/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/ntdrivers/kbfiltr.i.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05ce600 [2022-02-24 04:37:07,628 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-24 04:37:07,629 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-24 04:37:07,653 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-24 04:37:07,653 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-24 04:37:07,654 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-24 04:37:07,655 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-24 04:37:07,660 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-24 04:37:07,662 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-24 04:37:07,662 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-24 04:37:07,663 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-24 04:37:07,663 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-24 04:37:07,664 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-24 04:37:07,664 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-24 04:37:07,665 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-24 04:37:07,666 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-24 04:37:07,666 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-24 04:37:07,667 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-24 04:37:07,668 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-24 04:37:07,669 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-24 04:37:07,670 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-24 04:37:07,677 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-24 04:37:07,681 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-24 04:37:07,682 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-24 04:37:07,688 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-24 04:37:07,693 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-24 04:37:07,694 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-24 04:37:07,694 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-24 04:37:07,701 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-02-24 04:37:07,713 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-24 04:37:07,713 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-24 04:37:07,715 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-24 04:37:07,715 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-24 04:37:07,715 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-24 04:37:07,715 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-24 04:37:07,715 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-24 04:37:07,715 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-24 04:37:07,715 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-24 04:37:07,715 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-24 04:37:07,716 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-24 04:37:07,716 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-24 04:37:07,716 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-24 04:37:07,716 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-24 04:37:07,716 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-24 04:37:07,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-24 04:37:07,716 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-24 04:37:07,716 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-24 04:37:07,717 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-24 04:37:07,717 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-02-24 04:37:07,717 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-24 04:37:07,901 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-24 04:37:07,927 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-24 04:37:07,929 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-24 04:37:07,930 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-24 04:37:07,930 INFO L275 PluginConnector]: CDTParser initialized [2022-02-24 04:37:07,931 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers/kbfiltr.i.cil-2.c [2022-02-24 04:37:07,966 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/770e8b7e8/5f17e32a82f842639c643f9a5983c74c/FLAG43235d325 [2022-02-24 04:37:08,433 INFO L306 CDTParser]: Found 1 translation units. [2022-02-24 04:37:08,433 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/kbfiltr.i.cil-2.c [2022-02-24 04:37:08,470 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/770e8b7e8/5f17e32a82f842639c643f9a5983c74c/FLAG43235d325 [2022-02-24 04:37:08,482 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/770e8b7e8/5f17e32a82f842639c643f9a5983c74c [2022-02-24 04:37:08,484 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-24 04:37:08,485 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-24 04:37:08,488 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-24 04:37:08,488 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-24 04:37:08,490 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-24 04:37:08,490 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:37:08" (1/1) ... [2022-02-24 04:37:08,491 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cadf240 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:37:08, skipping insertion in model container [2022-02-24 04:37:08,491 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:37:08" (1/1) ... [2022-02-24 04:37:08,495 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-24 04:37:08,551 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-24 04:37:08,934 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/kbfiltr.i.cil-2.c[62209,62222] [2022-02-24 04:37:09,106 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-24 04:37:09,117 INFO L203 MainTranslator]: Completed pre-run [2022-02-24 04:37:09,172 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/kbfiltr.i.cil-2.c[62209,62222] [2022-02-24 04:37:09,249 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-24 04:37:09,270 INFO L208 MainTranslator]: Completed translation [2022-02-24 04:37:09,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:37:09 WrapperNode [2022-02-24 04:37:09,270 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-24 04:37:09,271 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-24 04:37:09,271 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-24 04:37:09,271 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-24 04:37:09,279 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:37:09" (1/1) ... [2022-02-24 04:37:09,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:37:09" (1/1) ... [2022-02-24 04:37:09,323 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:37:09" (1/1) ... [2022-02-24 04:37:09,324 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:37:09" (1/1) ... [2022-02-24 04:37:09,374 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:37:09" (1/1) ... [2022-02-24 04:37:09,380 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:37:09" (1/1) ... [2022-02-24 04:37:09,387 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:37:09" (1/1) ... [2022-02-24 04:37:09,396 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-24 04:37:09,396 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-24 04:37:09,396 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-24 04:37:09,397 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-24 04:37:09,403 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:37:09" (1/1) ... [2022-02-24 04:37:09,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-24 04:37:09,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-24 04:37:09,434 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-24 04:37:09,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-24 04:37:09,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-24 04:37:09,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-24 04:37:09,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~PVOID~0~X~~PVOID~0~X~$Pointer$~X~$Pointer$~X~~PBOOLEAN~0~TO~~NTSTATUS~0 [2022-02-24 04:37:09,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~PVOID~0~X~~PKEYBOARD_INPUT_DATA~0~X~~POUTPUT_PACKET~0~X~~UCHAR~0~X~~PUCHAR~0~X~~PBOOLEAN~0~X~~PKEYBOARD_SCAN_STATE~0~TO~~BOOLEAN~0 [2022-02-24 04:37:09,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~PVOID~0~X~~PVOID~0~X~~PVOID~0~X~~PVOID~0~TO~VOID [2022-02-24 04:37:09,480 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-24 04:37:09,480 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-02-24 04:37:09,480 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedIncrement [2022-02-24 04:37:09,480 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedDecrement [2022-02-24 04:37:09,480 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_IoCtl [2022-02-24 04:37:09,480 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-02-24 04:37:09,480 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-02-24 04:37:09,480 INFO L138 BoogieDeclarations]: Found implementation of procedure DriverEntry [2022-02-24 04:37:09,480 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_AddDevice [2022-02-24 04:37:09,481 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2022-02-24 04:37:09,481 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_CreateClose [2022-02-24 04:37:09,481 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_DispatchPassThrough [2022-02-24 04:37:09,481 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_InternIoCtl [2022-02-24 04:37:09,481 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_PnP [2022-02-24 04:37:09,481 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Power [2022-02-24 04:37:09,481 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_InitializationRoutine [2022-02-24 04:37:09,481 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_IsrHook [2022-02-24 04:37:09,481 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_ServiceCallback [2022-02-24 04:37:09,481 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Unload [2022-02-24 04:37:09,481 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-02-24 04:37:09,482 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-24 04:37:09,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAcquireFastMutex [2022-02-24 04:37:09,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ExReleaseFastMutex [2022-02-24 04:37:09,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2022-02-24 04:37:09,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ExFreePool [2022-02-24 04:37:09,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertHeadList [2022-02-24 04:37:09,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertTailList [2022-02-24 04:37:09,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedRemoveHeadList [2022-02-24 04:37:09,482 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAllocateMdl [2022-02-24 04:37:09,482 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAttachDeviceToDeviceStack [2022-02-24 04:37:09,482 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildAsynchronousFsdRequest [2022-02-24 04:37:09,482 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2022-02-24 04:37:09,482 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateDevice [2022-02-24 04:37:09,482 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateSymbolicLink [2022-02-24 04:37:09,483 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteDevice [2022-02-24 04:37:09,483 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2022-02-24 04:37:09,483 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDetachDevice [2022-02-24 04:37:09,483 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeIrp [2022-02-24 04:37:09,483 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeMdl [2022-02-24 04:37:09,483 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2022-02-24 04:37:09,483 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2022-02-24 04:37:09,483 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2022-02-24 04:37:09,483 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReleaseCancelSpinLock [2022-02-24 04:37:09,483 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-02-24 04:37:09,483 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetHardErrorOrVerifyDevice [2022-02-24 04:37:09,483 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-02-24 04:37:09,483 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-02-24 04:37:09,484 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-02-24 04:37:09,484 INFO L138 BoogieDeclarations]: Found implementation of procedure KeAcquireSpinLockRaiseToDpc [2022-02-24 04:37:09,484 INFO L138 BoogieDeclarations]: Found implementation of procedure KeDelayExecutionThread [2022-02-24 04:37:09,484 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeEvent [2022-02-24 04:37:09,484 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSemaphore [2022-02-24 04:37:09,484 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSpinLock [2022-02-24 04:37:09,484 INFO L138 BoogieDeclarations]: Found implementation of procedure KeReleaseSemaphore [2022-02-24 04:37:09,484 INFO L138 BoogieDeclarations]: Found implementation of procedure KfReleaseSpinLock [2022-02-24 04:37:09,484 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-02-24 04:37:09,484 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-02-24 04:37:09,484 INFO L138 BoogieDeclarations]: Found implementation of procedure MmAllocateContiguousMemory [2022-02-24 04:37:09,484 INFO L138 BoogieDeclarations]: Found implementation of procedure MmFreeContiguousMemory [2022-02-24 04:37:09,484 INFO L138 BoogieDeclarations]: Found implementation of procedure MmMapLockedPagesSpecifyCache [2022-02-24 04:37:09,485 INFO L138 BoogieDeclarations]: Found implementation of procedure MmPageEntireDriver [2022-02-24 04:37:09,485 INFO L138 BoogieDeclarations]: Found implementation of procedure MmResetDriverPaging [2022-02-24 04:37:09,485 INFO L138 BoogieDeclarations]: Found implementation of procedure MmUnlockPages [2022-02-24 04:37:09,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2022-02-24 04:37:09,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ObfDereferenceObject [2022-02-24 04:37:09,485 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-02-24 04:37:09,485 INFO L138 BoogieDeclarations]: Found implementation of procedure PoStartNextPowerIrp [2022-02-24 04:37:09,485 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2022-02-24 04:37:09,485 INFO L138 BoogieDeclarations]: Found implementation of procedure PsTerminateSystemThread [2022-02-24 04:37:09,485 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlAnsiStringToUnicodeString [2022-02-24 04:37:09,485 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCompareMemory [2022-02-24 04:37:09,485 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCopyUnicodeString [2022-02-24 04:37:09,485 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlDeleteRegistryValue [2022-02-24 04:37:09,485 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlFreeUnicodeString [2022-02-24 04:37:09,486 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitString [2022-02-24 04:37:09,486 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitUnicodeString [2022-02-24 04:37:09,486 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlQueryRegistryValues [2022-02-24 04:37:09,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-02-24 04:37:09,486 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-02-24 04:37:09,486 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-02-24 04:37:09,486 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-24 04:37:09,486 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-24 04:37:09,486 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-24 04:37:09,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-24 04:37:09,486 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-02-24 04:37:09,486 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-24 04:37:09,487 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-02-24 04:37:09,487 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2022-02-24 04:37:09,487 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-02-24 04:37:09,487 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2022-02-24 04:37:09,487 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2022-02-24 04:37:09,487 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2022-02-24 04:37:09,487 INFO L130 BoogieDeclarations]: Found specification of procedure RtlQueryRegistryValues [2022-02-24 04:37:09,487 INFO L130 BoogieDeclarations]: Found specification of procedure RtlDeleteRegistryValue [2022-02-24 04:37:09,487 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitString [2022-02-24 04:37:09,487 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitUnicodeString [2022-02-24 04:37:09,487 INFO L130 BoogieDeclarations]: Found specification of procedure RtlAnsiStringToUnicodeString [2022-02-24 04:37:09,487 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCopyUnicodeString [2022-02-24 04:37:09,487 INFO L130 BoogieDeclarations]: Found specification of procedure RtlFreeUnicodeString [2022-02-24 04:37:09,487 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCompareMemory [2022-02-24 04:37:09,488 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedIncrement [2022-02-24 04:37:09,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-24 04:37:09,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-24 04:37:09,488 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedDecrement [2022-02-24 04:37:09,488 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeEvent [2022-02-24 04:37:09,488 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-02-24 04:37:09,488 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSemaphore [2022-02-24 04:37:09,488 INFO L130 BoogieDeclarations]: Found specification of procedure KeReleaseSemaphore [2022-02-24 04:37:09,488 INFO L130 BoogieDeclarations]: Found specification of procedure KeDelayExecutionThread [2022-02-24 04:37:09,488 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-02-24 04:37:09,488 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSpinLock [2022-02-24 04:37:09,488 INFO L130 BoogieDeclarations]: Found specification of procedure KfReleaseSpinLock [2022-02-24 04:37:09,488 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2022-02-24 04:37:09,488 INFO L130 BoogieDeclarations]: Found specification of procedure ExFreePool [2022-02-24 04:37:09,488 INFO L130 BoogieDeclarations]: Found specification of procedure ExAcquireFastMutex [2022-02-24 04:37:09,488 INFO L130 BoogieDeclarations]: Found specification of procedure ExReleaseFastMutex [2022-02-24 04:37:09,488 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertHeadList [2022-02-24 04:37:09,488 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertTailList [2022-02-24 04:37:09,489 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedRemoveHeadList [2022-02-24 04:37:09,489 INFO L130 BoogieDeclarations]: Found specification of procedure MmUnlockPages [2022-02-24 04:37:09,489 INFO L130 BoogieDeclarations]: Found specification of procedure MmMapLockedPagesSpecifyCache [2022-02-24 04:37:09,489 INFO L130 BoogieDeclarations]: Found specification of procedure MmAllocateContiguousMemory [2022-02-24 04:37:09,489 INFO L130 BoogieDeclarations]: Found specification of procedure MmFreeContiguousMemory [2022-02-24 04:37:09,489 INFO L130 BoogieDeclarations]: Found specification of procedure MmResetDriverPaging [2022-02-24 04:37:09,489 INFO L130 BoogieDeclarations]: Found specification of procedure MmPageEntireDriver [2022-02-24 04:37:09,489 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2022-02-24 04:37:09,489 INFO L130 BoogieDeclarations]: Found specification of procedure PsTerminateSystemThread [2022-02-24 04:37:09,489 INFO L130 BoogieDeclarations]: Found specification of procedure IoAllocateMdl [2022-02-24 04:37:09,489 INFO L130 BoogieDeclarations]: Found specification of procedure IoAttachDeviceToDeviceStack [2022-02-24 04:37:09,489 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildAsynchronousFsdRequest [2022-02-24 04:37:09,489 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2022-02-24 04:37:09,489 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-02-24 04:37:09,489 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-02-24 04:37:09,489 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateDevice [2022-02-24 04:37:09,490 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateSymbolicLink [2022-02-24 04:37:09,490 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteDevice [2022-02-24 04:37:09,490 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2022-02-24 04:37:09,490 INFO L130 BoogieDeclarations]: Found specification of procedure IoDetachDevice [2022-02-24 04:37:09,490 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeIrp [2022-02-24 04:37:09,490 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeMdl [2022-02-24 04:37:09,490 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2022-02-24 04:37:09,490 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2022-02-24 04:37:09,490 INFO L130 BoogieDeclarations]: Found specification of procedure IoReleaseCancelSpinLock [2022-02-24 04:37:09,490 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetHardErrorOrVerifyDevice [2022-02-24 04:37:09,490 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2022-02-24 04:37:09,490 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-02-24 04:37:09,490 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-02-24 04:37:09,490 INFO L130 BoogieDeclarations]: Found specification of procedure PoStartNextPowerIrp [2022-02-24 04:37:09,490 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2022-02-24 04:37:09,490 INFO L130 BoogieDeclarations]: Found specification of procedure ObfDereferenceObject [2022-02-24 04:37:09,490 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-02-24 04:37:09,491 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_AddDevice [2022-02-24 04:37:09,491 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_CreateClose [2022-02-24 04:37:09,491 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_DispatchPassThrough [2022-02-24 04:37:09,491 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_InternIoCtl [2022-02-24 04:37:09,491 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_IoCtl [2022-02-24 04:37:09,491 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_PnP [2022-02-24 04:37:09,491 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Power [2022-02-24 04:37:09,491 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_InitializationRoutine [2022-02-24 04:37:09,491 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_IsrHook [2022-02-24 04:37:09,491 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_ServiceCallback [2022-02-24 04:37:09,491 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Unload [2022-02-24 04:37:09,491 INFO L130 BoogieDeclarations]: Found specification of procedure DriverEntry [2022-02-24 04:37:09,491 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-02-24 04:37:09,491 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-02-24 04:37:09,491 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-02-24 04:37:09,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-02-24 04:37:09,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-02-24 04:37:09,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-24 04:37:09,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-24 04:37:09,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-02-24 04:37:09,492 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2022-02-24 04:37:09,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-02-24 04:37:09,492 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~PVOID~0~X~~PVOID~0~X~$Pointer$~X~$Pointer$~X~~PBOOLEAN~0~TO~~NTSTATUS~0 [2022-02-24 04:37:09,492 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~PVOID~0~X~~PKEYBOARD_INPUT_DATA~0~X~~POUTPUT_PACKET~0~X~~UCHAR~0~X~~PUCHAR~0~X~~PBOOLEAN~0~X~~PKEYBOARD_SCAN_STATE~0~TO~~BOOLEAN~0 [2022-02-24 04:37:09,492 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~PVOID~0~X~~PVOID~0~X~~PVOID~0~X~~PVOID~0~TO~VOID [2022-02-24 04:37:09,492 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-02-24 04:37:09,492 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2022-02-24 04:37:09,492 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-24 04:37:09,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-02-24 04:37:09,503 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-02-24 04:37:09,503 INFO L130 BoogieDeclarations]: Found specification of procedure KeAcquireSpinLockRaiseToDpc [2022-02-24 04:37:09,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-24 04:37:09,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-24 04:37:09,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-24 04:37:09,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-02-24 04:37:09,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-02-24 04:37:09,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-02-24 04:37:09,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-02-24 04:37:09,853 INFO L234 CfgBuilder]: Building ICFG [2022-02-24 04:37:09,855 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-24 04:37:09,882 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:37:09,904 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:37:09,905 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:37:09,905 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:37:09,910 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:37:09,910 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:37:09,919 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:37:09,923 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:37:09,924 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:37:09,924 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:37:09,932 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:37:09,932 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:37:09,935 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:37:09,940 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:37:09,940 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:37:10,185 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:37:10,191 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:37:10,191 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:37:10,191 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:37:10,199 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:37:10,199 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:37:10,200 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:37:10,212 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:37:10,212 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:37:10,229 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:37:10,237 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:37:10,237 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:37:10,237 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:37:10,245 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:37:10,245 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:37:10,246 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:37:10,253 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:37:10,253 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:37:10,296 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:37:10,304 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:37:10,304 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:37:10,304 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:37:10,308 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:37:10,308 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:37:10,317 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:37:10,455 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2022-02-24 04:37:10,456 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2022-02-24 04:37:10,465 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:37:10,485 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-02-24 04:37:10,485 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-02-24 04:37:10,497 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:37:10,502 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:37:10,502 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:37:10,505 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:37:11,297 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-02-24 04:37:11,298 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-02-24 04:37:11,405 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:37:11,409 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:37:11,409 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:37:11,512 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:37:11,517 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:37:11,517 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:37:11,528 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:37:11,545 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-02-24 04:37:11,545 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-02-24 04:37:11,550 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:37:11,557 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-02-24 04:37:11,558 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-02-24 04:37:11,573 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:37:11,577 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:37:11,577 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:37:11,579 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:37:11,596 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2022-02-24 04:37:11,596 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2022-02-24 04:37:11,598 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:37:11,602 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:37:11,602 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:37:11,617 INFO L275 CfgBuilder]: Performing block encoding [2022-02-24 04:37:11,624 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-24 04:37:11,624 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-24 04:37:11,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:37:11 BoogieIcfgContainer [2022-02-24 04:37:11,626 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-24 04:37:11,627 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-24 04:37:11,627 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-24 04:37:11,629 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-24 04:37:11,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:37:08" (1/3) ... [2022-02-24 04:37:11,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46284794 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:37:11, skipping insertion in model container [2022-02-24 04:37:11,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:37:09" (2/3) ... [2022-02-24 04:37:11,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46284794 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:37:11, skipping insertion in model container [2022-02-24 04:37:11,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:37:11" (3/3) ... [2022-02-24 04:37:11,631 INFO L111 eAbstractionObserver]: Analyzing ICFG kbfiltr.i.cil-2.c [2022-02-24 04:37:11,634 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-24 04:37:11,634 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-24 04:37:11,660 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-24 04:37:11,665 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=QVASR [2022-02-24 04:37:11,666 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-24 04:37:11,689 INFO L276 IsEmpty]: Start isEmpty. Operand has 308 states, 230 states have (on average 1.5) internal successors, (345), 248 states have internal predecessors, (345), 49 states have call successors, (49), 27 states have call predecessors, (49), 27 states have return successors, (49), 47 states have call predecessors, (49), 49 states have call successors, (49) [2022-02-24 04:37:11,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-24 04:37:11,697 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:37:11,698 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:37:11,698 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:37:11,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:37:11,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1774662017, now seen corresponding path program 1 times [2022-02-24 04:37:11,714 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:37:11,714 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [180244309] [2022-02-24 04:37:11,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:37:11,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:37:11,812 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:37:11,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:12,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:37:12,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:12,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:37:12,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:12,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:37:12,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:12,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:37:12,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:12,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:37:12,311 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:37:12,311 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [180244309] [2022-02-24 04:37:12,312 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [180244309] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:37:12,312 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:37:12,312 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-24 04:37:12,313 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906553691] [2022-02-24 04:37:12,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:37:12,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-24 04:37:12,317 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:37:12,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-24 04:37:12,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-02-24 04:37:12,342 INFO L87 Difference]: Start difference. First operand has 308 states, 230 states have (on average 1.5) internal successors, (345), 248 states have internal predecessors, (345), 49 states have call successors, (49), 27 states have call predecessors, (49), 27 states have return successors, (49), 47 states have call predecessors, (49), 49 states have call successors, (49) Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-02-24 04:37:14,405 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:37:15,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:37:15,900 INFO L93 Difference]: Finished difference Result 643 states and 953 transitions. [2022-02-24 04:37:15,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-24 04:37:15,902 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 31 [2022-02-24 04:37:15,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:37:15,910 INFO L225 Difference]: With dead ends: 643 [2022-02-24 04:37:15,910 INFO L226 Difference]: Without dead ends: 343 [2022-02-24 04:37:15,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-02-24 04:37:15,915 INFO L933 BasicCegarLoop]: 335 mSDtfsCounter, 597 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 220 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s 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 [2022-02-24 04:37:15,916 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] [2022-02-24 04:37:15,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-02-24 04:37:15,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 299. [2022-02-24 04:37:15,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 224 states have (on average 1.4464285714285714) internal successors, (324), 240 states have internal predecessors, (324), 49 states have call successors, (49), 27 states have call predecessors, (49), 25 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-02-24 04:37:15,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 407 transitions. [2022-02-24 04:37:15,973 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 407 transitions. Word has length 31 [2022-02-24 04:37:15,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:37:15,974 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 407 transitions. [2022-02-24 04:37:15,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-02-24 04:37:15,974 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 407 transitions. [2022-02-24 04:37:15,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-24 04:37:15,975 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:37:15,975 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:37:15,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-24 04:37:15,975 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:37:15,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:37:15,975 INFO L85 PathProgramCache]: Analyzing trace with hash 186314115, now seen corresponding path program 1 times [2022-02-24 04:37:15,976 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:37:15,976 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1341185362] [2022-02-24 04:37:15,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:37:15,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:37:15,983 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:37:16,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:16,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:37:16,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:16,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:37:16,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:16,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:37:16,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:16,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:37:16,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:16,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:37:16,267 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:37:16,267 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1341185362] [2022-02-24 04:37:16,267 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1341185362] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:37:16,267 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:37:16,267 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-24 04:37:16,267 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237301611] [2022-02-24 04:37:16,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:37:16,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-24 04:37:16,268 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:37:16,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-24 04:37:16,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-02-24 04:37:16,269 INFO L87 Difference]: Start difference. First operand 299 states and 407 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-02-24 04:37:18,360 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:37:21,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:37:21,318 INFO L93 Difference]: Finished difference Result 360 states and 492 transitions. [2022-02-24 04:37:21,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-24 04:37:21,319 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 31 [2022-02-24 04:37:21,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:37:21,322 INFO L225 Difference]: With dead ends: 360 [2022-02-24 04:37:21,322 INFO L226 Difference]: Without dead ends: 343 [2022-02-24 04:37:21,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-02-24 04:37:21,323 INFO L933 BasicCegarLoop]: 314 mSDtfsCounter, 395 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 1531 mSolverCounterSat, 148 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 1680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 1531 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-02-24 04:37:21,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [401 Valid, 683 Invalid, 1680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 1531 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2022-02-24 04:37:21,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-02-24 04:37:21,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 299. [2022-02-24 04:37:21,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 224 states have (on average 1.4419642857142858) internal successors, (323), 240 states have internal predecessors, (323), 49 states have call successors, (49), 27 states have call predecessors, (49), 25 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-02-24 04:37:21,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 406 transitions. [2022-02-24 04:37:21,358 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 406 transitions. Word has length 31 [2022-02-24 04:37:21,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:37:21,358 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 406 transitions. [2022-02-24 04:37:21,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-02-24 04:37:21,358 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 406 transitions. [2022-02-24 04:37:21,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-02-24 04:37:21,359 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:37:21,359 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:37:21,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-24 04:37:21,360 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:37:21,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:37:21,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1201516382, now seen corresponding path program 1 times [2022-02-24 04:37:21,360 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:37:21,360 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [317144186] [2022-02-24 04:37:21,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:37:21,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:37:21,368 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:37:21,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:21,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:37:21,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:21,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:37:21,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:21,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:37:21,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:21,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:37:21,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:21,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:37:21,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:21,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:37:21,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:21,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-24 04:37:21,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:21,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:37:21,744 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:37:21,746 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [317144186] [2022-02-24 04:37:21,746 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [317144186] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:37:21,746 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:37:21,746 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-24 04:37:21,746 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938077532] [2022-02-24 04:37:21,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:37:21,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-24 04:37:21,749 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:37:21,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-24 04:37:21,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-02-24 04:37:21,750 INFO L87 Difference]: Start difference. First operand 299 states and 406 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (11), 7 states have call predecessors, (11), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-24 04:37:23,836 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:37:28,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:37:28,519 INFO L93 Difference]: Finished difference Result 599 states and 829 transitions. [2022-02-24 04:37:28,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-24 04:37:28,520 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (11), 7 states have call predecessors, (11), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 53 [2022-02-24 04:37:28,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:37:28,522 INFO L225 Difference]: With dead ends: 599 [2022-02-24 04:37:28,522 INFO L226 Difference]: Without dead ends: 348 [2022-02-24 04:37:28,523 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 [2022-02-24 04:37:28,524 INFO L933 BasicCegarLoop]: 312 mSDtfsCounter, 609 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 1671 mSolverCounterSat, 252 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 1924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 1671 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-02-24 04:37:28,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [612 Valid, 792 Invalid, 1924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 1671 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2022-02-24 04:37:28,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2022-02-24 04:37:28,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 303. [2022-02-24 04:37:28,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 227 states have (on average 1.4361233480176212) internal successors, (326), 243 states have internal predecessors, (326), 49 states have call successors, (49), 27 states have call predecessors, (49), 26 states have return successors, (35), 35 states have call predecessors, (35), 34 states have call successors, (35) [2022-02-24 04:37:28,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 410 transitions. [2022-02-24 04:37:28,586 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 410 transitions. Word has length 53 [2022-02-24 04:37:28,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:37:28,587 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 410 transitions. [2022-02-24 04:37:28,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (11), 7 states have call predecessors, (11), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-24 04:37:28,587 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 410 transitions. [2022-02-24 04:37:28,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-02-24 04:37:28,594 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:37:28,594 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:37:28,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-24 04:37:28,594 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:37:28,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:37:28,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1078281185, now seen corresponding path program 1 times [2022-02-24 04:37:28,595 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:37:28,595 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [392431875] [2022-02-24 04:37:28,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:37:28,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:37:28,604 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:37:28,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:28,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:37:28,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:28,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:37:28,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:28,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:37:28,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:28,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:37:28,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:28,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:37:28,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:28,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:37:28,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:28,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-24 04:37:28,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:28,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:37:28,873 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:37:28,873 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [392431875] [2022-02-24 04:37:28,873 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [392431875] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:37:28,873 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:37:28,873 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-24 04:37:28,873 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581380916] [2022-02-24 04:37:28,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:37:28,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-24 04:37:28,874 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:37:28,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-24 04:37:28,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-02-24 04:37:28,874 INFO L87 Difference]: Start difference. First operand 303 states and 410 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-02-24 04:37:30,987 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:37:33,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:37:33,068 INFO L93 Difference]: Finished difference Result 492 states and 667 transitions. [2022-02-24 04:37:33,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-24 04:37:33,069 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 53 [2022-02-24 04:37:33,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:37:33,071 INFO L225 Difference]: With dead ends: 492 [2022-02-24 04:37:33,071 INFO L226 Difference]: Without dead ends: 431 [2022-02-24 04:37:33,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-02-24 04:37:33,072 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 864 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 299 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s 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, 3.9s IncrementalHoareTripleChecker+Time [2022-02-24 04:37:33,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [869 Valid, 615 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 808 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2022-02-24 04:37:33,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2022-02-24 04:37:33,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 374. [2022-02-24 04:37:33,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 288 states have (on average 1.3715277777777777) internal successors, (395), 292 states have internal predecessors, (395), 48 states have call successors, (48), 33 states have call predecessors, (48), 37 states have return successors, (55), 51 states have call predecessors, (55), 39 states have call successors, (55) [2022-02-24 04:37:33,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 498 transitions. [2022-02-24 04:37:33,143 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 498 transitions. Word has length 53 [2022-02-24 04:37:33,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:37:33,145 INFO L470 AbstractCegarLoop]: Abstraction has 374 states and 498 transitions. [2022-02-24 04:37:33,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-02-24 04:37:33,145 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 498 transitions. [2022-02-24 04:37:33,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-02-24 04:37:33,147 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:37:33,147 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:37:33,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-24 04:37:33,147 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:37:33,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:37:33,148 INFO L85 PathProgramCache]: Analyzing trace with hash 17478568, now seen corresponding path program 1 times [2022-02-24 04:37:33,149 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:37:33,149 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1857530907] [2022-02-24 04:37:33,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:37:33,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:37:33,174 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:37:33,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:33,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:37:33,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:33,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:37:33,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:33,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:37:33,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:33,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:37:33,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:33,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:37:33,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:33,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:37:33,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:33,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-24 04:37:33,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:33,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-02-24 04:37:33,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:33,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:37:33,443 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:37:33,444 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1857530907] [2022-02-24 04:37:33,444 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1857530907] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:37:33,444 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:37:33,444 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-24 04:37:33,444 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062125321] [2022-02-24 04:37:33,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:37:33,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-24 04:37:33,444 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:37:33,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-24 04:37:33,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-02-24 04:37:33,445 INFO L87 Difference]: Start difference. First operand 374 states and 498 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 04:37:35,595 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:37:37,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:37:37,197 INFO L93 Difference]: Finished difference Result 569 states and 751 transitions. [2022-02-24 04:37:37,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-24 04:37:37,197 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 60 [2022-02-24 04:37:37,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:37:37,200 INFO L225 Difference]: With dead ends: 569 [2022-02-24 04:37:37,200 INFO L226 Difference]: Without dead ends: 450 [2022-02-24 04:37:37,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-02-24 04:37:37,201 INFO L933 BasicCegarLoop]: 320 mSDtfsCounter, 974 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 330 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s 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, 3.4s IncrementalHoareTripleChecker+Time [2022-02-24 04:37:37,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [986 Valid, 489 Invalid, 981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 650 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2022-02-24 04:37:37,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-02-24 04:37:37,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 410. [2022-02-24 04:37:37,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 325 states have (on average 1.3723076923076922) internal successors, (446), 327 states have internal predecessors, (446), 44 states have call successors, (44), 33 states have call predecessors, (44), 40 states have return successors, (55), 50 states have call predecessors, (55), 37 states have call successors, (55) [2022-02-24 04:37:37,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 545 transitions. [2022-02-24 04:37:37,249 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 545 transitions. Word has length 60 [2022-02-24 04:37:37,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:37:37,249 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 545 transitions. [2022-02-24 04:37:37,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 04:37:37,250 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 545 transitions. [2022-02-24 04:37:37,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-02-24 04:37:37,250 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:37:37,250 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:37:37,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-24 04:37:37,251 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:37:37,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:37:37,251 INFO L85 PathProgramCache]: Analyzing trace with hash -110356200, now seen corresponding path program 1 times [2022-02-24 04:37:37,251 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:37:37,251 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [444799883] [2022-02-24 04:37:37,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:37:37,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:37:37,258 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:37:37,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:37,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:37:37,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:37,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:37:37,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:37,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:37:37,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:37,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:37:37,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:37,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:37:37,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:37,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:37:37,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:37,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-24 04:37:37,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:37,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-02-24 04:37:37,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:37,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:37:37,589 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:37:37,589 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [444799883] [2022-02-24 04:37:37,589 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [444799883] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:37:37,589 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:37:37,589 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-24 04:37:37,589 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84859937] [2022-02-24 04:37:37,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:37:37,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-24 04:37:37,591 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:37:37,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-24 04:37:37,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-02-24 04:37:37,591 INFO L87 Difference]: Start difference. First operand 410 states and 545 transitions. Second operand has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 6 states have internal predecessors, (42), 4 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-02-24 04:37:39,740 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:37:42,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:37:42,014 INFO