] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:09:42,647 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:09:42,647 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-02-15 03:09:42,647 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566922751] [2022-02-15 03:09:42,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:09:42,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-15 03:09:42,647 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:09:42,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-15 03:09:42,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1156, Unknown=0, NotChecked=0, Total=1260 [2022-02-15 03:09:42,648 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) [2022-02-15 03:09:44,746 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 [] [2022-02-15 03:09:51,469 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:09:53,537 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:09:54,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:09:54,464 INFO L93 Difference]: Finished difference Result 725 states and 860 transitions. [2022-02-15 03:09:54,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-15 03:09:54,464 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 [2022-02-15 03:09:54,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:09:54,467 INFO L225 Difference]: With dead ends: 725 [2022-02-15 03:09:54,467 INFO L226 Difference]: Without dead ends: 439 [2022-02-15 03:09:54,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=399, Invalid=3891, Unknown=0, NotChecked=0, Total=4290 [2022-02-15 03:09:54,469 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 258 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 2367 mSolverCounterSat, 242 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 2610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 2367 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-02-15 03:09:54,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 780 Invalid, 2610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 2367 Invalid, 1 Unknown, 0 Unchecked, 9.6s Time] [2022-02-15 03:09:54,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2022-02-15 03:09:54,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 389. [2022-02-15 03:09:54,658 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) [2022-02-15 03:09:54,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 451 transitions. [2022-02-15 03:09:54,684 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 451 transitions. Word has length 127 [2022-02-15 03:09:54,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:09:54,684 INFO L470 AbstractCegarLoop]: Abstraction has 389 states and 451 transitions. [2022-02-15 03:09:54,684 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) [2022-02-15 03:09:54,685 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 451 transitions. [2022-02-15 03:09:54,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-02-15 03:09:54,686 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:09:54,686 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] [2022-02-15 03:09:54,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-02-15 03:09:54,686 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:09:54,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:09:54,686 INFO L85 PathProgramCache]: Analyzing trace with hash -43311471, now seen corresponding path program 26 times [2022-02-15 03:09:54,686 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:09:54,686 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1552583604] [2022-02-15 03:09:54,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:09:54,690 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 03:09:54,690 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 03:09:54,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:09:54,720 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:09:55,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:55,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:09:55,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:55,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:09:55,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:55,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:09:55,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:55,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:09:55,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:55,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:09:55,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:55,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:09:55,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:55,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-15 03:09:55,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:56,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-15 03:09:56,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:56,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-02-15 03:09:56,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:56,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-02-15 03:09:56,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:56,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-02-15 03:09:56,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:56,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 03:09:56,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:56,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:09:56,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:56,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:09:56,395 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:09:56,395 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1552583604] [2022-02-15 03:09:56,395 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1552583604] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:09:56,395 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:09:56,395 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-02-15 03:09:56,395 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541029371] [2022-02-15 03:09:56,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:09:56,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-15 03:09:56,396 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:09:56,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-15 03:09:56,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1225, Unknown=0, NotChecked=0, Total=1332 [2022-02-15 03:09:56,397 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) [2022-02-15 03:09:58,469 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:10:05,346 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:10:07,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:10:07,352 INFO L93 Difference]: Finished difference Result 727 states and 862 transitions. [2022-02-15 03:10:07,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-15 03:10:07,353 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 [2022-02-15 03:10:07,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:10:07,354 INFO L225 Difference]: With dead ends: 727 [2022-02-15 03:10:07,354 INFO L226 Difference]: Without dead ends: 441 [2022-02-15 03:10:07,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 556 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=412, Invalid=4144, Unknown=0, NotChecked=0, Total=4556 [2022-02-15 03:10:07,356 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 212 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 2766 mSolverCounterSat, 151 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 859 SdHoareTripleChecker+Invalid, 2918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 2766 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-02-15 03:10:07,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 859 Invalid, 2918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 2766 Invalid, 1 Unknown, 0 Unchecked, 8.7s Time] [2022-02-15 03:10:07,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-02-15 03:10:07,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 391. [2022-02-15 03:10:07,543 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) [2022-02-15 03:10:07,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 453 transitions. [2022-02-15 03:10:07,543 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 453 transitions. Word has length 128 [2022-02-15 03:10:07,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:10:07,543 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 453 transitions. [2022-02-15 03:10:07,543 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) [2022-02-15 03:10:07,544 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 453 transitions. [2022-02-15 03:10:07,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-02-15 03:10:07,544 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:10:07,544 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] [2022-02-15 03:10:07,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-02-15 03:10:07,544 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:10:07,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:10:07,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1842551709, now seen corresponding path program 27 times [2022-02-15 03:10:07,545 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:10:07,545 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [663421544] [2022-02-15 03:10:07,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:10:07,548 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 03:10:07,548 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 03:10:07,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:10:07,578 