L93 Difference]: Finished difference Result 450 states and 594 transitions. [2022-02-24 04:37:42,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-24 04:37:42,015 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 6 states have internal predecessors, (42), 4 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 60 [2022-02-24 04:37:42,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:37:42,017 INFO L225 Difference]: With dead ends: 450 [2022-02-24 04:37:42,017 INFO L226 Difference]: Without dead ends: 442 [2022-02-24 04:37:42,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2022-02-24 04:37:42,018 INFO L933 BasicCegarLoop]: 332 mSDtfsCounter, 1505 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 517 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 1262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 517 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-02-24 04:37:42,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1514 Valid, 539 Invalid, 1262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [517 Valid, 744 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2022-02-24 04:37:42,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2022-02-24 04:37:42,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 415. [2022-02-24 04:37:42,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 330 states have (on average 1.3696969696969696) internal successors, (452), 332 states have internal predecessors, (452), 44 states have call successors, (44), 33 states have call predecessors, (44), 40 states have return successors, (55), 50 states have call predecessors, (55), 37 states have call successors, (55) [2022-02-24 04:37:42,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 551 transitions. [2022-02-24 04:37:42,071 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 551 transitions. Word has length 60 [2022-02-24 04:37:42,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:37:42,071 INFO L470 AbstractCegarLoop]: Abstraction has 415 states and 551 transitions. [2022-02-24 04:37:42,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 6 states have internal predecessors, (42), 4 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-02-24 04:37:42,071 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 551 transitions. [2022-02-24 04:37:42,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-02-24 04:37:42,072 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:37:42,072 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:37:42,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-24 04:37:42,072 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:37:42,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:37:42,073 INFO L85 PathProgramCache]: Analyzing trace with hash 400358010, now seen corresponding path program 1 times [2022-02-24 04:37:42,073 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:37:42,073 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1125839945] [2022-02-24 04:37:42,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:37:42,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:37:42,080 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:37:42,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:42,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:37:42,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:42,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:37:42,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:42,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:37:42,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:42,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:37:42,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:42,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:37:42,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:42,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:37:42,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:42,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-24 04:37:42,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:42,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:37:42,354 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:37:42,354 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1125839945] [2022-02-24 04:37:42,354 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1125839945] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:37:42,354 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:37:42,354 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-24 04:37:42,354 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725269698] [2022-02-24 04:37:42,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:37:42,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-24 04:37:42,355 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:37:42,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-24 04:37:42,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-02-24 04:37:42,356 INFO L87 Difference]: Start difference. First operand 415 states and 551 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (12), 8 states have call predecessors, (12), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-02-24 04:37:44,475 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:37:46,264 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:37:47,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:37:47,048 INFO L93 Difference]: Finished difference Result 433 states and 574 transitions. [2022-02-24 04:37:47,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-24 04:37:47,049 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (12), 8 states have call predecessors, (12), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 62 [2022-02-24 04:37:47,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:37:47,051 INFO L225 Difference]: With dead ends: 433 [2022-02-24 04:37:47,051 INFO L226 Difference]: Without dead ends: 429 [2022-02-24 04:37:47,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-02-24 04:37:47,052 INFO L933 BasicCegarLoop]: 298 mSDtfsCounter, 725 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 257 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s 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, 4.5s IncrementalHoareTripleChecker+Time [2022-02-24 04:37:47,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [729 Valid, 475 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 675 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2022-02-24 04:37:47,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2022-02-24 04:37:47,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 414. [2022-02-24 04:37:47,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 330 states have (on average 1.3636363636363635) internal successors, (450), 331 states have internal predecessors, (450), 43 states have call successors, (43), 33 states have call predecessors, (43), 40 states have return successors, (55), 50 states have call predecessors, (55), 37 states have call successors, (55) [2022-02-24 04:37:47,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 548 transitions. [2022-02-24 04:37:47,098 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 548 transitions. Word has length 62 [2022-02-24 04:37:47,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:37:47,098 INFO L470 AbstractCegarLoop]: Abstraction has 414 states and 548 transitions. [2022-02-24 04:37:47,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (12), 8 states have call predecessors, (12), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-02-24 04:37:47,099 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 548 transitions. [2022-02-24 04:37:47,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-02-24 04:37:47,122 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:37:47,122 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:37:47,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-24 04:37:47,122 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:37:47,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:37:47,123 INFO L85 PathProgramCache]: Analyzing trace with hash 466089939, now seen corresponding path program 1 times [2022-02-24 04:37:47,123 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:37:47,123 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [303068936] [2022-02-24 04:37:47,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:37:47,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:37:47,130 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:37:47,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:47,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:37:47,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:47,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:37:47,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:47,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:37:47,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:47,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:37:47,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:47,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:37:47,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:47,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:37:47,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:47,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-24 04:37:47,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:47,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-02-24 04:37:47,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:47,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:37:47,432 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:37:47,432 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [303068936] [2022-02-24 04:37:47,432 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [303068936] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:37:47,432 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:37:47,433 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-24 04:37:47,433 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776331487] [2022-02-24 04:37:47,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:37:47,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-24 04:37:47,433 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:37:47,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-24 04:37:47,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-02-24 04:37:47,434 INFO L87 Difference]: Start difference. First operand 414 states and 548 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-02-24 04:37:49,578 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:37:52,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:37:52,904 INFO L93 Difference]: Finished difference Result 448 states and 589 transitions. [2022-02-24 04:37:52,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-24 04:37:52,905 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 61 [2022-02-24 04:37:52,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:37:52,907 INFO L225 Difference]: With dead ends: 448 [2022-02-24 04:37:52,907 INFO L226 Difference]: Without dead ends: 440 [2022-02-24 04:37:52,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2022-02-24 04:37:52,908 INFO L933 BasicCegarLoop]: 334 mSDtfsCounter, 1683 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 887 mSolverCounterSat, 559 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s 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, 4.8s IncrementalHoareTripleChecker+Time [2022-02-24 04:37:52,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1692 Valid, 606 Invalid, 1447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [559 Valid, 887 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2022-02-24 04:37:52,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2022-02-24 04:37:52,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 415. [2022-02-24 04:37:52,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 331 states have (on average 1.3625377643504533) internal successors, (451), 332 states have internal predecessors, (451), 43 states have call successors, (43), 33 states have call predecessors, (43), 40 states have return successors, (55), 50 states have call predecessors, (55), 37 states have call successors, (55) [2022-02-24 04:37:52,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 549 transitions. [2022-02-24 04:37:52,958 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 549 transitions. Word has length 61 [2022-02-24 04:37:52,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:37:52,958 INFO L470 AbstractCegarLoop]: Abstraction has 415 states and 549 transitions. [2022-02-24 04:37:52,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-02-24 04:37:52,958 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 549 transitions. [2022-02-24 04:37:52,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-02-24 04:37:52,959 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:37:52,959 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] [2022-02-24 04:37:52,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-24 04:37:52,959 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:37:52,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:37:52,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1325055407, now seen corresponding path program 1 times [2022-02-24 04:37:52,959 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:37:52,960 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [996025362] [2022-02-24 04:37:52,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:37:52,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:37:52,967 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:37:53,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:53,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:37:53,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:53,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:37:53,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:53,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:37:53,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:53,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:37:53,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:53,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:37:53,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:53,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:37:53,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:53,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-24 04:37:53,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:53,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-02-24 04:37:53,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:53,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:37:53,256 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:37:53,256 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [996025362] [2022-02-24 04:37:53,256 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [996025362] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:37:53,257 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:37:53,257 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-24 04:37:53,257 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757864681] [2022-02-24 04:37:53,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:37:53,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-24 04:37:53,257 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:37:53,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-24 04:37:53,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-02-24 04:37:53,258 INFO L87 Difference]: Start difference. First operand 415 states and 549 transitions. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 5 states have internal predecessors, (44), 4 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-02-24 04:37:55,380 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:37:57,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:37:57,553 INFO L93 Difference]: Finished difference Result 442 states and 581 transitions. [2022-02-24 04:37:57,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-24 04:37:57,554 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 5 states have internal predecessors, (44), 4 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 62 [2022-02-24 04:37:57,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:37:57,555 INFO L225 Difference]: With dead ends: 442 [2022-02-24 04:37:57,555 INFO L226 Difference]: Without dead ends: 389 [2022-02-24 04:37:57,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2022-02-24 04:37:57,556 INFO L933 BasicCegarLoop]: 337 mSDtfsCounter, 1384 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 877 mSolverCounterSat, 450 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1392 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 1328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 877 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-02-24 04:37:57,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1392 Valid, 611 Invalid, 1328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 877 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2022-02-24 04:37:57,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2022-02-24 04:37:57,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 371. [2022-02-24 04:37:57,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 296 states have (on average 1.3817567567567568) internal successors, (409), 302 states have internal predecessors, (409), 42 states have call successors, (42), 32 states have call predecessors, (42), 32 states have return successors, (42), 37 states have call predecessors, (42), 36 states have call successors, (42) [2022-02-24 04:37:57,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 493 transitions. [2022-02-24 04:37:57,600 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 493 transitions. Word has length 62 [2022-02-24 04:37:57,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:37:57,600 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 493 transitions. [2022-02-24 04:37:57,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 5 states have internal predecessors, (44), 4 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-02-24 04:37:57,600 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 493 transitions. [2022-02-24 04:37:57,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-02-24 04:37:57,601 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:37:57,601 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:37:57,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-24 04:37:57,601 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:37:57,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:37:57,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1052170321, now seen corresponding path program 1 times [2022-02-24 04:37:57,602 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:37:57,602 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1626606277] [2022-02-24 04:37:57,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:37:57,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:37:57,609 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:37:57,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:57,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:37:57,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:57,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:37:57,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:57,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:37:57,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:57,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:37:57,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:57,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:37:57,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:57,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:37:57,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:57,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-24 04:37:57,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:57,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-24 04:37:57,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:57,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-24 04:37:57,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:57,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:37:57,979 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:37:57,979 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1626606277] [2022-02-24 04:37:57,979 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1626606277] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:37:57,979 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:37:57,979 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-24 04:37:57,979 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796149054] [2022-02-24 04:37:57,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:37:57,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-24 04:37:57,980 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:37:57,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-24 04:37:57,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-02-24 04:37:57,980 INFO L87 Difference]: Start difference. First operand 371 states and 493 transitions. Second operand has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-02-24 04:38:00,120 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:38:02,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:38:02,564 INFO L93 Difference]: Finished difference Result 417 states and 550 transitions. [2022-02-24 04:38:02,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-24 04:38:02,564 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 72 [2022-02-24 04:38:02,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:38:02,566 INFO L225 Difference]: With dead ends: 417 [2022-02-24 04:38:02,566 INFO L226 Difference]: Without dead ends: 409 [2022-02-24 04:38:02,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=190, Invalid=566, Unknown=0, NotChecked=0, Total=756 [2022-02-24 04:38:02,566 INFO L933 BasicCegarLoop]: 278 mSDtfsCounter, 884 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 1342 mSolverCounterSat, 274 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 896 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 1617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1342 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-02-24 04:38:02,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [896 Valid, 572 Invalid, 1617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1342 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2022-02-24 04:38:02,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2022-02-24 04:38:02,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 386. [2022-02-24 04:38:02,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 309 states have (on average 1.3754045307443366) internal successors, (425), 314 states have internal predecessors, (425), 42 states have call successors, (42), 32 states have call predecessors, (42), 34 states have return successors, (44), 39 states have call predecessors, (44), 36 states have call successors, (44) [2022-02-24 04:38:02,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 511 transitions. [2022-02-24 04:38:02,615 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 511 transitions. Word has length 72 [2022-02-24 04:38:02,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:38:02,616 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 511 transitions. [2022-02-24 04:38:02,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-02-24 04:38:02,616 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 511 transitions. [2022-02-24 04:38:02,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-02-24 04:38:02,616 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:38:02,617 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:38:02,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-02-24 04:38:02,617 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:38:02,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:38:02,617 INFO L85 PathProgramCache]: Analyzing trace with hash 2144673722, now seen corresponding path program 1 times [2022-02-24 04:38:02,617 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:38:02,617 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1733771812] [2022-02-24 04:38:02,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:38:02,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:38:02,625 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:38:02,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:02,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:38:02,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:02,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:38:02,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:02,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:38:02,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:02,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:38:02,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:02,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:38:02,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:02,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:38:02,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:02,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-24 04:38:02,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:02,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-24 04:38:02,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:02,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-24 04:38:02,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:02,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:38:02,990 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:38:02,990 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1733771812] [2022-02-24 04:38:02,990 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1733771812] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:38:02,990 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:38:02,990 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-24 04:38:02,990 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029948569] [2022-02-24 04:38:02,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:38:02,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-24 04:38:02,990 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:38:02,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-24 04:38:02,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-02-24 04:38:02,991 INFO L87 Difference]: Start difference. First operand 386 states and 511 transitions. Second operand has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 7 states have internal predecessors, (53), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-02-24 04:38:05,125 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:38:08,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:38:08,897 INFO L93 Difference]: Finished difference Result 417 states and 549 transitions. [2022-02-24 04:38:08,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-24 04:38:08,897 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 7 states have internal predecessors, (53), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 73 [2022-02-24 04:38:08,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:38:08,899 INFO L225 Difference]: With dead ends: 417 [2022-02-24 04:38:08,899 INFO L226 Difference]: Without dead ends: 409 [2022-02-24 04:38:08,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=190, Invalid=566, Unknown=0, NotChecked=0, Total=756 [2022-02-24 04:38:08,900 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 1057 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 1621 mSolverCounterSat, 343 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1069 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 1965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 343 IncrementalHoareTripleChecker+Valid, 1621 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-02-24 04:38:08,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1069 Valid, 665 Invalid, 1965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [343 Valid, 1621 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2022-02-24 04:38:08,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2022-02-24 04:38:08,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 387. [2022-02-24 04:38:08,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 310 states have (on average 1.3741935483870968) internal successors, (426), 315 states have internal predecessors, (426), 42 states have call successors, (42), 32 states have call predecessors, (42), 34 states have return successors, (44), 39 states have call predecessors, (44), 36 states have call successors, (44) [2022-02-24 04:38:08,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 512 transitions. [2022-02-24 04:38:08,984 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 512 transitions. Word has length 73 [2022-02-24 04:38:08,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:38:08,984 INFO L470 AbstractCegarLoop]: Abstraction has 387 states and 512 transitions. [2022-02-24 04:38:08,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 7 states have internal predecessors, (53), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-02-24 04:38:08,984 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 512 transitions. [2022-02-24 04:38:08,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-24 04:38:08,993 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:38:08,993 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:38:08,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-02-24 04:38:08,993 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:38:08,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:38:08,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1821545128, now seen corresponding path program 1 times [2022-02-24 04:38:08,993 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:38:08,993 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1657731299] [2022-02-24 04:38:08,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:38:08,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:38:09,001 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:38:09,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:09,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:38:09,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:09,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:38:09,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:09,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:38:09,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:09,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:38:09,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:09,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:38:09,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:09,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:38:09,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:09,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-24 04:38:09,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:09,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-24 04:38:09,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:09,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-24 04:38:09,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:09,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:38:09,248 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:38:09,248 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1657731299] [2022-02-24 04:38:09,249 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1657731299] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:38:09,249 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:38:09,249 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-24 04:38:09,249 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010527860] [2022-02-24 04:38:09,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:38:09,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-24 04:38:09,249 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:38:09,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-24 04:38:09,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-02-24 04:38:09,249 INFO L87 Difference]: Start difference. First operand 387 states and 512 transitions. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (11), 9 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-02-24 04:38:11,372 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:38:13,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:38:13,124 INFO L93 Difference]: Finished difference Result 419 states and 554 transitions. [2022-02-24 04:38:13,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-24 04:38:13,125 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (11), 9 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 74 [2022-02-24 04:38:13,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:38:13,132 INFO L225 Difference]: With dead ends: 419 [2022-02-24 04:38:13,132 INFO L226 Difference]: Without dead ends: 396 [2022-02-24 04:38:13,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2022-02-24 04:38:13,133 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 979 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 311 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 989 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-02-24 04:38:13,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [989 Valid, 457 Invalid, 928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 616 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2022-02-24 04:38:13,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2022-02-24 04:38:13,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 381. [2022-02-24 04:38:13,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 305 states have (on average 1.3639344262295081) internal successors, (416), 309 states have internal predecessors, (416), 41 states have call successors, (41), 32 states have call predecessors, (41), 34 states have return successors, (44), 39 states have call predecessors, (44), 36 states have call successors, (44) [2022-02-24 04:38:13,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 501 transitions. [2022-02-24 04:38:13,225 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 501 transitions. Word has length 74 [2022-02-24 04:38:13,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:38:13,225 INFO L470 AbstractCegarLoop]: Abstraction has 381 states and 501 transitions. [2022-02-24 04:38:13,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (11), 9 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-02-24 04:38:13,226 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 501 transitions. [2022-02-24 04:38:13,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-24 04:38:13,227 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:38:13,227 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:38:13,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-02-24 04:38:13,227 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:38:13,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:38:13,228 INFO L85 PathProgramCache]: Analyzing trace with hash 937494245, now seen corresponding path program 1 times [2022-02-24 04:38:13,228 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:38:13,228 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1786937129] [2022-02-24 04:38:13,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:38:13,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:38:13,251 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:38:13,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:13,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:38:13,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:13,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:38:13,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:13,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:38:13,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:13,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:38:13,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:13,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:38:13,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:13,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:38:13,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:13,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-24 04:38:13,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:13,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-02-24 04:38:13,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:13,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-02-24 04:38:13,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:13,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:38:13,490 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:38:13,490 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1786937129] [2022-02-24 04:38:13,490 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1786937129] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:38:13,490 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:38:13,490 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-24 04:38:13,490 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134074698] [2022-02-24 04:38:13,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:38:13,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-24 04:38:13,490 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:38:13,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-24 04:38:13,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-02-24 04:38:13,491 INFO L87 Difference]: Start difference. First operand 381 states and 501 transitions. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (13), 8 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-02-24 04:38:15,614 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:38:17,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:38:17,963 INFO L93 Difference]: Finished difference Result 437 states and 561 transitions. [2022-02-24 04:38:17,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-24 04:38:17,963 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (13), 8 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 77 [2022-02-24 04:38:17,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:38:17,964 INFO L225 Difference]: With dead ends: 437 [2022-02-24 04:38:17,964 INFO L226 Difference]: Without dead ends: 374 [2022-02-24 04:38:17,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2022-02-24 04:38:17,965 INFO L933 BasicCegarLoop]: 310 mSDtfsCounter, 869 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 961 mSolverCounterSat, 272 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 879 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 1234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 961 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-02-24 04:38:17,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [879 Valid, 628 Invalid, 1234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 961 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2022-02-24 04:38:17,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-02-24 04:38:18,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 345. [2022-02-24 04:38:18,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 274 states have (on average 1.3503649635036497) internal successors, (370), 278 states have internal predecessors, (370), 38 states have call successors, (38), 30 states have call predecessors, (38), 32 states have return successors, (39), 36 states have call predecessors, (39), 33 states have call successors, (39) [2022-02-24 04:38:18,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 447 transitions. [2022-02-24 04:38:18,014 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 447 transitions. Word has length 77 [2022-02-24 04:38:18,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:38:18,014 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 447 transitions. [2022-02-24 04:38:18,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (13), 8 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-02-24 04:38:18,015 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 447 transitions. [2022-02-24 04:38:18,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-24 04:38:18,015 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:38:18,015 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:38:18,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-02-24 04:38:18,016 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:38:18,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:38:18,016 INFO L85 PathProgramCache]: Analyzing trace with hash 641442499, now seen corresponding path program 1 times [2022-02-24 04:38:18,016 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:38:18,016 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [177952865] [2022-02-24 04:38:18,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:38:18,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:38:18,024 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:38:18,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:18,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:38:18,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:18,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:38:18,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:18,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:38:18,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:18,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:38:18,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:18,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:38:18,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:18,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:38:18,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:18,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-24 04:38:18,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:18,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-24 04:38:18,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:18,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-24 04:38:18,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:18,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:38:18,331 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:38:18,331 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [177952865] [2022-02-24 04:38:18,331 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [177952865] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:38:18,331 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:38:18,331 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-24 04:38:18,331 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896738705] [2022-02-24 04:38:18,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:38:18,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-24 04:38:18,332 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:38:18,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-24 04:38:18,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-02-24 04:38:18,332 INFO L87 Difference]: Start difference. First operand 345 states and 447 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-02-24 04:38:20,423 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:38:25,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:38:25,160 INFO L93 Difference]: Finished difference Result 417 states and 534 transitions. [2022-02-24 04:38:25,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-24 04:38:25,160 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 75 [2022-02-24 04:38:25,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:38:25,161 INFO L225 Difference]: With dead ends: 417 [2022-02-24 04:38:25,162 INFO L226 Difference]: Without dead ends: 359 [2022-02-24 04:38:25,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2022-02-24 04:38:25,162 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 867 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 1784 mSolverCounterSat, 305 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 2090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 1784 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-02-24 04:38:25,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [870 Valid, 791 Invalid, 2090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 1784 Invalid, 1 Unknown, 0 Unchecked, 6.5s Time] [2022-02-24 04:38:25,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-02-24 04:38:25,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 344. [2022-02-24 04:38:25,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 273 states have (on average 1.336996336996337) internal successors, (365), 277 states have internal predecessors, (365), 38 states have call successors, (38), 30 states have call predecessors, (38), 32 states have return successors, (39), 36 states have call predecessors, (39), 33 states have call successors, (39) [2022-02-24 04:38:25,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 442 transitions. [2022-02-24 04:38:25,211 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 442 transitions. Word has length 75 [2022-02-24 04:38:25,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:38:25,211 INFO L470 AbstractCegarLoop]: Abstraction has 344 states and 442 transitions. [2022-02-24 04:38:25,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-02-24 04:38:25,211 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 442 transitions. [2022-02-24 04:38:25,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-02-24 04:38:25,212 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:38:25,212 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:38:25,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-02-24 04:38:25,212 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:38:25,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:38:25,212 INFO L85 PathProgramCache]: Analyzing trace with hash 476602328, now seen corresponding path program 1 times [2022-02-24 04:38:25,212 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:38:25,213 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [460944310] [2022-02-24 04:38:25,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:38:25,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:38:25,220 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:38:25,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:25,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:38:25,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:25,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:38:25,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:25,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:38:25,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:25,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:38:25,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:25,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:38:25,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:25,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:38:25,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:25,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-24 04:38:25,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:25,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-02-24 04:38:25,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:25,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-24 04:38:25,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:25,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:38:25,512 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:38:25,512 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [460944310] [2022-02-24 04:38:25,512 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [460944310] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:38:25,512 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:38:25,512 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-24 04:38:25,512 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662631689] [2022-02-24 04:38:25,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:38:25,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-24 04:38:25,512 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:38:25,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-24 04:38:25,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-02-24 04:38:25,513 INFO L87 Difference]: Start difference. First operand 344 states and 442 transitions. Second operand has 14 states, 14 states have (on average 4.0) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-02-24 04:38:27,696 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:38:34,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:38:34,203 INFO L93 Difference]: Finished difference Result 422 states and 536 transitions. [2022-02-24 04:38:34,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-24 04:38:34,203 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 76 [2022-02-24 04:38:34,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:38:34,205 INFO L225 Difference]: With dead ends: 422 [2022-02-24 04:38:34,205 INFO L226 Difference]: Without dead ends: 379 [2022-02-24 04:38:34,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=260, Invalid=930, Unknown=0, NotChecked=0, Total=1190 [2022-02-24 04:38:34,206 INFO L933 BasicCegarLoop]: 303 mSDtfsCounter, 1036 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 1690 mSolverCounterSat, 373 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1041 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 2064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 373 IncrementalHoareTripleChecker+Valid, 1690 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-02-24 04:38:34,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1041 Valid, 745 Invalid, 2064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [373 Valid, 1690 Invalid, 1 Unknown, 0 Unchecked, 8.0s Time] [2022-02-24 04:38:34,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2022-02-24 04:38:34,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 344. [2022-02-24 04:38:34,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 273 states have (on average 1.3296703296703296) internal successors, (363), 277 states have internal predecessors, (363), 38 states have call successors, (38), 30 states have call predecessors, (38), 32 states have return successors, (38), 36 states have call predecessors, (38), 33 states have call successors, (38) [2022-02-24 04:38:34,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 439 transitions. [2022-02-24 04:38:34,256 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 439 transitions. Word has length 76 [2022-02-24 04:38:34,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:38:34,256 INFO L470 AbstractCegarLoop]: Abstraction has 344 states and 439 transitions. [2022-02-24 04:38:34,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-02-24 04:38:34,256 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 439 transitions. [2022-02-24 04:38:34,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-02-24 04:38:34,261 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:38:34,261 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:38:34,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-02-24 04:38:34,261 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:38:34,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:38:34,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1346047832, now seen corresponding path program 1 times [2022-02-24 04:38:34,262 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:38:34,262 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [465235035] [2022-02-24 04:38:34,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:38:34,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:38:34,269 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:38:34,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:34,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:38:34,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:34,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:38:34,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:34,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:38:34,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:34,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:38:34,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:34,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:38:34,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:34,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:38:34,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:34,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-24 04:38:34,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:34,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-24 04:38:34,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:34,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:38:34,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:34,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:38:34,519 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:38:34,519 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [465235035] [2022-02-24 04:38:34,519 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [465235035] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:38:34,519 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:38:34,519 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-24 04:38:34,519 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836142682] [2022-02-24 04:38:34,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:38:34,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-24 04:38:34,520 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:38:34,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-24 04:38:34,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-02-24 04:38:34,520 INFO L87 Difference]: Start difference. First operand 344 states and 439 transitions. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-02-24 04:38:36,598 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:38:40,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:38:40,513 INFO L93 Difference]: Finished difference Result 378 states and 480 transitions. [2022-02-24 04:38:40,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-24 04:38:40,513 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 76 [2022-02-24 04:38:40,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:38:40,514 INFO L225 Difference]: With dead ends: 378 [2022-02-24 04:38:40,514 INFO L226 Difference]: Without dead ends: 355 [2022-02-24 04:38:40,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2022-02-24 04:38:40,515 INFO L933 BasicCegarLoop]: 272 mSDtfsCounter, 870 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 296 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 1158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 296 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-02-24 04:38:40,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [873 Valid, 546 Invalid, 1158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [296 Valid, 861 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2022-02-24 04:38:40,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2022-02-24 04:38:40,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 335. [2022-02-24 04:38:40,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 267 states have (on average 1.3333333333333333) internal successors, (356), 271 states have internal predecessors, (356), 37 states have call successors, (37), 29 states have call predecessors, (37), 30 states have return successors, (36), 34 states have call predecessors, (36), 32 states have call successors, (36) [2022-02-24 04:38:40,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 429 transitions. [2022-02-24 04:38:40,570 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 429 transitions. Word has length 76 [2022-02-24 04:38:40,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:38:40,570 INFO L470 AbstractCegarLoop]: Abstraction has 335 states and 429 transitions. [2022-02-24 04:38:40,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-02-24 04:38:40,570 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 429 transitions. [2022-02-24 04:38:40,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-02-24 04:38:40,573 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:38:40,573 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:38:40,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-02-24 04:38:40,573 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:38:40,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:38:40,573 INFO L85 PathProgramCache]: Analyzing trace with hash 2131421, now seen corresponding path program 1 times [2022-02-24 04:38:40,573 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:38:40,573 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1188014183] [2022-02-24 04:38:40,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:38:40,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:38:40,581 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:38:40,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:40,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:38:40,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:40,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:38:40,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:40,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:38:40,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:40,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:38:40,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:40,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:38:40,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:40,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:38:40,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:40,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-24 04:38:40,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:40,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-02-24 04:38:40,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:40,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-24 04:38:40,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:40,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:38:40,959 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:38:40,959 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1188014183] [2022-02-24 04:38:40,959 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1188014183] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:38:40,959 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:38:40,959 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-24 04:38:40,959 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342179276] [2022-02-24 04:38:40,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:38:40,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-24 04:38:40,960 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:38:40,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-24 04:38:40,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-02-24 04:38:40,960 INFO L87 Difference]: Start difference. First operand 335 states and 429 transitions. Second operand has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 1 states have call successors, (9) [2022-02-24 04:38:43,051 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:38:46,318 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:38:48,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:38:48,300 INFO L93 Difference]: Finished difference Result 398 states and 505 transitions. [2022-02-24 04:38:48,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-24 04:38:48,300 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 1 states have call successors, (9) Word has length 78 [2022-02-24 04:38:48,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:38:48,301 INFO L225 Difference]: With dead ends: 398 [2022-02-24 04:38:48,301 INFO L226 Difference]: Without dead ends: 354 [2022-02-24 04:38:48,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2022-02-24 04:38:48,302 INFO L933 BasicCegarLoop]: 269 mSDtfsCounter, 399 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 2518 mSolverCounterSat, 139 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 2658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 2518 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-02-24 04:38:48,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [403 Valid, 935 Invalid, 2658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 2518 Invalid, 1 Unknown, 0 Unchecked, 7.0s Time] [2022-02-24 04:38:48,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-02-24 04:38:48,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 334. [2022-02-24 04:38:48,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 266 states have (on average 1.330827067669173) internal successors, (354), 270 states have internal predecessors, (354), 37 states have call successors, (37), 29 states have call predecessors, (37), 30 states have return successors, (36), 34 states have call predecessors, (36), 32 states have call successors, (36) [2022-02-24 04:38:48,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 427 transitions. [2022-02-24 04:38:48,352 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 427 transitions. Word has length 78 [2022-02-24 04:38:48,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:38:48,352 INFO L470 AbstractCegarLoop]: Abstraction has 334 states and 427 transitions. [2022-02-24 04:38:48,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 1 states have call successors, (9) [2022-02-24 04:38:48,352 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 427 transitions. [2022-02-24 04:38:48,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-24 04:38:48,353 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:38:48,353 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:38:48,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-02-24 04:38:48,353 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:38:48,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:38:48,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1889602735, now seen corresponding path program 1 times [2022-02-24 04:38:48,354 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:38:48,354 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [683412492] [2022-02-24 04:38:48,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:38:48,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:38:48,362 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:38:48,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:48,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:38:48,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:48,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:38:48,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:48,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:38:48,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:48,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:38:48,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:48,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:38:48,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:48,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:38:48,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:48,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-24 04:38:48,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:48,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-02-24 04:38:48,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:48,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:38:48,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:48,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:38:48,731 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:38:48,731 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [683412492] [2022-02-24 04:38:48,731 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [683412492] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:38:48,731 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:38:48,732 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-24 04:38:48,732 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787199209] [2022-02-24 04:38:48,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:38:48,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-24 04:38:48,732 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:38:48,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-24 04:38:48,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-02-24 04:38:48,732 INFO L87 Difference]: Start difference. First operand 334 states and 427 transitions. Second operand has 16 states, 16 states have (on average 3.6875) internal successors, (59), 7 states have internal predecessors, (59), 2 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 1 states have call successors, (9) [2022-02-24 04:38:50,810 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:38:55,612 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:38:58,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:38:58,298 INFO L93 Difference]: Finished difference Result 475 states and 607 transitions. [2022-02-24 04:38:58,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-24 04:38:58,298 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.6875) internal successors, (59), 7 states have internal predecessors, (59), 2 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 1 states have call successors, (9) Word has length 79 [2022-02-24 04:38:58,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:38:58,301 INFO L225 Difference]: With dead ends: 475 [2022-02-24 04:38:58,301 INFO L226 Difference]: Without dead ends: 367 [2022-02-24 04:38:58,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=117, Invalid=585, Unknown=0, NotChecked=0, Total=702 [2022-02-24 04:38:58,302 INFO L933 BasicCegarLoop]: 267 mSDtfsCounter, 485 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 2602 mSolverCounterSat, 170 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 2773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 2602 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-02-24 04:38:58,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [495 Valid, 975 Invalid, 2773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 2602 Invalid, 1 Unknown, 0 Unchecked, 9.1s Time] [2022-02-24 04:38:58,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2022-02-24 04:38:58,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 338. [2022-02-24 04:38:58,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 270 states have (on average 1.3296296296296297) internal successors, (359), 275 states have internal predecessors, (359), 36 states have call successors, (36), 29 states have call predecessors, (36), 31 states have return successors, (37), 33 states have call predecessors, (37), 31 states have call successors, (37) [2022-02-24 04:38:58,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 432 transitions. [2022-02-24 04:38:58,359 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 432 transitions. Word has length 79 [2022-02-24 04:38:58,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:38:58,359 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 432 transitions. [2022-02-24 04:38:58,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.6875) internal successors, (59), 7 states have internal predecessors, (59), 2 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 1 states have call successors, (9) [2022-02-24 04:38:58,359 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 432 transitions. [2022-02-24 04:38:58,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-24 04:38:58,360 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:38:58,360 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:38:58,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-02-24 04:38:58,360 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:38:58,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:38:58,360 INFO L85 PathProgramCache]: Analyzing trace with hash -2045108737, now seen corresponding path program 1 times [2022-02-24 04:38:58,360 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:38:58,360 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [530771047] [2022-02-24 04:38:58,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:38:58,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:38:58,370 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:38:58,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:58,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:38:58,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:58,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:38:58,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:58,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:38:58,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:58,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:38:58,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:58,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:38:58,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:58,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:38:58,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:58,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-24 04:38:58,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:58,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-02-24 04:38:58,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:58,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-24 04:38:58,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:58,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:38:58,754 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:38:58,754 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [530771047] [2022-02-24 04:38:58,754 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [530771047] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:38:58,754 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:38:58,754 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-24 04:38:58,754 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629512190] [2022-02-24 04:38:58,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:38:58,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-24 04:38:58,755 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:38:58,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-24 04:38:58,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-02-24 04:38:58,755 INFO L87 Difference]: Start difference. First operand 338 states and 432 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-02-24 04:39:00,877 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:39:04,000 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:39:05,520 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:39:07,883 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:39:08,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:39:08,920 INFO L93 Difference]: Finished difference Result 429 states and 546 transitions. [2022-02-24 04:39:08,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-24 04:39:08,920 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 79 [2022-02-24 04:39:08,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:39:08,922 INFO L225 Difference]: With dead ends: 429 [2022-02-24 04:39:08,922 INFO L226 Difference]: Without dead ends: 376 [2022-02-24 04:39:08,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=210, Invalid=602, Unknown=0, NotChecked=0, Total=812 [2022-02-24 04:39:08,923 INFO L933 BasicCegarLoop]: 274 mSDtfsCounter, 1050 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 1031 mSolverCounterSat, 349 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1065 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 1383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 1031 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-02-24 04:39:08,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1065 Valid, 497 Invalid, 1383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 1031 Invalid, 3 Unknown, 0 Unchecked, 9.5s Time] [2022-02-24 04:39:08,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2022-02-24 04:39:08,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 329. [2022-02-24 04:39:08,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 262 states have (on average 1.3244274809160306) internal successors, (347), 266 states have internal predecessors, (347), 36 states have call successors, (36), 29 states have call predecessors, (36), 30 states have return successors, (35), 33 states have call predecessors, (35), 31 states have call successors, (35) [2022-02-24 04:39:08,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 418 transitions. [2022-02-24 04:39:08,979 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 418 transitions. Word has length 79 [2022-02-24 04:39:08,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:39:08,979 INFO L470 AbstractCegarLoop]: Abstraction has 329 states and 418 transitions. [2022-02-24 04:39:08,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-02-24 04:39:08,980 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 418 transitions. [2022-02-24 04:39:08,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-02-24 04:39:08,980 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:39:08,980 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:39:08,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-02-24 04:39:08,981 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:39:08,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:39:08,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1773831806, now seen corresponding path program 1 times [2022-02-24 04:39:08,981 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:39:08,981 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [61604674] [2022-02-24 04:39:08,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:39:08,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:39:08,990 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:39:09,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:09,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:39:09,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:09,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:39:09,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:09,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:39:09,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:09,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:39:09,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:09,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:39:09,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:09,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:39:09,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:09,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-24 04:39:09,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:09,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-02-24 04:39:09,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:09,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-02-24 04:39:09,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:09,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:39:09,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:09,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-02-24 04:39:09,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:09,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:39:09,277 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:39:09,277 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [61604674] [2022-02-24 04:39:09,277 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [61604674] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:39:09,277 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:39:09,277 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-24 04:39:09,277 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572720225] [2022-02-24 04:39:09,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:39:09,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-24 04:39:09,277 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:39:09,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-24 04:39:09,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-02-24 04:39:09,278 INFO L87 Difference]: Start difference. First operand 329 states and 418 transitions. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (15), 9 states have call predecessors, (15), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-02-24 04:39:11,441 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:39:13,765 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:39:17,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:39:17,266 INFO L93 Difference]: Finished difference Result 416 states and 527 transitions. [2022-02-24 04:39:17,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-24 04:39:17,266 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (15), 9 states have call predecessors, (15), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 84 [2022-02-24 04:39:17,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:39:17,267 INFO L225 Difference]: With dead ends: 416 [2022-02-24 04:39:17,267 INFO L226 Difference]: Without dead ends: 357 [2022-02-24 04:39:17,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2022-02-24 04:39:17,270 INFO L933 BasicCegarLoop]: 266 mSDtfsCounter, 556 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 895 mSolverCounterSat, 194 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 895 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-02-24 04:39:17,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [559 Valid, 566 Invalid, 1090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 895 Invalid, 1 Unknown, 0 Unchecked, 7.6s Time] [2022-02-24 04:39:17,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2022-02-24 04:39:17,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 327. [2022-02-24 04:39:17,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 261 states have (on average 1.314176245210728) internal successors, (343), 264 states have internal predecessors, (343), 35 states have call successors, (35), 29 states have call predecessors, (35), 30 states have return successors, (35), 33 states have call predecessors, (35), 31 states have call successors, (35) [2022-02-24 04:39:17,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 413 transitions. [2022-02-24 04:39:17,326 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 413 transitions. Word has length 84 [2022-02-24 04:39:17,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:39:17,328 INFO L470 AbstractCegarLoop]: Abstraction has 327 states and 413 transitions. [2022-02-24 04:39:17,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (15), 9 states have call predecessors, (15), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-02-24 04:39:17,328 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 413 transitions. [2022-02-24 04:39:17,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-02-24 04:39:17,329 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:39:17,329 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:39:17,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-02-24 04:39:17,329 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:39:17,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:39:17,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1690581556, now seen corresponding path program 1 times [2022-02-24 04:39:17,329 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:39:17,330 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [479914875] [2022-02-24 04:39:17,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:39:17,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:39:17,339 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:39:17,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:17,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:39:17,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:17,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:39:17,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:17,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:39:17,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:17,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:39:17,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:17,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:39:17,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:17,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:39:17,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:17,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-24 04:39:17,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:17,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-02-24 04:39:17,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:17,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-24 04:39:17,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:17,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:39:17,682 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:39:17,682 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [479914875] [2022-02-24 04:39:17,682 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [479914875] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:39:17,682 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:39:17,682 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-24 04:39:17,682 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260877406] [2022-02-24 04:39:17,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:39:17,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-24 04:39:17,683 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:39:17,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-24 04:39:17,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-02-24 04:39:17,684 INFO L87 Difference]: Start difference. First operand 327 states and 413 transitions. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-02-24 04:39:19,755 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:39:22,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:39:22,073 INFO L93 Difference]: Finished difference Result 371 states and 465 transitions. [2022-02-24 04:39:22,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-24 04:39:22,074 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 80 [2022-02-24 04:39:22,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:39:22,075 INFO L225 Difference]: With dead ends: 371 [2022-02-24 04:39:22,075 INFO L226 Difference]: Without dead ends: 346 [2022-02-24 04:39:22,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2022-02-24 04:39:22,076 INFO L933 BasicCegarLoop]: 259 mSDtfsCounter, 855 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 265 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-02-24 04:39:22,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [865 Valid, 559 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 915 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2022-02-24 04:39:22,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2022-02-24 04:39:22,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 326. [2022-02-24 04:39:22,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 260 states have (on average 1.3115384615384615) internal successors, (341), 263 states have internal predecessors, (341), 35 states have call successors, (35), 29 states have call predecessors, (35), 30 states have return successors, (35), 33 states have call predecessors, (35), 31 states have call successors, (35) [2022-02-24 04:39:22,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 411 transitions. [2022-02-24 04:39:22,140 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 411 transitions. Word has length 80 [2022-02-24 04:39:22,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:39:22,140 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 411 transitions. [2022-02-24 04:39:22,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-02-24 04:39:22,140 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 411 transitions. [2022-02-24 04:39:22,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-02-24 04:39:22,141 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:39:22,141 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:39:22,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-02-24 04:39:22,141 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:39:22,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:39:22,141 INFO L85 PathProgramCache]: Analyzing trace with hash 664933900, now seen corresponding path program 1 times [2022-02-24 04:39:22,142 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:39:22,142 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1260373554] [2022-02-24 04:39:22,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:39:22,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:39:22,151 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:39:22,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:22,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:39:22,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:22,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:39:22,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:22,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:39:22,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:22,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:39:22,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:22,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:39:22,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:22,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:39:22,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:22,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-24 04:39:22,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:22,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-02-24 04:39:22,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:22,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-24 04:39:22,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:22,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:39:22,475 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:39:22,475 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1260373554] [2022-02-24 04:39:22,475 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1260373554] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:39:22,475 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:39:22,475 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-24 04:39:22,475 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897522888] [2022-02-24 04:39:22,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:39:22,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-24 04:39:22,476 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:39:22,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-24 04:39:22,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-02-24 04:39:22,476 INFO L87 Difference]: Start difference. First operand 326 states and 411 transitions. Second operand has 15 states, 15 states have (on average 4.0) internal successors, (60), 8 states have internal predecessors, (60), 4 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-02-24 04:39:24,689 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:39:27,667 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 [] [2022-02-24 04:39:28,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:39:28,855 INFO L93 Difference]: Finished difference Result 353 states and 444 transitions. [2022-02-24 04:39:28,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-24 04:39:28,855 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.0) internal successors, (60), 8 states have internal predecessors, (60), 4 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 80 [2022-02-24 04:39:28,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:39:28,856 INFO L225 Difference]: With dead ends: 353 [2022-02-24 04:39:28,856 INFO L226 Difference]: Without dead ends: 205 [2022-02-24 04:39:28,857 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=198, Invalid=672, Unknown=0, NotChecked=0, Total=870 [2022-02-24 04:39:28,857 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 1063 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 1449 mSolverCounterSat, 345 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1069 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 1795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 345 IncrementalHoareTripleChecker+Valid, 1449 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-02-24 04:39:28,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1069 Valid, 521 Invalid, 1795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [345 Valid, 1449 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2022-02-24 04:39:28,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-02-24 04:39:28,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 186. [2022-02-24 04:39:28,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 141 states have (on average 1.2411347517730495) internal successors, (175), 144 states have internal predecessors, (175), 23 states have call successors, (23), 21 states have call predecessors, (23), 21 states have return successors, (22), 20 states have call predecessors, (22), 19 states have call successors, (22) [2022-02-24 04:39:28,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 220 transitions. [2022-02-24 04:39:28,898 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 220 transitions. Word has length 80 [2022-02-24 04:39:28,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:39:28,898 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 220 transitions. [2022-02-24 04:39:28,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.0) internal successors, (60), 8 states have internal predecessors, (60), 4 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-02-24 04:39:28,899 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 220 transitions. [2022-02-24 04:39:28,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-02-24 04:39:28,899 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:39:28,899 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:39:28,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-02-24 04:39:28,899 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:39:28,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:39:28,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1299022194, now seen corresponding path program 1 times [2022-02-24 04:39:28,900 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:39:28,900 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1370616447] [2022-02-24 04:39:28,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:39:28,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:39:28,909 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:39:28,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:29,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:39:29,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:29,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:39:29,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:29,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:39:29,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:29,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:39:29,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:29,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:39:29,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:29,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:39:29,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:29,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-24 04:39:29,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:29,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-02-24 04:39:29,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:29,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-02-24 04:39:29,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:29,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 04:39:29,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:29,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:39:29,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:29,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:39:29,235 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:39:29,235 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1370616447] [2022-02-24 04:39:29,235 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1370616447] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:39:29,235 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:39:29,235 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-24 04:39:29,236 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271656085] [2022-02-24 04:39:29,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:39:29,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-24 04:39:29,237 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:39:29,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-24 04:39:29,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-02-24 04:39:29,237 INFO L87 Difference]: Start difference. First operand 186 states and 220 transitions. Second operand has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (15), 9 states have call predecessors, (15), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-02-24 04:39:31,308 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:39:33,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:39:33,684 INFO L93 Difference]: Finished difference Result 300 states and 368 transitions. [2022-02-24 04:39:33,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-24 04:39:33,684 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (15), 9 states have call predecessors, (15), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 88 [2022-02-24 04:39:33,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:39:33,685 INFO L225 Difference]: With dead ends: 300 [2022-02-24 04:39:33,685 INFO L226 Difference]: Without dead ends: 237 [2022-02-24 04:39:33,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2022-02-24 04:39:33,686 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 309 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 160 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-02-24 04:39:33,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 392 Invalid, 992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 831 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2022-02-24 04:39:33,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-02-24 04:39:33,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 199. [2022-02-24 04:39:33,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 152 states have (on average 1.2236842105263157) internal successors, (186), 155 states have internal predecessors, (186), 23 states have call successors, (23), 21 states have call predecessors, (23), 23 states have return successors, (24), 22 states have call predecessors, (24), 19 states have call successors, (24) [2022-02-24 04:39:33,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 233 transitions. [2022-02-24 04:39:33,732 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 233 transitions. Word has length 88 [2022-02-24 04:39:33,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:39:33,732 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 233 transitions. [2022-02-24 04:39:33,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (15), 9 states have call predecessors, (15), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-02-24 04:39:33,732 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 233 transitions. [2022-02-24 04:39:33,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-02-24 04:39:33,733 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:39:33,733 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:39:33,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-02-24 04:39:33,733 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:39:33,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:39:33,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1324935307, now seen corresponding path program 1 times [2022-02-24 04:39:33,734 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:39:33,734 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [177383736] [2022-02-24 04:39:33,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:39:33,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:39:33,743 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:39:33,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:33,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:39:33,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:33,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:39:33,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:33,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:39:33,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:33,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:39:33,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:33,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:39:33,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:33,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:39:33,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:33,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-24 04:39:33,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:33,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-02-24 04:39:33,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:33,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-02-24 04:39:33,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:34,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 04:39:34,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:34,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:39:34,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:34,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:39:34,018 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:39:34,018 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [177383736] [2022-02-24 04:39:34,018 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [177383736] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:39:34,018 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:39:34,018 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-24 04:39:34,018 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986912587] [2022-02-24 04:39:34,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:39:34,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-24 04:39:34,018 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:39:34,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-24 04:39:34,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-02-24 04:39:34,019 INFO L87 Difference]: Start difference. First operand 199 states and 233 transitions. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (15), 10 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-02-24 04:39:36,081 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:39:37,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:39:37,693 INFO L93 Difference]: Finished difference Result 437 states and 522 transitions. [2022-02-24 04:39:37,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-24 04:39:37,694 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (15), 10 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 89 [2022-02-24 04:39:37,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:39:37,695 INFO L225 Difference]: With dead ends: 437 [2022-02-24 04:39:37,695 INFO L226 Difference]: Without dead ends: 408 [2022-02-24 04:39:37,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=109, Invalid=233, Unknown=0, NotChecked=0, Total=342 [2022-02-24 04:39:37,696 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 607 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 284 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 284 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-02-24 04:39:37,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [613 Valid, 269 Invalid, 686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [284 Valid, 401 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2022-02-24 04:39:37,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2022-02-24 04:39:37,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 345. [2022-02-24 04:39:37,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 268 states have (on average 1.2350746268656716) internal successors, (331), 272 states have internal predecessors, (331), 36 states have call successors, (36), 34 states have call predecessors, (36), 40 states have return successors, (42), 38 states have call predecessors, (42), 32 states have call successors, (42) [2022-02-24 04:39:37,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 409 transitions. [2022-02-24 04:39:37,777 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 409 transitions. Word has length 89 [2022-02-24 04:39:37,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:39:37,777 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 409 transitions. [2022-02-24 04:39:37,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (15), 10 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-02-24 04:39:37,777 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 409 transitions. [2022-02-24 04:39:37,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-02-24 04:39:37,778 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:39:37,778 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:39:37,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-02-24 04:39:37,778 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:39:37,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:39:37,778 INFO L85 PathProgramCache]: Analyzing trace with hash 450072055, now seen corresponding path program 1 times [2022-02-24 04:39:37,779 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:39:37,779 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972300057] [2022-02-24 04:39:37,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:39:37,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:39:37,788 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:39:37,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:37,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:39:37,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:37,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:39:37,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:37,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:39:37,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:37,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:39:37,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:37,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:39:37,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:38,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:39:38,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:38,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-24 04:39:38,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:38,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-02-24 04:39:38,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:38,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-02-24 04:39:38,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:38,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 04:39:38,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:38,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:39:38,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:38,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:39:38,073 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:39:38,073 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972300057] [2022-02-24 04:39:38,073 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [972300057] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:39:38,073 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:39:38,073 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-24 04:39:38,073 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836378344] [2022-02-24 04:39:38,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:39:38,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-24 04:39:38,074 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:39:38,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-24 04:39:38,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-02-24 04:39:38,074 INFO L87 Difference]: Start difference. First operand 345 states and 409 transitions. Second operand has 12 states, 12 states have (on average 5.25) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (15), 9 states have call predecessors, (15), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-02-24 04:39:40,149 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:39:41,982 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:39:44,007 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:39:46,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:39:46,541 INFO L93 Difference]: Finished difference Result 657 states and 796 transitions. [2022-02-24 04:39:46,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-24 04:39:46,542 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (15), 9 states have call predecessors, (15), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 89 [2022-02-24 04:39:46,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:39:46,543 INFO L225 Difference]: With dead ends: 657 [2022-02-24 04:39:46,543 INFO L226 Difference]: Without dead ends: 399 [2022-02-24 04:39:46,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-02-24 04:39:46,545 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 221 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 111 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-02-24 04:39:46,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 363 Invalid, 907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 794 Invalid, 2 Unknown, 0 Unchecked, 8.1s Time] [2022-02-24 04:39:46,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2022-02-24 04:39:46,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 337. [2022-02-24 04:39:46,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 262 states have (on average 1.2328244274809161) internal successors, (323), 266 states have internal predecessors, (323), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-02-24 04:39:46,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 399 transitions. [2022-02-24 04:39:46,652 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 399 transitions. Word has length 89 [2022-02-24 04:39:46,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:39:46,652 INFO L470 AbstractCegarLoop]: Abstraction has 337 states and 399 transitions. [2022-02-24 04:39:46,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (15), 9 states have call predecessors, (15), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-02-24 04:39:46,653 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 399 transitions. [2022-02-24 04:39:46,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-02-24 04:39:46,653 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:39:46,654 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:39:46,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-02-24 04:39:46,654 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:39:46,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:39:46,654 INFO L85 PathProgramCache]: Analyzing trace with hash -623916271, now seen corresponding path program 1 times [2022-02-24 04:39:46,654 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:39:46,654 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [953893064] [2022-02-24 04:39:46,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:39:46,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:39:46,665 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:39:46,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:47,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:39:47,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:47,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:39:47,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:47,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:39:47,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:47,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:39:47,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:47,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:39:47,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:47,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:39:47,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:47,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 04:39:47,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:47,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-24 04:39:47,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:47,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-02-24 04:39:47,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:47,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-02-24 04:39:47,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:47,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-02-24 04:39:47,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:47,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 04:39:47,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:47,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:39:47,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:47,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:39:47,276 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:39:47,276 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [953893064] [2022-02-24 04:39:47,276 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [953893064] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:39:47,276 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:39:47,276 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-24 04:39:47,276 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953549343] [2022-02-24 04:39:47,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:39:47,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-24 04:39:47,276 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:39:47,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-24 04:39:47,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-02-24 04:39:47,278 INFO L87 Difference]: Start difference. First operand 337 states and 399 transitions. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:39:49,347 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:39:52,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:39:52,254 INFO L93 Difference]: Finished difference Result 675 states and 810 transitions. [2022-02-24 04:39:52,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-24 04:39:52,254 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 102 [2022-02-24 04:39:52,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:39:52,256 INFO L225 Difference]: With dead ends: 675 [2022-02-24 04:39:52,256 INFO L226 Difference]: Without dead ends: 389 [2022-02-24 04:39:52,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2022-02-24 04:39:52,257 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 202 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 108 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-02-24 04:39:52,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 372 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 554 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2022-02-24 04:39:52,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2022-02-24 04:39:52,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 339. [2022-02-24 04:39:52,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 264 states have (on average 1.231060606060606) internal successors, (325), 268 states have internal predecessors, (325), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-02-24 04:39:52,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 401 transitions. [2022-02-24 04:39:52,453 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 401 transitions. Word has length 102 [2022-02-24 04:39:52,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:39:52,455 INFO L470 AbstractCegarLoop]: Abstraction has 339 states and 401 transitions. [2022-02-24 04:39:52,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:39:52,456 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 401 transitions. [2022-02-24 04:39:52,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-02-24 04:39:52,457 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:39:52,457 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:39:52,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-02-24 04:39:52,457 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:39:52,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:39:52,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1023672093, now seen corresponding path program 1 times [2022-02-24 04:39:52,457 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:39:52,457 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1008457640] [2022-02-24 04:39:52,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:39:52,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:39:52,510 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:39:52,511 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:39:52,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:52,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:39:52,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:52,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:39:52,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:52,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:39:52,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:52,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:39:52,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:52,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:39:52,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:52,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:39:52,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:52,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 04:39:53,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:53,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 04:39:53,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:53,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-02-24 04:39:53,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:53,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-24 04:39:53,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:53,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-02-24 04:39:53,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:53,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 04:39:53,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:53,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:39:53,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:53,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:39:53,165 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:39:53,165 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1008457640] [2022-02-24 04:39:53,165 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1008457640] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:39:53,165 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:39:53,165 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-24 04:39:53,165 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38791225] [2022-02-24 04:39:53,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:39:53,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-24 04:39:53,168 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:39:53,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-24 04:39:53,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-02-24 04:39:53,169 INFO L87 Difference]: Start difference. First operand 339 states and 401 transitions. Second operand has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:39:55,232 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:39:58,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:39:58,205 INFO L93 Difference]: Finished difference Result 677 states and 812 transitions. [2022-02-24 04:39:58,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-24 04:39:58,205 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 103 [2022-02-24 04:39:58,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:39:58,207 INFO L225 Difference]: With dead ends: 677 [2022-02-24 04:39:58,207 INFO L226 Difference]: Without dead ends: 391 [2022-02-24 04:39:58,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2022-02-24 04:39:58,208 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 271 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 138 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-02-24 04:39:58,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 360 Invalid, 741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 602 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2022-02-24 04:39:58,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2022-02-24 04:39:58,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 341. [2022-02-24 04:39:58,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 266 states have (on average 1.2293233082706767) internal successors, (327), 270 states have internal predecessors, (327), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-02-24 04:39:58,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 403 transitions. [2022-02-24 04:39:58,310 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 403 transitions. Word has length 103 [2022-02-24 04:39:58,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:39:58,311 INFO L470 AbstractCegarLoop]: Abstraction has 341 states and 403 transitions. [2022-02-24 04:39:58,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:39:58,311 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 403 transitions. [2022-02-24 04:39:58,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-02-24 04:39:58,311 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:39:58,312 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:39:58,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-02-24 04:39:58,313 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:39:58,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:39:58,313 INFO L85 PathProgramCache]: Analyzing trace with hash 559303825, now seen corresponding path program 2 times [2022-02-24 04:39:58,313 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:39:58,313 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818027407] [2022-02-24 04:39:58,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:39:58,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:39:58,325 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:39:58,325 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:39:58,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:58,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:39:58,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:58,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:39:58,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:58,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:39:58,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:58,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:39:58,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:58,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:39:58,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:59,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:39:59,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:59,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 04:39:59,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:59,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-02-24 04:39:59,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:59,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-02-24 04:39:59,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:59,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-02-24 04:39:59,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:59,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-02-24 04:39:59,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:59,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 04:39:59,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:59,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:39:59,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:59,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:39:59,160 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:39:59,160 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [818027407] [2022-02-24 04:39:59,160 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [818027407] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:39:59,160 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:39:59,160 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-24 04:39:59,160 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876606272] [2022-02-24 04:39:59,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:39:59,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-24 04:39:59,161 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:39:59,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-24 04:39:59,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-02-24 04:39:59,161 INFO L87 Difference]: Start difference. First operand 341 states and 403 transitions. Second operand has 13 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 6 states have internal predecessors, (74), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:40:01,234 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:40:03,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:40:03,639 INFO L93 Difference]: Finished difference Result 679 states and 814 transitions. [2022-02-24 04:40:03,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-24 04:40:03,640 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 6 states have internal predecessors, (74), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 104 [2022-02-24 04:40:03,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:40:03,641 INFO L225 Difference]: With dead ends: 679 [2022-02-24 04:40:03,641 INFO L226 Difference]: Without dead ends: 393 [2022-02-24 04:40:03,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2022-02-24 04:40:03,646 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 270 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 140 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-02-24 04:40:03,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 421 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 711 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2022-02-24 04:40:03,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-02-24 04:40:03,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 343. [2022-02-24 04:40:03,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 268 states have (on average 1.2276119402985075) internal successors, (329), 272 states have internal predecessors, (329), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-02-24 04:40:03,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 405 transitions. [2022-02-24 04:40:03,785 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 405 transitions. Word has length 104 [2022-02-24 04:40:03,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:40:03,786 INFO L470 AbstractCegarLoop]: Abstraction has 343 states and 405 transitions. [2022-02-24 04:40:03,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 6 states have internal predecessors, (74), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:40:03,786 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 405 transitions. [2022-02-24 04:40:03,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-02-24 04:40:03,787 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:40:03,788 INFO L514 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:40:03,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-02-24 04:40:03,788 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:40:03,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:40:03,788 INFO L85 PathProgramCache]: Analyzing trace with hash -951210595, now seen corresponding path program 3 times [2022-02-24 04:40:03,788 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:40:03,788 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [464380496] [2022-02-24 04:40:03,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:40:03,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:40:03,799 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:40:03,799 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:40:04,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:04,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:40:04,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:04,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:40:04,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:04,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:40:04,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:04,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:40:04,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:04,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:40:04,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:04,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:40:04,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:04,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 04:40:04,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:04,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-24 04:40:04,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:04,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-02-24 04:40:04,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:04,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-02-24 04:40:04,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:04,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-02-24 04:40:04,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:04,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 04:40:04,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:04,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:40:04,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:04,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:40:04,458 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:40:04,458 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [464380496] [2022-02-24 04:40:04,458 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [464380496] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:40:04,458 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:40:04,458 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-24 04:40:04,458 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705166125] [2022-02-24 04:40:04,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:40:04,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-24 04:40:04,459 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:40:04,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-24 04:40:04,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-02-24 04:40:04,460 INFO L87 Difference]: Start difference. First operand 343 states and 405 transitions. Second operand has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 7 states have internal predecessors, (75), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:40:06,543 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:40:08,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:40:08,386 INFO L93 Difference]: Finished difference Result 681 states and 816 transitions. [2022-02-24 04:40:08,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-24 04:40:08,386 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 7 states have internal predecessors, (75), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 105 [2022-02-24 04:40:08,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:40:08,387 INFO L225 Difference]: With dead ends: 681 [2022-02-24 04:40:08,387 INFO L226 Difference]: Without dead ends: 395 [2022-02-24 04:40:08,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2022-02-24 04:40:08,388 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 270 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 143 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-02-24 04:40:08,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 389 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 660 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2022-02-24 04:40:08,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2022-02-24 04:40:08,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 345. [2022-02-24 04:40:08,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 270 states have (on average 1.2259259259259259) internal successors, (331), 274 states have internal predecessors, (331), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-02-24 04:40:08,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 407 transitions. [2022-02-24 04:40:08,481 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 407 transitions. Word has length 105 [2022-02-24 04:40:08,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:40:08,482 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 407 transitions. [2022-02-24 04:40:08,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 7 states have internal predecessors, (75), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:40:08,482 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 407 transitions. [2022-02-24 04:40:08,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-02-24 04:40:08,483 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:40:08,483 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:40:08,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-02-24 04:40:08,483 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:40:08,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:40:08,483 INFO L85 PathProgramCache]: Analyzing trace with hash -532517359, now seen corresponding path program 4 times [2022-02-24 04:40:08,484 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:40:08,484 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1521469644] [2022-02-24 04:40:08,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:40:08,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:40:08,495 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:40:08,495 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:40:08,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:08,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:40:08,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:08,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:40:08,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:08,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:40:08,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:08,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:40:08,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:08,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:40:08,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:08,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:40:08,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:08,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 04:40:09,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:09,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-02-24 04:40:09,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:09,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-02-24 04:40:09,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:09,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-02-24 04:40:09,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:09,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-02-24 04:40:09,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:09,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 04:40:09,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:09,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:40:09,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:09,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:40:09,190 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:40:09,190 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1521469644] [2022-02-24 04:40:09,190 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1521469644] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:40:09,190 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:40:09,190 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-24 04:40:09,190 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212979460] [2022-02-24 04:40:09,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:40:09,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-24 04:40:09,191 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:40:09,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-24 04:40:09,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-02-24 04:40:09,191 INFO L87 Difference]: Start difference. First operand 345 states and 407 transitions. Second operand has 15 states, 15 states have (on average 5.066666666666666) internal successors, (76), 8 states have internal predecessors, (76), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:40:11,266 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:40:14,445 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:40:18,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:40:18,038 INFO L93 Difference]: Finished difference Result 683 states and 818 transitions. [2022-02-24 04:40:18,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-24 04:40:18,039 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.066666666666666) internal successors, (76), 8 states have internal predecessors, (76), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 106 [2022-02-24 04:40:18,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:40:18,040 INFO L225 Difference]: With dead ends: 683 [2022-02-24 04:40:18,040 INFO L226 Difference]: Without dead ends: 397 [2022-02-24 04:40:18,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=126, Invalid=426, Unknown=0, NotChecked=0, Total=552 [2022-02-24 04:40:18,043 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 143 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 1134 mSolverCounterSat, 80 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 1215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1134 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-02-24 04:40:18,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 531 Invalid, 1215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1134 Invalid, 1 Unknown, 0 Unchecked, 8.3s Time] [2022-02-24 04:40:18,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2022-02-24 04:40:18,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 347. [2022-02-24 04:40:18,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 272 states have (on average 1.224264705882353) internal successors, (333), 276 states have internal predecessors, (333), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-02-24 04:40:18,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 409 transitions. [2022-02-24 04:40:18,142 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 409 transitions. Word has length 106 [2022-02-24 04:40:18,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:40:18,143 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 409 transitions. [2022-02-24 04:40:18,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.066666666666666) internal successors, (76), 8 states have internal predecessors, (76), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:40:18,143 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 409 transitions. [2022-02-24 04:40:18,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-02-24 04:40:18,143 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:40:18,144 INFO L514 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:40:18,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-02-24 04:40:18,144 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:40:18,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:40:18,144 INFO L85 PathProgramCache]: Analyzing trace with hash -437928931, now seen corresponding path program 5 times [2022-02-24 04:40:18,144 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:40:18,144 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [926403055] [2022-02-24 04:40:18,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:40:18,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:40:18,158 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:40:18,158 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:40:18,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:18,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:40:18,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:18,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:40:18,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:18,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:40:18,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:18,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:40:18,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:18,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:40:18,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:18,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:40:18,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:18,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 04:40:18,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:18,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-24 04:40:18,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:18,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-02-24 04:40:18,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:18,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-02-24 04:40:18,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:18,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-02-24 04:40:18,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:18,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 04:40:18,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:18,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:40:18,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:18,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:40:18,856 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:40:18,856 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [926403055] [2022-02-24 04:40:18,857 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [926403055] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:40:18,857 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:40:18,857 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-24 04:40:18,857 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971156629] [2022-02-24 04:40:18,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:40:18,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-24 04:40:18,857 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:40:18,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-24 04:40:18,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-02-24 04:40:18,858 INFO L87 Difference]: Start difference. First operand 347 states and 409 transitions. Second operand has 16 states, 16 states have (on average 4.8125) internal successors, (77), 9 states have internal predecessors, (77), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:40:20,918 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:40:23,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:40:23,716 INFO L93 Difference]: Finished difference Result 685 states and 820 transitions. [2022-02-24 04:40:23,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-24 04:40:23,717 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.8125) internal successors, (77), 9 states have internal predecessors, (77), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 107 [2022-02-24 04:40:23,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:40:23,718 INFO L225 Difference]: With dead ends: 685 [2022-02-24 04:40:23,718 INFO L226 Difference]: Without dead ends: 399 [2022-02-24 04:40:23,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=139, Invalid=511, Unknown=0, NotChecked=0, Total=650 [2022-02-24 04:40:23,720 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 328 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 188 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-02-24 04:40:23,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 421 Invalid, 931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 742 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2022-02-24 04:40:23,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2022-02-24 04:40:23,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 349. [2022-02-24 04:40:23,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 274 states have (on average 1.2226277372262773) internal successors, (335), 278 states have internal predecessors, (335), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-02-24 04:40:23,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 411 transitions. [2022-02-24 04:40:23,836 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 411 transitions. Word has length 107 [2022-02-24 04:40:23,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:40:23,836 INFO L470 AbstractCegarLoop]: Abstraction has 349 states and 411 transitions. [2022-02-24 04:40:23,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.8125) internal successors, (77), 9 states have internal predecessors, (77), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:40:23,837 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 411 transitions. [2022-02-24 04:40:23,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-02-24 04:40:23,837 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:40:23,837 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:40:23,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-02-24 04:40:23,838 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:40:23,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:40:23,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1800654959, now seen corresponding path program 6 times [2022-02-24 04:40:23,838 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:40:23,838 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [379639364] [2022-02-24 04:40:23,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:40:23,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:40:23,854 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:40:23,855 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:40:24,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:24,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:40:24,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:24,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:40:24,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:24,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:40:24,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:24,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:40:24,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:24,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:40:24,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:24,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:40:24,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:24,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 04:40:24,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:24,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-02-24 04:40:24,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:24,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-24 04:40:24,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:24,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-02-24 04:40:24,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:24,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-02-24 04:40:24,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:24,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 04:40:24,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:24,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:40:24,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:24,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:40:24,626 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:40:24,626 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [379639364] [2022-02-24 04:40:24,626 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [379639364] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:40:24,626 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:40:24,626 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-24 04:40:24,626 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481951683] [2022-02-24 04:40:24,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:40:24,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-24 04:40:24,626 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:40:24,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-24 04:40:24,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2022-02-24 04:40:24,627 INFO L87 Difference]: Start difference. First operand 349 states and 411 transitions. Second operand has 17 states, 17 states have (on average 4.588235294117647) internal successors, (78), 10 states have internal predecessors, (78), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:40:26,700 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:40:30,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:40:30,872 INFO L93 Difference]: Finished difference Result 687 states and 822 transitions. [2022-02-24 04:40:30,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-24 04:40:30,872 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.588235294117647) internal successors, (78), 10 states have internal predecessors, (78), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 108 [2022-02-24 04:40:30,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:40:30,874 INFO L225 Difference]: With dead ends: 687 [2022-02-24 04:40:30,874 INFO L226 Difference]: Without dead ends: 401 [2022-02-24 04:40:30,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=152, Invalid=604, Unknown=0, NotChecked=0, Total=756 [2022-02-24 04:40:30,876 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 328 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 192 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 1202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-02-24 04:40:30,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 515 Invalid, 1202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 1009 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2022-02-24 04:40:30,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2022-02-24 04:40:30,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 351. [2022-02-24 04:40:30,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 276 states have (on average 1.2210144927536233) internal successors, (337), 280 states have internal predecessors, (337), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-02-24 04:40:30,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 413 transitions. [2022-02-24 04:40:30,983 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 413 transitions. Word has length 108 [2022-02-24 04:40:30,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:40:30,983 INFO L470 AbstractCegarLoop]: Abstraction has 351 states and 413 transitions. [2022-02-24 04:40:30,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.588235294117647) internal successors, (78), 10 states have internal predecessors, (78), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:40:30,983 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 413 transitions. [2022-02-24 04:40:30,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-02-24 04:40:30,984 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:40:30,984 INFO L514 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:40:30,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-02-24 04:40:30,984 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:40:30,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:40:30,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1095488867, now seen corresponding path program 7 times [2022-02-24 04:40:30,985 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:40:30,985 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400439918] [2022-02-24 04:40:30,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:40:30,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:40:30,998 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:40:30,998 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:40:31,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:31,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:40:31,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:31,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:40:31,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:31,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:40:31,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:31,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:40:31,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:31,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:40:31,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:31,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:40:31,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:31,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 04:40:31,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:31,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-02-24 04:40:31,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:31,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-02-24 04:40:31,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:31,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-02-24 04:40:31,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:31,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-24 04:40:31,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:31,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 04:40:31,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:31,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:40:31,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:31,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:40:31,683 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:40:31,683 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400439918] [2022-02-24 04:40:31,683 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1400439918] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:40:31,683 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:40:31,683 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-02-24 04:40:31,683 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551733269] [2022-02-24 04:40:31,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:40:31,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-24 04:40:31,684 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:40:31,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-24 04:40:31,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-02-24 04:40:31,685 INFO L87 Difference]: Start difference. First operand 351 states and 413 transitions. Second operand has 18 states, 18 states have (on average 4.388888888888889) internal successors, (79), 11 states have internal predecessors, (79), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:40:33,749 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 [] [2022-02-24 04:40:37,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:40:37,180 INFO L93 Difference]: Finished difference Result 689 states and 824 transitions. [2022-02-24 04:40:37,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-24 04:40:37,180 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.388888888888889) internal successors, (79), 11 states have internal predecessors, (79), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 109 [2022-02-24 04:40:37,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:40:37,181 INFO L225 Difference]: With dead ends: 689 [2022-02-24 04:40:37,182 INFO L226 Difference]: Without dead ends: 403 [2022-02-24 04:40:37,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=165, Invalid=705, Unknown=0, NotChecked=0, Total=870 [2022-02-24 04:40:37,183 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 258 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 171 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 1115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-02-24 04:40:37,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 498 Invalid, 1115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 943 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2022-02-24 04:40:37,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2022-02-24 04:40:37,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 353. [2022-02-24 04:40:37,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 278 states have (on average 1.2194244604316546) internal successors, (339), 282 states have internal predecessors, (339), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-02-24 04:40:37,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 415 transitions. [2022-02-24 04:40:37,301 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 415 transitions. Word has length 109 [2022-02-24 04:40:37,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:40:37,301 INFO L470 AbstractCegarLoop]: Abstraction has 353 states and 415 transitions. [2022-02-24 04:40:37,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.388888888888889) internal successors, (79), 11 states have internal predecessors, (79), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:40:37,302 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 415 transitions. [2022-02-24 04:40:37,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-02-24 04:40:37,302 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:40:37,302 INFO L514 BasicCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:40:37,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-02-24 04:40:37,303 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:40:37,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:40:37,303 INFO L85 PathProgramCache]: Analyzing trace with hash -710176495, now seen corresponding path program 8 times [2022-02-24 04:40:37,303 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:40:37,303 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143108474] [2022-02-24 04:40:37,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:40:37,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:40:37,316 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:40:37,316 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:40:37,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:37,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:40:37,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:37,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:40:37,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:37,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:40:37,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:37,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:40:37,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:37,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:40:37,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:37,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:40:37,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:37,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 04:40:37,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:37,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:40:37,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:38,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-02-24 04:40:38,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:38,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-02-24 04:40:38,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:38,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-02-24 04:40:38,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:38,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 04:40:38,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:38,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:40:38,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:38,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:40:38,070 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:40:38,071 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1143108474] [2022-02-24 04:40:38,071 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1143108474] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:40:38,071 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:40:38,071 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-02-24 04:40:38,071 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134125188] [2022-02-24 04:40:38,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:40:38,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-24 04:40:38,072 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:40:38,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-24 04:40:38,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2022-02-24 04:40:38,072 INFO L87 Difference]: Start difference. First operand 353 states and 415 transitions. Second operand has 19 states, 19 states have (on average 4.2105263157894735) internal successors, (80), 12 states have internal predecessors, (80), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:40:40,150 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:40:45,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:40:45,442 INFO L93 Difference]: Finished difference Result 691 states and 826 transitions. [2022-02-24 04:40:45,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-24 04:40:45,442 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.2105263157894735) internal successors, (80), 12 states have internal predecessors, (80), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 110 [2022-02-24 04:40:45,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:40:45,444 INFO L225 Difference]: With dead ends: 691 [2022-02-24 04:40:45,444 INFO L226 Difference]: Without dead ends: 405 [2022-02-24 04:40:45,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=178, Invalid=814, Unknown=0, NotChecked=0, Total=992 [2022-02-24 04:40:45,445 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 200 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 1735 mSolverCounterSat, 130 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 1866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1735 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-02-24 04:40:45,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 763 Invalid, 1866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1735 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2022-02-24 04:40:45,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2022-02-24 04:40:45,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 355. [2022-02-24 04:40:45,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 280 states have (on average 1.2178571428571427) internal successors, (341), 284 states have internal predecessors, (341), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-02-24 04:40:45,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 417 transitions. [2022-02-24 04:40:45,558 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 417 transitions. Word has length 110 [2022-02-24 04:40:45,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:40:45,558 INFO L470 AbstractCegarLoop]: Abstraction has 355 states and 417 transitions. [2022-02-24 04:40:45,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.2105263157894735) internal successors, (80), 12 states have internal predecessors, (80), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:40:45,558 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 417 transitions. [2022-02-24 04:40:45,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-02-24 04:40:45,559 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:40:45,559 INFO L514 BasicCegarLoop]: trace histogram [9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:40:45,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-02-24 04:40:45,559 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:40:45,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:40:45,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1650394851, now seen corresponding path program 9 times [2022-02-24 04:40:45,560 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:40:45,560 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [404206753] [2022-02-24 04:40:45,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:40:45,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:40:45,599 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:40:45,599 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:40:45,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:45,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:40:45,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:45,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:40:45,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:45,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:40:45,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:45,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:40:45,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:45,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:40:46,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:46,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:40:46,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:46,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 04:40:46,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:46,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-02-24 04:40:46,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:46,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-02-24 04:40:46,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:46,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-24 04:40:46,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:46,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-02-24 04:40:46,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:46,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 04:40:46,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:46,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:40:46,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:46,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:40:46,416 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:40:46,417 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [404206753] [2022-02-24 04:40:46,417 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [404206753] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:40:46,417 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:40:46,417 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-24 04:40:46,417 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457663884] [2022-02-24 04:40:46,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:40:46,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-24 04:40:46,417 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:40:46,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-24 04:40:46,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2022-02-24 04:40:46,418 INFO L87 Difference]: Start difference. First operand 355 states and 417 transitions. Second operand has 20 states, 20 states have (on average 4.05) internal successors, (81), 13 states have internal predecessors, (81), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:40:48,492 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:40:51,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:40:51,377 INFO L93 Difference]: Finished difference Result 693 states and 828 transitions. [2022-02-24 04:40:51,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-24 04:40:51,378 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.05) internal successors, (81), 13 states have internal predecessors, (81), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 111 [2022-02-24 04:40:51,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:40:51,379 INFO L225 Difference]: With dead ends: 693 [2022-02-24 04:40:51,379 INFO L226 Difference]: Without dead ends: 407 [2022-02-24 04:40:51,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=191, Invalid=931, Unknown=0, NotChecked=0, Total=1122 [2022-02-24 04:40:51,381 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 213 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 118 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 1168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-02-24 04:40:51,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 454 Invalid, 1168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1049 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2022-02-24 04:40:51,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2022-02-24 04:40:51,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 357. [2022-02-24 04:40:51,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 282 states have (on average 1.2163120567375887) internal successors, (343), 286 states have internal predecessors, (343), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-02-24 04:40:51,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 419 transitions. [2022-02-24 04:40:51,505 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 419 transitions. Word has length 111 [2022-02-24 04:40:51,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:40:51,505 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 419 transitions. [2022-02-24 04:40:51,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.05) internal successors, (81), 13 states have internal predecessors, (81), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:40:51,506 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 419 transitions. [2022-02-24 04:40:51,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-02-24 04:40:51,506 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:40:51,507 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:40:51,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-02-24 04:40:51,507 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:40:51,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:40:51,507 INFO L85 PathProgramCache]: Analyzing trace with hash -732392815, now seen corresponding path program 10 times [2022-02-24 04:40:51,507 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:40:51,507 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [965168290] [2022-02-24 04:40:51,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:40:51,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:40:51,525 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:40:51,525 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:40:51,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:51,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:40:51,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:51,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:40:51,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:51,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:40:51,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:51,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:40:51,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:51,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:40:51,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:51,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:40:51,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:51,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 04:40:51,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:52,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-02-24 04:40:52,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:52,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-02-24 04:40:52,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:52,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-02-24 04:40:52,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:52,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-02-24 04:40:52,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:52,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 04:40:52,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:52,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:40:52,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:52,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:40:52,307 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:40:52,307 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [965168290] [2022-02-24 04:40:52,308 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [965168290] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:40:52,308 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:40:52,308 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-24 04:40:52,308 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852327260] [2022-02-24 04:40:52,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:40:52,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-24 04:40:52,308 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:40:52,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-24 04:40:52,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2022-02-24 04:40:52,309 INFO L87 Difference]: Start difference. First operand 357 states and 419 transitions. Second operand has 21 states, 21 states have (on average 3.9047619047619047) internal successors, (82), 14 states have internal predecessors, (82), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:40:54,384 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:40:57,374 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:40:59,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:40:59,571 INFO L93 Difference]: Finished difference Result 695 states and 830 transitions. [2022-02-24 04:40:59,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-24 04:40:59,571 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.9047619047619047) internal successors, (82), 14 states have internal predecessors, (82), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 112 [2022-02-24 04:40:59,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:40:59,573 INFO L225 Difference]: With dead ends: 695 [2022-02-24 04:40:59,573 INFO L226 Difference]: Without dead ends: 409 [2022-02-24 04:40:59,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=204, Invalid=1056, Unknown=0, NotChecked=0, Total=1260 [2022-02-24 04:40:59,575 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 271 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 1365 mSolverCounterSat, 165 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 1531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 1365 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-02-24 04:40:59,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 595 Invalid, 1531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 1365 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2022-02-24 04:40:59,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2022-02-24 04:40:59,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 359. [2022-02-24 04:40:59,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 284 states have (on average 1.2147887323943662) internal successors, (345), 288 states have internal predecessors, (345), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-02-24 04:40:59,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 421 transitions. [2022-02-24 04:40:59,714 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 421 transitions. Word has length 112 [2022-02-24 04:40:59,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:40:59,715 INFO L470 AbstractCegarLoop]: Abstraction has 359 states and 421 transitions. [2022-02-24 04:40:59,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.9047619047619047) internal successors, (82), 14 states have internal predecessors, (82), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:40:59,715 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 421 transitions. [2022-02-24 04:40:59,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-02-24 04:40:59,716 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:40:59,716 INFO L514 BasicCegarLoop]: trace histogram [11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:40:59,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-02-24 04:40:59,716 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:40:59,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:40:59,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1955866525, now seen corresponding path program 11 times [2022-02-24 04:40:59,716 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:40:59,716 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1685807917] [2022-02-24 04:40:59,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:40:59,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:40:59,732 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:40:59,732 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:41:00,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:00,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:41:00,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:00,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:41:00,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:00,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:41:00,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:00,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:41:00,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:00,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:41:00,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:00,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:41:00,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:00,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 04:41:00,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:00,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-02-24 04:41:00,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:00,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-02-24 04:41:00,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:00,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-02-24 04:41:00,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:00,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-02-24 04:41:00,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:00,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 04:41:00,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:00,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:41:00,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:00,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:41:00,627 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:41:00,627 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1685807917] [2022-02-24 04:41:00,627 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1685807917] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:41:00,628 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:41:00,628 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-02-24 04:41:00,628 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792478436] [2022-02-24 04:41:00,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:41:00,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-24 04:41:00,628 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:41:00,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-24 04:41:00,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2022-02-24 04:41:00,628 INFO L87 Difference]: Start difference. First operand 359 states and 421 transitions. Second operand has 22 states, 22 states have (on average 3.772727272727273) internal successors, (83), 15 states have internal predecessors, (83), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:41:02,720 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:41:06,546 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:41:09,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:41:09,687 INFO L93 Difference]: Finished difference Result 697 states and 832 transitions. [2022-02-24 04:41:09,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-24 04:41:09,687 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.772727272727273) internal successors, (83), 15 states have internal predecessors, (83), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 113 [2022-02-24 04:41:09,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:41:09,689 INFO L225 Difference]: With dead ends: 697 [2022-02-24 04:41:09,689 INFO L226 Difference]: Without dead ends: 411 [2022-02-24 04:41:09,690 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=217, Invalid=1189, Unknown=0, NotChecked=0, Total=1406 [2022-02-24 04:41:09,690 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 271 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 2090 mSolverCounterSat, 167 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 2258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 2090 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-02-24 04:41:09,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 845 Invalid, 2258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 2090 Invalid, 1 Unknown, 0 Unchecked, 8.1s Time] [2022-02-24 04:41:09,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2022-02-24 04:41:09,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 361. [2022-02-24 04:41:09,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 286 states have (on average 1.2132867132867133) internal successors, (347), 290 states have internal predecessors, (347), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-02-24 04:41:09,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 423 transitions. [2022-02-24 04:41:09,848 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 423 transitions. Word has length 113 [2022-02-24 04:41:09,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:41:09,848 INFO L470 AbstractCegarLoop]: Abstraction has 361 states and 423 transitions. [2022-02-24 04:41:09,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.772727272727273) internal successors, (83), 15 states have internal predecessors, (83), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:41:09,848 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 423 transitions. [2022-02-24 04:41:09,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-02-24 04:41:09,849 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:41:09,849 INFO L514 BasicCegarLoop]: trace histogram [12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:41:09,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-02-24 04:41:09,849 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:41:09,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:41:09,850 INFO L85 PathProgramCache]: Analyzing trace with hash -607439855, now seen corresponding path program 12 times [2022-02-24 04:41:09,850 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:41:09,850 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1149930340] [2022-02-24 04:41:09,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:41:09,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:41:09,865 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:41:09,865 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:41:10,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:10,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:41:10,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:10,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:41:10,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:10,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:41:10,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:10,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:41:10,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:10,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:41:10,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:10,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:41:10,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:10,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 04:41:10,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:11,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-02-24 04:41:11,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:11,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-02-24 04:41:11,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:11,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-02-24 04:41:11,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:11,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-02-24 04:41:11,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:11,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 04:41:11,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:11,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:41:11,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:11,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:41:11,162 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:41:11,162 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1149930340] [2022-02-24 04:41:11,162 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1149930340] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:41:11,162 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:41:11,162 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-02-24 04:41:11,162 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128607595] [2022-02-24 04:41:11,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:41:11,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-24 04:41:11,163 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:41:11,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-24 04:41:11,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2022-02-24 04:41:11,163 INFO L87 Difference]: Start difference. First operand 361 states and 423 transitions. Second operand has 23 states, 23 states have (on average 3.652173913043478) internal successors, (84), 16 states have internal predecessors, (84), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:41:13,241 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:41:17,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:41:17,578 INFO L93 Difference]: Finished difference Result 699 states and 834 transitions. [2022-02-24 04:41:17,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-24 04:41:17,578 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.652173913043478) internal successors, (84), 16 states have internal predecessors, (84), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 114 [2022-02-24 04:41:17,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:41:17,579 INFO L225 Difference]: With dead ends: 699 [2022-02-24 04:41:17,580 INFO L226 Difference]: Without dead ends: 413 [2022-02-24 04:41:17,580 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 [2022-02-24 04:41:17,582 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 254 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 191 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 1085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 893 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-02-24 04:41:17,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 422 Invalid, 1085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 893 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2022-02-24 04:41:17,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2022-02-24 04:41:17,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 363. [2022-02-24 04:41:17,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 288 states have (on average 1.2118055555555556) internal successors, (349), 292 states have internal predecessors, (349), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-02-24 04:41:17,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 425 transitions. [2022-02-24 04:41:17,745 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 425 transitions. Word has length 114 [2022-02-24 04:41:17,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:41:17,745 INFO L470 AbstractCegarLoop]: Abstraction has 363 states and 425 transitions. [2022-02-24 04:41:17,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.652173913043478) internal successors, (84), 16 states have internal predecessors, (84), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:41:17,746 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 425 transitions. [2022-02-24 04:41:17,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-02-24 04:41:17,746 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:41:17,747 INFO L514 BasicCegarLoop]: trace histogram [13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:41:17,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-02-24 04:41:17,747 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:41:17,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:41:17,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1534440989, now seen corresponding path program 13 times [2022-02-24 04:41:17,747 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:41:17,747 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1826549755] [2022-02-24 04:41:17,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:41:17,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:41:17,764 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:41:17,764 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:41:17,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:18,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:41:18,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:18,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:41:18,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:18,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:41:18,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:18,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:41:18,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:18,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:41:18,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:18,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:41:18,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:18,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 04:41:18,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:18,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-02-24 04:41:18,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:18,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-02-24 04:41:18,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:18,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-02-24 04:41:18,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:18,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-02-24 04:41:18,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:18,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 04:41:18,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:18,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:41:18,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:18,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:41:18,568 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:41:18,568 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1826549755] [2022-02-24 04:41:18,568 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1826549755] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:41:18,568 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:41:18,568 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-02-24 04:41:18,568 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311777713] [2022-02-24 04:41:18,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:41:18,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-24 04:41:18,568 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:41:18,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-24 04:41:18,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2022-02-24 04:41:18,569 INFO L87 Difference]: Start difference. First operand 363 states and 425 transitions. Second operand has 24 states, 24 states have (on average 3.5416666666666665) internal successors, (85), 17 states have internal predecessors, (85), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:41:20,675 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:41:23,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:41:23,998 INFO L93 Difference]: Finished difference Result 701 states and 836 transitions. [2022-02-24 04:41:23,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-24 04:41:23,998 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.5416666666666665) internal successors, (85), 17 states have internal predecessors, (85), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 115 [2022-02-24 04:41:23,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:41:24,000 INFO L225 Difference]: With dead ends: 701 [2022-02-24 04:41:24,000 INFO L226 Difference]: Without dead ends: 415 [2022-02-24 04:41:24,001 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 [2022-02-24 04:41:24,002 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 328 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 918 mSolverCounterSat, 221 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 1140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 918 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-02-24 04:41:24,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 421 Invalid, 1140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 918 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2022-02-24 04:41:24,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2022-02-24 04:41:24,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 365. [2022-02-24 04:41:24,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 290 states have (on average 1.210344827586207) internal successors, (351), 294 states have internal predecessors, (351), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-02-24 04:41:24,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 427 transitions. [2022-02-24 04:41:24,166 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 427 transitions. Word has length 115 [2022-02-24 04:41:24,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:41:24,167 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 427 transitions. [2022-02-24 04:41:24,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.5416666666666665) internal successors, (85), 17 states have internal predecessors, (85), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:41:24,167 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 427 transitions. [2022-02-24 04:41:24,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-02-24 04:41:24,167 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:41:24,168 INFO L514 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:41:24,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-02-24 04:41:24,168 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:41:24,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:41:24,168 INFO L85 PathProgramCache]: Analyzing trace with hash -786729583, now seen corresponding path program 14 times [2022-02-24 04:41:24,168 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:41:24,168 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468228610] [2022-02-24 04:41:24,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:41:24,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:41:24,185 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:41:24,185 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:41:24,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:24,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:41:24,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:24,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:41:24,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:24,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:41:24,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:24,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:41:24,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:24,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:41:24,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:24,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:41:24,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:24,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 04:41:24,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:25,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-24 04:41:25,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:25,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-24 04:41:25,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:25,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-02-24 04:41:25,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:25,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-02-24 04:41:25,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:25,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 04:41:25,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:25,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:41:25,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:25,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:41:25,362 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:41:25,362 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468228610] [2022-02-24 04:41:25,362 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1468228610] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:41:25,362 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:41:25,362 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-02-24 04:41:25,362 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012804117] [2022-02-24 04:41:25,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:41:25,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-24 04:41:25,363 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:41:25,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-24 04:41:25,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=529, Unknown=0, NotChecked=0, Total=600 [2022-02-24 04:41:25,363 INFO L87 Difference]: Start difference. First operand 365 states and 427 transitions. Second operand has 25 states, 25 states have (on average 3.44) internal successors, (86), 18 states have internal predecessors, (86), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:41:27,477 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:41:35,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:41:35,026 INFO L93 Difference]: Finished difference Result 703 states and 838 transitions. [2022-02-24 04:41:35,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-24 04:41:35,027 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.44) internal successors, (86), 18 states have internal predecessors, (86), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 116 [2022-02-24 04:41:35,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:41:35,028 INFO L225 Difference]: With dead ends: 703 [2022-02-24 04:41:35,029 INFO L226 Difference]: Without dead ends: 417 [2022-02-24 04:41:35,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=256, Invalid=1636, Unknown=0, NotChecked=0, Total=1892 [2022-02-24 04:41:35,030 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 200 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 2387 mSolverCounterSat, 150 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 2538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 2387 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-02-24 04:41:35,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 968 Invalid, 2538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 2387 Invalid, 1 Unknown, 0 Unchecked, 8.4s Time] [2022-02-24 04:41:35,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2022-02-24 04:41:35,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 367. [2022-02-24 04:41:35,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 292 states have (on average 1.2089041095890412) internal successors, (353), 296 states have internal predecessors, (353), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-02-24 04:41:35,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 429 transitions. [2022-02-24 04:41:35,198 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 429 transitions. Word has length 116 [2022-02-24 04:41:35,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:41:35,198 INFO L470 AbstractCegarLoop]: Abstraction has 367 states and 429 transitions. [2022-02-24 04:41:35,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.44) internal successors, (86), 18 states have internal predecessors, (86), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:41:35,199 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 429 transitions. [2022-02-24 04:41:35,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-02-24 04:41:35,199 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:41:35,199 INFO L514 BasicCegarLoop]: trace histogram [15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:41:35,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-02-24 04:41:35,200 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:41:35,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:41:35,200 INFO L85 PathProgramCache]: Analyzing trace with hash 271426717, now seen corresponding path program 15 times [2022-02-24 04:41:35,200 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:41:35,200 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [519277313] [2022-02-24 04:41:35,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:41:35,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:41:35,217 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:41:35,217 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:41:35,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:35,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:41:35,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:35,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:41:35,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:35,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:41:35,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:35,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:41:35,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:35,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:41:35,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:35,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:41:35,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:35,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 04:41:35,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:36,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-02-24 04:41:36,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:36,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-02-24 04:41:36,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:36,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-02-24 04:41:36,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:36,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-24 04:41:36,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:36,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 04:41:36,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:36,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:41:36,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:36,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:41:36,539 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:41:36,539 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [519277313] [2022-02-24 04:41:36,539 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [519277313] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:41:36,539 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:41:36,540 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-02-24 04:41:36,540 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097296373] [2022-02-24 04:41:36,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:41:36,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-24 04:41:36,540 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:41:36,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-24 04:41:36,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=576, Unknown=0, NotChecked=0, Total=650 [2022-02-24 04:41:36,541 INFO L87 Difference]: Start difference. First operand 367 states and 429 transitions. Second operand has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 19 states have internal predecessors, (87), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:41:38,617 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:41:43,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:41:43,818 INFO L93 Difference]: Finished difference Result 705 states and 840 transitions. [2022-02-24 04:41:43,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-24 04:41:43,818 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 19 states have internal predecessors, (87), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 117 [2022-02-24 04:41:43,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:41:43,820 INFO L225 Difference]: With dead ends: 705 [2022-02-24 04:41:43,820 INFO L226 Difference]: Without dead ends: 419 [2022-02-24 04:41:43,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=269, Invalid=1801, Unknown=0, NotChecked=0, Total=2070 [2022-02-24 04:41:43,821 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 213 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 1471 mSolverCounterSat, 129 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 1601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1471 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-02-24 04:41:43,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 548 Invalid, 1601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1471 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2022-02-24 04:41:43,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2022-02-24 04:41:43,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 369. [2022-02-24 04:41:43,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 294 states have (on average 1.2074829931972788) internal successors, (355), 298 states have internal predecessors, (355), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-02-24 04:41:43,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 431 transitions. [2022-02-24 04:41:43,961 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 431 transitions. Word has length 117 [2022-02-24 04:41:43,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:41:43,961 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 431 transitions. [2022-02-24 04:41:43,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 19 states have internal predecessors, (87), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:41:43,962 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 431 transitions. [2022-02-24 04:41:43,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-02-24 04:41:43,962 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:41:43,962 INFO L514 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:41:43,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-02-24 04:41:43,963 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:41:43,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:41:43,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1285466351, now seen corresponding path program 16 times [2022-02-24 04:41:43,963 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:41:43,963 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1991166218] [2022-02-24 04:41:43,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:41:43,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:41:43,982 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:41:43,982 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:41:44,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:44,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:41:44,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:44,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:41:44,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:44,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:41:44,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:44,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:41:44,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:44,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:41:44,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:44,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:41:44,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:44,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 04:41:44,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:44,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-24 04:41:44,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:44,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-02-24 04:41:44,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:44,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-02-24 04:41:44,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:44,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-02-24 04:41:44,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:45,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 04:41:45,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:45,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:41:45,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:45,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:41:45,024 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:41:45,024 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1991166218] [2022-02-24 04:41:45,024 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1991166218] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:41:45,024 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:41:45,024 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-02-24 04:41:45,025 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511417218] [2022-02-24 04:41:45,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:41:45,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-24 04:41:45,051 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:41:45,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-24 04:41:45,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=625, Unknown=0, NotChecked=0, Total=702 [2022-02-24 04:41:45,052 INFO L87 Difference]: Start difference. First operand 369 states and 431 transitions. Second operand has 27 states, 27 states have (on average 3.259259259259259) internal successors, (88), 20 states have internal predecessors, (88), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:41:47,145 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:41:53,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:41:53,807 INFO L93 Difference]: Finished difference Result 707 states and 842 transitions. [2022-02-24 04:41:53,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-24 04:41:53,808 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.259259259259259) internal successors, (88), 20 states have internal predecessors, (88), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 118 [2022-02-24 04:41:53,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:41:53,809 INFO L225 Difference]: With dead ends: 707 [2022-02-24 04:41:53,809 INFO L226 Difference]: Without dead ends: 421 [2022-02-24 04:41:53,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=282, Invalid=1974, Unknown=0, NotChecked=0, Total=2256 [2022-02-24 04:41:53,810 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 142 mSDsluCounter, 703 mSDsCounter, 0 mSdLazyCounter, 2236 mSolverCounterSat, 103 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 2340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 2236 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-02-24 04:41:53,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 842 Invalid, 2340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 2236 Invalid, 1 Unknown, 0 Unchecked, 7.4s Time] [2022-02-24 04:41:53,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2022-02-24 04:41:53,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 371. [2022-02-24 04:41:53,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 296 states have (on average 1.2060810810810811) internal successors, (357), 300 states have internal predecessors, (357), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-02-24 04:41:53,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 433 transitions. [2022-02-24 04:41:53,956 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 433 transitions. Word has length 118 [2022-02-24 04:41:53,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:41:53,956 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 433 transitions. [2022-02-24 04:41:53,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.259259259259259) internal successors, (88), 20 states have internal predecessors, (88), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:41:53,956 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 433 transitions. [2022-02-24 04:41:53,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-02-24 04:41:53,957 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:41:53,957 INFO L514 BasicCegarLoop]: trace histogram [17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:41:53,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-02-24 04:41:53,957 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:41:53,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:41:53,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1990456093, now seen corresponding path program 17 times [2022-02-24 04:41:53,958 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:41:53,958 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1617735694] [2022-02-24 04:41:53,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:41:53,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:41:53,977 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:41:53,977 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:41:54,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:54,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:41:54,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:54,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:41:54,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:54,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:41:54,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:54,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:41:54,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:54,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:41:54,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:54,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:41:54,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:54,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 04:41:54,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:55,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-02-24 04:41:55,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:55,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-02-24 04:41:55,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:55,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-24 04:41:55,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:55,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-02-24 04:41:55,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:55,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 04:41:55,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:55,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:41:55,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:55,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:41:55,452 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:41:55,453 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1617735694] [2022-02-24 04:41:55,453 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1617735694] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:41:55,453 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:41:55,453 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-02-24 04:41:55,453 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247900658] [2022-02-24 04:41:55,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:41:55,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-24 04:41:55,453 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:41:55,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-24 04:41:55,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=676, Unknown=0, NotChecked=0, Total=756 [2022-02-24 04:41:55,454 INFO L87 Difference]: Start difference. First operand 371 states and 433 transitions. Second operand has 28 states, 28 states have (on average 3.1785714285714284) internal successors, (89), 21 states have internal predecessors, (89), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:41:57,568 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:42:06,581 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:42:08,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:42:08,273 INFO L93 Difference]: Finished difference Result 709 states and 844 transitions. [2022-02-24 04:42:08,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-24 04:42:08,273 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.1785714285714284) internal successors, (89), 21 states have internal predecessors, (89), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 119 [2022-02-24 04:42:08,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:42:08,275 INFO L225 Difference]: With dead ends: 709 [2022-02-24 04:42:08,275 INFO L226 Difference]: Without dead ends: 423 [2022-02-24 04:42:08,276 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 [2022-02-24 04:42:08,276 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 271 mSDsluCounter, 879 mSDsCounter, 0 mSdLazyCounter, 2716 mSolverCounterSat, 186 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 2903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 2716 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2022-02-24 04:42:08,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 1018 Invalid, 2903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 2716 Invalid, 1 Unknown, 0 Unchecked, 11.3s Time] [2022-02-24 04:42:08,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-02-24 04:42:08,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 373. [2022-02-24 04:42:08,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 298 states have (on average 1.2046979865771812) internal successors, (359), 302 states have internal predecessors, (359), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-02-24 04:42:08,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 435 transitions. [2022-02-24 04:42:08,431 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 435 transitions. Word has length 119 [2022-02-24 04:42:08,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:42:08,433 INFO L470 AbstractCegarLoop]: Abstraction has 373 states and 435 transitions. [2022-02-24 04:42:08,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.1785714285714284) internal successors, (89), 21 states have internal predecessors, (89), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:42:08,433 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 435 transitions. [2022-02-24 04:42:08,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-02-24 04:42:08,434 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:42:08,434 INFO L514 BasicCegarLoop]: trace histogram [18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:42:08,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-02-24 04:42:08,434 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:42:08,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:42:08,434 INFO L85 PathProgramCache]: Analyzing trace with hash 464836753, now seen corresponding path program 18 times [2022-02-24 04:42:08,434 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:42:08,435 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1886464133] [2022-02-24 04:42:08,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:42:08,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:42:08,455 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:42:08,455 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:42:08,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:08,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:42:08,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:08,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:42:08,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:08,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:42:08,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:08,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:42:08,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:08,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:42:08,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:08,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:42:08,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:08,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 04:42:08,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:09,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-24 04:42:09,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:09,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-02-24 04:42:09,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:09,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-02-24 04:42:09,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:09,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-02-24 04:42:09,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:09,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 04:42:09,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:09,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:42:09,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:09,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:42:09,582 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:42:09,582 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1886464133] [2022-02-24 04:42:09,582 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1886464133] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:42:09,582 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:42:09,582 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-02-24 04:42:09,583 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362773059] [2022-02-24 04:42:09,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:42:09,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-24 04:42:09,583 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:42:09,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-24 04:42:09,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=729, Unknown=0, NotChecked=0, Total=812 [2022-02-24 04:42:09,584 INFO L87 Difference]: Start difference. First operand 373 states and 435 transitions. Second operand has 29 states, 29 states have (on average 3.103448275862069) internal successors, (90), 22 states have internal predecessors, (90), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:42:11,651 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:42:17,411 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:42:18,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:42:18,663 INFO L93 Difference]: Finished difference Result 711 states and 846 transitions. [2022-02-24 04:42:18,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-24 04:42:18,663 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.103448275862069) internal successors, (90), 22 states have internal predecessors, (90), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 120 [2022-02-24 04:42:18,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:42:18,665 INFO L225 Difference]: With dead ends: 711 [2022-02-24 04:42:18,665 INFO L226 Difference]: Without dead ends: 425 [2022-02-24 04:42:18,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=308, Invalid=2344, Unknown=0, NotChecked=0, Total=2652 [2022-02-24 04:42:18,666 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 212 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 2132 mSolverCounterSat, 134 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 2267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 2132 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-02-24 04:42:18,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 765 Invalid, 2267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 2132 Invalid, 1 Unknown, 0 Unchecked, 7.7s Time] [2022-02-24 04:42:18,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2022-02-24 04:42:18,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 375. [2022-02-24 04:42:18,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 300 states have (on average 1.2033333333333334) internal successors, (361), 304 states have internal predecessors, (361), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-02-24 04:42:18,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 437 transitions. [2022-02-24 04:42:18,827 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 437 transitions. Word has length 120 [2022-02-24 04:42:18,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:42:18,827 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 437 transitions. [2022-02-24 04:42:18,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.103448275862069) internal successors, (90), 22 states have internal predecessors, (90), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:42:18,827 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 437 transitions. [2022-02-24 04:42:18,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-02-24 04:42:18,828 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:42:18,828 INFO L514 BasicCegarLoop]: trace histogram [19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:42:18,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-02-24 04:42:18,829 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:42:18,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:42:18,829 INFO L85 PathProgramCache]: Analyzing trace with hash 415277469, now seen corresponding path program 19 times [2022-02-24 04:42:18,829 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:42:18,829 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [909562348] [2022-02-24 04:42:18,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:42:18,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:42:18,848 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:42:18,848 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:42:19,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:19,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:42:19,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:19,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:42:19,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:19,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:42:19,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:19,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:42:19,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:19,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:42:19,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:19,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:42:19,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:19,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 04:42:19,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:19,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-02-24 04:42:19,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:20,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-02-24 04:42:20,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:20,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-02-24 04:42:20,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:20,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-02-24 04:42:20,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:20,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 04:42:20,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:20,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:42:20,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:20,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:42:20,106 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:42:20,106 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [909562348] [2022-02-24 04:42:20,106 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [909562348] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:42:20,106 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:42:20,106 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-02-24 04:42:20,106 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137716419] [2022-02-24 04:42:20,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:42:20,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-24 04:42:20,106 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:42:20,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-24 04:42:20,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2022-02-24 04:42:20,107 INFO L87 Difference]: Start difference. First operand 375 states and 437 transitions. Second operand has 30 states, 30 states have (on average 3.033333333333333) internal successors, (91), 23 states have internal predecessors, (91), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:42:22,196 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:42:28,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:42:28,464 INFO L93 Difference]: Finished difference Result 713 states and 848 transitions. [2022-02-24 04:42:28,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-24 04:42:28,465 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.033333333333333) internal successors, (91), 23 states have internal predecessors, (91), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 121 [2022-02-24 04:42:28,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:42:28,466 INFO L225 Difference]: With dead ends: 713 [2022-02-24 04:42:28,466 INFO L226 Difference]: Without dead ends: 427 [2022-02-24 04:42:28,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=321, Invalid=2541, Unknown=0, NotChecked=0, Total=2862 [2022-02-24 04:42:28,468 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 213 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 1567 mSolverCounterSat, 137 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 1705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 1567 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-02-24 04:42:28,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 516 Invalid, 1705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 1567 Invalid, 1 Unknown, 0 Unchecked, 6.9s Time] [2022-02-24 04:42:28,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2022-02-24 04:42:28,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 377. [2022-02-24 04:42:28,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 302 states have (on average 1.2019867549668874) internal successors, (363), 306 states have internal predecessors, (363), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-02-24 04:42:28,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 439 transitions. [2022-02-24 04:42:28,625 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 439 transitions. Word has length 121 [2022-02-24 04:42:28,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:42:28,625 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 439 transitions. [2022-02-24 04:42:28,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.033333333333333) internal successors, (91), 23 states have internal predecessors, (91), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:42:28,625 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 439 transitions. [2022-02-24 04:42:28,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-02-24 04:42:28,627 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:42:28,627 INFO L514 BasicCegarLoop]: trace histogram [20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:42:28,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-02-24 04:42:28,627 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:42:28,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:42:28,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1121060335, now seen corresponding path program 20 times [2022-02-24 04:42:28,627 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:42:28,627 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2038296552] [2022-02-24 04:42:28,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:42:28,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:42:28,647 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:42:28,647 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:42:29,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:29,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:42:29,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:29,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:42:29,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:29,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:42:29,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:29,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:42:29,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:29,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:42:29,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:29,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:42:29,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:29,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 04:42:29,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:29,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-02-24 04:42:29,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:29,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-02-24 04:42:29,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:29,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-02-24 04:42:29,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:30,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-02-24 04:42:30,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:30,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 04:42:30,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:30,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:42:30,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:30,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:42:30,067 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:42:30,067 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2038296552] [2022-02-24 04:42:30,067 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2038296552] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:42:30,067 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:42:30,067 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-02-24 04:42:30,067 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150003198] [2022-02-24 04:42:30,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:42:30,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-24 04:42:30,068 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:42:30,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-24 04:42:30,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=841, Unknown=0, NotChecked=0, Total=930 [2022-02-24 04:42:30,069 INFO L87 Difference]: Start difference. First operand 377 states and 439 transitions. Second operand has 31 states, 31 states have (on average 2.967741935483871) internal successors, (92), 24 states have internal predecessors, (92), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:42:32,144 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:42:35,868 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:42:39,147 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:42:39,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:42:39,989 INFO L93 Difference]: Finished difference Result 715 states and 850 transitions. [2022-02-24 04:42:39,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-24 04:42:39,990 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.967741935483871) internal successors, (92), 24 states have internal predecessors, (92), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 122 [2022-02-24 04:42:39,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:42:39,991 INFO L225 Difference]: With dead ends: 715 [2022-02-24 04:42:39,991 INFO L226 Difference]: Without dead ends: 429 [2022-02-24 04:42:39,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=334, Invalid=2746, Unknown=0, NotChecked=0, Total=3080 [2022-02-24 04:42:39,993 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 270 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 1431 mSolverCounterSat, 194 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 1626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 1431 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-02-24 04:42:39,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 515 Invalid, 1626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 1431 Invalid, 1 Unknown, 0 Unchecked, 8.4s Time] [2022-02-24 04:42:39,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2022-02-24 04:42:40,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 379. [2022-02-24 04:42:40,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 304 states have (on average 1.200657894736842) internal successors, (365), 308 states have internal predecessors, (365), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-02-24 04:42:40,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 441 transitions. [2022-02-24 04:42:40,178 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 441 transitions. Word has length 122 [2022-02-24 04:42:40,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:42:40,178 INFO L470 AbstractCegarLoop]: Abstraction has 379 states and 441 transitions. [2022-02-24 04:42:40,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.967741935483871) internal successors, (92), 24 states have internal predecessors, (92), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:42:40,178 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 441 transitions. [2022-02-24 04:42:40,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-02-24 04:42:40,179 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:42:40,179 INFO L514 BasicCegarLoop]: trace histogram [21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:42:40,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-02-24 04:42:40,179 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:42:40,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:42:40,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1502892003, now seen corresponding path program 21 times [2022-02-24 04:42:40,179 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:42:40,179 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [551881186] [2022-02-24 04:42:40,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:42:40,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:42:40,203 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:42:40,203 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:42:40,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:40,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:42:40,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:40,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:42:40,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:40,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:42:40,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:40,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:42:40,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:40,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:42:40,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:40,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:42:40,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:40,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 04:42:40,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:41,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-24 04:42:41,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:41,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-02-24 04:42:41,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:41,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-02-24 04:42:41,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:41,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-02-24 04:42:41,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:41,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 04:42:41,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:41,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:42:41,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:41,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:42:41,370 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:42:41,370 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [551881186] [2022-02-24 04:42:41,370 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [551881186] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:42:41,370 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:42:41,370 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-02-24 04:42:41,370 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036847955] [2022-02-24 04:42:41,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:42:41,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-24 04:42:41,372 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:42:41,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-24 