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:10:08,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:08,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:10:08,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:08,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:10:08,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:08,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:10:08,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:08,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:10:08,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:08,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:10:08,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:08,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:10:08,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:08,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-15 03:10:08,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:09,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-02-15 03:10:09,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:09,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-02-15 03:10:09,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:09,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-02-15 03:10:09,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:09,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-02-15 03:10:09,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:09,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 03:10:09,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:09,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:10:09,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:09,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:10:09,953 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:10:09,954 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [663421544] [2022-02-15 03:10:09,954 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [663421544] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:10:09,954 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:10:09,954 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2022-02-15 03:10:09,954 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713417482] [2022-02-15 03:10:09,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:10:09,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-15 03:10:09,954 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:10:09,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-15 03:10:09,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1296, Unknown=0, NotChecked=0, Total=1406 [2022-02-15 03:10:09,955 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) [2022-02-15 03:10:12,055 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:10:16,562 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:10:19,194 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:10:21,358 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:10:23,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:10:23,127 INFO L93 Difference]: Finished difference Result 729 states and 864 transitions. [2022-02-15 03:10:23,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-15 03:10:23,128 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 [2022-02-15 03:10:23,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:10:23,129 INFO L225 Difference]: With dead ends: 729 [2022-02-15 03:10:23,129 INFO L226 Difference]: Without dead ends: 443 [2022-02-15 03:10:23,130 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 590 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=425, Invalid=4405, Unknown=0, NotChecked=0, Total=4830 [2022-02-15 03:10:23,130 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 271 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 2635 mSolverCounterSat, 214 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 2851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 2635 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2022-02-15 03:10:23,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 798 Invalid, 2851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 2635 Invalid, 2 Unknown, 0 Unchecked, 11.0s Time] [2022-02-15 03:10:23,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2022-02-15 03:10:23,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 393. [2022-02-15 03:10:23,322 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) [2022-02-15 03:10:23,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 455 transitions. [2022-02-15 03:10:23,323 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 455 transitions. Word has length 129 [2022-02-15 03:10:23,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:10:23,324 INFO L470 AbstractCegarLoop]: Abstraction has 393 states and 455 transitions. [2022-02-15 03:10:23,324 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) [2022-02-15 03:10:23,324 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 455 transitions. [2022-02-15 03:10:23,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-02-15 03:10:23,324 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:10:23,325 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] [2022-02-15 03:10:23,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-02-15 03:10:23,325 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:10:23,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:10:23,325 INFO L85 PathProgramCache]: Analyzing trace with hash 174768145, now seen corresponding path program 28 times [2022-02-15 03:10:23,325 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:10:23,325 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [520973286] [2022-02-15 03:10:23,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:10:23,326 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 03:10:23,326 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 03:10:23,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:10:23,356 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:10:23,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:23,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:10:23,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:23,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:10:23,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:23,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:10:23,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:23,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:10:23,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:23,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:10:23,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:23,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:10:23,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:23,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-15 03:10:23,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:24,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-02-15 03:10:24,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:24,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-02-15 03:10:24,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:24,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-02-15 03:10:24,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:24,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-02-15 03:10:24,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:24,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 03:10:24,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:25,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:10:25,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:25,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:10:25,014 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:10:25,015 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [520973286] [2022-02-15 03:10:25,015 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [520973286] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:10:25,015 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:10:25,015 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2022-02-15 03:10:25,015 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087557768] [2022-02-15 03:10:25,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:10:25,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-15 03:10:25,015 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:10:25,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-15 03:10:25,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1369, Unknown=0, NotChecked=0, Total=1482 [2022-02-15 03:10:25,016 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) [2022-02-15 03:10:26,577 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:10:28,596 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:10:30,613 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:10:32,629 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:10:34,642 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:10:36,659 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:10:38,674 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:10:40,693 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:10:42,708 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:10:44,724 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:10:46,746 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:10:48,773 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:10:50,793 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:10:52,832 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:10:54,858 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:10:56,874 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:10:58,888 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:11:00,909 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:11:02,095 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:11:04,107 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:11:06,126 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:11:07,443 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:11:09,460 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:11:11,475 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:11:13,493 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:11:15,516 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:11:17,092 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:11:19,111 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:11:21,130 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:11:28,304 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:11:34,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:11:34,947 INFO L93 Difference]: Finished difference Result 731 states and 866 transitions. [2022-02-15 03:11:34,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-15 03:11:34,947 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 [2022-02-15 03:11:34,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:11:34,951 INFO L225 Difference]: With dead ends: 731 [2022-02-15 03:11:34,951 INFO L226 Difference]: Without dead ends: 445 [2022-02-15 03:11:34,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=438, Invalid=4674, Unknown=0, NotChecked=0, Total=5112 [2022-02-15 03:11:34,967 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 370 mSDsluCounter, 1317 mSDsCounter, 0 mSdLazyCounter, 4387 mSolverCounterSat, 384 mSolverCounterUnsat, 25 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 1456 SdHoareTripleChecker+Invalid, 4796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 384 IncrementalHoareTripleChecker+Valid, 4387 IncrementalHoareTripleChecker+Invalid, 25 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 67.4s IncrementalHoareTripleChecker+Time [2022-02-15 03:11:34,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [373 Valid, 1456 Invalid, 4796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [384 Valid, 4387 Invalid, 25 Unknown, 0 Unchecked, 67.4s Time] [2022-02-15 03:11:34,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2022-02-15 03:11:35,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 395. [2022-02-15 03:11:35,181 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) [2022-02-15 03:11:35,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 457 transitions. [2022-02-15 03:11:35,181 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 457 transitions. Word has length 130 [2022-02-15 03:11:35,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:11:35,182 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 457 transitions. [2022-02-15 03:11:35,182 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) [2022-02-15 03:11:35,182 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 457 transitions. [2022-02-15 03:11:35,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-02-15 03:11:35,183 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:11:35,183 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] [2022-02-15 03:11:35,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-02-15 03:11:35,183 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:11:35,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:11:35,183 INFO L85 PathProgramCache]: Analyzing trace with hash 13085213, now seen corresponding path program 29 times [2022-02-15 03:11:35,183 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:11:35,183 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1507750067] [2022-02-15 03:11:35,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:11:35,192 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 03:11:35,192 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 03:11:35,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:11:35,226 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:11:35,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:35,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:11:35,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:35,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:11:35,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:35,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:11:35,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:35,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:11:35,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:35,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:11:35,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:35,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:11:35,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:35,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-15 03:11:35,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:36,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-02-15 03:11:36,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:36,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-02-15 03:11:36,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:36,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-02-15 03:11:36,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:36,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-02-15 03:11:36,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:36,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 03:11:36,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:36,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:11:36,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:36,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:11:36,881 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:11:36,881 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1507750067] [2022-02-15 03:11:36,882 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1507750067] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:11:36,882 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:11:36,882 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2022-02-15 03:11:36,882 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282466010] [2022-02-15 03:11:36,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:11:36,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-15 03:11:36,882 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:11:36,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-15 03:11:36,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1444, Unknown=0, NotChecked=0, Total=1560 [2022-02-15 03:11:36,883 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) [2022-02-15 03:11:38,984 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:11:45,591 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:11:46,919 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:11:50,398 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:11:53,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:11:53,451 INFO L93 Difference]: Finished difference Result 733 states and 868 transitions. [2022-02-15 03:11:53,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-15 03:11:53,451 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 [2022-02-15 03:11:53,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:11:53,453 INFO L225 Difference]: With dead ends: 733 [2022-02-15 03:11:53,453 INFO L226 Difference]: Without dead ends: 447 [2022-02-15 03:11:53,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 661 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=451, Invalid=4951, Unknown=0, NotChecked=0, Total=5402 [2022-02-15 03:11:53,463 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 201 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 3257 mSolverCounterSat, 195 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 1001 SdHoareTripleChecker+Invalid, 3453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 3257 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2022-02-15 03:11:53,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 1001 Invalid, 3453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 3257 Invalid, 1 Unknown, 0 Unchecked, 13.9s Time] [2022-02-15 03:11:53,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2022-02-15 03:11:53,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 397. [2022-02-15 03:11:53,695 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) [2022-02-15 03:11:53,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 459 transitions. [2022-02-15 03:11:53,698 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 459 transitions. Word has length 131 [2022-02-15 03:11:53,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:11:53,698 INFO L470 AbstractCegarLoop]: Abstraction has 397 states and 459 transitions. [2022-02-15 03:11:53,698 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) [2022-02-15 03:11:53,698 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 459 transitions. [2022-02-15 03:11:53,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-02-15 03:11:53,708 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:11:53,708 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] [2022-02-15 03:11:53,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-02-15 03:11:53,708 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:11:53,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:11:53,709 INFO L85 PathProgramCache]: Analyzing trace with hash -704118383, now seen corresponding path program 30 times [2022-02-15 03:11:53,709 