04:42:41,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=900, Unknown=0, NotChecked=0, Total=992 [2022-02-24 04:42:41,372 INFO L87 Difference]: Start difference. First operand 379 states and 441 transitions. Second operand has 32 states, 32 states have (on average 2.90625) internal successors, (93), 25 states have internal predecessors, (93), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:42:43,446 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:42:48,635 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:42:50,608 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:42:54,385 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:42:56,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:42:56,693 INFO L93 Difference]: Finished difference Result 717 states and 852 transitions. [2022-02-24 04:42:56,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-24 04:42:56,693 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.90625) internal successors, (93), 25 states have internal predecessors, (93), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 123 [2022-02-24 04:42:56,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:42:56,695 INFO L225 Difference]: With dead ends: 717 [2022-02-24 04:42:56,695 INFO L226 Difference]: Without dead ends: 431 [2022-02-24 04:42:56,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=347, Invalid=2959, Unknown=0, NotChecked=0, Total=3306 [2022-02-24 04:42:56,696 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 324 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 2824 mSolverCounterSat, 252 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 3077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 2824 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2022-02-24 04:42:56,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [327 Valid, 1003 Invalid, 3077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 2824 Invalid, 1 Unknown, 0 Unchecked, 13.6s Time] [2022-02-24 04:42:56,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2022-02-24 04:42:56,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 381. [2022-02-24 04:42:56,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 306 states have (on average 1.1993464052287581) internal successors, (367), 310 states have internal predecessors, (367), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-02-24 04:42:56,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 443 transitions. [2022-02-24 04:42:56,870 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 443 transitions. Word has length 123 [2022-02-24 04:42:56,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:42:56,870 INFO L470 AbstractCegarLoop]: Abstraction has 381 states and 443 transitions. [2022-02-24 04:42:56,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.90625) internal successors, (93), 25 states have internal predecessors, (93), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:42:56,870 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 443 transitions. [2022-02-24 04:42:56,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-02-24 04:42:56,871 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:42:56,871 INFO L514 BasicCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:42:56,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-02-24 04:42:56,871 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:42:56,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:42:56,872 INFO L85 PathProgramCache]: Analyzing trace with hash -454771823, now seen corresponding path program 22 times [2022-02-24 04:42:56,872 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:42:56,872 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1215058204] [2022-02-24 04:42:56,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:42:56,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:42:56,895 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:42:56,895 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:42:57,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:57,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:42:57,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:57,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:42:57,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:57,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:42:57,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:57,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:42:57,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:57,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:42:57,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:57,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:42:57,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:57,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 04:42:57,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:58,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-02-24 04:42:58,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:58,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-24 04:42:58,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:58,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-02-24 04:42:58,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:58,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-02-24 04:42:58,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:58,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 04:42:58,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:58,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:42:58,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:58,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:42:58,352 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:42:58,352 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1215058204] [2022-02-24 04:42:58,352 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1215058204] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:42:58,352 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:42:58,353 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-02-24 04:42:58,353 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614183369] [2022-02-24 04:42:58,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:42:58,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-24 04:42:58,353 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:42:58,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-24 04:42:58,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=961, Unknown=0, NotChecked=0, Total=1056 [2022-02-24 04:42:58,354 INFO L87 Difference]: Start difference. First operand 381 states and 443 transitions. Second operand has 33 states, 33 states have (on average 2.8484848484848486) internal successors, (94), 26 states have internal predecessors, (94), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:43:00,441 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:43:11,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:43:11,213 INFO L93 Difference]: Finished difference Result 719 states and 854 transitions. [2022-02-24 04:43:11,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-24 04:43:11,213 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.8484848484848486) internal successors, (94), 26 states have internal predecessors, (94), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 124 [2022-02-24 04:43:11,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:43:11,214 INFO L225 Difference]: With dead ends: 719 [2022-02-24 04:43:11,214 INFO L226 Difference]: Without dead ends: 433 [2022-02-24 04:43:11,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=360, Invalid=3180, Unknown=0, NotChecked=0, Total=3540 [2022-02-24 04:43:11,216 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 328 mSDsluCounter, 1143 mSDsCounter, 0 mSdLazyCounter, 3605 mSolverCounterSat, 256 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 1282 SdHoareTripleChecker+Invalid, 3862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 3605 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2022-02-24 04:43:11,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 1282 Invalid, 3862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 3605 Invalid, 1 Unknown, 0 Unchecked, 11.3s Time] [2022-02-24 04:43:11,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2022-02-24 04:43:11,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 383. [2022-02-24 04:43:11,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 308 states have (on average 1.198051948051948) internal successors, (369), 312 states have internal predecessors, (369), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-02-24 04:43:11,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 445 transitions. [2022-02-24 04:43:11,372 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 445 transitions. Word has length 124 [2022-02-24 04:43:11,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:43:11,372 INFO L470 AbstractCegarLoop]: Abstraction has 383 states and 445 transitions. [2022-02-24 04:43:11,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.8484848484848486) internal successors, (94), 26 states have internal predecessors, (94), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:43:11,373 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 445 transitions. [2022-02-24 04:43:11,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-02-24 04:43:11,373 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:43:11,373 INFO L514 BasicCegarLoop]: trace histogram [23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:43:11,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-02-24 04:43:11,373 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:43:11,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:43:11,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1972182685, now seen corresponding path program 23 times [2022-02-24 04:43:11,374 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:43:11,374 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [543771550] [2022-02-24 04:43:11,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:43:11,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:43:11,394 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:43:11,394 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:43:11,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:11,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:43:11,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:11,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:43:11,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:12,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:43:12,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:12,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:43:12,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:12,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:43:12,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:12,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:43:12,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:12,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 04:43:12,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:12,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-02-24 04:43:12,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:12,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-02-24 04:43:12,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:12,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-02-24 04:43:12,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:12,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-24 04:43:12,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:12,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 04:43:12,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:13,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:43:13,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:13,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:43:13,011 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:43:13,011 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [543771550] [2022-02-24 04:43:13,011 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [543771550] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:43:13,011 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:43:13,011 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-02-24 04:43:13,011 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761089045] [2022-02-24 04:43:13,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:43:13,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-24 04:43:13,011 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:43:13,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-24 04:43:13,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1024, Unknown=0, NotChecked=0, Total=1122 [2022-02-24 04:43:13,012 INFO L87 Difference]: Start difference. First operand 383 states and 445 transitions. Second operand has 34 states, 34 states have (on average 2.7941176470588234) internal successors, (95), 27 states have internal predecessors, (95), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:43:15,134 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:43:22,804 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:43:27,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:43:27,466 INFO L93 Difference]: Finished difference Result 721 states and 856 transitions. [2022-02-24 04:43:27,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-24 04:43:27,466 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.7941176470588234) internal successors, (95), 27 states have internal predecessors, (95), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 125 [2022-02-24 04:43:27,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:43:27,468 INFO L225 Difference]: With dead ends: 721 [2022-02-24 04:43:27,468 INFO L226 Difference]: Without dead ends: 435 [2022-02-24 04:43:27,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=373, Invalid=3409, Unknown=0, NotChecked=0, Total=3782 [2022-02-24 04:43:27,469 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 328 mSDsluCounter, 1175 mSDsCounter, 0 mSdLazyCounter, 3710 mSolverCounterSat, 262 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 1314 SdHoareTripleChecker+Invalid, 3973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 3710 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2022-02-24 04:43:27,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 1314 Invalid, 3973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 3710 Invalid, 1 Unknown, 0 Unchecked, 12.7s Time] [2022-02-24 04:43:27,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2022-02-24 04:43:27,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 385. [2022-02-24 04:43:27,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 310 states have (on average 1.196774193548387) internal successors, (371), 314 states have internal predecessors, (371), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-02-24 04:43:27,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 447 transitions. [2022-02-24 04:43:27,638 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 447 transitions. Word has length 125 [2022-02-24 04:43:27,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:43:27,638 INFO L470 AbstractCegarLoop]: Abstraction has 385 states and 447 transitions. [2022-02-24 04:43:27,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.7941176470588234) internal successors, (95), 27 states have internal predecessors, (95), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:43:27,638 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 447 transitions. [2022-02-24 04:43:27,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-02-24 04:43:27,639 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:43:27,639 INFO L514 BasicCegarLoop]: trace histogram [24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:43:27,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-02-24 04:43:27,639 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:43:27,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:43:27,639 INFO L85 PathProgramCache]: Analyzing trace with hash -101638895, now seen corresponding path program 24 times [2022-02-24 04:43:27,639 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:43:27,639 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437968486] [2022-02-24 04:43:27,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:43:27,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:43:27,684 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:43:27,684 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:43:27,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:28,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:43:28,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:28,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:43:28,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:28,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:43:28,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:28,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:43:28,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:28,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:43:28,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:28,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:43:28,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:28,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 04:43:28,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:29,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-24 04:43:29,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:29,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-02-24 04:43:29,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:29,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-02-24 04:43:29,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:29,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-02-24 04:43:29,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:29,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 04:43:29,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:29,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:43:29,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:29,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:43:29,124 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:43:29,124 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1437968486] [2022-02-24 04:43:29,127 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1437968486] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:43:29,127 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:43:29,127 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-02-24 04:43:29,127 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526845485] [2022-02-24 04:43:29,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:43:29,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-24 04:43:29,128 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:43:29,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-24 04:43:29,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1089, Unknown=0, NotChecked=0, Total=1190 [2022-02-24 04:43:29,129 INFO L87 Difference]: Start difference. First operand 385 states and 447 transitions. Second operand has 35 states, 35 states have (on average 2.742857142857143) internal successors, (96), 28 states have internal predecessors, (96), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:43:31,206 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:43:37,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:43:37,892 INFO L93 Difference]: Finished difference Result 723 states and 858 transitions. [2022-02-24 04:43:37,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-24 04:43:37,892 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.742857142857143) internal successors, (96), 28 states have internal predecessors, (96), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 126 [2022-02-24 04:43:37,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:43:37,893 INFO L225 Difference]: With dead ends: 723 [2022-02-24 04:43:37,893 INFO L226 Difference]: Without dead ends: 437 [2022-02-24 04:43:37,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=386, Invalid=3646, Unknown=0, NotChecked=0, Total=4032 [2022-02-24 04:43:37,894 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 200 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 1879 mSolverCounterSat, 177 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 2057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 1879 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-02-24 04:43:37,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 607 Invalid, 2057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 1879 Invalid, 1 Unknown, 0 Unchecked, 6.9s Time] [2022-02-24 04:43:37,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-02-24 04:43:38,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 387. [2022-02-24 04:43:38,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 312 states have (on average 1.1955128205128205) internal successors, (373), 316 states have internal predecessors, (373), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-02-24 04:43:38,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 449 transitions. [2022-02-24 04:43:38,060 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 449 transitions. Word has length 126 [2022-02-24 04:43:38,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:43:38,061 INFO L470 AbstractCegarLoop]: Abstraction has 387 states and 449 transitions. [2022-02-24 04:43:38,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.742857142857143) internal successors, (96), 28 states have internal predecessors, (96), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:43:38,061 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 449 transitions. [2022-02-24 04:43:38,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-02-24 04:43:38,061 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:43:38,061 INFO L514 BasicCegarLoop]: trace histogram [25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:43:38,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-02-24 04:43:38,062 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:43:38,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:43:38,062 INFO L85 PathProgramCache]: Analyzing trace with hash 34401565, now seen corresponding path program 25 times [2022-02-24 04:43:38,062 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:43:38,062 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [24007666] [2022-02-24 04:43:38,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:43:38,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:43:38,083 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:43:38,083 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:43:38,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:38,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:43:38,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:38,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:43:38,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:38,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:43:38,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:38,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:43:38,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:38,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:43:38,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:38,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:43:38,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:38,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 04:43:38,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:39,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-02-24 04:43:39,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:39,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-02-24 04:43:39,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:39,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-24 04:43:39,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:39,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-02-24 04:43:39,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:39,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 04:43:39,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:39,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:43:39,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:39,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:43:39,669 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:43:39,669 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [24007666] [2022-02-24 04:43:39,669 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [24007666] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:43:39,669 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:43:39,669 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-02-24 04:43:39,669 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002094026] [2022-02-24 04:43:39,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:43:39,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-24 04:43:39,669 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:43:39,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-24 04:43:39,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1156, Unknown=0, NotChecked=0, Total=1260 [2022-02-24 04:43:39,670 INFO L87 Difference]: Start difference. First operand 387 states and 449 transitions. Second operand has 36 states, 36 states have (on average 2.6944444444444446) internal successors, (97), 29 states have internal predecessors, (97), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:43:41,763 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:43:54,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:43:54,926 INFO L93 Difference]: Finished difference Result 725 states and 860 transitions. [2022-02-24 04:43:54,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-24 04:43:54,927 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.6944444444444446) internal successors, (97), 29 states have internal predecessors, (97), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 127 [2022-02-24 04:43:54,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:43:54,929 INFO L225 Difference]: With dead ends: 725 [2022-02-24 04:43:54,929 INFO L226 Difference]: Without dead ends: 439 [2022-02-24 04:43:54,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=399, Invalid=3891, Unknown=0, NotChecked=0, Total=4290 [2022-02-24 04:43:54,931 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 386 mSDsluCounter, 1081 mSDsCounter, 0 mSdLazyCounter, 3562 mSolverCounterSat, 329 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 1220 SdHoareTripleChecker+Invalid, 3892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 3562 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2022-02-24 04:43:54,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [389 Valid, 1220 Invalid, 3892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [329 Valid, 3562 Invalid, 1 Unknown, 0 Unchecked, 13.5s Time] [2022-02-24 04:43:54,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2022-02-24 04:43:55,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 389. [2022-02-24 04:43:55,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 314 states have (on average 1.194267515923567) internal successors, (375), 318 states have internal predecessors, (375), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-02-24 04:43:55,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 451 transitions. [2022-02-24 04:43:55,120 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 451 transitions. Word has length 127 [2022-02-24 04:43:55,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:43:55,120 INFO L470 AbstractCegarLoop]: Abstraction has 389 states and 451 transitions. [2022-02-24 04:43:55,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.6944444444444446) internal successors, (97), 29 states have internal predecessors, (97), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:43:55,128 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 451 transitions. [2022-02-24 04:43:55,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-02-24 04:43:55,129 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:43:55,129 INFO L514 BasicCegarLoop]: trace histogram [26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:43:55,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-02-24 04:43:55,130 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:43:55,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:43:55,130 INFO L85 PathProgramCache]: Analyzing trace with hash -43311471, now seen corresponding path program 26 times [2022-02-24 04:43:55,130 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:43:55,130 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [306146782] [2022-02-24 04:43:55,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:43:55,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:43:55,153 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:43:55,153 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:43:55,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:55,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:43:55,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:55,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:43:55,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:55,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:43:55,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:55,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:43:55,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:55,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:43:55,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:55,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:43:55,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:55,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 04:43:55,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:56,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-24 04:43:56,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:56,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-02-24 04:43:56,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:56,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-02-24 04:43:56,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:56,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-02-24 04:43:56,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:56,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 04:43:56,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:56,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:43:56,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:56,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:43:56,894 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:43:56,894 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [306146782] [2022-02-24 04:43:56,894 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [306146782] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:43:56,894 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:43:56,894 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-02-24 04:43:56,894 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150410285] [2022-02-24 04:43:56,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:43:56,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-24 04:43:56,894 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:43:56,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-24 04:43:56,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1225, Unknown=0, NotChecked=0, Total=1332 [2022-02-24 04:43:56,895 INFO L87 Difference]: Start difference. First operand 389 states and 451 transitions. Second operand has 37 states, 37 states have (on average 2.6486486486486487) internal successors, (98), 30 states have internal predecessors, (98), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:43:58,990 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:44:06,748 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 [] [2022-02-24 04:44:08,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:44:08,475 INFO L93 Difference]: Finished difference Result 727 states and 862 transitions. [2022-02-24 04:44:08,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-24 04:44:08,475 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.6486486486486487) internal successors, (98), 30 states have internal predecessors, (98), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 128 [2022-02-24 04:44:08,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:44:08,477 INFO L225 Difference]: With dead ends: 727 [2022-02-24 04:44:08,477 INFO L226 Difference]: Without dead ends: 441 [2022-02-24 04:44:08,477 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 556 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=412, Invalid=4144, Unknown=0, NotChecked=0, Total=4556 [2022-02-24 04:44:08,478 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 213 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 3098 mSolverCounterSat, 152 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 971 SdHoareTripleChecker+Invalid, 3251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 3098 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-02-24 04:44:08,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 971 Invalid, 3251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 3098 Invalid, 1 Unknown, 0 Unchecked, 9.5s Time] [2022-02-24 04:44:08,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-02-24 04:44:08,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 391. [2022-02-24 04:44:08,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 316 states have (on average 1.1930379746835442) internal successors, (377), 320 states have internal predecessors, (377), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-02-24 04:44:08,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 453 transitions. [2022-02-24 04:44:08,654 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 453 transitions. Word has length 128 [2022-02-24 04:44:08,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:44:08,654 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 453 transitions. [2022-02-24 04:44:08,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.6486486486486487) internal successors, (98), 30 states have internal predecessors, (98), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:44:08,654 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 453 transitions. [2022-02-24 04:44:08,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-02-24 04:44:08,655 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:44:08,655 INFO L514 BasicCegarLoop]: trace histogram [27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:44:08,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-02-24 04:44:08,655 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:44:08,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:44:08,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1842551709, now seen corresponding path program 27 times [2022-02-24 04:44:08,656 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:44:08,656 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160081849] [2022-02-24 04:44:08,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:44:08,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:44:08,678 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:44:08,679 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:44:08,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:44:09,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:44:09,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:44:09,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:44:09,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:44:09,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:44:09,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:44:09,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:44:09,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:44:09,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:44:09,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:44:09,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:44:09,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:44:09,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 04:44:09,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:44:10,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-02-24 04:44:10,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:44:10,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-02-24 04:44:10,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:44:10,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-02-24 04:44:10,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:44:10,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-02-24 04:44:10,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:44:10,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 04:44:10,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:44:10,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:44:10,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:44:10,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:44:10,166 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:44:10,177 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160081849] [2022-02-24 04:44:10,177 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1160081849] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:44:10,178 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:44:10,178 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2022-02-24 04:44:10,178 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615408693] [2022-02-24 04:44:10,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:44:10,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-24 04:44:10,178 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:44:10,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-24 04:44:10,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1296, Unknown=0, NotChecked=0, Total=1406 [2022-02-24 04:44:10,179 INFO L87 Difference]: Start difference. First operand 391 states and 453 transitions. Second operand has 38 states, 38 states have (on average 2.6052631578947367) internal successors, (99), 31 states have internal predecessors, (99), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:44:11,848 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:44:13,893 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:44:15,914 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:44:17,942 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:44:19,966 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:44:21,989 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:44:24,012 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:44:26,035 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:44:28,063 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:44:30,090 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:44:32,112 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:44:34,136 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:44:36,158 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:44:38,188 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:44:40,213 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:44:42,235 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:44:44,257 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:44:46,279 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:44:48,305 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:44:50,327 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:44:52,349 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:44:54,373 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:44:56,394 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:45:05,075 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:45:08,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:45:08,402 INFO L93 Difference]: Finished difference Result 729 states and 864 transitions. [2022-02-24 04:45:08,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-24 04:45:08,402 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.6052631578947367) internal successors, (99), 31 states have internal predecessors, (99), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 129 [2022-02-24 04:45:08,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:45:08,403 INFO L225 Difference]: With dead ends: 729 [2022-02-24 04:45:08,404 INFO L226 Difference]: Without dead ends: 443 [2022-02-24 04:45:08,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 590 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=425, Invalid=4405, Unknown=0, NotChecked=0, Total=4830 [2022-02-24 04:45:08,415 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 200 mSDsluCounter, 1126 mSDsCounter, 0 mSdLazyCounter, 3810 mSolverCounterSat, 189 mSolverCounterUnsat, 22 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 55.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 1265 SdHoareTripleChecker+Invalid, 4021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 3810 IncrementalHoareTripleChecker+Invalid, 22 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.0s IncrementalHoareTripleChecker+Time [2022-02-24 04:45:08,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 1265 Invalid, 4021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 3810 Invalid, 22 Unknown, 0 Unchecked, 56.0s Time] [2022-02-24 04:45:08,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2022-02-24 04:45:08,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 393. [2022-02-24 04:45:08,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 318 states have (on average 1.1918238993710693) internal successors, (379), 322 states have internal predecessors, (379), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-02-24 04:45:08,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 455 transitions. [2022-02-24 04:45:08,613 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 455 transitions. Word has length 129 [2022-02-24 04:45:08,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:45:08,613 INFO L470 AbstractCegarLoop]: Abstraction has 393 states and 455 transitions. [2022-02-24 04:45:08,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.6052631578947367) internal successors, (99), 31 states have internal predecessors, (99), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:45:08,613 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 455 transitions. [2022-02-24 04:45:08,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-02-24 04:45:08,614 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:45:08,614 INFO L514 BasicCegarLoop]: trace histogram [28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:45:08,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-02-24 04:45:08,614 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:45:08,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:45:08,614 INFO L85 PathProgramCache]: Analyzing trace with hash 174768145, now seen corresponding path program 28 times [2022-02-24 04:45:08,614 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:45:08,614 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [408040880] [2022-02-24 04:45:08,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:45:08,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:45:08,645 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:45:08,645 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:45:08,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:08,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:45:08,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:08,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:45:08,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:09,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:45:09,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:09,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:45:09,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:09,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:45:09,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:09,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:45:09,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:09,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 04:45:09,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:10,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-02-24 04:45:10,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:10,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-02-24 04:45:10,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:10,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-02-24 04:45:10,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:10,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-02-24 04:45:10,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:10,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 04:45:10,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:10,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:45:10,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:10,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:45:10,220 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:45:10,220 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [408040880] [2022-02-24 04:45:10,220 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [408040880] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:45:10,220 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:45:10,220 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2022-02-24 04:45:10,220 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854160726] [2022-02-24 04:45:10,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:45:10,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-24 04:45:10,220 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:45:10,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-24 04:45:10,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1369, Unknown=0, NotChecked=0, Total=1482 [2022-02-24 04:45:10,221 INFO L87 Difference]: Start difference. First operand 393 states and 455 transitions. Second operand has 39 states, 39 states have (on average 2.5641025641025643) internal successors, (100), 32 states have internal predecessors, (100), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:45:12,317 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:45:18,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:45:18,424 INFO L93 Difference]: Finished difference Result 731 states and 866 transitions. [2022-02-24 04:45:18,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-24 04:45:18,424 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.5641025641025643) internal successors, (100), 32 states have internal predecessors, (100), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 130 [2022-02-24 04:45:18,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:45:18,425 INFO L225 Difference]: With dead ends: 731 [2022-02-24 04:45:18,425 INFO L226 Difference]: Without dead ends: 445 [2022-02-24 04:45:18,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=438, Invalid=4674, Unknown=0, NotChecked=0, Total=5112 [2022-02-24 04:45:18,426 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 259 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 2311 mSolverCounterSat, 254 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 2566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 2311 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-02-24 04:45:18,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [262 Valid, 672 Invalid, 2566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 2311 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2022-02-24 04:45:18,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2022-02-24 04:45:18,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 395. [2022-02-24 04:45:18,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 320 states have (on average 1.190625) internal successors, (381), 324 states have internal predecessors, (381), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-02-24 04:45:18,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 457 transitions. [2022-02-24 04:45:18,598 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 457 transitions. Word has length 130 [2022-02-24 04:45:18,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:45:18,598 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 457 transitions. [2022-02-24 04:45:18,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.5641025641025643) internal successors, (100), 32 states have internal predecessors, (100), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:45:18,598 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 457 transitions. [2022-02-24 04:45:18,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-02-24 04:45:18,599 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:45:18,599 INFO L514 BasicCegarLoop]: trace histogram [29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:45:18,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-02-24 04:45:18,599 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:45:18,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:45:18,599 INFO L85 PathProgramCache]: Analyzing trace with hash 13085213, now seen corresponding path program 29 times [2022-02-24 04:45:18,599 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:45:18,599 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [351065714] [2022-02-24 04:45:18,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:45:18,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:45:18,638 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:45:18,639 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:45:18,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:18,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:45:18,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:19,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:45:19,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:19,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:45:19,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:19,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:45:19,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:19,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:45:19,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:19,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:45:19,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:19,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 04:45:19,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:20,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-02-24 04:45:20,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:20,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-02-24 04:45:20,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:20,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-02-24 04:45:20,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:20,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-02-24 04:45:20,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:20,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 04:45:20,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:20,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:45:20,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:20,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:45:20,285 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:45:20,285 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [351065714] [2022-02-24 04:45:20,285 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [351065714] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:45:20,285 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:45:20,285 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2022-02-24 04:45:20,285 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146477787] [2022-02-24 04:45:20,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:45:20,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-24 04:45:20,285 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:45:20,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-24 04:45:20,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1444, Unknown=0, NotChecked=0, Total=1560 [2022-02-24 04:45:20,286 INFO L87 Difference]: Start difference. First operand 395 states and 457 transitions. Second operand has 40 states, 40 states have (on average 2.525) internal successors, (101), 33 states have internal predecessors, (101), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:45:22,391 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:45:36,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:45:36,441 INFO L93 Difference]: Finished difference Result 733 states and 868 transitions. [2022-02-24 04:45:36,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-24 04:45:36,441 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.525) internal successors, (101), 33 states have internal predecessors, (101), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 131 [2022-02-24 04:45:36,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:45:36,443 INFO L225 Difference]: With dead ends: 733 [2022-02-24 04:45:36,443 INFO L226 Difference]: Without dead ends: 447 [2022-02-24 04:45:36,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 661 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=451, Invalid=4951, Unknown=0, NotChecked=0, Total=5402 [2022-02-24 04:45:36,444 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 143 mSDsluCounter, 1458 mSDsCounter, 0 mSdLazyCounter, 4932 mSolverCounterSat, 131 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 1597 SdHoareTripleChecker+Invalid, 5064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 4932 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.8s IncrementalHoareTripleChecker+Time [2022-02-24 04:45:36,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 1597 Invalid, 5064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 4932 Invalid, 1 Unknown, 0 Unchecked, 13.8s Time] [2022-02-24 04:45:36,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2022-02-24 04:45:36,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 397. [2022-02-24 04:45:36,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 322 states have (on average 1.18944099378882) internal successors, (383), 326 states have internal predecessors, (383), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-02-24 04:45:36,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 459 transitions. [2022-02-24 04:45:36,637 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 459 transitions. Word has length 131 [2022-02-24 04:45:36,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:45:36,637 INFO L470 AbstractCegarLoop]: Abstraction has 397 states and 459 transitions. [2022-02-24 04:45:36,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.525) internal successors, (101), 33 states have internal predecessors, (101), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:45:36,637 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 459 transitions. [2022-02-24 04:45:36,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-02-24 04:45:36,638 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:45:36,638 INFO L514 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:45:36,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-02-24 04:45:36,638 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:45:36,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:45:36,638 INFO L85 PathProgramCache]: Analyzing trace with hash -704118383, now seen corresponding path program 30 times [2022-02-24 04:45:36,638 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:45:36,638 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1232922327] [2022-02-24 04:45:36,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:45:36,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:45:36,665 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:45:36,665 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:45:36,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:37,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:45:37,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:37,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:45:37,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:37,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:45:37,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:37,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:45:37,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:37,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:45:37,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:37,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:45:37,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:37,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 04:45:37,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:38,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-02-24 04:45:38,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:38,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-24 04:45:38,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:38,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-02-24 04:45:38,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:38,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-02-24 04:45:38,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:38,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 04:45:38,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:38,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:45:38,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:38,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:45:38,413 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:45:38,413 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1232922327] [2022-02-24 04:45:38,414 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1232922327] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:45:38,414 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:45:38,414 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2022-02-24 04:45:38,414 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219896518] [2022-02-24 04:45:38,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:45:38,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-24 04:45:38,414 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:45:38,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-24 04:45:38,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1521, Unknown=0, NotChecked=0, Total=1640 [2022-02-24 04:45:38,415 INFO L87 Difference]: Start difference. First operand 397 states and 459 transitions. Second operand has 41 states, 41 states have (on average 2.4878048780487805) internal successors, (102), 34 states have internal predecessors, (102), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:45:40,522 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:45:55,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:45:55,040 INFO L93 Difference]: Finished difference Result 735 states and 870 transitions. [2022-02-24 04:45:55,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-24 04:45:55,040 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.4878048780487805) internal successors, (102), 34 states have internal predecessors, (102), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 132 [2022-02-24 04:45:55,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:45:55,043 INFO L225 