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:11:53,709 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869255311] [2022-02-15 03:11:53,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:11:53,710 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 03:11:53,710 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 03:11:53,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:11:53,753 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:11:54,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:54,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:11:54,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:54,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:11:54,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:54,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:11:54,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:54,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:11:54,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:54,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:11:54,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:54,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:11:54,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:54,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-15 03:11:54,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:55,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-02-15 03:11:55,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:55,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 03:11:55,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:55,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-02-15 03:11:55,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:55,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-02-15 03:11:55,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:55,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 03:11:55,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:55,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:11:55,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:55,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:11:55,739 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:11:55,739 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869255311] [2022-02-15 03:11:55,739 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1869255311] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:11:55,740 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:11:55,740 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2022-02-15 03:11:55,740 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335090682] [2022-02-15 03:11:55,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:11:55,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-15 03:11:55,741 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:11:55,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-15 03:11:55,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1521, Unknown=0, NotChecked=0, Total=1640 [2022-02-15 03:11:55,741 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) [2022-02-15 03:11:57,841 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 [] [2022-02-15 03:12:06,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:12:06,994 INFO L93 Difference]: Finished difference Result 735 states and 870 transitions. [2022-02-15 03:12:06,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-15 03:12:06,994 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 [2022-02-15 03:12:06,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:12:06,997 INFO L225 Difference]: With dead ends: 735 [2022-02-15 03:12:06,997 INFO L226 Difference]: Without dead ends: 449 [2022-02-15 03:12:06,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 698 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=464, Invalid=5236, Unknown=0, NotChecked=0, Total=5700 [2022-02-15 03:12:06,998 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 271 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 2381 mSolverCounterSat, 224 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 2606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 2381 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-02-15 03:12:06,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 642 Invalid, 2606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 2381 Invalid, 1 Unknown, 0 Unchecked, 8.6s Time] [2022-02-15 03:12:07,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2022-02-15 03:12:07,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 399. [2022-02-15 03:12:07,238 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) [2022-02-15 03:12:07,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 461 transitions. [2022-02-15 03:12:07,239 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 461 transitions. Word has length 132 [2022-02-15 03:12:07,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:12:07,239 INFO L470 AbstractCegarLoop]: Abstraction has 399 states and 461 transitions. [2022-02-15 03:12:07,240 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) [2022-02-15 03:12:07,240 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 461 transitions. [2022-02-15 03:12:07,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-02-15 03:12:07,240 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:12:07,240 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] [2022-02-15 03:12:07,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-02-15 03:12:07,241 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:12:07,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:12:07,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1462593379, now seen corresponding path program 31 times [2022-02-15 03:12:07,241 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:12:07,241 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1462047348] [2022-02-15 03:12:07,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:12:07,260 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 03:12:07,260 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 03:12:07,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:12:07,311 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:12:07,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:07,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:12:07,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:07,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:12:07,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:07,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:12:07,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:07,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:12:07,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:07,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:12:07,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:07,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:12:07,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:07,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-15 03:12:07,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:09,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-02-15 03:12:09,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:09,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-02-15 03:12:09,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:09,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-02-15 03:12:09,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:09,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 03:12:09,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:09,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 03:12:09,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:09,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:12:09,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:09,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:12:09,220 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:12:09,220 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1462047348] [2022-02-15 03:12:09,220 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1462047348] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:12:09,220 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:12:09,220 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2022-02-15 03:12:09,220 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245397248] [2022-02-15 03:12:09,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:12:09,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-02-15 03:12:09,222 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:12:09,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-02-15 03:12:09,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1600, Unknown=0, NotChecked=0, Total=1722 [2022-02-15 03:12:09,223 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) [2022-02-15 03:12:11,321 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:12:17,884 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 [] [2022-02-15 03:12:18,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:12:18,838 INFO L93 Difference]: Finished difference Result 737 states and 872 transitions. [2022-02-15 03:12:18,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-15 03:12:18,838 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 [2022-02-15 03:12:18,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:12:18,840 INFO L225 Difference]: With dead ends: 737 [2022-02-15 03:12:18,840 INFO L226 Difference]: Without dead ends: 451 [2022-02-15 03:12:18,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 736 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=477, Invalid=5529, Unknown=0, NotChecked=0, Total=6006 [2022-02-15 03:12:18,841 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 196 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 1953 mSolverCounterSat, 199 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 2153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 1953 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-02-15 03:12:18,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 469 Invalid, 2153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 1953 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2022-02-15 03:12:18,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2022-02-15 03:12:19,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 401. [2022-02-15 03:12:19,072 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) [2022-02-15 03:12:19,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 463 transitions. [2022-02-15 03:12:19,073 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 463 transitions. Word has length 133 [2022-02-15 03:12:19,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:12:19,073 INFO L470 AbstractCegarLoop]: Abstraction has 401 states and 463 transitions. [2022-02-15 03:12:19,073 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) [2022-02-15 03:12:19,073 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 463 transitions. [2022-02-15 03:12:19,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-02-15 03:12:19,074 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:12:19,074 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] [2022-02-15 03:12:19,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-02-15 03:12:19,074 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:12:19,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:12:19,075 INFO L85 PathProgramCache]: Analyzing trace with hash 794485521, now seen corresponding path program 32 times [2022-02-15 03:12:19,075 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:12:19,075 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1413236420] [2022-02-15 03:12:19,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:12:19,076 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 03:12:19,076 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 03:12:19,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:12:19,131 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:12:19,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:19,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:12:19,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:19,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:12:19,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:19,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:12:19,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:19,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:12:19,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:19,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:12:19,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:19,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:12:19,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:19,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-15 03:12:19,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:20,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 03:12:20,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:21,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-02-15 03:12:21,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:21,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-02-15 03:12:21,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:21,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-02-15 03:12:21,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:21,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 03:12:21,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:21,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:12:21,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:21,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:12:21,130 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:12:21,130 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1413236420] [2022-02-15 03:12:21,130 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1413236420] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:12:21,130 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:12:21,130 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2022-02-15 03:12:21,130 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284442731] [2022-02-15 03:12:21,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:12:21,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-02-15 03:12:21,131 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:12:21,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-02-15 03:12:21,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1681, Unknown=0, NotChecked=0, Total=1806 [2022-02-15 03:12:21,132 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) [2022-02-15 03:12:23,236 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 [] [2022-02-15 03:12:31,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:12:31,586 INFO L93 Difference]: Finished difference Result 739 states and 874 transitions. [2022-02-15 03:12:31,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-15 03:12:31,586 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 [2022-02-15 03:12:31,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:12:31,588 INFO L225 Difference]: With dead ends: 739 [2022-02-15 03:12:31,588 INFO L226 Difference]: Without dead ends: 453 [2022-02-15 03:12:31,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 775 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=490, Invalid=5830, Unknown=0, NotChecked=0, Total=6320 [2022-02-15 03:12:31,589 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 254 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 2649 mSolverCounterSat, 269 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 2919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 2649 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-02-15 03:12:31,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 704 Invalid, 2919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 2649 Invalid, 1 Unknown, 0 Unchecked, 7.5s Time] [2022-02-15 03:12:31,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2022-02-15 03:12:31,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 403. [2022-02-15 03:12:31,807 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) [2022-02-15 03:12:31,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 465 transitions. [2022-02-15 03:12:31,808 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 465 transitions. Word has length 134 [2022-02-15 03:12:31,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:12:31,808 INFO L470 AbstractCegarLoop]: Abstraction has 403 states and 465 transitions. [2022-02-15 03:12:31,808 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) [2022-02-15 03:12:31,808 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 465 transitions. [2022-02-15 03:12:31,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-02-15 03:12:31,809 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:12:31,809 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] [2022-02-15 03:12:31,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-02-15 03:12:31,809 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:12:31,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:12:31,810 INFO L85 PathProgramCache]: Analyzing trace with hash 2044454685, now seen corresponding path program 33 times [2022-02-15 03:12:31,810 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:12:31,810 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [311020835] [2022-02-15 03:12:31,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:12:31,811 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 03:12:31,811 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 03:12:31,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:12:31,865 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:12:32,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:32,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:12:32,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:32,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:12:32,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:32,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:12:32,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:32,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:12:32,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:32,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:12:32,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:32,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:12:32,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:32,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-15 03:12:32,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:34,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-02-15 03:12:34,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:34,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-02-15 03:12:34,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:34,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 03:12:34,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:34,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-02-15 03:12:34,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:34,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 03:12:34,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:34,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:12:34,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:34,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:12:34,254 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:12:34,254 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [311020835] [2022-02-15 03:12:34,254 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [311020835] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:12:34,254 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:12:34,254 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2022-02-15 03:12:34,254 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867116939] [2022-02-15 03:12:34,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:12:34,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-02-15 03:12:34,255 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:12:34,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-02-15 03:12:34,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1764, Unknown=0, NotChecked=0, Total=1892 [2022-02-15 03:12:34,256 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) [2022-02-15 03:12:36,357 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:12:43,307 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:12:45,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:12:45,275 INFO L93 Difference]: Finished difference Result 741 states and 876 transitions. [2022-02-15 03:12:45,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-02-15 03:12:45,276 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 [2022-02-15 03:12:45,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:12:45,278 INFO L225 Difference]: With dead ends: 741 [2022-02-15 03:12:45,278 INFO L226 Difference]: Without dead ends: 455 [2022-02-15 03:12:45,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 815 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=503, Invalid=6139, Unknown=0, NotChecked=0, Total=6642 [2022-02-15 03:12:45,280 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 142 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 2395 mSolverCounterSat, 138 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 2535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 2395 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-02-15 03:12:45,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 560 Invalid, 2535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 2395 Invalid, 2 Unknown, 0 Unchecked, 7.8s Time] [2022-02-15 03:12:45,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2022-02-15 03:12:45,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 405. [2022-02-15 03:12:45,533 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) [2022-02-15 03:12:45,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 467 transitions. [2022-02-15 03:12:45,534 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 467 transitions. Word has length 135 [2022-02-15 03:12:45,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:12:45,535 INFO L470 AbstractCegarLoop]: Abstraction has 405 states and 467 transitions. [2022-02-15 03:12:45,535 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) [2022-02-15 03:12:45,535 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 467 transitions. [2022-02-15 03:12:45,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-02-15 03:12:45,536 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:12:45,536 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] [2022-02-15 03:12:45,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-02-15 03:12:45,536 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:12:45,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:12:45,537 INFO L85 PathProgramCache]: Analyzing trace with hash 2138793105, now seen corresponding path program 34 times [2022-02-15 03:12:45,537 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:12:45,537 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1656813650] [2022-02-15 03:12:45,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:12:45,539 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 03:12:45,539 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 03:12:45,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:12:45,643 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:12:45,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:46,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:12:46,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:46,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:12:46,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:46,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:12:46,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:46,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:12:46,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:46,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:12:46,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:46,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:12:46,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:46,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-15 03:12:46,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:47,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-02-15 03:12:47,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:47,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-02-15 03:12:47,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:47,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-02-15 03:12:47,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:47,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-02-15 03:12:47,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:48,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 03:12:48,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:48,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:12:48,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:48,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:12:48,014 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:12:48,014 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1656813650] [2022-02-15 03:12:48,014 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1656813650] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:12:48,015 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:12:48,015 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2022-02-15 03:12:48,015 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286771069] [2022-02-15 03:12:48,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:12:48,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-02-15 03:12:48,020 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:12:48,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-02-15 03:12:48,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1849, Unknown=0, NotChecked=0, Total=1980 [2022-02-15 03:12:48,021 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) [2022-02-15 03:12:50,142 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 [] [2022-02-15 03:12:59,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:12:59,788 INFO L93 Difference]: Finished difference Result 743 states and 878 transitions. [2022-02-15 03:12:59,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-02-15 03:12:59,788 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 136 [2022-02-15 03:12:59,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:12:59,790 INFO L225 Difference]: With dead ends: 743 [2022-02-15 03:12:59,790 INFO L226 Difference]: Without dead ends: 457 [2022-02-15 03:12:59,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 856 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=516, Invalid=6456, Unknown=0, NotChecked=0, Total=6972 [2022-02-15 03:12:59,791 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 200 mSDsluCounter, 985 mSDsCounter, 0 mSdLazyCounter, 3893 mSolverCounterSat, 209 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 4103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 3893 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-02-15 03:12:59,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 1124 Invalid, 4103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 3893 Invalid, 1 Unknown, 0 Unchecked, 8.8s Time] [2022-02-15 03:12:59,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2022-02-15 03:13:00,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 407. [2022-02-15 03:13:00,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 332 states have (on average 1.1837349397590362) internal successors, (393), 336 states have internal predecessors, (393), 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) [2022-02-15 03:13:00,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 469 transitions. [2022-02-15 03:13:00,025 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 469 transitions. Word has length 136 [2022-02-15 03:13:00,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:13:00,026 INFO L470 AbstractCegarLoop]: Abstraction has 407 states and 469 transitions. [2022-02-15 03:13:00,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2022-02-15 03:13:00,026 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 469 transitions. [2022-02-15 03:13:00,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-02-15 03:13:00,026 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:13:00,027 INFO L514 BasicCegarLoop]: trace histogram [35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:13:00,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-02-15 03:13:00,027 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:13:00,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:13:00,027 INFO L85 PathProgramCache]: Analyzing trace with hash 768316829, now seen corresponding path program 35 times [2022-02-15 03:13:00,027 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:13:00,027 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [774768183] [2022-02-15 03:13:00,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:13:00,028 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 03:13:00,028 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 03:13:00,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:13:00,069 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:13:01,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:13:01,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:13:01,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:13:01,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:13:01,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:13:01,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:13:01,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:13:01,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:13:01,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:13:01,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:13:01,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:13:01,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:13:01,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:13:01,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-15 03:13:01,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:13:02,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-02-15 03:13:02,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:13:03,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-02-15 03:13:03,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:13:03,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-02-15 03:13:03,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:13:03,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-02-15 03:13:03,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:13:03,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 03:13:03,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:13:03,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:13:03,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:13:03,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:13:03,182 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:13:03,182 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [774768183] [2022-02-15 03:13:03,182 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [774768183] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:13:03,183 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:13:03,183 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-02-15 03:13:03,183 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906680453] [2022-02-15 03:13:03,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:13:03,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-02-15 03:13:03,183 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:13:03,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-02-15 03:13:03,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1936, Unknown=0, NotChecked=0, Total=2070 [2022-02-15 03:13:03,184 INFO L87 Difference]: Start difference. First operand 407 states and 469 transitions. Second operand has 46 states, 46 states have (on average 2.3260869565217392) internal successors, (107), 39 states have internal predecessors, (107), 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) [2022-02-15 03:13:05,324 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 [] [2022-02-15 03:13:12,000 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:13:14,018 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:13:16,262 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:13:18,690 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:13:23,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:13:23,490 INFO L93 Difference]: Finished difference Result 745 states and 880 transitions. [2022-02-15 03:13:23,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-02-15 03:13:23,490 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.3260869565217392) internal successors, (107), 39 states have internal predecessors, (107), 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 137 [2022-02-15 03:13:23,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:13:23,492 INFO L225 Difference]: With dead ends: 745 [2022-02-15 03:13:23,492 INFO L226 Difference]: Without dead ends: 459 [2022-02-15 03:13:23,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 898 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=529, Invalid=6781, Unknown=0, NotChecked=0, Total=7310 [2022-02-15 03:13:23,493 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 270 mSDsluCounter, 1158 mSDsCounter, 0 mSdLazyCounter, 4469 mSolverCounterSat, 238 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 1297 SdHoareTripleChecker+Invalid, 4709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 4469 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.3s IncrementalHoareTripleChecker+Time [2022-02-15 03:13:23,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 1297 Invalid, 4709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 4469 Invalid, 2 Unknown, 0 Unchecked, 17.3s Time] [2022-02-15 03:13:23,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2022-02-15 03:13:23,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 409. [2022-02-15 03:13:23,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 334 states have (on average 1.1826347305389222) internal successors, (395), 338 states have internal predecessors, (395), 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) [2022-02-15 03:13:23,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 471 transitions. [2022-02-15 03:13:23,742 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 471 transitions. Word has length 137 [2022-02-15 03:13:23,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:13:23,742 INFO L470 AbstractCegarLoop]: Abstraction has 409 states and 471 transitions. [2022-02-15 03:13:23,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.3260869565217392) internal successors, (107), 39 states have internal predecessors, (107), 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) [2022-02-15 03:13:23,742 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 471 transitions. [2022-02-15 03:13:23,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-02-15 03:13:23,743 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:13:23,743 INFO L514 BasicCegarLoop]: trace histogram [36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:13:23,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-02-15 03:13:23,743 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:13:23,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:13:23,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1233225233, now seen corresponding path program 36 times [2022-02-15 03:13:23,744 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:13:23,744 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [528100147] [2022-02-15 03:13:23,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:13:23,746 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 03:13:23,746 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 03:13:23,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:13:23,789 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:13:24,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:13:24,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:13:24,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:13:24,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:13:24,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:13:24,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:13:24,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:13:24,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:13:24,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:13:24,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:13:24,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:13:24,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:13:24,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:13:24,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-15 03:13:24,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:13:26,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-02-15 03:13:26,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:13:26,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-02-15 03:13:26,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:13:26,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-02-15 03:13:26,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:13:26,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-02-15 03:13:26,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:13:26,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 03:13:26,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:13:26,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:13:26,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:13:26,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:13:26,436 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:13:26,437 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [528100147] [2022-02-15 03:13:26,437 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [528100147] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:13:26,437 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:13:26,437 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [] total 47 [2022-02-15 03:13:26,437 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197955793] [2022-02-15 03:13:26,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:13:26,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-15 03:13:26,437 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:13:26,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-15 03:13:26,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=2025, Unknown=0, NotChecked=0, Total=2162 [2022-02-15 03:13:26,438 INFO L87 Difference]: Start difference. First operand 409 states and 471 transitions. Second operand has 47 states, 47 states have (on average 2.297872340425532) internal successors, (108), 40 states have internal predecessors, (108), 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) [2022-02-15 03:13:27,592 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:13:29,616 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:13:31,631 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:13:33,651 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:13:35,667 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:13:37,429 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:13:39,450 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:13:41,476 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:13:43,491 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:13:45,511 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:13:47,536 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:13:49,551 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:13:51,580 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:13:53,600 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:13:55,618 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:13:57,642 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:13:59,657 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:14:01,674 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:14:03,697 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:14:05,713 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:14:07,729 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:14:09,750 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:14:11,771 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:14:13,793 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:14:15,812 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:14:17,831 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:14:19,849 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:14:21,867 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:14:23,891 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:14:25,906 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:14:36,222 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:14:37,842 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:14:43,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:14:43,080 INFO L93 Difference]: Finished difference Result 747 states and 882 transitions. [2022-02-15 03:14:43,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-02-15 03:14:43,081 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.297872340425532) internal successors, (108), 40 states have internal predecessors, (108), 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 138 [2022-02-15 03:14:43,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:14:43,083 INFO L225 Difference]: With dead ends: 747 [2022-02-15 03:14:43,083 INFO L226 Difference]: Without dead ends: 461 [2022-02-15 03:14:43,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 941 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=542, Invalid=7114, Unknown=0, NotChecked=0, Total=7656 [2022-02-15 03:14:43,084 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 142 mSDsluCounter, 1393 mSDsCounter, 0 mSdLazyCounter, 5196 mSolverCounterSat, 145 mSolverCounterUnsat, 28 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 72.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1532 SdHoareTripleChecker+Invalid, 5369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 5196 IncrementalHoareTripleChecker+Invalid, 28 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 73.5s IncrementalHoareTripleChecker+Time [2022-02-15 03:14:43,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 1532 Invalid, 5369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 5196 Invalid, 28 Unknown, 0 Unchecked, 73.5s Time] [2022-02-15 03:14:43,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2022-02-15 03:14:43,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 411. [2022-02-15 03:14:43,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 336 states have (on average 1.181547619047619) internal successors, (397), 340 states have internal predecessors, (397), 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) [2022-02-15 03:14:43,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 473 transitions. [2022-02-15 03:14:43,318 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 473 transitions. Word has length 138 [2022-02-15 03:14:43,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:14:43,318 INFO L470 AbstractCegarLoop]: Abstraction has 411 states and 473 transitions. [2022-02-15 03:14:43,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.297872340425532) internal successors, (108), 40 states have internal predecessors, (108), 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) [2022-02-15 03:14:43,319 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 473 transitions. [2022-02-15 03:14:43,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-02-15 03:14:43,320 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:14:43,320 INFO L514 BasicCegarLoop]: trace histogram [37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:14:43,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-02-15 03:14:43,320 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:14:43,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:14:43,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1534483427, now seen corresponding path program 37 times [2022-02-15 03:14:43,321 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:14:43,321 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717735437] [2022-02-15 03:14:43,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:14:43,323 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 03:14:43,323 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 03:14:43,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:14:43,368 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:14:43,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:14:43,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:14:43,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:14:43,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:14:43,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:14:43,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:14:43,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:14:43,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:14:43,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:14:43,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:14:43,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:14:44,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:14:44,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:14:44,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-15 03:14:44,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:14:45,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-02-15 03:14:45,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:14:45,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-02-15 03:14:45,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:14:45,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-02-15 03:14:45,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:14:45,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-02-15 03:14:45,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:14:45,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 03:14:45,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:14:45,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:14:45,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:14:45,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:14:45,780 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:14:45,780 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [717735437] [2022-02-15 03:14:45,780 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [717735437] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:14:45,780 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:14:45,780 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2022-02-15 03:14:45,780 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387106975] [2022-02-15 03:14:45,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:14:45,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-15 03:14:45,780 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:14:45,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-15 03:14:45,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=2116, Unknown=0, NotChecked=0, Total=2256 [2022-02-15 03:14:45,781 INFO L87 Difference]: Start difference. First operand 411 states and 473 transitions. Second operand has 48 states, 48 states have (on average 2.2708333333333335) internal successors, (109), 41 states have internal predecessors, (109), 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) [2022-02-15 03:14:48,768 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:14:50,792 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:14:52,815 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 []