Difference]: With dead ends: 735 [2022-02-24 04:45:55,044 INFO L226 Difference]: Without dead ends: 449 [2022-02-24 04:45:55,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 698 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=464, Invalid=5236, Unknown=0, NotChecked=0, Total=5700 [2022-02-24 04:45:55,053 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 271 mSDsluCounter, 1396 mSDsCounter, 0 mSdLazyCounter, 4765 mSolverCounterSat, 225 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 1535 SdHoareTripleChecker+Invalid, 4991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 4765 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2022-02-24 04:45:55,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 1535 Invalid, 4991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 4765 Invalid, 1 Unknown, 0 Unchecked, 14.1s Time] [2022-02-24 04:45:55,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2022-02-24 04:45:55,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 399. [2022-02-24 04:45:55,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 324 states have (on average 1.1882716049382716) internal successors, (385), 328 states have internal predecessors, (385), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-02-24 04:45:55,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 461 transitions. [2022-02-24 04:45:55,244 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 461 transitions. Word has length 132 [2022-02-24 04:45:55,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:45:55,244 INFO L470 AbstractCegarLoop]: Abstraction has 399 states and 461 transitions. [2022-02-24 04:45:55,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.4878048780487805) internal successors, (102), 34 states have internal predecessors, (102), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:45:55,244 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 461 transitions. [2022-02-24 04:45:55,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-02-24 04:45:55,252 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:45:55,252 INFO L514 BasicCegarLoop]: trace histogram [31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:45:55,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-02-24 04:45:55,252 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:45:55,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:45:55,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1462593379, now seen corresponding path program 31 times [2022-02-24 04:45:55,253 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:45:55,253 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1153280722] [2022-02-24 04:45:55,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:45:55,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:45:55,282 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:45:55,282 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:45:55,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:56,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:45:56,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:56,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:45:56,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:56,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:45:56,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:56,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:45:56,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:56,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:45:56,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:56,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:45:56,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:56,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 04:45:56,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:57,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-02-24 04:45:57,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:57,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-02-24 04:45:57,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:57,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-02-24 04:45:57,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:57,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-24 04:45:57,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:57,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 04:45:57,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:57,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:45:57,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:57,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:45:57,485 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:45:57,485 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1153280722] [2022-02-24 04:45:57,485 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1153280722] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:45:57,485 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:45:57,485 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2022-02-24 04:45:57,485 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666784708] [2022-02-24 04:45:57,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:45:57,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-02-24 04:45:57,486 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:45:57,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-02-24 04:45:57,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1600, Unknown=0, NotChecked=0, Total=1722 [2022-02-24 04:45:57,486 INFO L87 Difference]: Start difference. First operand 399 states and 461 transitions. Second operand has 42 states, 42 states have (on average 2.4523809523809526) internal successors, (103), 35 states have internal predecessors, (103), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:45:59,594 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:46:13,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:46:13,697 INFO L93 Difference]: Finished difference Result 737 states and 872 transitions. [2022-02-24 04:46:13,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-24 04:46:13,698 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.4523809523809526) internal successors, (103), 35 states have internal predecessors, (103), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 133 [2022-02-24 04:46:13,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:46:13,699 INFO L225 Difference]: With dead ends: 737 [2022-02-24 04:46:13,699 INFO L226 Difference]: Without dead ends: 451 [2022-02-24 04:46:13,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 736 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=477, Invalid=5529, Unknown=0, NotChecked=0, Total=6006 [2022-02-24 04:46:13,700 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 258 mSDsluCounter, 1487 mSDsCounter, 0 mSdLazyCounter, 5001 mSolverCounterSat, 265 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 1626 SdHoareTripleChecker+Invalid, 5267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 5001 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.8s IncrementalHoareTripleChecker+Time [2022-02-24 04:46:13,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 1626 Invalid, 5267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 5001 Invalid, 1 Unknown, 0 Unchecked, 13.8s Time] [2022-02-24 04:46:13,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2022-02-24 04:46:13,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 401. [2022-02-24 04:46:13,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 326 states have (on average 1.187116564417178) internal successors, (387), 330 states have internal predecessors, (387), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-02-24 04:46:13,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 463 transitions. [2022-02-24 04:46:13,898 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 463 transitions. Word has length 133 [2022-02-24 04:46:13,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:46:13,898 INFO L470 AbstractCegarLoop]: Abstraction has 401 states and 463 transitions. [2022-02-24 04:46:13,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.4523809523809526) internal successors, (103), 35 states have internal predecessors, (103), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:46:13,898 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 463 transitions. [2022-02-24 04:46:13,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-02-24 04:46:13,899 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:46:13,899 INFO L514 BasicCegarLoop]: trace histogram [32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:46:13,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-02-24 04:46:13,899 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:46:13,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:46:13,899 INFO L85 PathProgramCache]: Analyzing trace with hash 794485521, now seen corresponding path program 32 times [2022-02-24 04:46:13,899 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:46:13,899 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [125575367] [2022-02-24 04:46:13,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:46:13,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:46:13,926 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:46:13,926 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:46:14,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:46:14,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:46:14,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:46:14,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:46:14,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:46:14,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:46:14,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:46:14,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:46:14,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:46:14,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:46:14,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:46:14,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:46:14,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:46:14,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 04:46:14,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:46:15,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-24 04:46:15,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:46:15,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-02-24 04:46:15,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:46:15,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-02-24 04:46:15,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:46:15,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-02-24 04:46:15,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:46:15,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 04:46:15,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:46:15,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:46:15,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:46:15,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:46:15,682 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:46:15,682 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [125575367] [2022-02-24 04:46:15,682 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [125575367] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:46:15,682 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:46:15,682 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2022-02-24 04:46:15,682 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901411748] [2022-02-24 04:46:15,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:46:15,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-02-24 04:46:15,683 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:46:15,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-02-24 04:46:15,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1681, Unknown=0, NotChecked=0, Total=1806 [2022-02-24 04:46:15,683 INFO L87 Difference]: Start difference. First operand 401 states and 463 transitions. Second operand has 43 states, 43 states have (on average 2.4186046511627906) internal successors, (104), 36 states have internal predecessors, (104), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:46:17,756 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:46:22,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:46:22,544 INFO L93 Difference]: Finished difference Result 739 states and 874 transitions. [2022-02-24 04:46:22,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-24 04:46:22,545 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.4186046511627906) internal successors, (104), 36 states have internal predecessors, (104), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 134 [2022-02-24 04:46:22,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:46:22,546 INFO L225 Difference]: With dead ends: 739 [2022-02-24 04:46:22,546 INFO L226 Difference]: Without dead ends: 453 [2022-02-24 04:46:22,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 775 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=490, Invalid=5830, Unknown=0, NotChecked=0, Total=6320 [2022-02-24 04:46:22,547 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 270 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 1791 mSolverCounterSat, 230 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 2022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 1791 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-02-24 04:46:22,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 389 Invalid, 2022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 1791 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2022-02-24 04:46:22,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2022-02-24 04:46:22,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 403. [2022-02-24 04:46:22,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 328 states have (on average 1.1859756097560976) internal successors, (389), 332 states have internal predecessors, (389), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-02-24 04:46:22,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 465 transitions. [2022-02-24 04:46:22,734 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 465 transitions. Word has length 134 [2022-02-24 04:46:22,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:46:22,734 INFO L470 AbstractCegarLoop]: Abstraction has 403 states and 465 transitions. [2022-02-24 04:46:22,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.4186046511627906) internal successors, (104), 36 states have internal predecessors, (104), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:46:22,734 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 465 transitions. [2022-02-24 04:46:22,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-02-24 04:46:22,734 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:46:22,734 INFO L514 BasicCegarLoop]: trace histogram [33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:46:22,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-02-24 04:46:22,735 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:46:22,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:46:22,735 INFO L85 PathProgramCache]: Analyzing trace with hash 2044454685, now seen corresponding path program 33 times [2022-02-24 04:46:22,735 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:46:22,735 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2004563238] [2022-02-24 04:46:22,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:46:22,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:46:22,765 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:46:22,765 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:46:22,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:46:23,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:46:23,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:46:23,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:46:23,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:46:23,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:46:23,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:46:23,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:46:23,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:46:23,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:46:23,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:46:23,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:46:23,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:46:23,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 04:46:23,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:46:24,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-02-24 04:46:24,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:46:24,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-02-24 04:46:24,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:46:24,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-24 04:46:24,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:46:24,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-02-24 04:46:24,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:46:24,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 04:46:24,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:46:24,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:46:24,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:46:24,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:46:24,564 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:46:24,564 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2004563238] [2022-02-24 04:46:24,565 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2004563238] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:46:24,565 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:46:24,565 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2022-02-24 04:46:24,565 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110825717] [2022-02-24 04:46:24,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:46:24,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-02-24 04:46:24,565 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:46:24,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-02-24 04:46:24,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1764, Unknown=0, NotChecked=0, Total=1892 [2022-02-24 04:46:24,566 INFO L87 Difference]: Start difference. First operand 403 states and 465 transitions. Second operand has 44 states, 44 states have (on average 2.3863636363636362) internal successors, (105), 37 states have internal predecessors, (105), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:46:26,644 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:46:33,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:46:33,793 INFO L93 Difference]: Finished difference Result 741 states and 876 transitions. [2022-02-24 04:46:33,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-02-24 04:46:33,794 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.3863636363636362) internal successors, (105), 37 states have internal predecessors, (105), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 135 [2022-02-24 04:46:33,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:46:33,795 INFO L225 Difference]: With dead ends: 741 [2022-02-24 04:46:33,795 INFO L226 Difference]: Without dead ends: 455 [2022-02-24 04:46:33,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 815 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=503, Invalid=6139, Unknown=0, NotChecked=0, Total=6642 [2022-02-24 04:46:33,796 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 142 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 2270 mSolverCounterSat, 138 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 2409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 2270 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-02-24 04:46:33,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 513 Invalid, 2409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 2270 Invalid, 1 Unknown, 0 Unchecked, 6.5s Time] [2022-02-24 04:46:33,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2022-02-24 04:46:33,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 405. [2022-02-24 04:46:33,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 330 states have (on average 1.1848484848484848) internal successors, (391), 334 states have internal predecessors, (391), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-02-24 04:46:33,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 467 transitions. [2022-02-24 04:46:34,000 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 467 transitions. Word has length 135 [2022-02-24 04:46:34,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:46:34,000 INFO L470 AbstractCegarLoop]: Abstraction has 405 states and 467 transitions. [2022-02-24 04:46:34,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.3863636363636362) internal successors, (105), 37 states have internal predecessors, (105), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:46:34,000 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 467 transitions. [2022-02-24 04:46:34,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-02-24 04:46:34,001 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:46:34,001 INFO L514 BasicCegarLoop]: trace histogram [34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:46:34,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-02-24 04:46:34,001 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:46:34,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:46:34,001 INFO L85 PathProgramCache]: Analyzing trace with hash 2138793105, now seen corresponding path program 34 times [2022-02-24 04:46:34,001 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:46:34,001 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1363344905] [2022-02-24 04:46:34,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:46:34,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:46:34,029 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:46:34,029 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:46:34,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:46:34,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:46:34,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:46:34,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:46:34,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:46:34,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:46:34,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:46:34,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:46:34,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:46:34,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:46:34,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:46:34,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:46:34,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:46:34,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 04:46:34,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:46:35,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-02-24 04:46:35,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:46:35,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-02-24 04:46:35,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:46:35,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-02-24 04:46:35,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:46:35,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-02-24 04:46:35,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:46:36,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 04:46:36,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:46:36,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:46:36,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:46:36,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:46:36,025 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:46:36,025 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1363344905] [2022-02-24 04:46:36,025 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1363344905] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:46:36,025 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:46:36,025 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2022-02-24 04:46:36,025 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409101545] [2022-02-24 04:46:36,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:46:36,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-02-24 04:46:36,026 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:46:36,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-02-24 04:46:36,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1849, Unknown=0, NotChecked=0, Total=1980 [2022-02-24 04:46:36,026 INFO L87 Difference]: Start difference. First operand 405 states and 467 transitions. Second operand has 45 states, 45 states have (on average 2.3555555555555556) internal successors, (106), 38 states have internal predecessors, (106), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:46:38,155 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:46:54,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:46:54,013 INFO L93 Difference]: Finished difference Result 743 states and 878 transitions. [2022-02-24 04:46:54,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-02-24 04:46:54,013 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 [2022-02-24 04:46:54,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:46:54,015 INFO L225 Difference]: With dead ends: 743 [2022-02-24 04:46:54,015 INFO L226 Difference]: Without dead ends: 457 [2022-02-24 04:46:54,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 856 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=516, Invalid=6456, Unknown=0, NotChecked=0, Total=6972 [2022-02-24 04:46:54,016 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 200 mSDsluCounter, 1517 mSDsCounter, 0 mSdLazyCounter, 5351 mSolverCounterSat, 207 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 1656 SdHoareTripleChecker+Invalid, 5559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 5351 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2022-02-24 04:46:54,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 1656 Invalid, 5559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 5351 Invalid, 1 Unknown, 0 Unchecked, 15.6s Time] [2022-02-24 04:46:54,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2022-02-24 04:46:54,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 407. [2022-02-24 04:46:54,205 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) [2022-02-24 04:46:54,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 469 transitions. [2022-02-24 04:46:54,205 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 469 transitions. Word has length 136 [2022-02-24 04:46:54,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:46:54,205 INFO L470 AbstractCegarLoop]: Abstraction has 407 states and 469 transitions. [2022-02-24 04:46:54,205 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) [2022-02-24 04:46:54,205 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 469 transitions. [2022-02-24 04:46:54,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-02-24 04:46:54,206 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:46:54,206 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] [2022-02-24 04:46:54,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-02-24 04:46:54,206 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:46:54,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:46:54,207 INFO L85 PathProgramCache]: Analyzing trace with hash 768316829, now seen corresponding path program 35 times [2022-02-24 04:46:54,207 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:46:54,207 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [902789508] [2022-02-24 04:46:54,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:46:54,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:46:54,232 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:46:54,232 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:46:54,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:46:54,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:46:54,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:46:54,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:46:54,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:46:54,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:46:54,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:46:54,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:46:54,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:46:54,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:46:54,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:46:54,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:46:54,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:46:54,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 04:46:54,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:46:56,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-02-24 04:46:56,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:46:56,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-02-24 04:46:56,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:46:56,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-02-24 04:46:56,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:46:56,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-02-24 04:46:56,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:46:56,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 04:46:56,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:46:56,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:46:56,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:46:56,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:46:56,355 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:46:56,355 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [902789508] [2022-02-24 04:46:56,355 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [902789508] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:46:56,355 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:46:56,355 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-02-24 04:46:56,355 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345840206] [2022-02-24 04:46:56,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:46:56,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-02-24 04:46:56,355 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:46:56,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-02-24 04:46:56,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1936, Unknown=0, NotChecked=0, Total=2070 [2022-02-24 04:46:56,356 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) [2022-02-24 04:46:58,442 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:47:04,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:47:04,238 INFO L93 Difference]: Finished difference Result 745 states and 880 transitions. [2022-02-24 04:47:04,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-02-24 04:47:04,238 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 [2022-02-24 04:47:04,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:47:04,239 INFO L225 Difference]: With dead ends: 745 [2022-02-24 04:47:04,239 INFO L226 Difference]: Without dead ends: 459 [2022-02-24 04:47:04,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 898 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=529, Invalid=6781, Unknown=0, NotChecked=0, Total=7310 [2022-02-24 04:47:04,240 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 200 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 2263 mSolverCounterSat, 212 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 2476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 2263 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-02-24 04:47:04,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 498 Invalid, 2476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 2263 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2022-02-24 04:47:04,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2022-02-24 04:47:04,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 409. [2022-02-24 04:47:04,440 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) [2022-02-24 04:47:04,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 471 transitions. [2022-02-24 04:47:04,441 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 471 transitions. Word has length 137 [2022-02-24 04:47:04,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:47:04,441 INFO L470 AbstractCegarLoop]: Abstraction has 409 states and 471 transitions. [2022-02-24 04:47:04,441 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) [2022-02-24 04:47:04,441 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 471 transitions. [2022-02-24 04:47:04,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-02-24 04:47:04,442 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:47:04,442 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] [2022-02-24 04:47:04,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-02-24 04:47:04,442 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:47:04,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:47:04,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1233225233, now seen corresponding path program 36 times [2022-02-24 04:47:04,442 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:47:04,442 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [943690762] [2022-02-24 04:47:04,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:47:04,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:47:04,469 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:47:04,469 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:47:05,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:47:05,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:47:05,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:47:05,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:47:05,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:47:05,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:47:05,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:47:05,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:47:05,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:47:05,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:47:05,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:47:05,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:47:05,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:47:05,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 04:47:05,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:47:06,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-02-24 04:47:06,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:47:06,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-02-24 04:47:06,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:47:06,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-02-24 04:47:06,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:47:06,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-02-24 04:47:06,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:47:06,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 04:47:06,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:47:06,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:47:06,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:47:06,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:47:06,847 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:47:06,847 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [943690762] [2022-02-24 04:47:06,848 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [943690762] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:47:06,848 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:47:06,848 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [] total 47 [2022-02-24 04:47:06,848 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608552223] [2022-02-24 04:47:06,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:47:06,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-24 04:47:06,848 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:47:06,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-24 04:47:06,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=2025, Unknown=0, NotChecked=0, Total=2162 [2022-02-24 04:47:06,849 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) [2022-02-24 04:47:08,924 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:47:16,676 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:47:23,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:47:23,731 INFO L93 Difference]: Finished difference Result 747 states and 882 transitions. [2022-02-24 04:47:23,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-02-24 04:47:23,732 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 [2022-02-24 04:47:23,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:47:23,733 INFO L225 Difference]: With dead ends: 747 [2022-02-24 04:47:23,733 INFO L226 Difference]: Without dead ends: 461 [2022-02-24 04:47:23,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 941 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=542, Invalid=7114, Unknown=0, NotChecked=0, Total=7656 [2022-02-24 04:47:23,734 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 143 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 3904 mSolverCounterSat, 144 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 4049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 3904 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2022-02-24 04:47:23,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 1016 Invalid, 4049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 3904 Invalid, 1 Unknown, 0 Unchecked, 13.9s Time] [2022-02-24 04:47:23,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2022-02-24 04:47:23,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 411. [2022-02-24 04:47:23,954 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) [2022-02-24 04:47:23,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 473 transitions. [2022-02-24 04:47:23,954 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 473 transitions. Word has length 138 [2022-02-24 04:47:23,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:47:23,954 INFO L470 AbstractCegarLoop]: Abstraction has 411 states and 473 transitions. [2022-02-24 04:47:23,955 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) [2022-02-24 04:47:23,955 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 473 transitions. [2022-02-24 04:47:23,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-02-24 04:47:23,955 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:47:23,955 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] [2022-02-24 04:47:23,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-02-24 04:47:23,956 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:47:23,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:47:23,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1534483427, now seen corresponding path program 37 times [2022-02-24 04:47:23,956 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:47:23,956 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2073626532] [2022-02-24 04:47:23,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:47:23,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:47:23,987 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:47:23,987 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:47:24,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:47:24,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:47:24,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:47:24,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:47:24,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:47:24,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:47:24,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:47:24,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:47:24,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:47:24,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:47:24,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:47:24,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:47:24,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:47:24,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 04:47:24,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:47:25,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-02-24 04:47:25,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:47:25,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-02-24 04:47:25,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:47:25,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-02-24 04:47:25,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:47:26,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-02-24 04:47:26,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:47:26,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 04:47:26,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:47:26,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:47:26,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:47:26,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:47:26,104 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:47:26,104 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2073626532] [2022-02-24 04:47:26,104 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2073626532] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:47:26,104 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:47:26,104 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2022-02-24 04:47:26,104 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824821970] [2022-02-24 04:47:26,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:47:26,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-24 04:47:26,105 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:47:26,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-24 04:47:26,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=2116, Unknown=0, NotChecked=0, Total=2256 [2022-02-24 04:47:26,105 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) [2022-02-24 04:47:28,206 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:47:37,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:47:37,295 INFO L93 Difference]: Finished difference Result 749 states and 884 transitions. [2022-02-24 04:47:37,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-02-24 04:47:37,295 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 139 [2022-02-24 04:47:37,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:47:37,297 INFO L225 Difference]: With dead ends: 749 [2022-02-24 04:47:37,297 INFO L226 Difference]: Without dead ends: 463 [2022-02-24 04:47:37,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 985 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=555, Invalid=7455, Unknown=0, NotChecked=0, Total=8010 [2022-02-24 04:47:37,298 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 143 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 3156 mSolverCounterSat, 146 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 3303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 3156 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-02-24 04:47:37,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 719 Invalid, 3303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 3156 Invalid, 1 Unknown, 0 Unchecked, 8.1s Time] [2022-02-24 04:47:37,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2022-02-24 04:47:37,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 413. [2022-02-24 04:47:37,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 338 states have (on average 1.180473372781065) internal successors, (399), 342 states have internal predecessors, (399), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-02-24 04:47:37,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 475 transitions. [2022-02-24 04:47:37,526 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 475 transitions. Word has length 139 [2022-02-24 04:47:37,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:47:37,526 INFO L470 AbstractCegarLoop]: Abstraction has 413 states and 475 transitions. [2022-02-24 04:47:37,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2022-02-24 04:47:37,526 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 475 transitions. [2022-02-24 04:47:37,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-02-24 04:47:37,527 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:47:37,527 INFO L514 BasicCegarLoop]: trace histogram [38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:47:37,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-02-24 04:47:37,527 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:47:37,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:47:37,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1434105967, now seen corresponding path program 38 times [2022-02-24 04:47:37,527 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:47:37,527 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1418016941] [2022-02-24 04:47:37,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:47:37,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:47:37,561 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:47:37,561 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:47:37,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:47:38,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:47:38,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:47:38,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:47:38,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:47:38,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:47:38,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:47:38,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:47:38,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:47:38,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:47:38,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:47:38,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:47:38,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:47:38,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 04:47:38,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:47:39,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-02-24 04:47:39,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:47:39,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-24 04:47:39,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:47:39,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-02-24 04:47:39,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:47:39,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-02-24 04:47:39,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:47:40,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 04:47:40,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:47:40,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:47:40,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:47:40,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:47:40,016 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:47:40,016 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1418016941] [2022-02-24 04:47:40,016 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1418016941] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:47:40,016 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:47:40,016 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49 [2022-02-24 04:47:40,016 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329086701] [2022-02-24 04:47:40,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:47:40,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-02-24 04:47:40,017 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:47:40,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-02-24 04:47:40,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=2209, Unknown=0, NotChecked=0, Total=2352 [2022-02-24 04:47:40,018 INFO L87 Difference]: Start difference. First operand 413 states and 475 transitions. Second operand has 49 states, 49 states have (on average 2.2448979591836733) internal successors, (110), 42 states have internal predecessors, (110), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:47:42,104 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:47:48,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:47:48,301 INFO L93 Difference]: Finished difference Result 751 states and 886 transitions. [2022-02-24 04:47:48,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-02-24 04:47:48,301 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.2448979591836733) internal successors, (110), 42 states have internal predecessors, (110), 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 140 [2022-02-24 04:47:48,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:47:48,303 INFO L225 Difference]: With dead ends: 751 [2022-02-24 04:47:48,303 INFO L226 Difference]: Without dead ends: 465 [2022-02-24 04:47:48,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1030 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=568, Invalid=7804, Unknown=0, NotChecked=0, Total=8372 [2022-02-24 04:47:48,304 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 266 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 2133 mSolverCounterSat, 248 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 2382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 2133 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-02-24 04:47:48,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [269 Valid, 345 Invalid, 2382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 2133 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2022-02-24 04:47:48,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2022-02-24 04:47:48,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 415. [2022-02-24 04:47:48,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 340 states have (on average 1.1794117647058824) internal successors, (401), 344 states have internal predecessors, (401), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-02-24 04:47:48,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 477 transitions. [2022-02-24 04:47:48,529 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 477 transitions. Word has length 140 [2022-02-24 04:47:48,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:47:48,530 INFO L470 AbstractCegarLoop]: Abstraction has 415 states and 477 transitions. [2022-02-24 04:47:48,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.2448979591836733) internal successors, (110), 42 states have internal predecessors, (110), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:47:48,530 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 477 transitions. [2022-02-24 04:47:48,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-02-24 04:47:48,530 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:47:48,530 INFO L514 BasicCegarLoop]: trace histogram [39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:47:48,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-02-24 04:47:48,531 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:47:48,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:47:48,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1677595293, now seen corresponding path program 39 times [2022-02-24 04:47:48,531 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:47:48,531 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [465817645] [2022-02-24 04:47:48,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:47:48,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:47:48,562 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:47:48,562 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:47:48,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:47:49,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:47:49,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:47:49,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:47:49,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:47:49,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:47:49,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:47:49,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:47:49,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:47:49,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:47:49,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:47:49,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:47:49,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:47:49,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 04:47:49,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:47:50,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-02-24 04:47:50,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:47:50,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-02-24 04:47:50,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:47:50,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-02-24 04:47:50,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:47:50,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-24 04:47:50,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:47:50,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 04:47:50,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:47:50,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:47:50,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:47:50,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:47:50,867 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:47:50,867 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [465817645] [2022-02-24 04:47:50,867 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [465817645] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:47:50,867 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:47:50,867 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [50] imperfect sequences [] total 50 [2022-02-24 04:47:50,867 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251615389] [2022-02-24 04:47:50,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:47:50,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-02-24 04:47:50,867 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:47:50,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-02-24 04:47:50,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=2304, Unknown=0, NotChecked=0, Total=2450 [2022-02-24 04:47:50,868 INFO L87 Difference]: Start difference. First operand 415 states and 477 transitions. Second operand has 50 states, 50 states have (on average 2.22) internal successors, (111), 43 states have internal predecessors, (111), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:47:52,986 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:48:03,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:48:03,024 INFO L93 Difference]: Finished difference Result 753 states and 888 transitions. [2022-02-24 04:48:03,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-02-24 04:48:03,024 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.22) internal successors, (111), 43 states have internal predecessors, (111), 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 141 [2022-02-24 04:48:03,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:48:03,025 INFO L225 Difference]: With dead ends: 753 [2022-02-24 04:48:03,025 INFO L226 Difference]: Without dead ends: 467 [2022-02-24 04:48:03,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1076 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=581, Invalid=8161, Unknown=0, NotChecked=0, Total=8742 [2022-02-24 04:48:03,026 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 271 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 3476 mSolverCounterSat, 250 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 3727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 3476 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-02-24 04:48:03,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 798 Invalid, 3727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 3476 Invalid, 1 Unknown, 0 Unchecked, 9.0s Time] [2022-02-24 04:48:03,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2022-02-24 04:48:03,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 417. [2022-02-24 04:48:03,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 342 states have (on average 1.1783625730994152) internal successors, (403), 346 states have internal predecessors, (403), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-02-24 04:48:03,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 479 transitions. [2022-02-24 04:48:03,235 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 479 transitions. Word has length 141 [2022-02-24 04:48:03,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:48:03,235 INFO L470 AbstractCegarLoop]: Abstraction has 417 states and 479 transitions. [2022-02-24 04:48:03,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.22) internal successors, (111), 43 states have internal predecessors, (111), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:48:03,235 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 479 transitions. [2022-02-24 04:48:03,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-02-24 04:48:03,236 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:48:03,236 INFO L514 BasicCegarLoop]: trace histogram [40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:48:03,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-02-24 04:48:03,236 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:48:03,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:48:03,236 INFO L85 PathProgramCache]: Analyzing trace with hash -643913455, now seen corresponding path program 40 times [2022-02-24 04:48:03,236 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:48:03,236 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872468988] [2022-02-24 04:48:03,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:48:03,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:48:03,267 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:48:03,268 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:48:03,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:48:03,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:48:03,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:48:03,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:48:03,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:48:03,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:48:03,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:48:03,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:48:03,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:48:03,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:48:03,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:48:03,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:48:03,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:48:03,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 04:48:03,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:48:05,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-24 04:48:05,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:48:05,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-02-24 04:48:05,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:48:05,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-02-24 04:48:05,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:48:05,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-02-24 04:48:05,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:48:05,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 04:48:05,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:48:05,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:48:05,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:48:05,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:48:05,573 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:48:05,573 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872468988] [2022-02-24 04:48:05,573 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [872468988] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:48:05,573 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:48:05,573 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [] total 51 [2022-02-24 04:48:05,573 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350404423] [2022-02-24 04:48:05,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:48:05,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-02-24 04:48:05,574 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:48:05,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-02-24 04:48:05,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=2401, Unknown=0, NotChecked=0, Total=2550 [2022-02-24 04:48:05,574 INFO L87 Difference]: Start difference. First operand 417 states and 479 transitions. Second operand has 51 states, 51 states have (on average 2.196078431372549) internal successors, (112), 44 states have internal predecessors, (112), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:48:07,674 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:48:19,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:48:19,466 INFO L93 Difference]: Finished difference Result 755 states and 890 transitions. [2022-02-24 04:48:19,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-02-24 04:48:19,467 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.196078431372549) internal successors, (112), 44 states have internal predecessors, (112), 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 142 [2022-02-24 04:48:19,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:48:19,468 INFO L225 Difference]: With dead ends: 755 [2022-02-24 04:48:19,468 INFO L226 Difference]: Without dead ends: 469 [2022-02-24 04:48:19,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1123 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=594, Invalid=8526, Unknown=0, NotChecked=0, Total=9120 [2022-02-24 04:48:19,469 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 324 mSDsluCounter, 1193 mSDsCounter, 0 mSdLazyCounter, 4941 mSolverCounterSat, 328 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 1332 SdHoareTripleChecker+Invalid, 5270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 328 IncrementalHoareTripleChecker+Valid, 4941 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2022-02-24 04:48:19,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [327 Valid, 1332 Invalid, 5270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [328 Valid, 4941 Invalid, 1 Unknown, 0 Unchecked, 10.5s Time] [2022-02-24 04:48:19,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2022-02-24 04:48:19,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 419. [2022-02-24 04:48:19,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 344 states have (on average 1.177325581395349) internal successors, (405), 348 states have internal predecessors, (405), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-02-24 04:48:19,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 481 transitions. [2022-02-24 04:48:19,677 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 481 transitions. Word has length 142 [2022-02-24 04:48:19,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:48:19,677 INFO L470 AbstractCegarLoop]: Abstraction has 419 states and 481 transitions. [2022-02-24 04:48:19,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.196078431372549) internal successors, (112), 44 states have internal predecessors, (112), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:48:19,677 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 481 transitions. [2022-02-24 04:48:19,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-02-24 04:48:19,677 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:48:19,678 INFO L514 BasicCegarLoop]: trace histogram [41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:48:19,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-02-24 04:48:19,678 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:48:19,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:48:19,678 INFO L85 PathProgramCache]: Analyzing trace with hash 403759389, now seen corresponding path program 41 times [2022-02-24 04:48:19,678 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:48:19,678 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562330500] [2022-02-24 04:48:19,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:48:19,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:48:19,710 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:48:19,710 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:48:20,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:48:20,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:48:20,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:48:20,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:48:20,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:48:20,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:48:20,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:48:20,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:48:20,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:48:20,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:48:20,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:48:20,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:48:20,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:48:20,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 04:48:20,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:48:21,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-02-24 04:48:21,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:48:21,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-02-24 04:48:21,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:48:21,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-24 04:48:21,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:48:22,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-02-24 04:48:22,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:48:22,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 04:48:22,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:48:22,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:48:22,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:48:22,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:48:22,078 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:48:22,078 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [562330500] [2022-02-24 04:48:22,078 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [562330500] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:48:22,078 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:48:22,078 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-02-24 04:48:22,078 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93930885] [2022-02-24 04:48:22,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:48:22,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-02-24 04:48:22,079 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:48:22,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-02-24 04:48:22,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=2500, Unknown=0, NotChecked=0, Total=2652 [2022-02-24 04:48:22,080 INFO L87 Difference]: Start difference. First operand 419 states and 481 transitions. Second operand has 52 states, 52 states have (on average 2.173076923076923) internal successors, (113), 45 states have internal predecessors, (113), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:48:24,178 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:48:37,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:48:37,019 INFO L93 Difference]: Finished difference Result 757 states and 892 transitions. [2022-02-24 04:48:37,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-02-24 04:48:37,020 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.173076923076923) internal successors, (113), 45 states have internal predecessors, (113), 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 143 [2022-02-24 04:48:37,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:48:37,028 INFO L225 Difference]: With dead ends: 757 [2022-02-24 04:48:37,028 INFO L226 Difference]: Without dead ends: 471 [2022-02-24 04:48:37,029 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1171 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=607, Invalid=8899, Unknown=0, NotChecked=0, Total=9506 [2022-02-24 04:48:37,032 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 271 mSDsluCounter, 1114 mSDsCounter, 0 mSdLazyCounter, 4832 mSolverCounterSat, 258 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 5091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 4832 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2022-02-24 04:48:37,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 1253 Invalid, 5091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 4832 Invalid, 1 Unknown, 0 Unchecked, 11.5s Time] [2022-02-24 04:48:37,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2022-02-24 04:48:37,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 421. [2022-02-24 04:48:37,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 346 states have (on average 1.176300578034682) internal successors, (407), 350 states have internal predecessors, (407), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-02-24 04:48:37,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 483 transitions. [2022-02-24 04:48:37,262 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 483 transitions. Word has length 143 [2022-02-24 04:48:37,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:48:37,262 INFO L470 AbstractCegarLoop]: Abstraction has 421 states and 483 transitions. [2022-02-24 04:48:37,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.173076923076923) internal successors, (113), 45 states have internal predecessors, (113), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:48:37,263 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 483 transitions. [2022-02-24 04:48:37,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-02-24 04:48:37,263 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:48:37,263 INFO L514 BasicCegarLoop]: trace histogram [42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:48:37,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-02-24 04:48:37,263 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:48:37,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:48:37,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1478120815, now seen corresponding path program 42 times [2022-02-24 04:48:37,264 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:48:37,264 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1391880114] [2022-02-24 04:48:37,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:48:37,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:48:37,297 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:48:37,297 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:48:38,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:48:38,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:48:38,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:48:38,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:48:38,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:48:38,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:48:38,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:48:38,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:48:38,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:48:38,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:48:38,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:48:38,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:48:38,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:48:38,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 04:48:38,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:48:39,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-02-24 04:48:39,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:48:39,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-02-24 04:48:39,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:48:39,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-02-24 04:48:39,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:48:40,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-02-24 04:48:40,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:48:40,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 04:48:40,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:48:40,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:48:40,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:48:40,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:48:40,057 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:48:40,057 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1391880114] [2022-02-24 04:48:40,057 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1391880114] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:48:40,057 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:48:40,057 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2022-02-24 04:48:40,057 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061208891] [2022-02-24 04:48:40,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:48:40,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-02-24 04:48:40,057 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:48:40,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-02-24 04:48:40,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=2601, Unknown=0, NotChecked=0, Total=2756 [2022-02-24 04:48:40,058 INFO L87 Difference]: Start difference. First operand 421 states and 483 transitions. Second operand has 53 states, 53 states have (on average 2.150943396226415) internal successors, (114), 46 states have internal predecessors, (114), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:48:42,172 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:48:52,103 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:48:58,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:48:58,710 INFO L93 Difference]: Finished difference Result 759 states and 894 transitions. [2022-02-24 04:48:58,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-02-24 04:48:58,710 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.150943396226415) internal successors, (114), 46 states have internal predecessors, (114), 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 144 [2022-02-24 04:48:58,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:48:58,712 INFO L225 Difference]: With dead ends: 759 [2022-02-24 04:48:58,712 INFO L226 Difference]: Without dead ends: 473 [2022-02-24 04:48:58,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1220 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=620, Invalid=9280, Unknown=0, NotChecked=0, Total=9900 [2022-02-24 04:48:58,713 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 270 mSDsluCounter, 1316 mSDsCounter, 0 mSdLazyCounter, 5403 mSolverCounterSat, 260 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 1455 SdHoareTripleChecker+Invalid, 5664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 5403 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.3s IncrementalHoareTripleChecker+Time [2022-02-24 04:48:58,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 1455 Invalid, 5664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 5403 Invalid, 1 Unknown, 0 Unchecked, 15.3s Time] [2022-02-24 04:48:58,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2022-02-24 04:48:58,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 423. [2022-02-24 04:48:58,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 348 states have (on average 1.1752873563218391) internal successors, (409), 352 states have internal predecessors, (409), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-02-24 04:48:58,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 485 transitions. [2022-02-24 04:48:58,930 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 485 transitions. Word has length 144 [2022-02-24 04:48:58,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:48:58,930 INFO L470 AbstractCegarLoop]: Abstraction has 423 states and 485 transitions. [2022-02-24 04:48:58,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.150943396226415) internal successors, (114), 46 states have internal predecessors, (114), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:48:58,930 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 485 transitions. [2022-02-24 04:48:58,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-02-24 04:48:58,931 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:48:58,931 INFO L514 BasicCegarLoop]: trace histogram [43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:48:58,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-02-24 04:48:58,931 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:48:58,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:48:58,931 INFO L85 PathProgramCache]: Analyzing trace with hash 313135005, now seen corresponding path program 43 times [2022-02-24 04:48:58,931 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:48:58,931 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [51665574] [2022-02-24 04:48:58,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:48:58,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:48:58,964 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:48:58,964 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:48:59,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:48:59,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:48:59,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:48:59,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:48:59,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:48:59,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:48:59,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:48:59,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:48:59,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:48:59,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:48:59,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:48:59,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:48:59,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:48:59,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 04:48:59,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:49:01,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-02-24 04:49:01,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:49:01,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-02-24 04:49:01,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:49:01,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-02-24 04:49:01,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:49:01,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-02-24 04:49:01,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:49:01,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 04:49:01,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:49:01,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:49:01,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:49:01,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:49:01,681 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:49:01,682 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [51665574] [2022-02-24 04:49:01,682 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [51665574] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:49:01,682 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:49:01,682 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54 [2022-02-24 04:49:01,682 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039210368] [2022-02-24 04:49:01,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:49:01,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-24 04:49:01,682 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:49:01,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-24 04:49:01,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=2704, Unknown=0, NotChecked=0, Total=2862 [2022-02-24 04:49:01,683 INFO L87 Difference]: Start difference. First operand 423 states and 485 transitions. Second operand has 54 states, 54 states have (on average 2.1296296296296298) internal successors, (115), 47 states have internal predecessors, (115), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:49:03,785 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:49:17,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:49:17,169 INFO L93 Difference]: Finished difference Result 761 states and 896 transitions. [2022-02-24 04:49:17,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-02-24 04:49:17,169 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.1296296296296298) internal successors, (115), 47 states have internal predecessors, (115), 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 145 [2022-02-24 04:49:17,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:49:17,170 INFO L225 Difference]: With dead ends: 761 [2022-02-24 04:49:17,170 INFO L226 Difference]: Without dead ends: 475 [2022-02-24 04:49:17,171 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1270 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=633, Invalid=9669, Unknown=0, NotChecked=0, Total=10302 [2022-02-24 04:49:17,172 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 312 mSDsluCounter, 988 mSDsCounter, 0 mSdLazyCounter, 4641 mSolverCounterSat, 393 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 5035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 393 IncrementalHoareTripleChecker+Valid, 4641 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2022-02-24 04:49:17,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 1127 Invalid, 5035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [393 Valid, 4641 Invalid, 1 Unknown, 0 Unchecked, 11.6s Time] [2022-02-24 04:49:17,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2022-02-24 04:49:17,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 425. [2022-02-24 04:49:17,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 350 states have (on average 1.1742857142857144) internal successors, (411), 354 states have internal predecessors, (411), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-02-24 04:49:17,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 487 transitions. [2022-02-24 04:49:17,407 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 487 transitions. Word has length 145 [2022-02-24 04:49:17,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:49:17,407 INFO L470 AbstractCegarLoop]: Abstraction has 425 states and 487 transitions. [2022-02-24 04:49:17,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.1296296296296298) internal successors, (115), 47 states have internal predecessors, (115), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:49:17,407 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 487 transitions. [2022-02-24 04:49:17,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-02-24 04:49:17,408 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:49:17,408 INFO L514 BasicCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:49:17,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-02-24 04:49:17,408 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:49:17,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:49:17,408 INFO L85 PathProgramCache]: Analyzing trace with hash 7490577, now seen corresponding path program 44 times [2022-02-24 04:49:17,408 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:49:17,408 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997994664] [2022-02-24 04:49:17,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:49:17,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:49:17,447 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:49:17,447 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:49:17,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:49:17,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:49:17,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:49:17,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:49:17,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:49:17,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:49:17,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:49:17,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:49:17,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:49:17,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:49:18,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:49:18,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:49:18,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:49:18,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 04:49:18,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:49:19,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-02-24 04:49:19,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:49:19,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-02-24 04:49:19,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:49:19,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-02-24 04:49:19,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:49:19,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-02-24 04:49:19,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:49:20,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 04:49:20,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:49:20,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:49:20,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:49:20,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:49:20,056 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:49:20,056 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1997994664] [2022-02-24 04:49:20,056 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1997994664] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:49:20,057 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:49:20,057 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [] total 55 [2022-02-24 04:49:20,057 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855402945] [2022-02-24 04:49:20,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:49:20,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-24 04:49:20,057 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:49:20,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-24 04:49:20,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=2809, Unknown=0, NotChecked=0, Total=2970 [2022-02-24 04:49:20,058 INFO L87 Difference]: Start difference. First operand 425 states and 487 transitions. Second operand has 55 states, 55 states have (on average 2.109090909090909) internal successors, (116), 48 states have internal predecessors, (116), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:49:22,172 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:49:38,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:49:38,077 INFO L93 Difference]: Finished difference Result 763 states and 898 transitions. [2022-02-24 04:49:38,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-02-24 04:49:38,077 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.109090909090909) internal successors, (116), 48 states have internal predecessors, (116), 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 146 [2022-02-24 04:49:38,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:49:38,078 INFO L225 Difference]: With dead ends: 763 [2022-02-24 04:49:38,079 INFO L226 Difference]: Without dead ends: 477 [2022-02-24 04:49:38,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1321 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=646, Invalid=10066, Unknown=0, NotChecked=0, Total=10712 [2022-02-24 04:49:38,080 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 200 mSDsluCounter, 1220 mSDsCounter, 0 mSdLazyCounter, 5353 mSolverCounterSat, 239 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 1359 SdHoareTripleChecker+Invalid, 5593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 5353 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time [2022-02-24 04:49:38,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 1359 Invalid, 5593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 5353 Invalid, 1 Unknown, 0 Unchecked, 14.2s Time] [2022-02-24 04:49:38,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2022-02-24 04:49:38,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 427. [2022-02-24 04:49:38,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 352 states have (on average 1.1732954545454546) internal successors, (413), 356 states have internal predecessors, (413), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-02-24 04:49:38,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 489 transitions. [2022-02-24 04:49:38,372 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 489 transitions. Word has length 146 [2022-02-24 04:49:38,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:49:38,372 INFO L470 AbstractCegarLoop]: Abstraction has 427 states and 489 transitions. [2022-02-24 04:49:38,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.109090909090909) internal successors, (116), 48 states have internal predecessors, (116), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:49:38,372 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 489 transitions. [2022-02-24 04:49:38,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-02-24 04:49:38,373 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:49:38,374 INFO L514 BasicCegarLoop]: trace histogram [45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:49:38,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-02-24 04:49:38,374 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:49:38,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:49:38,375 INFO L85 PathProgramCache]: Analyzing trace with hash -877552099, now seen corresponding path program 45 times [2022-02-24 04:49:38,375 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:49:38,375 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [799398912] [2022-02-24 04:49:38,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:49:38,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:49:38,416 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:49:38,416 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:49:38,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:49:38,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:49:38,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:49:38,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:49:38,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:49:38,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:49:39,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:49:39,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:49:39,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:49:39,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:49:39,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:49:39,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:49:39,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:49:39,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 04:49:39,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:49:40,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-02-24 04:49:40,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:49:41,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-02-24 04:49:41,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:49:41,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-02-24 04:49:41,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:49:41,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-02-24 04:49:41,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:49:41,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 04:49:41,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:49:41,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:49:41,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:49:41,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:49:41,170 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:49:41,170 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [799398912] [2022-02-24 04:49:41,171 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [799398912] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:49:41,171 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:49:41,171 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [] total 56 [2022-02-24 04:49:41,171 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418681768] [2022-02-24 04:49:41,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:49:41,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-02-24 04:49:41,171 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:49:41,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-02-24 04:49:41,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=2916, Unknown=0, NotChecked=0, Total=3080 [2022-02-24 04:49:41,172 INFO L87 Difference]: Start difference. First operand 427 states and 489 transitions. Second operand has 56 states, 56 states have (on average 2.0892857142857144) internal successors, (117), 49 states have internal predecessors, (117), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:49:43,259 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:49:52,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:49:52,079 INFO L93 Difference]: Finished difference Result 765 states and 900 transitions. [2022-02-24 04:49:52,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-02-24 04:49:52,079 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.0892857142857144) internal successors, (117), 49 states have internal predecessors, (117), 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 147 [2022-02-24 04:49:52,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:49:52,093 INFO L225 Difference]: With dead ends: 765 [2022-02-24 04:49:52,093 INFO L226 Difference]: Without dead ends: 479 [2022-02-24 04:49:52,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1373 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=659, Invalid=10471, Unknown=0, NotChecked=0, Total=11130 [2022-02-24 04:49:52,095 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 201 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 3511 mSolverCounterSat, 243 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 3755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 3511 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-02-24 04:49:52,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 625 Invalid, 3755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 3511 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2022-02-24 04:49:52,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2022-02-24 04:49:52,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 429. [2022-02-24 04:49:52,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 354 states have (on average 1.1723163841807909) internal successors, (415), 358 states have internal predecessors, (415), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-02-24 04:49:52,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 491 transitions. [2022-02-24 04:49:52,333 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 491 transitions. Word has length 147 [2022-02-24 04:49:52,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:49:52,333 INFO L470 AbstractCegarLoop]: Abstraction has 429 states and 491 transitions. [2022-02-24 04:49:52,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.0892857142857144) internal successors, (117), 49 states have internal predecessors, (117), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:49:52,341 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 491 transitions. [2022-02-24 04:49:52,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-02-24 04:49:52,342 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:49:52,342 INFO L514 BasicCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:49:52,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-02-24 04:49:52,346 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:49:52,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:49:52,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1750896017, now seen corresponding path program 46 times [2022-02-24 04:49:52,346 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:49:52,346 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [59850364] [2022-02-24 04:49:52,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:49:52,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:49:52,382 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:49:52,383 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:49:52,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:49:52,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:49:52,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:49:52,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:49:52,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:49:52,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:49:52,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:49:52,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:49:52,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:49:52,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:49:52,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:49:53,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:49:53,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:49:53,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 04:49:53,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:49:54,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-02-24 04:49:54,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:49:55,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-24 04:49:55,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:49:55,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-02-24 04:49:55,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:49:55,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-02-24 04:49:55,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:49:55,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 04:49:55,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:49:55,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:49:55,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:49:55,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:49:55,214 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:49:55,214 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [59850364] [2022-02-24 04:49:55,214 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [59850364] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:49:55,214 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:49:55,215 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [] total 57 [2022-02-24 04:49:55,215 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478181432] [2022-02-24 04:49:55,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:49:55,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-02-24 04:49:55,215 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:49:55,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-02-24 04:49:55,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=3025, Unknown=0, NotChecked=0, Total=3192 [2022-02-24 04:49:55,216 INFO L87 Difference]: Start difference. First operand 429 states and 491 transitions. Second operand has 57 states, 57 states have (on average 2.0701754385964914) internal successors, (118), 50 states have internal predecessors, (118), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:49:57,315 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:50:04,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:50:04,778 INFO L93 Difference]: Finished difference Result 767 states and 902 transitions. [2022-02-24 04:50:04,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-02-24 04:50:04,778 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.0701754385964914) internal successors, (118), 50 states have internal predecessors, (118), 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 148 [2022-02-24 04:50:04,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:50:04,780 INFO L225 Difference]: With dead ends: 767 [2022-02-24 04:50:04,780 INFO L226 Difference]: Without dead ends: 481 [2022-02-24 04:50:04,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1426 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=672, Invalid=10884, Unknown=0, NotChecked=0, Total=11556 [2022-02-24 04:50:04,781 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 328 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 3191 mSolverCounterSat, 352 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 3544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 352 IncrementalHoareTripleChecker+Valid, 3191 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-02-24 04:50:04,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 483 Invalid, 3544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [352 Valid, 3191 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2022-02-24 04:50:04,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2022-02-24 04:50:05,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 431. [2022-02-24 04:50:05,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 356 states have (on average 1.1713483146067416) internal successors, (417), 360 states have internal predecessors, (417), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-02-24 04:50:05,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 493 transitions. [2022-02-24 04:50:05,027 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 493 transitions. Word has length 148 [2022-02-24 04:50:05,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:50:05,027 INFO L470 AbstractCegarLoop]: Abstraction has 431 states and 493 transitions. [2022-02-24 04:50:05,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 2.0701754385964914) internal successors, (118), 50 states have internal predecessors, (118), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:50:05,027 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 493 transitions. [2022-02-24 04:50:05,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-02-24 04:50:05,028 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:50:05,028 INFO L514 BasicCegarLoop]: trace histogram [47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:50:05,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-02-24 04:50:05,028 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:50:05,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:50:05,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1628408989, now seen corresponding path program 47 times [2022-02-24 04:50:05,028 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:50:05,029 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [776246151] [2022-02-24 04:50:05,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:50:05,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:50:05,067 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:50:05,067 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:50:05,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:50:06,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:50:06,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:50:06,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:50:06,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:50:06,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:50:06,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:50:06,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:50:06,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:50:06,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:50:06,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:50:06,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:50:06,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:50:06,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 04:50:06,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:50:08,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-02-24 04:50:08,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:50:08,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-02-24 04:50:08,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:50:08,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-02-24 04:50:08,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:50:08,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-24 04:50:08,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:50:08,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 04:50:08,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:50:08,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:50:08,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:50:08,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:50:08,575 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:50:08,575 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [776246151] [2022-02-24 04:50:08,575 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [776246151] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:50:08,575 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:50:08,575 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [] total 58 [2022-02-24 04:50:08,575 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468077538] [2022-02-24 04:50:08,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:50:08,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-02-24 04:50:08,575 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:50:08,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-02-24 04:50:08,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=3136, Unknown=0, NotChecked=0, Total=3306 [2022-02-24 04:50:08,576 INFO L87 Difference]: Start difference. First operand 431 states and 493 transitions. Second operand has 58 states, 58 states have (on average 2.0517241379310347) internal successors, (119), 51 states have internal predecessors, (119), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:50:10,709 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:50:24,992 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:50:31,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:50:31,020 INFO L93 Difference]: Finished difference Result 769 states and 904 transitions. [2022-02-24 04:50:31,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-02-24 04:50:31,021 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.0517241379310347) internal successors, (119), 51 states have internal predecessors, (119), 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 149 [2022-02-24 04:50:31,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:50:31,022 INFO L225 Difference]: With dead ends: 769 [2022-02-24 04:50:31,022 INFO L226 Difference]: Without dead ends: 483 [2022-02-24 04:50:31,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1480 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=685, Invalid=11305, Unknown=0, NotChecked=0, Total=11990 [2022-02-24 04:50:31,023 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 270 mSDsluCounter, 1566 mSDsCounter, 0 mSdLazyCounter, 6564 mSolverCounterSat, 275 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 1705 SdHoareTripleChecker+Invalid, 6840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 6564 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.2s IncrementalHoareTripleChecker+Time [2022-02-24 04:50:31,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 1705 Invalid, 6840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 6564 Invalid, 1 Unknown, 0 Unchecked, 18.2s Time] [2022-02-24 04:50:31,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-02-24 04:50:31,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 433. [2022-02-24 04:50:31,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 358 states have (on average 1.170391061452514) internal successors, (419), 362 states have internal predecessors, (419), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-02-24 04:50:31,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 495 transitions. [2022-02-24 04:50:31,271 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 495 transitions. Word has length 149 [2022-02-24 04:50:31,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:50:31,271 INFO L470 AbstractCegarLoop]: Abstraction has 433 states and 495 transitions. [2022-02-24 04:50:31,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 2.0517241379310347) internal successors, (119), 51 states have internal predecessors, (119), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:50:31,271 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 495 transitions. [2022-02-24 04:50:31,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-02-24 04:50:31,272 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:50:31,272 INFO L514 BasicCegarLoop]: trace histogram [48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:50:31,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-02-24 04:50:31,272 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:50:31,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:50:31,272 INFO L85 PathProgramCache]: Analyzing trace with hash 2126278417, now seen corresponding path program 48 times [2022-02-24 04:50:31,272 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:50:31,272 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [411127806] [2022-02-24 04:50:31,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:50:31,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:50:31,309 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:50:31,309 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:50:31,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:50:31,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:50:31,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:50:31,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:50:31,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:50:31,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:50:31,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:50:31,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:50:31,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:50:31,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:50:31,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:50:31,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:50:31,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:50:31,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 04:50:32,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:50:34,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-24 04:50:34,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:50:34,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-02-24 04:50:34,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:50:34,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-02-24 04:50:34,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:50:34,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-02-24 04:50:34,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:50:34,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 04:50:34,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:50:34,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:50:34,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:50:34,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:50:34,318 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:50:34,318 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [411127806] [2022-02-24 04:50:34,318 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [411127806] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:50:34,318 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:50:34,318 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [] total 59 [2022-02-24 04:50:34,318 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898770938] [2022-02-24 04:50:34,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:50:34,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-02-24 04:50:34,319 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:50:34,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-02-24 04:50:34,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=3249, Unknown=0, NotChecked=0, Total=3422 [2022-02-24 04:50:34,320 INFO L87 Difference]: Start difference. First operand 433 states and 495 transitions. Second operand has 59 states, 59 states have (on average 2.0338983050847457) internal successors, (120), 52 states have internal predecessors, (120), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:50:36,471 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:50:54,241 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:50:58,964 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:51:02,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:51:02,852 INFO L93 Difference]: Finished difference Result 771 states and 906 transitions. [2022-02-24 04:51:02,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-02-24 04:51:02,852 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.0338983050847457) internal successors, (120), 52 states have internal predecessors, (120), 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 150 [2022-02-24 04:51:02,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:51:02,853 INFO L225 Difference]: With dead ends: 771 [2022-02-24 04:51:02,853 INFO L226 Difference]: Without dead ends: 485 [2022-02-24 04:51:02,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1535 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=698, Invalid=11734, Unknown=0, NotChecked=0, Total=12432 [2022-02-24 04:51:02,854 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 254 mSDsluCounter, 1975 mSDsCounter, 0 mSdLazyCounter, 7777 mSolverCounterSat, 334 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 2114 SdHoareTripleChecker+Invalid, 8112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 334 IncrementalHoareTripleChecker+Valid, 7777 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.2s IncrementalHoareTripleChecker+Time [2022-02-24 04:51:02,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 2114 Invalid, 8112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [334 Valid, 7777 Invalid, 1 Unknown, 0 Unchecked, 24.2s Time] [2022-02-24 04:51:02,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2022-02-24 04:51:03,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 435. [2022-02-24 04:51:03,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 360 states have (on average 1.1694444444444445) internal successors, (421), 364 states have internal predecessors, (421), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-02-24 04:51:03,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 497 transitions. [2022-02-24 04:51:03,115 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 497 transitions. Word has length 150 [2022-02-24 04:51:03,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:51:03,115 INFO L470 AbstractCegarLoop]: Abstraction has 435 states and 497 transitions. [2022-02-24 04:51:03,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.0338983050847457) internal successors, (120), 52 states have internal predecessors, (120), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:51:03,115 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 497 transitions. [2022-02-24 04:51:03,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-02-24 04:51:03,116 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:51:03,116 INFO L514 BasicCegarLoop]: trace histogram [49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:51:03,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-02-24 04:51:03,116 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:51:03,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:51:03,116 INFO L85 PathProgramCache]: Analyzing trace with hash 380361501, now seen corresponding path program 49 times [2022-02-24 04:51:03,116 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:51:03,116 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [416375790] [2022-02-24 04:51:03,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:51:03,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:51:03,155 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:51:03,155 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:51:03,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:51:03,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:51:03,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:51:03,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:51:03,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:51:03,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:51:03,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:51:03,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:51:03,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:51:03,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:51:03,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:51:03,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:51:03,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:51:03,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 04:51:03,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:51:05,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-02-24 04:51:05,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:51:05,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-02-24 04:51:05,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:51:05,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-24 04:51:05,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:51:06,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-02-24 04:51:06,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:51:06,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 04:51:06,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:51:06,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:51:06,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:51:06,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:51:06,069 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:51:06,069 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [416375790] [2022-02-24 04:51:06,069 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [416375790] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:51:06,069 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:51:06,069 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [60] imperfect sequences [] total 60 [2022-02-24 04:51:06,069 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835408308] [2022-02-24 04:51:06,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:51:06,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-02-24 04:51:06,071 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:51:06,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-02-24 04:51:06,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=3364, Unknown=0, NotChecked=0, Total=3540 [2022-02-24 04:51:06,072 INFO L87 Difference]: Start difference. First operand 435 states and 497 transitions. Second operand has 60 states, 60 states have (on average 2.0166666666666666) internal successors, (121), 53 states have internal predecessors, (121), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-02-24 04:51:08,169 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []