/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/ntdrivers/floppy.i.cil-3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-6c470ae [2022-02-15 03:00:39,206 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-15 03:00:39,208 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-15 03:00:39,273 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-15 03:00:39,283 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-15 03:00:39,287 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-15 03:00:39,287 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-15 03:00:39,288 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-15 03:00:39,288 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-15 03:00:39,289 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-15 03:00:39,290 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-15 03:00:39,291 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-15 03:00:39,291 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-15 03:00:39,294 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-15 03:00:39,297 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-15 03:00:39,298 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-15 03:00:39,302 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-15 03:00:39,306 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-15 03:00:39,307 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-15 03:00:39,307 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-15 03:00:39,309 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-02-15 03:00:39,319 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-15 03:00:39,319 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-15 03:00:39,321 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-15 03:00:39,321 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-15 03:00:39,321 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-15 03:00:39,321 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-15 03:00:39,321 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-15 03:00:39,321 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-15 03:00:39,321 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-15 03:00:39,321 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-15 03:00:39,322 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-15 03:00:39,322 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-15 03:00:39,322 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-15 03:00:39,322 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-15 03:00:39,322 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-15 03:00:39,322 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-15 03:00:39,323 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-15 03:00:39,323 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-15 03:00:39,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 03:00:39,323 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-15 03:00:39,323 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-15 03:00:39,323 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-15 03:00:39,323 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-02-15 03:00:39,323 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-15 03:00:39,487 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-15 03:00:39,505 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-15 03:00:39,507 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-15 03:00:39,508 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-15 03:00:39,509 INFO L275 PluginConnector]: CDTParser initialized [2022-02-15 03:00:39,510 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers/floppy.i.cil-3.c [2022-02-15 03:00:39,559 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76c21bc04/17f2dcf8160f49a0a30e5e5f8a64102e/FLAG578f233cc [2022-02-15 03:00:40,145 INFO L306 CDTParser]: Found 1 translation units. [2022-02-15 03:00:40,145 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/floppy.i.cil-3.c [2022-02-15 03:00:40,193 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76c21bc04/17f2dcf8160f49a0a30e5e5f8a64102e/FLAG578f233cc [2022-02-15 03:00:40,588 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76c21bc04/17f2dcf8160f49a0a30e5e5f8a64102e [2022-02-15 03:00:40,590 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-15 03:00:40,591 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-15 03:00:40,593 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-15 03:00:40,593 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-15 03:00:40,596 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-15 03:00:40,596 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 03:00:40" (1/1) ... [2022-02-15 03:00:40,597 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69c6e091 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 03:00:40, skipping insertion in model container [2022-02-15 03:00:40,597 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 03:00:40" (1/1) ... [2022-02-15 03:00:40,612 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-15 03:00:40,695 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-15 03:00:41,137 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/floppy.i.cil-3.c[77246,77259] [2022-02-15 03:00:41,372 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 03:00:41,426 INFO L203 MainTranslator]: Completed pre-run [2022-02-15 03:00:41,470 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/floppy.i.cil-3.c[77246,77259] [2022-02-15 03:00:41,660 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 03:00:41,699 INFO L208 MainTranslator]: Completed translation [2022-02-15 03:00:41,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 03:00:41 WrapperNode [2022-02-15 03:00:41,700 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-15 03:00:41,701 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-15 03:00:41,701 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-15 03:00:41,701 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-15 03:00:41,710 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 03:00:41" (1/1) ... [2022-02-15 03:00:41,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 03:00:41" (1/1) ... [2022-02-15 03:00:41,775 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 03:00:41" (1/1) ... [2022-02-15 03:00:41,775 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 03:00:41" (1/1) ... [2022-02-15 03:00:41,871 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 03:00:41" (1/1) ... [2022-02-15 03:00:41,888 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 03:00:41" (1/1) ... [2022-02-15 03:00:41,904 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 03:00:41" (1/1) ... [2022-02-15 03:00:41,928 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-15 03:00:41,929 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-15 03:00:41,929 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-15 03:00:41,929 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-15 03:00:41,929 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 03:00:41" (1/1) ... [2022-02-15 03:00:41,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 03:00:41,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 03:00:41,949 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-15 03:00:41,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-15 03:00:41,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-15 03:00:41,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-15 03:00:41,974 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-15 03:00:41,974 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_guard [2022-02-15 03:00:41,974 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedExchange [2022-02-15 03:00:41,974 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-02-15 03:00:41,974 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-02-15 03:00:41,974 INFO L138 BoogieDeclarations]: Found implementation of procedure DriverEntry [2022-02-15 03:00:41,974 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyUnload [2022-02-15 03:00:41,974 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyAddDevice [2022-02-15 03:00:41,975 INFO L138 BoogieDeclarations]: Found implementation of procedure FlConfigCallBack [2022-02-15 03:00:41,975 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAcpiConfigureFloppy [2022-02-15 03:00:41,975 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2022-02-15 03:00:41,975 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2022-02-15 03:00:41,976 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyDeviceControl [2022-02-15 03:00:41,977 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnp [2022-02-15 03:00:41,977 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyStartDevice [2022-02-15 03:00:41,977 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2022-02-15 03:00:41,977 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPower [2022-02-15 03:00:41,978 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyReadWrite [2022-02-15 03:00:41,978 INFO L138 BoogieDeclarations]: Found implementation of procedure FlInterpretError [2022-02-15 03:00:41,978 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFinishOperation [2022-02-15 03:00:41,978 INFO L138 BoogieDeclarations]: Found implementation of procedure FlStartDrive [2022-02-15 03:00:41,978 INFO L138 BoogieDeclarations]: Found implementation of procedure FlDatarateSpecifyConfigure [2022-02-15 03:00:41,978 INFO L138 BoogieDeclarations]: Found implementation of procedure FlRecalibrateDrive [2022-02-15 03:00:41,978 INFO L138 BoogieDeclarations]: Found implementation of procedure FlDetermineMediaType [2022-02-15 03:00:41,979 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAllocateIoBuffer [2022-02-15 03:00:41,979 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFreeIoBuffer [2022-02-15 03:00:41,979 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyThread [2022-02-15 03:00:41,979 INFO L138 BoogieDeclarations]: Found implementation of procedure FlConsolidateMediaTypeWithBootSector [2022-02-15 03:00:41,979 INFO L138 BoogieDeclarations]: Found implementation of procedure FlCheckBootSector [2022-02-15 03:00:41,979 INFO L138 BoogieDeclarations]: Found implementation of procedure FlReadWriteTrack [2022-02-15 03:00:41,979 INFO L138 BoogieDeclarations]: Found implementation of procedure FlReadWrite [2022-02-15 03:00:41,979 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFormat [2022-02-15 03:00:41,979 INFO L138 BoogieDeclarations]: Found implementation of procedure FlCheckFormatParameters [2022-02-15 03:00:41,979 INFO L138 BoogieDeclarations]: Found implementation of procedure FlIssueCommand [2022-02-15 03:00:41,979 INFO L138 BoogieDeclarations]: Found implementation of procedure FlInitializeControllerHardware [2022-02-15 03:00:41,979 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2022-02-15 03:00:41,979 INFO L138 BoogieDeclarations]: Found implementation of procedure FlHdbit [2022-02-15 03:00:41,979 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyQueueRequest [2022-02-15 03:00:41,979 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCancelQueuedRequest [2022-02-15 03:00:41,979 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2022-02-15 03:00:41,980 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-02-15 03:00:41,980 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-15 03:00:41,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAcquireFastMutex [2022-02-15 03:00:41,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ExReleaseFastMutex [2022-02-15 03:00:41,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2022-02-15 03:00:41,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ExFreePool [2022-02-15 03:00:41,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertHeadList [2022-02-15 03:00:41,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertTailList [2022-02-15 03:00:41,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedRemoveHeadList [2022-02-15 03:00:41,980 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAllocateMdl [2022-02-15 03:00:41,980 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAttachDeviceToDeviceStack [2022-02-15 03:00:41,980 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildAsynchronousFsdRequest [2022-02-15 03:00:41,980 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2022-02-15 03:00:41,980 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateDevice [2022-02-15 03:00:41,980 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateSymbolicLink [2022-02-15 03:00:41,980 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteDevice [2022-02-15 03:00:41,981 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2022-02-15 03:00:41,981 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDetachDevice [2022-02-15 03:00:41,981 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeIrp [2022-02-15 03:00:41,981 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeMdl [2022-02-15 03:00:41,981 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2022-02-15 03:00:41,981 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2022-02-15 03:00:41,981 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2022-02-15 03:00:41,981 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReleaseCancelSpinLock [2022-02-15 03:00:41,981 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-02-15 03:00:41,981 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetHardErrorOrVerifyDevice [2022-02-15 03:00:41,981 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-02-15 03:00:41,981 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-02-15 03:00:41,981 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-02-15 03:00:41,981 INFO L138 BoogieDeclarations]: Found implementation of procedure KeAcquireSpinLockRaiseToDpc [2022-02-15 03:00:41,981 INFO L138 BoogieDeclarations]: Found implementation of procedure KeDelayExecutionThread [2022-02-15 03:00:41,982 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeEvent [2022-02-15 03:00:41,982 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSemaphore [2022-02-15 03:00:41,982 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSpinLock [2022-02-15 03:00:41,982 INFO L138 BoogieDeclarations]: Found implementation of procedure KeReleaseSemaphore [2022-02-15 03:00:41,982 INFO L138 BoogieDeclarations]: Found implementation of procedure KfReleaseSpinLock [2022-02-15 03:00:41,982 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-02-15 03:00:41,982 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-02-15 03:00:41,982 INFO L138 BoogieDeclarations]: Found implementation of procedure MmAllocateContiguousMemory [2022-02-15 03:00:41,983 INFO L138 BoogieDeclarations]: Found implementation of procedure MmFreeContiguousMemory [2022-02-15 03:00:41,983 INFO L138 BoogieDeclarations]: Found implementation of procedure MmMapLockedPagesSpecifyCache [2022-02-15 03:00:41,983 INFO L138 BoogieDeclarations]: Found implementation of procedure MmPageEntireDriver [2022-02-15 03:00:41,983 INFO L138 BoogieDeclarations]: Found implementation of procedure MmResetDriverPaging [2022-02-15 03:00:41,984 INFO L138 BoogieDeclarations]: Found implementation of procedure MmUnlockPages [2022-02-15 03:00:41,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2022-02-15 03:00:41,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ObfDereferenceObject [2022-02-15 03:00:41,984 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-02-15 03:00:41,984 INFO L138 BoogieDeclarations]: Found implementation of procedure PoStartNextPowerIrp [2022-02-15 03:00:41,984 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2022-02-15 03:00:41,984 INFO L138 BoogieDeclarations]: Found implementation of procedure PsTerminateSystemThread [2022-02-15 03:00:41,984 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlAnsiStringToUnicodeString [2022-02-15 03:00:41,985 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCompareMemory [2022-02-15 03:00:41,985 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCopyUnicodeString [2022-02-15 03:00:41,985 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlDeleteRegistryValue [2022-02-15 03:00:41,985 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlFreeUnicodeString [2022-02-15 03:00:41,985 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitString [2022-02-15 03:00:41,985 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitUnicodeString [2022-02-15 03:00:41,985 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlQueryRegistryValues [2022-02-15 03:00:41,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-02-15 03:00:41,985 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-02-15 03:00:41,985 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-02-15 03:00:41,985 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-02-15 03:00:41,985 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-15 03:00:41,985 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-15 03:00:41,985 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-15 03:00:41,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-15 03:00:41,986 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-02-15 03:00:41,986 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-02-15 03:00:41,986 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-15 03:00:41,986 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-02-15 03:00:41,987 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_guard [2022-02-15 03:00:41,987 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2022-02-15 03:00:41,987 INFO L130 BoogieDeclarations]: Found specification of procedure swprintf [2022-02-15 03:00:41,987 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2022-02-15 03:00:41,987 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2022-02-15 03:00:41,987 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2022-02-15 03:00:41,987 INFO L130 BoogieDeclarations]: Found specification of procedure RtlQueryRegistryValues [2022-02-15 03:00:41,987 INFO L130 BoogieDeclarations]: Found specification of procedure RtlDeleteRegistryValue [2022-02-15 03:00:41,987 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitString [2022-02-15 03:00:41,987 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitUnicodeString [2022-02-15 03:00:41,987 INFO L130 BoogieDeclarations]: Found specification of procedure RtlAnsiStringToUnicodeString [2022-02-15 03:00:41,987 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCopyUnicodeString [2022-02-15 03:00:41,987 INFO L130 BoogieDeclarations]: Found specification of procedure RtlFreeUnicodeString [2022-02-15 03:00:41,988 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCompareMemory [2022-02-15 03:00:41,988 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedExchange [2022-02-15 03:00:41,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-15 03:00:41,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-15 03:00:41,988 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeEvent [2022-02-15 03:00:41,988 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-02-15 03:00:41,988 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSemaphore [2022-02-15 03:00:41,988 INFO L130 BoogieDeclarations]: Found specification of procedure KeReleaseSemaphore [2022-02-15 03:00:41,988 INFO L130 BoogieDeclarations]: Found specification of procedure KeDelayExecutionThread [2022-02-15 03:00:41,988 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-02-15 03:00:41,988 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSpinLock [2022-02-15 03:00:41,989 INFO L130 BoogieDeclarations]: Found specification of procedure KfReleaseSpinLock [2022-02-15 03:00:41,989 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2022-02-15 03:00:41,989 INFO L130 BoogieDeclarations]: Found specification of procedure ExFreePool [2022-02-15 03:00:41,989 INFO L130 BoogieDeclarations]: Found specification of procedure ExAcquireFastMutex [2022-02-15 03:00:41,990 INFO L130 BoogieDeclarations]: Found specification of procedure ExReleaseFastMutex [2022-02-15 03:00:41,992 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertHeadList [2022-02-15 03:00:41,992 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertTailList [2022-02-15 03:00:41,997 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedRemoveHeadList [2022-02-15 03:00:41,997 INFO L130 BoogieDeclarations]: Found specification of procedure MmUnlockPages [2022-02-15 03:00:41,997 INFO L130 BoogieDeclarations]: Found specification of procedure MmMapLockedPagesSpecifyCache [2022-02-15 03:00:41,997 INFO L130 BoogieDeclarations]: Found specification of procedure MmAllocateContiguousMemory [2022-02-15 03:00:41,997 INFO L130 BoogieDeclarations]: Found specification of procedure MmFreeContiguousMemory [2022-02-15 03:00:41,997 INFO L130 BoogieDeclarations]: Found specification of procedure MmResetDriverPaging [2022-02-15 03:00:41,997 INFO L130 BoogieDeclarations]: Found specification of procedure MmPageEntireDriver [2022-02-15 03:00:41,998 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2022-02-15 03:00:41,998 INFO L130 BoogieDeclarations]: Found specification of procedure PsTerminateSystemThread [2022-02-15 03:00:41,998 INFO L130 BoogieDeclarations]: Found specification of procedure IoAllocateMdl [2022-02-15 03:00:41,998 INFO L130 BoogieDeclarations]: Found specification of procedure IoAttachDeviceToDeviceStack [2022-02-15 03:00:41,998 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildAsynchronousFsdRequest [2022-02-15 03:00:41,998 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2022-02-15 03:00:41,998 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-02-15 03:00:41,998 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-02-15 03:00:41,998 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateDevice [2022-02-15 03:00:41,998 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateSymbolicLink [2022-02-15 03:00:41,998 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteDevice [2022-02-15 03:00:41,998 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2022-02-15 03:00:41,998 INFO L130 BoogieDeclarations]: Found specification of procedure IoDetachDevice [2022-02-15 03:00:41,998 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeIrp [2022-02-15 03:00:41,998 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeMdl [2022-02-15 03:00:41,998 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2022-02-15 03:00:41,998 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2022-02-15 03:00:41,998 INFO L130 BoogieDeclarations]: Found specification of procedure IoReleaseCancelSpinLock [2022-02-15 03:00:41,998 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetHardErrorOrVerifyDevice [2022-02-15 03:00:41,998 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2022-02-15 03:00:41,998 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-02-15 03:00:41,999 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-02-15 03:00:41,999 INFO L130 BoogieDeclarations]: Found specification of procedure PoStartNextPowerIrp [2022-02-15 03:00:41,999 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2022-02-15 03:00:41,999 INFO L130 BoogieDeclarations]: Found specification of procedure ObfDereferenceObject [2022-02-15 03:00:41,999 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-02-15 03:00:41,999 INFO L130 BoogieDeclarations]: Found specification of procedure DriverEntry [2022-02-15 03:00:41,999 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyUnload [2022-02-15 03:00:41,999 INFO L130 BoogieDeclarations]: Found specification of procedure FlConfigCallBack [2022-02-15 03:00:41,999 INFO L130 BoogieDeclarations]: Found specification of procedure FlInitializeControllerHardware [2022-02-15 03:00:41,999 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2022-02-15 03:00:41,999 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyDeviceControl [2022-02-15 03:00:41,999 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyReadWrite [2022-02-15 03:00:41,999 INFO L130 BoogieDeclarations]: Found specification of procedure FlRecalibrateDrive [2022-02-15 03:00:41,999 INFO L130 BoogieDeclarations]: Found specification of procedure FlDatarateSpecifyConfigure [2022-02-15 03:00:41,999 INFO L130 BoogieDeclarations]: Found specification of procedure FlStartDrive [2022-02-15 03:00:41,999 INFO L130 BoogieDeclarations]: Found specification of procedure FlFinishOperation [2022-02-15 03:00:41,999 INFO L130 BoogieDeclarations]: Found specification of procedure FlDetermineMediaType [2022-02-15 03:00:41,999 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyThread [2022-02-15 03:00:41,999 INFO L130 BoogieDeclarations]: Found specification of procedure FlReadWrite [2022-02-15 03:00:42,000 INFO L130 BoogieDeclarations]: Found specification of procedure FlFormat [2022-02-15 03:00:42,000 INFO L130 BoogieDeclarations]: Found specification of procedure FlIssueCommand [2022-02-15 03:00:42,000 INFO L130 BoogieDeclarations]: Found specification of procedure FlCheckFormatParameters [2022-02-15 03:00:42,000 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2022-02-15 03:00:42,000 INFO L130 BoogieDeclarations]: Found specification of procedure FlInterpretError [2022-02-15 03:00:42,000 INFO L130 BoogieDeclarations]: Found specification of procedure FlAllocateIoBuffer [2022-02-15 03:00:42,000 INFO L130 BoogieDeclarations]: Found specification of procedure FlFreeIoBuffer [2022-02-15 03:00:42,000 INFO L130 BoogieDeclarations]: Found specification of procedure FlConsolidateMediaTypeWithBootSector [2022-02-15 03:00:42,000 INFO L130 BoogieDeclarations]: Found specification of procedure FlCheckBootSector [2022-02-15 03:00:42,000 INFO L130 BoogieDeclarations]: Found specification of procedure FlReadWriteTrack [2022-02-15 03:00:42,000 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2022-02-15 03:00:42,000 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyAddDevice [2022-02-15 03:00:42,000 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnp [2022-02-15 03:00:42,000 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPower [2022-02-15 03:00:42,000 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2022-02-15 03:00:42,000 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyQueueRequest [2022-02-15 03:00:42,000 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyStartDevice [2022-02-15 03:00:42,000 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2022-02-15 03:00:42,001 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCancelQueuedRequest [2022-02-15 03:00:42,001 INFO L130 BoogieDeclarations]: Found specification of procedure FlAcpiConfigureFloppy [2022-02-15 03:00:42,001 INFO L130 BoogieDeclarations]: Found specification of procedure FlHdbit [2022-02-15 03:00:42,001 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-02-15 03:00:42,001 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-02-15 03:00:42,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-02-15 03:00:42,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-02-15 03:00:42,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-15 03:00:42,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-15 03:00:42,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-02-15 03:00:42,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-02-15 03:00:42,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-02-15 03:00:42,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-02-15 03:00:42,001 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-02-15 03:00:42,001 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-15 03:00:42,001 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-02-15 03:00:42,001 INFO L130 BoogieDeclarations]: Found specification of procedure KeAcquireSpinLockRaiseToDpc [2022-02-15 03:00:42,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-15 03:00:42,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-15 03:00:42,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-15 03:00:42,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-02-15 03:00:42,002 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-02-15 03:00:42,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-02-15 03:00:42,002 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-02-15 03:00:42,633 INFO L234 CfgBuilder]: Building ICFG [2022-02-15 03:00:42,636 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-15 03:00:42,661 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:42,695 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 03:00:42,695 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 03:00:42,696 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:42,701 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 03:00:42,702 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 03:00:44,023 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:44,027 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 03:00:44,027 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 03:00:44,027 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:44,034 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 03:00:44,034 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 03:00:44,037 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:44,042 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 03:00:44,043 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 03:00:44,072 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:44,077 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 03:00:44,078 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 03:00:44,078 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:44,086 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 03:00:44,086 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 03:00:44,086 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:44,093 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 03:00:44,093 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 03:00:44,130 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:44,200 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2022-02-15 03:00:44,200 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2022-02-15 03:00:44,262 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:44,266 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 03:00:44,266 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 03:00:44,267 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:44,270 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 03:00:44,271 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 03:00:44,272 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:44,287 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 03:00:44,287 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 03:00:44,297 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:44,303 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 03:00:44,303 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 03:00:44,304 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:44,309 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 03:00:44,309 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 03:00:50,169 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:50,183 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-02-15 03:00:50,183 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-02-15 03:00:50,226 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:52,608 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !false; [2022-02-15 03:00:52,608 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##37: assume false; [2022-02-15 03:00:52,843 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:52,849 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 03:00:52,849 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 03:00:52,919 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:52,945 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2022-02-15 03:00:52,945 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2022-02-15 03:00:52,947 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:53,075 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-02-15 03:00:53,076 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-02-15 03:00:53,076 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:53,131 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2022-02-15 03:00:53,131 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2022-02-15 03:01:03,532 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:01:03,536 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 03:01:03,536 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 03:01:03,741 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:01:03,744 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 03:01:03,744 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 03:01:03,763 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:01:05,796 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume !false; [2022-02-15 03:01:05,796 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume false; [2022-02-15 03:01:05,868 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:01:06,075 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##48: assume !false; [2022-02-15 03:01:06,075 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##47: assume false; [2022-02-15 03:01:06,077 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:01:06,090 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-02-15 03:01:06,091 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-02-15 03:01:06,099 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:01:06,136 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2022-02-15 03:01:06,136 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2022-02-15 03:01:06,141 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:01:06,150 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-02-15 03:01:06,150 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-02-15 03:01:06,197 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:01:06,202 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 03:01:06,202 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 03:01:06,213 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:01:06,218 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 03:01:06,218 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 03:01:06,219 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:01:06,299 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##46: assume !false; [2022-02-15 03:01:06,300 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##45: assume false; [2022-02-15 03:01:06,365 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:01:08,769 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume !false; [2022-02-15 03:01:08,769 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##13: assume false; [2022-02-15 03:01:08,800 INFO L275 CfgBuilder]: Performing block encoding [2022-02-15 03:01:08,820 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-15 03:01:08,820 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2022-02-15 03:01:08,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 03:01:08 BoogieIcfgContainer [2022-02-15 03:01:08,824 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-15 03:01:08,825 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-15 03:01:08,825 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-15 03:01:08,828 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-15 03:01:08,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 03:00:40" (1/3) ... [2022-02-15 03:01:08,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d1d886c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 03:01:08, skipping insertion in model container [2022-02-15 03:01:08,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 03:00:41" (2/3) ... [2022-02-15 03:01:08,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d1d886c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 03:01:08, skipping insertion in model container [2022-02-15 03:01:08,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 03:01:08" (3/3) ... [2022-02-15 03:01:08,831 INFO L111 eAbstractionObserver]: Analyzing ICFG floppy.i.cil-3.c [2022-02-15 03:01:08,835 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-15 03:01:08,835 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-15 03:01:08,885 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-15 03:01:08,898 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=JORDAN [2022-02-15 03:01:08,898 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-15 03:01:08,940 INFO L276 IsEmpty]: Start isEmpty. Operand has 1463 states, 1158 states have (on average 1.5215889464594128) internal successors, (1762), 1199 states have internal predecessors, (1762), 227 states have call successors, (227), 73 states have call predecessors, (227), 73 states have return successors, (227), 221 states have call predecessors, (227), 227 states have call successors, (227) [2022-02-15 03:01:08,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-02-15 03:01:08,947 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:01:08,948 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] [2022-02-15 03:01:08,949 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:01:08,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:01:08,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1208806804, now seen corresponding path program 1 times [2022-02-15 03:01:08,958 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:01:08,959 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1936883431] [2022-02-15 03:01:08,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:01:08,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:01:09,078 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:01:09,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:09,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:01:09,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:09,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:01:09,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:09,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 03:01:09,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:09,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 03:01:10,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:10,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:01:10,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:10,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:01:10,076 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:01:10,076 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1936883431] [2022-02-15 03:01:10,077 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1936883431] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:01:10,078 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:01:10,078 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-15 03:01:10,079 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952648945] [2022-02-15 03:01:10,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:01:10,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-15 03:01:10,083 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:01:10,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-15 03:01:10,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-02-15 03:01:10,111 INFO L87 Difference]: Start difference. First operand has 1463 states, 1158 states have (on average 1.5215889464594128) internal successors, (1762), 1199 states have internal predecessors, (1762), 227 states have call successors, (227), 73 states have call predecessors, (227), 73 states have return successors, (227), 221 states have call predecessors, (227), 227 states have call successors, (227) Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-15 03:01:15,509 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:01:17,636 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:01:23,295 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:01:24,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:01:24,892 INFO L93 Difference]: Finished difference Result 1453 states and 2231 transitions. [2022-02-15 03:01:24,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-15 03:01:24,894 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 37 [2022-02-15 03:01:24,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:01:24,923 INFO L225 Difference]: With dead ends: 1453 [2022-02-15 03:01:24,923 INFO L226 Difference]: Without dead ends: 858 [2022-02-15 03:01:24,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-02-15 03:01:24,938 INFO L933 BasicCegarLoop]: 747 mSDtfsCounter, 1345 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 3101 mSolverCounterSat, 617 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1379 SdHoareTripleChecker+Valid, 1283 SdHoareTripleChecker+Invalid, 3721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 617 IncrementalHoareTripleChecker+Valid, 3101 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2022-02-15 03:01:24,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1379 Valid, 1283 Invalid, 3721 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [617 Valid, 3101 Invalid, 3 Unknown, 0 Unchecked, 13.7s Time] [2022-02-15 03:01:24,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2022-02-15 03:01:25,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 670. [2022-02-15 03:01:25,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 502 states have (on average 1.4203187250996017) internal successors, (713), 534 states have internal predecessors, (713), 121 states have call successors, (121), 48 states have call predecessors, (121), 46 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2022-02-15 03:01:25,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 931 transitions. [2022-02-15 03:01:25,125 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 931 transitions. Word has length 37 [2022-02-15 03:01:25,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:01:25,126 INFO L470 AbstractCegarLoop]: Abstraction has 670 states and 931 transitions. [2022-02-15 03:01:25,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-15 03:01:25,126 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 931 transitions. [2022-02-15 03:01:25,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-15 03:01:25,128 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:01:25,128 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] [2022-02-15 03:01:25,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-15 03:01:25,128 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:01:25,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:01:25,129 INFO L85 PathProgramCache]: Analyzing trace with hash 171558063, now seen corresponding path program 1 times [2022-02-15 03:01:25,129 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:01:25,129 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [366063486] [2022-02-15 03:01:25,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:01:25,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:01:25,149 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:01:25,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:25,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:01:25,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:25,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:01:25,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:25,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 03:01:25,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:25,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 03:01:25,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:25,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:01:25,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:25,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-15 03:01:25,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:25,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:01:25,658 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:01:25,659 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [366063486] [2022-02-15 03:01:25,659 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [366063486] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:01:25,659 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:01:25,659 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-15 03:01:25,659 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569551929] [2022-02-15 03:01:25,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:01:25,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-15 03:01:25,660 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:01:25,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-15 03:01:25,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-02-15 03:01:25,660 INFO L87 Difference]: Start difference. First operand 670 states and 931 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (10), 9 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-15 03:01:30,645 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:01:32,794 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:01:36,996 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:01:39,862 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:01:41,699 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:01:46,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:01:46,161 INFO L93 Difference]: Finished difference Result 1951 states and 2856 transitions. [2022-02-15 03:01:46,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-15 03:01:46,162 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (10), 9 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 42 [2022-02-15 03:01:46,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:01:46,171 INFO L225 Difference]: With dead ends: 1951 [2022-02-15 03:01:46,171 INFO L226 Difference]: Without dead ends: 1471 [2022-02-15 03:01:46,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-02-15 03:01:46,173 INFO L933 BasicCegarLoop]: 940 mSDtfsCounter, 3479 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 3502 mSolverCounterSat, 1405 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3520 SdHoareTripleChecker+Valid, 1666 SdHoareTripleChecker+Invalid, 4911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1405 IncrementalHoareTripleChecker+Valid, 3502 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.3s IncrementalHoareTripleChecker+Time [2022-02-15 03:01:46,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3520 Valid, 1666 Invalid, 4911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1405 Valid, 3502 Invalid, 4 Unknown, 0 Unchecked, 19.3s Time] [2022-02-15 03:01:46,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1471 states. [2022-02-15 03:01:46,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1471 to 1230. [2022-02-15 03:01:46,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1230 states, 946 states have (on average 1.4038054968287526) internal successors, (1328), 977 states have internal predecessors, (1328), 187 states have call successors, (187), 83 states have call predecessors, (187), 96 states have return successors, (247), 179 states have call predecessors, (247), 171 states have call successors, (247) [2022-02-15 03:01:46,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 1762 transitions. [2022-02-15 03:01:46,317 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 1762 transitions. Word has length 42 [2022-02-15 03:01:46,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:01:46,317 INFO L470 AbstractCegarLoop]: Abstraction has 1230 states and 1762 transitions. [2022-02-15 03:01:46,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (10), 9 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-15 03:01:46,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 1762 transitions. [2022-02-15 03:01:46,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-02-15 03:01:46,326 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:01:46,326 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] [2022-02-15 03:01:46,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-15 03:01:46,326 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:01:46,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:01:46,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1220689, now seen corresponding path program 1 times [2022-02-15 03:01:46,327 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:01:46,327 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1586067454] [2022-02-15 03:01:46,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:01:46,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:01:46,345 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:01:46,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:46,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:01:46,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:46,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:01:46,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:46,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 03:01:46,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:46,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 03:01:46,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:46,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:01:46,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:46,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-15 03:01:46,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:46,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-02-15 03:01:46,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:46,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:01:46,910 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:01:46,911 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1586067454] [2022-02-15 03:01:46,911 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1586067454] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:01:46,911 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:01:46,911 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-15 03:01:46,911 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352741908] [2022-02-15 03:01:46,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:01:46,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-15 03:01:46,912 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:01:46,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-15 03:01:46,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-02-15 03:01:46,913 INFO L87 Difference]: Start difference. First operand 1230 states and 1762 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-15 03:01:51,550 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:01:55,574 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:01:59,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:01:59,784 INFO L93 Difference]: Finished difference Result 2279 states and 3379 transitions. [2022-02-15 03:01:59,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-15 03:01:59,785 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 54 [2022-02-15 03:01:59,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:01:59,797 INFO L225 Difference]: With dead ends: 2279 [2022-02-15 03:01:59,797 INFO L226 Difference]: Without dead ends: 2260 [2022-02-15 03:01:59,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-02-15 03:01:59,799 INFO L933 BasicCegarLoop]: 722 mSDtfsCounter, 3868 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 2854 mSolverCounterSat, 1489 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3928 SdHoareTripleChecker+Valid, 1301 SdHoareTripleChecker+Invalid, 4345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1489 IncrementalHoareTripleChecker+Valid, 2854 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2022-02-15 03:01:59,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3928 Valid, 1301 Invalid, 4345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1489 Valid, 2854 Invalid, 2 Unknown, 0 Unchecked, 11.6s Time] [2022-02-15 03:01:59,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2260 states. [2022-02-15 03:02:00,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2260 to 1905. [2022-02-15 03:02:00,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1905 states, 1476 states have (on average 1.420731707317073) internal successors, (2097), 1527 states have internal predecessors, (2097), 279 states have call successors, (279), 129 states have call predecessors, (279), 149 states have return successors, (393), 262 states have call predecessors, (393), 263 states have call successors, (393) [2022-02-15 03:02:00,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1905 states to 1905 states and 2769 transitions. [2022-02-15 03:02:00,105 INFO L78 Accepts]: Start accepts. Automaton has 1905 states and 2769 transitions. Word has length 54 [2022-02-15 03:02:00,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:02:00,106 INFO L470 AbstractCegarLoop]: Abstraction has 1905 states and 2769 transitions. [2022-02-15 03:02:00,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-15 03:02:00,106 INFO L276 IsEmpty]: Start isEmpty. Operand 1905 states and 2769 transitions. [2022-02-15 03:02:00,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-02-15 03:02:00,108 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:02:00,108 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] [2022-02-15 03:02:00,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-15 03:02:00,108 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:02:00,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:02:00,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1955103331, now seen corresponding path program 1 times [2022-02-15 03:02:00,109 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:02:00,109 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086707067] [2022-02-15 03:02:00,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:02:00,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:02:00,121 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:02:00,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:00,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:02:00,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:00,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:02:00,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:00,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 03:02:00,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:00,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 03:02:00,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:00,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:02:00,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:00,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-15 03:02:00,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:00,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:02:00,791 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:02:00,791 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1086707067] [2022-02-15 03:02:00,791 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1086707067] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:02:00,792 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:02:00,792 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-15 03:02:00,792 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499820244] [2022-02-15 03:02:00,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:02:00,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-15 03:02:00,792 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:02:00,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-15 03:02:00,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-02-15 03:02:00,793 INFO L87 Difference]: Start difference. First operand 1905 states and 2769 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (10), 9 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-15 03:02:08,189 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:02:10,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:02:10,526 INFO L93 Difference]: Finished difference Result 2254 states and 3363 transitions. [2022-02-15 03:02:10,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-15 03:02:10,527 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (10), 9 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 55 [2022-02-15 03:02:10,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:02:10,539 INFO L225 Difference]: With dead ends: 2254 [2022-02-15 03:02:10,539 INFO L226 Difference]: Without dead ends: 2250 [2022-02-15 03:02:10,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-02-15 03:02:10,541 INFO L933 BasicCegarLoop]: 726 mSDtfsCounter, 1720 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 3121 mSolverCounterSat, 754 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1753 SdHoareTripleChecker+Valid, 1278 SdHoareTripleChecker+Invalid, 3876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 754 IncrementalHoareTripleChecker+Valid, 3121 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-02-15 03:02:10,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1753 Valid, 1278 Invalid, 3876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [754 Valid, 3121 Invalid, 1 Unknown, 0 Unchecked, 8.6s Time] [2022-02-15 03:02:10,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2250 states. [2022-02-15 03:02:10,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2250 to 1942. [2022-02-15 03:02:10,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1942 states, 1509 states have (on average 1.420808482438701) internal successors, (2144), 1557 states have internal predecessors, (2144), 281 states have call successors, (281), 132 states have call predecessors, (281), 151 states have return successors, (395), 264 states have call predecessors, (395), 265 states have call successors, (395) [2022-02-15 03:02:10,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1942 states to 1942 states and 2820 transitions. [2022-02-15 03:02:10,832 INFO L78 Accepts]: Start accepts. Automaton has 1942 states and 2820 transitions. Word has length 55 [2022-02-15 03:02:10,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:02:10,832 INFO L470 AbstractCegarLoop]: Abstraction has 1942 states and 2820 transitions. [2022-02-15 03:02:10,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (10), 9 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-15 03:02:10,833 INFO L276 IsEmpty]: Start isEmpty. Operand 1942 states and 2820 transitions. [2022-02-15 03:02:10,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-02-15 03:02:10,834 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:02:10,834 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] [2022-02-15 03:02:10,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-15 03:02:10,834 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:02:10,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:02:10,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1599289490, now seen corresponding path program 1 times [2022-02-15 03:02:10,835 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:02:10,835 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [290618144] [2022-02-15 03:02:10,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:02:10,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:02:10,846 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:02:10,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:11,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:02:11,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:11,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:02:11,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:11,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 03:02:11,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:11,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 03:02:11,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:11,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:02:11,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:11,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-15 03:02:11,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:11,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:02:11,315 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:02:11,315 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [290618144] [2022-02-15 03:02:11,316 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [290618144] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:02:11,316 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:02:11,316 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-15 03:02:11,316 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841896228] [2022-02-15 03:02:11,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:02:11,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-15 03:02:11,316 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:02:11,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-15 03:02:11,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-02-15 03:02:11,317 INFO L87 Difference]: Start difference. First operand 1942 states and 2820 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 8 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-15 03:02:19,034 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:02:24,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:02:24,186 INFO L93 Difference]: Finished difference Result 3881 states and 5849 transitions. [2022-02-15 03:02:24,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-15 03:02:24,187 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 8 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 55 [2022-02-15 03:02:24,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:02:24,212 INFO L225 Difference]: With dead ends: 3881 [2022-02-15 03:02:24,212 INFO L226 Difference]: Without dead ends: 3878 [2022-02-15 03:02:24,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-02-15 03:02:24,217 INFO L933 BasicCegarLoop]: 1152 mSDtfsCounter, 2146 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 4384 mSolverCounterSat, 913 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2192 SdHoareTripleChecker+Valid, 1872 SdHoareTripleChecker+Invalid, 5298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 913 IncrementalHoareTripleChecker+Valid, 4384 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2022-02-15 03:02:24,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2192 Valid, 1872 Invalid, 5298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [913 Valid, 4384 Invalid, 1 Unknown, 0 Unchecked, 11.3s Time] [2022-02-15 03:02:24,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3878 states. [2022-02-15 03:02:24,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3878 to 3105. [2022-02-15 03:02:24,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3105 states, 2444 states have (on average 1.4320785597381342) internal successors, (3500), 2499 states have internal predecessors, (3500), 415 states have call successors, (415), 218 states have call predecessors, (415), 245 states have return successors, (609), 399 states have call predecessors, (609), 399 states have call successors, (609) [2022-02-15 03:02:24,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3105 states to 3105 states and 4524 transitions. [2022-02-15 03:02:24,800 INFO L78 Accepts]: Start accepts. Automaton has 3105 states and 4524 transitions. Word has length 55 [2022-02-15 03:02:24,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:02:24,800 INFO L470 AbstractCegarLoop]: Abstraction has 3105 states and 4524 transitions. [2022-02-15 03:02:24,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 8 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-15 03:02:24,800 INFO L276 IsEmpty]: Start isEmpty. Operand 3105 states and 4524 transitions. [2022-02-15 03:02:24,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-02-15 03:02:24,801 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:02:24,802 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] [2022-02-15 03:02:24,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-15 03:02:24,802 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:02:24,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:02:24,802 INFO L85 PathProgramCache]: Analyzing trace with hash 2095199445, now seen corresponding path program 1 times [2022-02-15 03:02:24,802 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:02:24,802 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1722236466] [2022-02-15 03:02:24,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:02:24,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:02:24,838 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:02:24,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:25,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:02:25,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:25,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:02:25,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:25,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 03:02:25,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:25,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 03:02:25,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:25,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:02:25,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:25,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-15 03:02:25,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:25,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:02:25,360 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:02:25,361 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1722236466] [2022-02-15 03:02:25,361 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1722236466] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:02:25,361 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:02:25,361 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-15 03:02:25,361 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986526348] [2022-02-15 03:02:25,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:02:25,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-15 03:02:25,362 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:02:25,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-15 03:02:25,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-02-15 03:02:25,363 INFO L87 Difference]: Start difference. First operand 3105 states and 4524 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 5 states have internal predecessors, (40), 4 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-02-15 03:02:34,315 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:02:44,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:02:44,025 INFO L93 Difference]: Finished difference Result 6653 states and 9861 transitions. [2022-02-15 03:02:44,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-15 03:02:44,025 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 5 states have internal predecessors, (40), 4 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 56 [2022-02-15 03:02:44,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:02:44,043 INFO L225 Difference]: With dead ends: 6653 [2022-02-15 03:02:44,044 INFO L226 Difference]: Without dead ends: 3833 [2022-02-15 03:02:44,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=453, Invalid=1439, Unknown=0, NotChecked=0, Total=1892 [2022-02-15 03:02:44,058 INFO L933 BasicCegarLoop]: 981 mSDtfsCounter, 5008 mSDsluCounter, 1074 mSDsCounter, 0 mSdLazyCounter, 6697 mSolverCounterSat, 2192 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5053 SdHoareTripleChecker+Valid, 2055 SdHoareTripleChecker+Invalid, 8890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2192 IncrementalHoareTripleChecker+Valid, 6697 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.5s IncrementalHoareTripleChecker+Time [2022-02-15 03:02:44,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5053 Valid, 2055 Invalid, 8890 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2192 Valid, 6697 Invalid, 1 Unknown, 0 Unchecked, 15.5s Time] [2022-02-15 03:02:44,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3833 states. [2022-02-15 03:02:44,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3833 to 3099. [2022-02-15 03:02:44,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3099 states, 2438 states have (on average 1.4298605414273995) internal successors, (3486), 2493 states have internal predecessors, (3486), 415 states have call successors, (415), 218 states have call predecessors, (415), 245 states have return successors, (609), 399 states have call predecessors, (609), 399 states have call successors, (609) [2022-02-15 03:02:44,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3099 states to 3099 states and 4510 transitions. [2022-02-15 03:02:44,598 INFO L78 Accepts]: Start accepts. Automaton has 3099 states and 4510 transitions. Word has length 56 [2022-02-15 03:02:44,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:02:44,599 INFO L470 AbstractCegarLoop]: Abstraction has 3099 states and 4510 transitions. [2022-02-15 03:02:44,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 5 states have internal predecessors, (40), 4 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-02-15 03:02:44,599 INFO L276 IsEmpty]: Start isEmpty. Operand 3099 states and 4510 transitions. [2022-02-15 03:02:44,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-02-15 03:02:44,600 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:02:44,601 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] [2022-02-15 03:02:44,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-15 03:02:44,601 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:02:44,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:02:44,602 INFO L85 PathProgramCache]: Analyzing trace with hash -363771634, now seen corresponding path program 1 times [2022-02-15 03:02:44,602 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:02:44,602 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [525006584] [2022-02-15 03:02:44,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:02:44,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:02:44,614 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:02:44,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:44,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:02:44,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:44,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:02:44,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:44,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 03:02:44,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:45,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 03:02:45,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:45,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:02:45,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:45,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-15 03:02:45,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:45,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-15 03:02:45,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:45,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:02:45,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:45,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:02:45,202 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:02:45,202 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [525006584] [2022-02-15 03:02:45,202 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [525006584] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:02:45,202 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:02:45,203 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-15 03:02:45,203 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146894161] [2022-02-15 03:02:45,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:02:45,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-15 03:02:45,203 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:02:45,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-15 03:02:45,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-02-15 03:02:45,204 INFO L87 Difference]: Start difference. First operand 3099 states and 4510 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-15 03:02:50,360 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:02:52,493 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:02:56,883 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:03:02,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:03:02,329 INFO L93 Difference]: Finished difference Result 4462 states and 6736 transitions. [2022-02-15 03:03:02,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-15 03:03:02,330 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 57 [2022-02-15 03:03:02,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:03:02,385 INFO L225 Difference]: With dead ends: 4462 [2022-02-15 03:03:02,385 INFO L226 Difference]: Without dead ends: 4457 [2022-02-15 03:03:02,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=196, Invalid=506, Unknown=0, NotChecked=0, Total=702 [2022-02-15 03:03:02,389 INFO L933 BasicCegarLoop]: 1060 mSDtfsCounter, 2955 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 4420 mSolverCounterSat, 1427 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2989 SdHoareTripleChecker+Valid, 2028 SdHoareTripleChecker+Invalid, 5850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1427 IncrementalHoareTripleChecker+Valid, 4420 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2022-02-15 03:03:02,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2989 Valid, 2028 Invalid, 5850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1427 Valid, 4420 Invalid, 3 Unknown, 0 Unchecked, 15.4s Time] [2022-02-15 03:03:02,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4457 states. [2022-02-15 03:03:03,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4457 to 3755. [2022-02-15 03:03:03,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3755 states, 2956 states have (on average 1.4336941813261164) internal successors, (4238), 3023 states have internal predecessors, (4238), 500 states have call successors, (500), 258 states have call predecessors, (500), 298 states have return successors, (755), 491 states have call predecessors, (755), 484 states have call successors, (755) [2022-02-15 03:03:03,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3755 states to 3755 states and 5493 transitions. [2022-02-15 03:03:03,043 INFO L78 Accepts]: Start accepts. Automaton has 3755 states and 5493 transitions. Word has length 57 [2022-02-15 03:03:03,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:03:03,043 INFO L470 AbstractCegarLoop]: Abstraction has 3755 states and 5493 transitions. [2022-02-15 03:03:03,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-15 03:03:03,043 INFO L276 IsEmpty]: Start isEmpty. Operand 3755 states and 5493 transitions. [2022-02-15 03:03:03,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-02-15 03:03:03,045 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:03:03,046 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] [2022-02-15 03:03:03,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-15 03:03:03,046 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:03:03,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:03:03,046 INFO L85 PathProgramCache]: Analyzing trace with hash 590370335, now seen corresponding path program 1 times [2022-02-15 03:03:03,046 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:03:03,047 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [561450240] [2022-02-15 03:03:03,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:03:03,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:03:03,058 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:03:03,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:03,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:03:03,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:03,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:03:03,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:03,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 03:03:03,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:03,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 03:03:03,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:03,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:03:03,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:03,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-15 03:03:03,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:03,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-02-15 03:03:03,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:03,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:03:03,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:03,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:03:03,847 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:03:03,847 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [561450240] [2022-02-15 03:03:03,847 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [561450240] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:03:03,847 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:03:03,847 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-15 03:03:03,847 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501320267] [2022-02-15 03:03:03,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:03:03,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 03:03:03,847 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:03:03,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 03:03:03,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-02-15 03:03:03,848 INFO L87 Difference]: Start difference. First operand 3755 states and 5493 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:03:09,867 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:03:14,439 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:03:20,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:03:20,766 INFO L93 Difference]: Finished difference Result 4521 states and 6811 transitions. [2022-02-15 03:03:20,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-15 03:03:20,766 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) Word has length 57 [2022-02-15 03:03:20,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:03:20,783 INFO L225 Difference]: With dead ends: 4521 [2022-02-15 03:03:20,783 INFO L226 Difference]: Without dead ends: 4515 [2022-02-15 03:03:20,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=504, Invalid=1658, Unknown=0, NotChecked=0, Total=2162 [2022-02-15 03:03:20,785 INFO L933 BasicCegarLoop]: 1036 mSDtfsCounter, 4614 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 4438 mSolverCounterSat, 2195 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4662 SdHoareTripleChecker+Valid, 1839 SdHoareTripleChecker+Invalid, 6635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2195 IncrementalHoareTripleChecker+Valid, 4438 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2022-02-15 03:03:20,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4662 Valid, 1839 Invalid, 6635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2195 Valid, 4438 Invalid, 2 Unknown, 0 Unchecked, 13.5s Time] [2022-02-15 03:03:20,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4515 states. [2022-02-15 03:03:21,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4515 to 3793. [2022-02-15 03:03:21,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3793 states, 2990 states have (on average 1.4364548494983278) internal successors, (4295), 3059 states have internal predecessors, (4295), 502 states have call successors, (502), 260 states have call predecessors, (502), 300 states have return successors, (753), 491 states have call predecessors, (753), 486 states have call successors, (753) [2022-02-15 03:03:21,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3793 states to 3793 states and 5550 transitions. [2022-02-15 03:03:21,441 INFO L78 Accepts]: Start accepts. Automaton has 3793 states and 5550 transitions. Word has length 57 [2022-02-15 03:03:21,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:03:21,442 INFO L470 AbstractCegarLoop]: Abstraction has 3793 states and 5550 transitions. [2022-02-15 03:03:21,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:03:21,442 INFO L276 IsEmpty]: Start isEmpty. Operand 3793 states and 5550 transitions. [2022-02-15 03:03:21,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-02-15 03:03:21,443 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:03:21,443 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] [2022-02-15 03:03:21,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-15 03:03:21,444 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:03:21,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:03:21,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1470236357, now seen corresponding path program 1 times [2022-02-15 03:03:21,444 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:03:21,444 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [707644362] [2022-02-15 03:03:21,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:03:21,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:03:21,454 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:03:21,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:21,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:03:21,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:21,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:03:21,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:21,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 03:03:21,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:21,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 03:03:21,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:21,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:03:21,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:21,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-15 03:03:21,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:21,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-15 03:03:21,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:21,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:03:21,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:21,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:03:21,940 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:03:21,940 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [707644362] [2022-02-15 03:03:21,940 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [707644362] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:03:21,940 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:03:21,940 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-15 03:03:21,940 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141472851] [2022-02-15 03:03:21,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:03:21,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 03:03:21,941 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:03:21,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 03:03:21,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-02-15 03:03:21,942 INFO L87 Difference]: Start difference. First operand 3793 states and 5550 transitions. Second operand has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:03:30,185 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:03:36,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:03:36,368 INFO L93 Difference]: Finished difference Result 4499 states and 6781 transitions. [2022-02-15 03:03:36,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-15 03:03:36,368 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) Word has length 59 [2022-02-15 03:03:36,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:03:36,395 INFO L225 Difference]: With dead ends: 4499 [2022-02-15 03:03:36,395 INFO L226 Difference]: Without dead ends: 4493 [2022-02-15 03:03:36,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=504, Invalid=1658, Unknown=0, NotChecked=0, Total=2162 [2022-02-15 03:03:36,397 INFO L933 BasicCegarLoop]: 1031 mSDtfsCounter, 3804 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 5553 mSolverCounterSat, 1814 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3853 SdHoareTripleChecker+Valid, 1956 SdHoareTripleChecker+Invalid, 7368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1814 IncrementalHoareTripleChecker+Valid, 5553 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2022-02-15 03:03:36,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3853 Valid, 1956 Invalid, 7368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1814 Valid, 5553 Invalid, 1 Unknown, 0 Unchecked, 11.3s Time] [2022-02-15 03:03:36,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4493 states. [2022-02-15 03:03:37,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4493 to 3793. [2022-02-15 03:03:37,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3793 states, 2990 states have (on average 1.4361204013377926) internal successors, (4294), 3059 states have internal predecessors, (4294), 502 states have call successors, (502), 260 states have call predecessors, (502), 300 states have return successors, (753), 491 states have call predecessors, (753), 486 states have call successors, (753) [2022-02-15 03:03:37,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3793 states to 3793 states and 5549 transitions. [2022-02-15 03:03:37,149 INFO L78 Accepts]: Start accepts. Automaton has 3793 states and 5549 transitions. Word has length 59 [2022-02-15 03:03:37,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:03:37,150 INFO L470 AbstractCegarLoop]: Abstraction has 3793 states and 5549 transitions. [2022-02-15 03:03:37,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:03:37,150 INFO L276 IsEmpty]: Start isEmpty. Operand 3793 states and 5549 transitions. [2022-02-15 03:03:37,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-02-15 03:03:37,151 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:03:37,152 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] [2022-02-15 03:03:37,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-15 03:03:37,152 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:03:37,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:03:37,152 INFO L85 PathProgramCache]: Analyzing trace with hash -449310488, now seen corresponding path program 1 times [2022-02-15 03:03:37,152 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:03:37,152 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [825134764] [2022-02-15 03:03:37,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:03:37,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:03:37,161 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:03:37,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:37,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:03:37,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:37,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:03:37,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:37,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 03:03:37,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:37,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 03:03:37,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:37,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:03:37,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:37,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-15 03:03:37,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:37,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-02-15 03:03:37,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:37,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:03:37,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:37,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:03:37,742 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:03:37,742 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [825134764] [2022-02-15 03:03:37,742 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [825134764] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:03:37,742 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:03:37,742 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-15 03:03:37,742 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267515826] [2022-02-15 03:03:37,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:03:37,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 03:03:37,743 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:03:37,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 03:03:37,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-02-15 03:03:37,744 INFO L87 Difference]: Start difference. First operand 3793 states and 5549 transitions. Second operand has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-15 03:03:46,849 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:03:49,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:03:49,822 INFO L93 Difference]: Finished difference Result 4510 states and 6799 transitions. [2022-02-15 03:03:49,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-15 03:03:49,822 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 59 [2022-02-15 03:03:49,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:03:49,842 INFO L225 Difference]: With dead ends: 4510 [2022-02-15 03:03:49,842 INFO L226 Difference]: Without dead ends: 4493 [2022-02-15 03:03:49,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2022-02-15 03:03:49,848 INFO L933 BasicCegarLoop]: 722 mSDtfsCounter, 2798 mSDsluCounter, 1030 mSDsCounter, 0 mSdLazyCounter, 4680 mSolverCounterSat, 1205 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2837 SdHoareTripleChecker+Valid, 1752 SdHoareTripleChecker+Invalid, 5886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1205 IncrementalHoareTripleChecker+Valid, 4680 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2022-02-15 03:03:49,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2837 Valid, 1752 Invalid, 5886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1205 Valid, 4680 Invalid, 1 Unknown, 0 Unchecked, 10.4s Time] [2022-02-15 03:03:49,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4493 states. [2022-02-15 03:03:50,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4493 to 3791. [2022-02-15 03:03:50,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3791 states, 2989 states have (on average 1.43593174974908) internal successors, (4292), 3058 states have internal predecessors, (4292), 501 states have call successors, (501), 260 states have call predecessors, (501), 300 states have return successors, (752), 490 states have call predecessors, (752), 485 states have call successors, (752) [2022-02-15 03:03:50,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3791 states to 3791 states and 5545 transitions. [2022-02-15 03:03:50,635 INFO L78 Accepts]: Start accepts. Automaton has 3791 states and 5545 transitions. Word has length 59 [2022-02-15 03:03:50,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:03:50,635 INFO L470 AbstractCegarLoop]: Abstraction has 3791 states and 5545 transitions. [2022-02-15 03:03:50,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-15 03:03:50,636 INFO L276 IsEmpty]: Start isEmpty. Operand 3791 states and 5545 transitions. [2022-02-15 03:03:50,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-02-15 03:03:50,637 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:03:50,637 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:03:50,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-02-15 03:03:50,637 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:03:50,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:03:50,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1749808949, now seen corresponding path program 1 times [2022-02-15 03:03:50,638 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:03:50,638 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1711485783] [2022-02-15 03:03:50,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:03:50,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:03:50,650 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:03:50,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:50,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:03:50,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:50,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:03:50,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:50,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 03:03:50,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:51,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 03:03:51,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:51,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:03:51,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:51,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-15 03:03:51,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:51,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-15 03:03:51,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:51,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:03:51,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:51,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:03:51,194 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:03:51,194 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1711485783] [2022-02-15 03:03:51,194 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1711485783] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:03:51,195 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:03:51,195 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-15 03:03:51,195 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174970278] [2022-02-15 03:03:51,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:03:51,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 03:03:51,195 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:03:51,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 03:03:51,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-02-15 03:03:51,196 INFO L87 Difference]: Start difference. First operand 3791 states and 5545 transitions. Second operand has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-15 03:04:00,656 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:04:03,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:04:03,751 INFO L93 Difference]: Finished difference Result 4508 states and 6795 transitions. [2022-02-15 03:04:03,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-15 03:04:03,751 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 60 [2022-02-15 03:04:03,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:04:03,789 INFO L225 Difference]: With dead ends: 4508 [2022-02-15 03:04:03,789 INFO L226 Difference]: Without dead ends: 4486 [2022-02-15 03:04:03,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2022-02-15 03:04:03,790 INFO L933 BasicCegarLoop]: 717 mSDtfsCounter, 2479 mSDsluCounter, 1165 mSDsCounter, 0 mSdLazyCounter, 4736 mSolverCounterSat, 1134 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2518 SdHoareTripleChecker+Valid, 1882 SdHoareTripleChecker+Invalid, 5871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1134 IncrementalHoareTripleChecker+Valid, 4736 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2022-02-15 03:04:03,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2518 Valid, 1882 Invalid, 5871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1134 Valid, 4736 Invalid, 1 Unknown, 0 Unchecked, 10.8s Time] [2022-02-15 03:04:03,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4486 states. [2022-02-15 03:04:04,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4486 to 3784. [2022-02-15 03:04:04,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3784 states, 2985 states have (on average 1.436180904522613) internal successors, (4287), 3054 states have internal predecessors, (4287), 499 states have call successors, (499), 259 states have call predecessors, (499), 299 states have return successors, (750), 488 states have call predecessors, (750), 483 states have call successors, (750) [2022-02-15 03:04:04,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3784 states to 3784 states and 5536 transitions. [2022-02-15 03:04:04,485 INFO L78 Accepts]: Start accepts. Automaton has 3784 states and 5536 transitions. Word has length 60 [2022-02-15 03:04:04,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:04:04,485 INFO L470 AbstractCegarLoop]: Abstraction has 3784 states and 5536 transitions. [2022-02-15 03:04:04,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-15 03:04:04,485 INFO L276 IsEmpty]: Start isEmpty. Operand 3784 states and 5536 transitions. [2022-02-15 03:04:04,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-15 03:04:04,487 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:04:04,487 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] [2022-02-15 03:04:04,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-02-15 03:04:04,487 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:04:04,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:04:04,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1740462473, now seen corresponding path program 1 times [2022-02-15 03:04:04,487 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:04:04,487 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1404855271] [2022-02-15 03:04:04,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:04:04,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:04:04,497 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:04:04,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:04,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:04:04,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:04,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:04:04,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:04,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 03:04:04,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:04,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 03:04:04,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:04,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:04:04,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:04,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-15 03:04:04,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:04,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-02-15 03:04:04,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:04,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:04:04,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:04,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:04:04,943 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:04:04,943 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1404855271] [2022-02-15 03:04:04,943 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1404855271] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:04:04,943 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:04:04,943 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-15 03:04:04,943 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287623568] [2022-02-15 03:04:04,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:04:04,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 03:04:04,944 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:04:04,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 03:04:04,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-02-15 03:04:04,944 INFO L87 Difference]: Start difference. First operand 3784 states and 5536 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (13), 10 states have call predecessors, (13), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:04:09,245 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:04:11,355 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:04:15,880 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:04:19,172 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:04:21,299 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:04:28,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:04:28,170 INFO L93 Difference]: Finished difference Result 12302 states and 18979 transitions. [2022-02-15 03:04:28,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-15 03:04:28,171 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (13), 10 states have call predecessors, (13), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 69 [2022-02-15 03:04:28,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:04:28,200 INFO L225 Difference]: With dead ends: 12302 [2022-02-15 03:04:28,201 INFO L226 Difference]: Without dead ends: 8762 [2022-02-15 03:04:28,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2022-02-15 03:04:28,219 INFO L933 BasicCegarLoop]: 921 mSDtfsCounter, 3613 mSDsluCounter, 977 mSDsCounter, 0 mSdLazyCounter, 3707 mSolverCounterSat, 1615 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3672 SdHoareTripleChecker+Valid, 1898 SdHoareTripleChecker+Invalid, 5327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1615 IncrementalHoareTripleChecker+Valid, 3707 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.8s IncrementalHoareTripleChecker+Time [2022-02-15 03:04:28,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3672 Valid, 1898 Invalid, 5327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1615 Valid, 3707 Invalid, 5 Unknown, 0 Unchecked, 19.8s Time] [2022-02-15 03:04:28,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8762 states. [2022-02-15 03:04:29,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8762 to 7553. [2022-02-15 03:04:29,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7553 states, 5959 states have (on average 1.4463836214129888) internal successors, (8619), 6145 states have internal predecessors, (8619), 1012 states have call successors, (1012), 479 states have call predecessors, (1012), 581 states have return successors, (1808), 964 states have call predecessors, (1808), 999 states have call successors, (1808) [2022-02-15 03:04:29,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7553 states to 7553 states and 11439 transitions. [2022-02-15 03:04:29,924 INFO L78 Accepts]: Start accepts. Automaton has 7553 states and 11439 transitions. Word has length 69 [2022-02-15 03:04:29,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:04:29,924 INFO L470 AbstractCegarLoop]: Abstraction has 7553 states and 11439 transitions. [2022-02-15 03:04:29,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (13), 10 states have call predecessors, (13), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:04:29,924 INFO L276 IsEmpty]: Start isEmpty. Operand 7553 states and 11439 transitions. [2022-02-15 03:04:29,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-02-15 03:04:29,926 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:04:29,926 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:04:29,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-02-15 03:04:29,926 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:04:29,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:04:29,926 INFO L85 PathProgramCache]: Analyzing trace with hash -858477288, now seen corresponding path program 1 times [2022-02-15 03:04:29,926 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:04:29,926 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [228410671] [2022-02-15 03:04:29,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:04:29,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:04:29,937 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:04:29,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:30,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:04:30,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:30,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:04:30,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:30,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 03:04:30,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:30,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 03:04:30,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:30,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:04:30,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:30,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-15 03:04:30,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:30,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-02-15 03:04:30,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:30,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:04:30,392 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:04:30,392 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [228410671] [2022-02-15 03:04:30,392 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [228410671] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:04:30,392 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:04:30,392 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-15 03:04:30,392 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095445836] [2022-02-15 03:04:30,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:04:30,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 03:04:30,392 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:04:30,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 03:04:30,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-02-15 03:04:30,393 INFO L87 Difference]: Start difference. First operand 7553 states and 11439 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-02-15 03:04:37,192 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:04:41,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:04:41,874 INFO L93 Difference]: Finished difference Result 15329 states and 23754 transitions. [2022-02-15 03:04:41,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-15 03:04:41,874 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 61 [2022-02-15 03:04:41,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:04:41,913 INFO L225 Difference]: With dead ends: 15329 [2022-02-15 03:04:41,913 INFO L226 Difference]: Without dead ends: 8851 [2022-02-15 03:04:41,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2022-02-15 03:04:41,944 INFO L933 BasicCegarLoop]: 709 mSDtfsCounter, 1463 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 3193 mSolverCounterSat, 656 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1499 SdHoareTripleChecker+Valid, 1290 SdHoareTripleChecker+Invalid, 3850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 656 IncrementalHoareTripleChecker+Valid, 3193 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-02-15 03:04:41,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1499 Valid, 1290 Invalid, 3850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [656 Valid, 3193 Invalid, 1 Unknown, 0 Unchecked, 8.4s Time] [2022-02-15 03:04:41,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8851 states. [2022-02-15 03:04:43,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8851 to 7693. [2022-02-15 03:04:43,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7693 states, 6099 states have (on average 1.4341695359895066) internal successors, (8747), 6285 states have internal predecessors, (8747), 1012 states have call successors, (1012), 479 states have call predecessors, (1012), 581 states have return successors, (1808), 964 states have call predecessors, (1808), 999 states have call successors, (1808) [2022-02-15 03:04:43,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7693 states to 7693 states and 11567 transitions. [2022-02-15 03:04:43,712 INFO L78 Accepts]: Start accepts. Automaton has 7693 states and 11567 transitions. Word has length 61 [2022-02-15 03:04:43,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:04:43,712 INFO L470 AbstractCegarLoop]: Abstraction has 7693 states and 11567 transitions. [2022-02-15 03:04:43,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-02-15 03:04:43,712 INFO L276 IsEmpty]: Start isEmpty. Operand 7693 states and 11567 transitions. [2022-02-15 03:04:43,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-02-15 03:04:43,714 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:04:43,714 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] [2022-02-15 03:04:43,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-02-15 03:04:43,714 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:04:43,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:04:43,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1733980064, now seen corresponding path program 1 times [2022-02-15 03:04:43,715 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:04:43,715 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1345805719] [2022-02-15 03:04:43,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:04:43,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:04:43,729 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:04:43,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:43,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:04:43,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:44,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:04:44,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:44,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 03:04:44,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:44,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 03:04:44,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:44,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:04:44,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:44,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-15 03:04:44,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:44,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-02-15 03:04:44,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:44,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-15 03:04:44,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:44,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:04:44,296 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:04:44,296 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1345805719] [2022-02-15 03:04:44,296 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1345805719] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:04:44,296 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:04:44,296 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-15 03:04:44,297 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692706313] [2022-02-15 03:04:44,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:04:44,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 03:04:44,297 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:04:44,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 03:04:44,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-02-15 03:04:44,297 INFO L87 Difference]: Start difference. First operand 7693 states and 11567 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:04:53,428 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:04:59,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:04:59,986 INFO L93 Difference]: Finished difference Result 16412 states and 24974 transitions. [2022-02-15 03:04:59,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-15 03:04:59,987 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 64 [2022-02-15 03:04:59,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:05:00,027 INFO L225 Difference]: With dead ends: 16412 [2022-02-15 03:05:00,028 INFO L226 Difference]: Without dead ends: 8747 [2022-02-15 03:05:00,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=122, Invalid=384, Unknown=0, NotChecked=0, Total=506 [2022-02-15 03:05:00,065 INFO L933 BasicCegarLoop]: 713 mSDtfsCounter, 1570 mSDsluCounter, 1221 mSDsCounter, 0 mSdLazyCounter, 5868 mSolverCounterSat, 685 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1607 SdHoareTripleChecker+Valid, 1934 SdHoareTripleChecker+Invalid, 6554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 685 IncrementalHoareTripleChecker+Valid, 5868 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2022-02-15 03:05:00,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1607 Valid, 1934 Invalid, 6554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [685 Valid, 5868 Invalid, 1 Unknown, 0 Unchecked, 12.2s Time] [2022-02-15 03:05:00,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8747 states. [2022-02-15 03:05:01,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8747 to 7693. [2022-02-15 03:05:01,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7693 states, 6099 states have (on average 1.4340055746843745) internal successors, (8746), 6285 states have internal predecessors, (8746), 1012 states have call successors, (1012), 479 states have call predecessors, (1012), 581 states have return successors, (1808), 964 states have call predecessors, (1808), 999 states have call successors, (1808) [2022-02-15 03:05:01,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7693 states to 7693 states and 11566 transitions. [2022-02-15 03:05:01,934 INFO L78 Accepts]: Start accepts. Automaton has 7693 states and 11566 transitions. Word has length 64 [2022-02-15 03:05:01,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:05:01,935 INFO L470 AbstractCegarLoop]: Abstraction has 7693 states and 11566 transitions. [2022-02-15 03:05:01,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:05:01,935 INFO L276 IsEmpty]: Start isEmpty. Operand 7693 states and 11566 transitions. [2022-02-15 03:05:01,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-02-15 03:05:01,936 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:05:01,936 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] [2022-02-15 03:05:01,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-02-15 03:05:01,936 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:05:01,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:05:01,937 INFO L85 PathProgramCache]: Analyzing trace with hash 605121929, now seen corresponding path program 1 times [2022-02-15 03:05:01,937 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:05:01,938 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [493990659] [2022-02-15 03:05:01,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:05:01,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:05:01,952 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:05:02,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:02,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:05:02,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:02,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:05:02,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:02,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 03:05:02,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:02,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 03:05:02,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:02,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:05:02,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:02,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-15 03:05:02,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:02,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-15 03:05:02,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:02,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-15 03:05:02,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:02,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:05:02,557 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:05:02,558 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [493990659] [2022-02-15 03:05:02,558 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [493990659] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:05:02,558 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:05:02,558 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-15 03:05:02,558 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490736484] [2022-02-15 03:05:02,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:05:02,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 03:05:02,558 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:05:02,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 03:05:02,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-02-15 03:05:02,559 INFO L87 Difference]: Start difference. First operand 7693 states and 11566 transitions. Second operand has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-15 03:05:09,903 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:05:15,965 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:05:23,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:05:23,229 INFO L93 Difference]: Finished difference Result 8779 states and 13520 transitions. [2022-02-15 03:05:23,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-15 03:05:23,230 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 68 [2022-02-15 03:05:23,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:05:23,255 INFO L225 Difference]: With dead ends: 8779 [2022-02-15 03:05:23,255 INFO L226 Difference]: Without dead ends: 8763 [2022-02-15 03:05:23,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2022-02-15 03:05:23,260 INFO L933 BasicCegarLoop]: 720 mSDtfsCounter, 1563 mSDsluCounter, 1229 mSDsCounter, 0 mSdLazyCounter, 5950 mSolverCounterSat, 683 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1601 SdHoareTripleChecker+Valid, 1949 SdHoareTripleChecker+Invalid, 6635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 683 IncrementalHoareTripleChecker+Valid, 5950 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.9s IncrementalHoareTripleChecker+Time [2022-02-15 03:05:23,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1601 Valid, 1949 Invalid, 6635 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [683 Valid, 5950 Invalid, 2 Unknown, 0 Unchecked, 16.9s Time] [2022-02-15 03:05:23,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8763 states. [2022-02-15 03:05:24,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8763 to 7699. [2022-02-15 03:05:25,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7699 states, 6102 states have (on average 1.4337921992789249) internal successors, (8749), 6291 states have internal predecessors, (8749), 1012 states have call successors, (1012), 479 states have call predecessors, (1012), 584 states have return successors, (1830), 964 states have call predecessors, (1830), 999 states have call successors, (1830) [2022-02-15 03:05:25,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7699 states to 7699 states and 11591 transitions. [2022-02-15 03:05:25,038 INFO L78 Accepts]: Start accepts. Automaton has 7699 states and 11591 transitions. Word has length 68 [2022-02-15 03:05:25,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:05:25,038 INFO L470 AbstractCegarLoop]: Abstraction has 7699 states and 11591 transitions. [2022-02-15 03:05:25,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-15 03:05:25,039 INFO L276 IsEmpty]: Start isEmpty. Operand 7699 states and 11591 transitions. [2022-02-15 03:05:25,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-15 03:05:25,040 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:05:25,040 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] [2022-02-15 03:05:25,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-02-15 03:05:25,040 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:05:25,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:05:25,041 INFO L85 PathProgramCache]: Analyzing trace with hash -175683046, now seen corresponding path program 1 times [2022-02-15 03:05:25,041 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:05:25,041 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1909843619] [2022-02-15 03:05:25,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:05:25,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:05:25,052 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:05:25,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:25,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:05:25,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:25,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:05:25,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:25,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 03:05:25,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:25,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 03:05:25,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:25,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:05:25,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:25,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-15 03:05:25,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:25,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-02-15 03:05:25,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:25,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-15 03:05:25,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:25,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:05:25,647 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:05:25,647 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1909843619] [2022-02-15 03:05:25,647 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1909843619] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:05:25,647 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:05:25,647 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-15 03:05:25,647 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862605141] [2022-02-15 03:05:25,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:05:25,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 03:05:25,647 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:05:25,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 03:05:25,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-02-15 03:05:25,648 INFO L87 Difference]: Start difference. First operand 7699 states and 11591 transitions. Second operand has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-15 03:05:35,853 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:05:41,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:05:41,716 INFO L93 Difference]: Finished difference Result 8771 states and 13494 transitions. [2022-02-15 03:05:41,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-15 03:05:41,717 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 69 [2022-02-15 03:05:41,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:05:41,748 INFO L225 Difference]: With dead ends: 8771 [2022-02-15 03:05:41,748 INFO L226 Difference]: Without dead ends: 8751 [2022-02-15 03:05:41,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2022-02-15 03:05:41,755 INFO L933 BasicCegarLoop]: 727 mSDtfsCounter, 1568 mSDsluCounter, 1234 mSDsCounter, 0 mSdLazyCounter, 5278 mSolverCounterSat, 687 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1606 SdHoareTripleChecker+Valid, 1961 SdHoareTripleChecker+Invalid, 5966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 687 IncrementalHoareTripleChecker+Valid, 5278 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2022-02-15 03:05:41,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1606 Valid, 1961 Invalid, 5966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [687 Valid, 5278 Invalid, 1 Unknown, 0 Unchecked, 12.7s Time] [2022-02-15 03:05:41,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8751 states. [2022-02-15 03:05:43,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8751 to 7697. [2022-02-15 03:05:43,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7697 states, 6101 states have (on average 1.4336993935420423) internal successors, (8747), 6290 states have internal predecessors, (8747), 1011 states have call successors, (1011), 479 states have call predecessors, (1011), 584 states have return successors, (1829), 963 states have call predecessors, (1829), 998 states have call successors, (1829) [2022-02-15 03:05:43,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7697 states to 7697 states and 11587 transitions. [2022-02-15 03:05:43,662 INFO L78 Accepts]: Start accepts. Automaton has 7697 states and 11587 transitions. Word has length 69 [2022-02-15 03:05:43,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:05:43,662 INFO L470 AbstractCegarLoop]: Abstraction has 7697 states and 11587 transitions. [2022-02-15 03:05:43,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-15 03:05:43,663 INFO L276 IsEmpty]: Start isEmpty. Operand 7697 states and 11587 transitions. [2022-02-15 03:05:43,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-15 03:05:43,665 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:05:43,665 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] [2022-02-15 03:05:43,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-02-15 03:05:43,665 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:05:43,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:05:43,666 INFO L85 PathProgramCache]: Analyzing trace with hash -2112328753, now seen corresponding path program 1 times [2022-02-15 03:05:43,666 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:05:43,666 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1414974406] [2022-02-15 03:05:43,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:05:43,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:05:43,680 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:05:43,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:43,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:05:44,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:44,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:05:44,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:44,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 03:05:44,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:44,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 03:05:44,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:44,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:05:44,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:44,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-15 03:05:44,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:44,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-02-15 03:05:44,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:44,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-15 03:05:44,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:44,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:05:44,428 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:05:44,428 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1414974406] [2022-02-15 03:05:44,428 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1414974406] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:05:44,428 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:05:44,428 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-15 03:05:44,428 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958928790] [2022-02-15 03:05:44,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:05:44,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 03:05:44,428 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:05:44,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 03:05:44,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-02-15 03:05:44,429 INFO L87 Difference]: Start difference. First operand 7697 states and 11587 transitions. Second operand has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-15 03:05:56,382 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:06:04,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:06:04,557 INFO L93 Difference]: Finished difference Result 8766 states and 13487 transitions. [2022-02-15 03:06:04,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-15 03:06:04,580 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 71 [2022-02-15 03:06:04,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:06:04,617 INFO L225 Difference]: With dead ends: 8766 [2022-02-15 03:06:04,617 INFO L226 Difference]: Without dead ends: 8746 [2022-02-15 03:06:04,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2022-02-15 03:06:04,624 INFO L933 BasicCegarLoop]: 723 mSDtfsCounter, 2085 mSDsluCounter, 1283 mSDsCounter, 0 mSdLazyCounter, 5421 mSolverCounterSat, 898 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2123 SdHoareTripleChecker+Valid, 2006 SdHoareTripleChecker+Invalid, 6320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 898 IncrementalHoareTripleChecker+Valid, 5421 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.9s IncrementalHoareTripleChecker+Time [2022-02-15 03:06:04,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2123 Valid, 2006 Invalid, 6320 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [898 Valid, 5421 Invalid, 1 Unknown, 0 Unchecked, 15.9s Time] [2022-02-15 03:06:04,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8746 states. [2022-02-15 03:06:06,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8746 to 7692. [2022-02-15 03:06:07,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7692 states, 6098 states have (on average 1.4337487700885536) internal successors, (8743), 6287 states have internal predecessors, (8743), 1010 states have call successors, (1010), 479 states have call predecessors, (1010), 583 states have return successors, (1827), 961 states have call predecessors, (1827), 997 states have call successors, (1827) [2022-02-15 03:06:07,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7692 states to 7692 states and 11580 transitions. [2022-02-15 03:06:07,041 INFO L78 Accepts]: Start accepts. Automaton has 7692 states and 11580 transitions. Word has length 71 [2022-02-15 03:06:07,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:06:07,042 INFO L470 AbstractCegarLoop]: Abstraction has 7692 states and 11580 transitions. [2022-02-15 03:06:07,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-15 03:06:07,042 INFO L276 IsEmpty]: Start isEmpty. Operand 7692 states and 11580 transitions. [2022-02-15 03:06:07,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-02-15 03:06:07,045 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:06:07,045 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:06:07,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-02-15 03:06:07,045 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:06:07,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:06:07,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1256030660, now seen corresponding path program 1 times [2022-02-15 03:06:07,046 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:06:07,046 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [687726064] [2022-02-15 03:06:07,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:06:07,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:06:07,114 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:06:07,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:07,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:06:07,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:07,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:06:07,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:07,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 03:06:07,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:07,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 03:06:07,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:07,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:06:07,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:07,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-15 03:06:07,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:07,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-15 03:06:07,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:08,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 03:06:08,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:08,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:06:08,100 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:06:08,101 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [687726064] [2022-02-15 03:06:08,101 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [687726064] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:06:08,101 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:06:08,101 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-15 03:06:08,101 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420987601] [2022-02-15 03:06:08,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:06:08,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-15 03:06:08,101 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:06:08,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-15 03:06:08,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-02-15 03:06:08,102 INFO L87 Difference]: Start difference. First operand 7692 states and 11580 transitions. Second operand has 15 states, 15 states have (on average 3.6) internal successors, (54), 7 states have internal predecessors, (54), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-02-15 03:06:16,879 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:06:18,558 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:06:25,116 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:06:31,844 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:06:34,022 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:06:36,193 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:06:38,667 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:06:47,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:06:47,875 INFO L93 Difference]: Finished difference Result 14674 states and 22627 transitions. [2022-02-15 03:06:47,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-15 03:06:47,876 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6) internal successors, (54), 7 states have internal predecessors, (54), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 72 [2022-02-15 03:06:47,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:06:47,912 INFO L225 Difference]: With dead ends: 14674 [2022-02-15 03:06:47,912 INFO L226 Difference]: Without dead ends: 10336 [2022-02-15 03:06:47,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=533, Invalid=2223, Unknown=0, NotChecked=0, Total=2756 [2022-02-15 03:06:47,931 INFO L933 BasicCegarLoop]: 1096 mSDtfsCounter, 4399 mSDsluCounter, 1204 mSDsCounter, 0 mSdLazyCounter, 8311 mSolverCounterSat, 2366 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4407 SdHoareTripleChecker+Valid, 2300 SdHoareTripleChecker+Invalid, 10682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2366 IncrementalHoareTripleChecker+Valid, 8311 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.7s IncrementalHoareTripleChecker+Time [2022-02-15 03:06:47,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4407 Valid, 2300 Invalid, 10682 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2366 Valid, 8311 Invalid, 5 Unknown, 0 Unchecked, 32.7s Time] [2022-02-15 03:06:47,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10336 states. [2022-02-15 03:06:50,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10336 to 8302. [2022-02-15 03:06:50,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8302 states, 6587 states have (on average 1.432974039775315) internal successors, (9439), 6782 states have internal predecessors, (9439), 1077 states have call successors, (1077), 521 states have call predecessors, (1077), 637 states have return successors, (1969), 1033 states have call predecessors, (1969), 1063 states have call successors, (1969) [2022-02-15 03:06:50,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8302 states to 8302 states and 12485 transitions. [2022-02-15 03:06:50,082 INFO L78 Accepts]: Start accepts. Automaton has 8302 states and 12485 transitions. Word has length 72 [2022-02-15 03:06:50,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:06:50,082 INFO L470 AbstractCegarLoop]: Abstraction has 8302 states and 12485 transitions. [2022-02-15 03:06:50,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6) internal successors, (54), 7 states have internal predecessors, (54), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-02-15 03:06:50,082 INFO L276 IsEmpty]: Start isEmpty. Operand 8302 states and 12485 transitions. [2022-02-15 03:06:50,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-02-15 03:06:50,084 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:06:50,084 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:06:50,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-02-15 03:06:50,084 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:06:50,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:06:50,085 INFO L85 PathProgramCache]: Analyzing trace with hash -26354390, now seen corresponding path program 1 times [2022-02-15 03:06:50,085 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:06:50,085 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181486490] [2022-02-15 03:06:50,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:06:50,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:06:50,098 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:06:50,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:50,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:06:50,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:50,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:06:50,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:50,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 03:06:50,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:50,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 03:06:50,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:50,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:06:50,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:50,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-15 03:06:50,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:50,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-15 03:06:50,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:50,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:06:50,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:50,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:06:50,918 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:06:50,918 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181486490] [2022-02-15 03:06:50,919 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1181486490] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:06:50,919 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:06:50,919 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-15 03:06:50,919 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645249360] [2022-02-15 03:06:50,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:06:50,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 03:06:50,919 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:06:50,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 03:06:50,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-02-15 03:06:50,920 INFO L87 Difference]: Start difference. First operand 8302 states and 12485 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-15 03:06:57,448 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:06:59,418 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:07:05,060 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:07:11,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:07:11,917 INFO L93 Difference]: Finished difference Result 16816 states and 25928 transitions. [2022-02-15 03:07:11,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-15 03:07:11,918 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) Word has length 73 [2022-02-15 03:07:11,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:07:11,955 INFO L225 Difference]: With dead ends: 16816 [2022-02-15 03:07:11,956 INFO L226 Difference]: Without dead ends: 9706 [2022-02-15 03:07:11,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2022-02-15 03:07:11,982 INFO L933 BasicCegarLoop]: 682 mSDtfsCounter, 1464 mSDsluCounter, 994 mSDsCounter, 0 mSdLazyCounter, 5209 mSolverCounterSat, 660 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1499 SdHoareTripleChecker+Valid, 1676 SdHoareTripleChecker+Invalid, 5871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 660 IncrementalHoareTripleChecker+Valid, 5209 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.6s IncrementalHoareTripleChecker+Time [2022-02-15 03:07:11,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1499 Valid, 1676 Invalid, 5871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [660 Valid, 5209 Invalid, 2 Unknown, 0 Unchecked, 16.6s Time] [2022-02-15 03:07:11,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9706 states. [2022-02-15 03:07:14,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9706 to 8382. [2022-02-15 03:07:14,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8382 states, 6645 states have (on average 1.4291948833709556) internal successors, (9497), 6850 states have internal predecessors, (9497), 1077 states have call successors, (1077), 521 states have call predecessors, (1077), 659 states have return successors, (2036), 1045 states have call predecessors, (2036), 1063 states have call successors, (2036) [2022-02-15 03:07:14,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8382 states to 8382 states and 12610 transitions. [2022-02-15 03:07:14,174 INFO L78 Accepts]: Start accepts. Automaton has 8382 states and 12610 transitions. Word has length 73 [2022-02-15 03:07:14,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:07:14,175 INFO L470 AbstractCegarLoop]: Abstraction has 8382 states and 12610 transitions. [2022-02-15 03:07:14,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-15 03:07:14,175 INFO L276 IsEmpty]: Start isEmpty. Operand 8382 states and 12610 transitions. [2022-02-15 03:07:14,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-15 03:07:14,176 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:07:14,177 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:07:14,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-02-15 03:07:14,177 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:07:14,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:07:14,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1359799553, now seen corresponding path program 1 times [2022-02-15 03:07:14,177 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:07:14,177 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599889703] [2022-02-15 03:07:14,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:07:14,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:07:14,190 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:07:14,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:14,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:07:14,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:14,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:07:14,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:14,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 03:07:14,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:14,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 03:07:14,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:14,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:07:14,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:14,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-15 03:07:14,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:14,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-15 03:07:14,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:14,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 03:07:14,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:14,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:07:14,867 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:07:14,867 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [599889703] [2022-02-15 03:07:14,868 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [599889703] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:07:14,868 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:07:14,868 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-15 03:07:14,868 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968955839] [2022-02-15 03:07:14,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:07:14,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 03:07:14,868 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:07:14,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 03:07:14,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-02-15 03:07:14,869 INFO L87 Difference]: Start difference. First operand 8382 states and 12610 transitions. Second operand has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:07:25,793 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:07:32,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:07:32,707 INFO L93 Difference]: Finished difference Result 17740 states and 27353 transitions. [2022-02-15 03:07:32,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-15 03:07:32,708 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 74 [2022-02-15 03:07:32,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:07:32,749 INFO L225 Difference]: With dead ends: 17740 [2022-02-15 03:07:32,749 INFO L226 Difference]: Without dead ends: 9612 [2022-02-15 03:07:32,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=222, Invalid=590, Unknown=0, NotChecked=0, Total=812 [2022-02-15 03:07:32,784 INFO L933 BasicCegarLoop]: 660 mSDtfsCounter, 2143 mSDsluCounter, 805 mSDsCounter, 0 mSdLazyCounter, 4174 mSolverCounterSat, 870 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2194 SdHoareTripleChecker+Valid, 1465 SdHoareTripleChecker+Invalid, 5045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 870 IncrementalHoareTripleChecker+Valid, 4174 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2022-02-15 03:07:32,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2194 Valid, 1465 Invalid, 5045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [870 Valid, 4174 Invalid, 1 Unknown, 0 Unchecked, 12.8s Time] [2022-02-15 03:07:32,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9612 states. [2022-02-15 03:07:35,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9612 to 8401. [2022-02-15 03:07:35,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8401 states, 6664 states have (on average 1.4294717887154862) internal successors, (9526), 6869 states have internal predecessors, (9526), 1077 states have call successors, (1077), 521 states have call predecessors, (1077), 659 states have return successors, (2036), 1045 states have call predecessors, (2036), 1063 states have call successors, (2036) [2022-02-15 03:07:35,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8401 states to 8401 states and 12639 transitions. [2022-02-15 03:07:35,138 INFO L78 Accepts]: Start accepts. Automaton has 8401 states and 12639 transitions. Word has length 74 [2022-02-15 03:07:35,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:07:35,138 INFO L470 AbstractCegarLoop]: Abstraction has 8401 states and 12639 transitions. [2022-02-15 03:07:35,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:07:35,138 INFO L276 IsEmpty]: Start isEmpty. Operand 8401 states and 12639 transitions. [2022-02-15 03:07:35,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-15 03:07:35,140 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:07:35,140 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:07:35,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-02-15 03:07:35,140 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:07:35,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:07:35,140 INFO L85 PathProgramCache]: Analyzing trace with hash 941023037, now seen corresponding path program 1 times [2022-02-15 03:07:35,140 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:07:35,140 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1696330935] [2022-02-15 03:07:35,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:07:35,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:07:35,152 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:07:35,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:35,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:07:35,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:35,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:07:35,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:35,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 03:07:35,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:35,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 03:07:35,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:35,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:07:35,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:35,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-15 03:07:35,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:35,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-15 03:07:35,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:35,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 03:07:35,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:35,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:07:35,777 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:07:35,777 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1696330935] [2022-02-15 03:07:35,777 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1696330935] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:07:35,777 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:07:35,777 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-15 03:07:35,777 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231628608] [2022-02-15 03:07:35,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:07:35,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-15 03:07:35,778 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:07:35,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-15 03:07:35,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-02-15 03:07:35,778 INFO L87 Difference]: Start difference. First operand 8401 states and 12639 transitions. Second operand has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-02-15 03:07:45,536 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:07:53,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:07:53,603 INFO L93 Difference]: Finished difference Result 13775 states and 20993 transitions. [2022-02-15 03:07:53,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-15 03:07:53,604 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 74 [2022-02-15 03:07:53,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:07:53,647 INFO L225 Difference]: With dead ends: 13775 [2022-02-15 03:07:53,648 INFO L226 Difference]: Without dead ends: 9386 [2022-02-15 03:07:53,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=374, Invalid=1432, Unknown=0, NotChecked=0, Total=1806 [2022-02-15 03:07:53,677 INFO L933 BasicCegarLoop]: 671 mSDtfsCounter, 2902 mSDsluCounter, 863 mSDsCounter, 0 mSdLazyCounter, 4771 mSolverCounterSat, 1253 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2932 SdHoareTripleChecker+Valid, 1534 SdHoareTripleChecker+Invalid, 6025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1253 IncrementalHoareTripleChecker+Valid, 4771 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2022-02-15 03:07:53,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2932 Valid, 1534 Invalid, 6025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1253 Valid, 4771 Invalid, 1 Unknown, 0 Unchecked, 12.1s Time] [2022-02-15 03:07:53,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9386 states. [2022-02-15 03:07:56,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9386 to 7603. [2022-02-15 03:07:56,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7603 states, 6032 states have (on average 1.4278846153846154) internal successors, (8613), 6225 states have internal predecessors, (8613), 974 states have call successors, (974), 475 states have call predecessors, (974), 596 states have return successors, (1663), 937 states have call predecessors, (1663), 960 states have call successors, (1663) [2022-02-15 03:07:56,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7603 states to 7603 states and 11250 transitions. [2022-02-15 03:07:56,124 INFO L78 Accepts]: Start accepts. Automaton has 7603 states and 11250 transitions. Word has length 74 [2022-02-15 03:07:56,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:07:56,124 INFO L470 AbstractCegarLoop]: Abstraction has 7603 states and 11250 transitions. [2022-02-15 03:07:56,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-02-15 03:07:56,125 INFO L276 IsEmpty]: Start isEmpty. Operand 7603 states and 11250 transitions. [2022-02-15 03:07:56,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-15 03:07:56,126 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:07:56,126 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:07:56,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-02-15 03:07:56,126 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:07:56,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:07:56,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1087715839, now seen corresponding path program 1 times [2022-02-15 03:07:56,127 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:07:56,127 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1126491725] [2022-02-15 03:07:56,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:07:56,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:07:56,143 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:07:56,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:56,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:07:56,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:56,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:07:56,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:56,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 03:07:56,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:56,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 03:07:56,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:56,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:07:56,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:56,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-15 03:07:56,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:56,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-15 03:07:56,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:56,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 03:07:56,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:56,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:07:56,951 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:07:56,951 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1126491725] [2022-02-15 03:07:56,952 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1126491725] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:07:56,952 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:07:56,952 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-15 03:07:56,952 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507792432] [2022-02-15 03:07:56,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:07:56,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-15 03:07:56,954 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:07:56,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-15 03:07:56,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-02-15 03:07:56,954 INFO L87 Difference]: Start difference. First operand 7603 states and 11250 transitions. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-15 03:08:07,562 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:08:21,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:08:21,147 INFO L93 Difference]: Finished difference Result 11766 states and 17892 transitions. [2022-02-15 03:08:21,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-15 03:08:21,149 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 74 [2022-02-15 03:08:21,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:08:21,183 INFO L225 Difference]: With dead ends: 11766 [2022-02-15 03:08:21,183 INFO L226 Difference]: Without dead ends: 11753 [2022-02-15 03:08:21,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=231, Invalid=639, Unknown=0, NotChecked=0, Total=870 [2022-02-15 03:08:21,188 INFO L933 BasicCegarLoop]: 1150 mSDtfsCounter, 2165 mSDsluCounter, 972 mSDsCounter, 0 mSdLazyCounter, 5527 mSolverCounterSat, 971 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2212 SdHoareTripleChecker+Valid, 2122 SdHoareTripleChecker+Invalid, 6499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 971 IncrementalHoareTripleChecker+Valid, 5527 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.7s IncrementalHoareTripleChecker+Time [2022-02-15 03:08:21,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2212 Valid, 2122 Invalid, 6499 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [971 Valid, 5527 Invalid, 1 Unknown, 0 Unchecked, 17.7s Time] [2022-02-15 03:08:21,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11753 states. [2022-02-15 03:08:23,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11753 to 8234. [2022-02-15 03:08:23,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8234 states, 6544 states have (on average 1.4306234718826405) internal successors, (9362), 6738 states have internal predecessors, (9362), 1043 states have call successors, (1043), 516 states have call predecessors, (1043), 646 states have return successors, (1777), 1015 states have call predecessors, (1777), 1029 states have call successors, (1777) [2022-02-15 03:08:23,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8234 states to 8234 states and 12182 transitions. [2022-02-15 03:08:23,808 INFO L78 Accepts]: Start accepts. Automaton has 8234 states and 12182 transitions. Word has length 74 [2022-02-15 03:08:23,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:08:23,808 INFO L470 AbstractCegarLoop]: Abstraction has 8234 states and 12182 transitions. [2022-02-15 03:08:23,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-15 03:08:23,808 INFO L276 IsEmpty]: Start isEmpty. Operand 8234 states and 12182 transitions. [2022-02-15 03:08:23,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-15 03:08:23,812 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:08:23,812 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:08:23,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-02-15 03:08:23,812 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:08:23,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:08:23,812 INFO L85 PathProgramCache]: Analyzing trace with hash -189949733, now seen corresponding path program 1 times [2022-02-15 03:08:23,813 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:08:23,813 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [23246690] [2022-02-15 03:08:23,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:08:23,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:08:23,827 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:08:23,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:24,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:08:24,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:24,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:08:24,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:24,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 03:08:24,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:24,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 03:08:24,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:24,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:08:24,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:24,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-15 03:08:24,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:24,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-15 03:08:24,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:24,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 03:08:24,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:24,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:08:24,366 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:08:24,366 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [23246690] [2022-02-15 03:08:24,366 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [23246690] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:08:24,366 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:08:24,366 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-15 03:08:24,367 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847641305] [2022-02-15 03:08:24,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:08:24,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 03:08:24,367 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:08:24,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 03:08:24,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-02-15 03:08:24,368 INFO L87 Difference]: Start difference. First operand 8234 states and 12182 transitions. Second operand has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:08:35,767 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:08:49,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:08:49,403 INFO L93 Difference]: Finished difference Result 10371 states and 15718 transitions. [2022-02-15 03:08:49,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-15 03:08:49,404 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) Word has length 75 [2022-02-15 03:08:49,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:08:49,435 INFO L225 Difference]: With dead ends: 10371 [2022-02-15 03:08:49,435 INFO L226 Difference]: Without dead ends: 10367 [2022-02-15 03:08:49,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 640 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=542, Invalid=1810, Unknown=0, NotChecked=0, Total=2352 [2022-02-15 03:08:49,441 INFO L933 BasicCegarLoop]: 1091 mSDtfsCounter, 3695 mSDsluCounter, 1114 mSDsCounter, 0 mSdLazyCounter, 6779 mSolverCounterSat, 1753 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3737 SdHoareTripleChecker+Valid, 2205 SdHoareTripleChecker+Invalid, 8533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1753 IncrementalHoareTripleChecker+Valid, 6779 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.5s IncrementalHoareTripleChecker+Time [2022-02-15 03:08:49,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3737 Valid, 2205 Invalid, 8533 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1753 Valid, 6779 Invalid, 1 Unknown, 0 Unchecked, 17.5s Time] [2022-02-15 03:08:49,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10367 states. [2022-02-15 03:08:52,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10367 to 8236. [2022-02-15 03:08:52,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8236 states, 6546 states have (on average 1.43049190345249) internal successors, (9364), 6740 states have internal predecessors, (9364), 1043 states have call successors, (1043), 516 states have call predecessors, (1043), 646 states have return successors, (1777), 1015 states have call predecessors, (1777), 1029 states have call successors, (1777) [2022-02-15 03:08:52,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8236 states to 8236 states and 12184 transitions. [2022-02-15 03:08:52,255 INFO L78 Accepts]: Start accepts. Automaton has 8236 states and 12184 transitions. Word has length 75 [2022-02-15 03:08:52,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:08:52,255 INFO L470 AbstractCegarLoop]: Abstraction has 8236 states and 12184 transitions. [2022-02-15 03:08:52,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:08:52,256 INFO L276 IsEmpty]: Start isEmpty. Operand 8236 states and 12184 transitions. [2022-02-15 03:08:52,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-15 03:08:52,257 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:08:52,257 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:08:52,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-02-15 03:08:52,258 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:08:52,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:08:52,258 INFO L85 PathProgramCache]: Analyzing trace with hash -189672903, now seen corresponding path program 1 times [2022-02-15 03:08:52,258 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:08:52,258 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772730658] [2022-02-15 03:08:52,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:08:52,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:08:52,271 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:08:52,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:52,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:08:52,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:52,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:08:52,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:52,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 03:08:52,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:52,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 03:08:52,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:52,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:08:52,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:52,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-15 03:08:52,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:52,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-15 03:08:52,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:52,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 03:08:52,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:52,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:08:52,785 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:08:52,785 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1772730658] [2022-02-15 03:08:52,785 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1772730658] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:08:52,785 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:08:52,785 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 03:08:52,785 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810579002] [2022-02-15 03:08:52,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:08:52,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 03:08:52,785 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:08:52,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 03:08:52,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-02-15 03:08:52,786 INFO L87 Difference]: Start difference. First operand 8236 states and 12184 transitions. Second operand has 16 states, 16 states have (on average 3.5625) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-15 03:09:00,052 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:09:02,179 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:09:04,312 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:09:06,463 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:09:12,519 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:09:20,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:09:20,312 INFO L93 Difference]: Finished difference Result 9368 states and 14207 transitions. [2022-02-15 03:09:20,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-15 03:09:20,312 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.5625) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) Word has length 75 [2022-02-15 03:09:20,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:09:20,336 INFO L225 Difference]: With dead ends: 9368 [2022-02-15 03:09:20,336 INFO L226 Difference]: Without dead ends: 9354 [2022-02-15 03:09:20,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=125, Invalid=525, Unknown=0, NotChecked=0, Total=650 [2022-02-15 03:09:20,340 INFO L933 BasicCegarLoop]: 705 mSDtfsCounter, 2296 mSDsluCounter, 1466 mSDsCounter, 0 mSdLazyCounter, 6821 mSolverCounterSat, 983 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2335 SdHoareTripleChecker+Valid, 2171 SdHoareTripleChecker+Invalid, 7809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 983 IncrementalHoareTripleChecker+Valid, 6821 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.6s IncrementalHoareTripleChecker+Time [2022-02-15 03:09:20,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2335 Valid, 2171 Invalid, 7809 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [983 Valid, 6821 Invalid, 5 Unknown, 0 Unchecked, 22.6s Time] [2022-02-15 03:09:20,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9354 states. [2022-02-15 03:09:23,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9354 to 8238. [2022-02-15 03:09:23,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8238 states, 6547 states have (on average 1.4304261493813961) internal successors, (9365), 6742 states have internal predecessors, (9365), 1043 states have call successors, (1043), 516 states have call predecessors, (1043), 647 states have return successors, (1793), 1015 states have call predecessors, (1793), 1029 states have call successors, (1793) [2022-02-15 03:09:23,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8238 states to 8238 states and 12201 transitions. [2022-02-15 03:09:23,349 INFO L78 Accepts]: Start accepts. Automaton has 8238 states and 12201 transitions. Word has length 75 [2022-02-15 03:09:23,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:09:23,349 INFO L470 AbstractCegarLoop]: Abstraction has 8238 states and 12201 transitions. [2022-02-15 03:09:23,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.5625) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-15 03:09:23,349 INFO L276 IsEmpty]: Start isEmpty. Operand 8238 states and 12201 transitions. [2022-02-15 03:09:23,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-15 03:09:23,351 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:09:23,351 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:09:23,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-02-15 03:09:23,351 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:09:23,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:09:23,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1279361975, now seen corresponding path program 1 times [2022-02-15 03:09:23,352 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:09:23,352 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1412896274] [2022-02-15 03:09:23,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:09:23,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:09:23,366 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:09:23,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:23,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:09:23,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:23,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:09:23,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:23,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 03:09:23,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:23,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 03:09:23,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:23,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:09:23,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:23,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-15 03:09:23,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:23,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-02-15 03:09:23,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:23,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-15 03:09:23,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:23,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:09:23,969 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:09:23,969 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1412896274] [2022-02-15 03:09:23,969 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1412896274] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:09:23,969 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:09:23,969 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 03:09:23,969 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304440663] [2022-02-15 03:09:23,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:09:23,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 03:09:23,969 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:09:23,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 03:09:23,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-02-15 03:09:23,970 INFO L87 Difference]: Start difference. First operand 8238 states and 12201 transitions. Second operand has 16 states, 16 states have (on average 3.5625) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-15 03:09:36,476 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:09:44,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:09:44,538 INFO L93 Difference]: Finished difference Result 9361 states and 14151 transitions. [2022-02-15 03:09:44,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-15 03:09:44,539 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.5625) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) Word has length 75 [2022-02-15 03:09:44,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:09:44,566 INFO L225 Difference]: With dead ends: 9361 [2022-02-15 03:09:44,566 INFO L226 Difference]: Without dead ends: 9308 [2022-02-15 03:09:44,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=126, Invalid=524, Unknown=0, NotChecked=0, Total=650 [2022-02-15 03:09:44,571 INFO L933 BasicCegarLoop]: 697 mSDtfsCounter, 2030 mSDsluCounter, 1481 mSDsCounter, 0 mSdLazyCounter, 7413 mSolverCounterSat, 886 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2069 SdHoareTripleChecker+Valid, 2178 SdHoareTripleChecker+Invalid, 8300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 886 IncrementalHoareTripleChecker+Valid, 7413 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.5s IncrementalHoareTripleChecker+Time [2022-02-15 03:09:44,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2069 Valid, 2178 Invalid, 8300 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [886 Valid, 7413 Invalid, 1 Unknown, 0 Unchecked, 15.5s Time] [2022-02-15 03:09:44,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9308 states. [2022-02-15 03:09:47,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9308 to 8201. [2022-02-15 03:09:47,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8201 states, 6515 states have (on average 1.4308518802762855) internal successors, (9322), 6710 states have internal predecessors, (9322), 1040 states have call successors, (1040), 514 states have call predecessors, (1040), 645 states have return successors, (1789), 1012 states have call predecessors, (1789), 1026 states have call successors, (1789) [2022-02-15 03:09:47,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8201 states to 8201 states and 12151 transitions. [2022-02-15 03:09:47,457 INFO L78 Accepts]: Start accepts. Automaton has 8201 states and 12151 transitions. Word has length 75 [2022-02-15 03:09:47,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:09:47,457 INFO L470 AbstractCegarLoop]: Abstraction has 8201 states and 12151 transitions. [2022-02-15 03:09:47,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.5625) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-15 03:09:47,457 INFO L276 IsEmpty]: Start isEmpty. Operand 8201 states and 12151 transitions. [2022-02-15 03:09:47,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-02-15 03:09:47,459 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:09:47,459 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] [2022-02-15 03:09:47,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-02-15 03:09:47,459 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:09:47,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:09:47,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1573546191, now seen corresponding path program 1 times [2022-02-15 03:09:47,459 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:09:47,459 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1083108276] [2022-02-15 03:09:47,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:09:47,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:09:47,471 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:09:47,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:47,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:09:47,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:47,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:09:47,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:47,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 03:09:47,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:47,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 03:09:47,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:47,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:09:47,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:47,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-15 03:09:47,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:47,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-15 03:09:47,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:47,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-15 03:09:47,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:47,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 03:09:47,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:47,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:09:47,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:47,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:09:47,968 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:09:47,969 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1083108276] [2022-02-15 03:09:47,969 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1083108276] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:09:47,969 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:09:47,969 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-15 03:09:47,969 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426022146] [2022-02-15 03:09:47,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:09:47,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-15 03:09:47,969 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:09:47,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-15 03:09:47,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-02-15 03:09:47,970 INFO L87 Difference]: Start difference. First operand 8201 states and 12151 transitions. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (12), 10 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-02-15 03:09:56,209 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:10:07,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:10:07,631 INFO L93 Difference]: Finished difference Result 13122 states and 19707 transitions. [2022-02-15 03:10:07,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-15 03:10:07,631 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (12), 10 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 78 [2022-02-15 03:10:07,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:10:07,657 INFO L225 Difference]: With dead ends: 13122 [2022-02-15 03:10:07,657 INFO L226 Difference]: Without dead ends: 9178 [2022-02-15 03:10:07,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=180, Invalid=522, Unknown=0, NotChecked=0, Total=702 [2022-02-15 03:10:07,671 INFO L933 BasicCegarLoop]: 1111 mSDtfsCounter, 2665 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 3677 mSolverCounterSat, 1272 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2718 SdHoareTripleChecker+Valid, 1796 SdHoareTripleChecker+Invalid, 4950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1272 IncrementalHoareTripleChecker+Valid, 3677 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2022-02-15 03:10:07,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2718 Valid, 1796 Invalid, 4950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1272 Valid, 3677 Invalid, 1 Unknown, 0 Unchecked, 13.6s Time] [2022-02-15 03:10:07,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9178 states. [2022-02-15 03:10:10,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9178 to 7554. [2022-02-15 03:10:10,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7554 states, 5990 states have (on average 1.4275459098497496) internal successors, (8551), 6180 states have internal predecessors, (8551), 967 states have call successors, (967), 473 states have call predecessors, (967), 596 states have return successors, (1566), 932 states have call predecessors, (1566), 945 states have call successors, (1566) [2022-02-15 03:10:10,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7554 states to 7554 states and 11084 transitions. [2022-02-15 03:10:10,482 INFO L78 Accepts]: Start accepts. Automaton has 7554 states and 11084 transitions. Word has length 78 [2022-02-15 03:10:10,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:10:10,482 INFO L470 AbstractCegarLoop]: Abstraction has 7554 states and 11084 transitions. [2022-02-15 03:10:10,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (12), 10 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-02-15 03:10:10,483 INFO L276 IsEmpty]: Start isEmpty. Operand 7554 states and 11084 transitions. [2022-02-15 03:10:10,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-15 03:10:10,484 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:10:10,484 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] [2022-02-15 03:10:10,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-02-15 03:10:10,484 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:10:10,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:10:10,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1608608426, now seen corresponding path program 1 times [2022-02-15 03:10:10,485 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:10:10,485 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [894797200] [2022-02-15 03:10:10,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:10:10,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:10:10,502 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:10:10,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:10,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:10:10,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:10,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:10:10,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:10,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 03:10:10,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:10,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 03:10:10,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:10,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:10:10,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:10,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-15 03:10:10,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:10,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-15 03:10:10,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:11,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-15 03:10:11,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:11,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 03:10:11,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:11,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:10:11,038 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:10:11,038 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [894797200] [2022-02-15 03:10:11,038 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [894797200] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:10:11,038 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:10:11,038 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-15 03:10:11,038 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79653383] [2022-02-15 03:10:11,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:10:11,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 03:10:11,039 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:10:11,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 03:10:11,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-02-15 03:10:11,039 INFO L87 Difference]: Start difference. First operand 7554 states and 11084 transitions. Second operand has 10 states, 10 states have (on average 5.9) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2022-02-15 03:10:16,420 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:10:18,199 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:10:23,620 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:10:30,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:10:30,944 INFO L93 Difference]: Finished difference Result 14952 states and 22337 transitions. [2022-02-15 03:10:30,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-15 03:10:30,945 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.9) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) Word has length 79 [2022-02-15 03:10:30,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:10:30,983 INFO L225 Difference]: With dead ends: 14952 [2022-02-15 03:10:30,983 INFO L226 Difference]: Without dead ends: 8566 [2022-02-15 03:10:31,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2022-02-15 03:10:31,012 INFO L933 BasicCegarLoop]: 664 mSDtfsCounter, 1776 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 2512 mSolverCounterSat, 782 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1811 SdHoareTripleChecker+Valid, 1176 SdHoareTripleChecker+Invalid, 3296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 782 IncrementalHoareTripleChecker+Valid, 2512 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2022-02-15 03:10:31,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1811 Valid, 1176 Invalid, 3296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [782 Valid, 2512 Invalid, 2 Unknown, 0 Unchecked, 14.4s Time] [2022-02-15 03:10:31,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8566 states. [2022-02-15 03:10:33,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8566 to 7512. [2022-02-15 03:10:33,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7512 states, 5944 states have (on average 1.4268169582772543) internal successors, (8481), 6152 states have internal predecessors, (8481), 971 states have call successors, (971), 473 states have call predecessors, (971), 596 states have return successors, (1570), 918 states have call predecessors, (1570), 949 states have call successors, (1570) [2022-02-15 03:10:33,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7512 states to 7512 states and 11022 transitions. [2022-02-15 03:10:33,983 INFO L78 Accepts]: Start accepts. Automaton has 7512 states and 11022 transitions. Word has length 79 [2022-02-15 03:10:33,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:10:33,983 INFO L470 AbstractCegarLoop]: Abstraction has 7512 states and 11022 transitions. [2022-02-15 03:10:33,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.9) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2022-02-15 03:10:33,983 INFO L276 IsEmpty]: Start isEmpty. Operand 7512 states and 11022 transitions. [2022-02-15 03:10:33,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-02-15 03:10:33,985 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:10:33,985 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] [2022-02-15 03:10:33,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-02-15 03:10:33,986 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:10:33,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:10:33,986 INFO L85 PathProgramCache]: Analyzing trace with hash -697853230, now seen corresponding path program 1 times [2022-02-15 03:10:33,986 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:10:33,986 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1320484164] [2022-02-15 03:10:33,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:10:33,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:10:34,005 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:10:34,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:34,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:10:34,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:34,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:10:34,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:34,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 03:10:34,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:34,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 03:10:34,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:34,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:10:34,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:34,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-15 03:10:34,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:34,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-15 03:10:34,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:34,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 03:10:34,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:34,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:10:34,617 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:10:34,617 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1320484164] [2022-02-15 03:10:34,618 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1320484164] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:10:34,621 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:10:34,621 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-15 03:10:34,623 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972506770] [2022-02-15 03:10:34,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:10:34,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-15 03:10:34,623 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:10:34,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-15 03:10:34,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-02-15 03:10:34,624 INFO L87 Difference]: Start difference. First operand 7512 states and 11022 transitions. Second operand has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:10:45,376 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:10:53,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:10:53,398 INFO L93 Difference]: Finished difference Result 11798 states and 17680 transitions. [2022-02-15 03:10:53,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-15 03:10:53,398 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 80 [2022-02-15 03:10:53,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:10:53,427 INFO L225 Difference]: With dead ends: 11798 [2022-02-15 03:10:53,428 INFO L226 Difference]: Without dead ends: 8776 [2022-02-15 03:10:53,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2022-02-15 03:10:53,441 INFO L933 BasicCegarLoop]: 654 mSDtfsCounter, 2194 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 2469 mSolverCounterSat, 1035 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2227 SdHoareTripleChecker+Valid, 1336 SdHoareTripleChecker+Invalid, 3505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1035 IncrementalHoareTripleChecker+Valid, 2469 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2022-02-15 03:10:53,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2227 Valid, 1336 Invalid, 3505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1035 Valid, 2469 Invalid, 1 Unknown, 0 Unchecked, 12.7s Time] [2022-02-15 03:10:53,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8776 states. [2022-02-15 03:10:56,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8776 to 7712. [2022-02-15 03:10:56,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7712 states, 6144 states have (on average 1.4259440104166667) internal successors, (8761), 6352 states have internal predecessors, (8761), 971 states have call successors, (971), 473 states have call predecessors, (971), 596 states have return successors, (1570), 918 states have call predecessors, (1570), 949 states have call successors, (1570) [2022-02-15 03:10:56,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7712 states to 7712 states and 11302 transitions. [2022-02-15 03:10:56,635 INFO L78 Accepts]: Start accepts. Automaton has 7712 states and 11302 transitions. Word has length 80 [2022-02-15 03:10:56,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:10:56,635 INFO L470 AbstractCegarLoop]: Abstraction has 7712 states and 11302 transitions. [2022-02-15 03:10:56,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:10:56,635 INFO L276 IsEmpty]: Start isEmpty. Operand 7712 states and 11302 transitions. [2022-02-15 03:10:56,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-02-15 03:10:56,637 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:10:56,637 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] [2022-02-15 03:10:56,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-02-15 03:10:56,637 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:10:56,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:10:56,637 INFO L85 PathProgramCache]: Analyzing trace with hash -192162812, now seen corresponding path program 1 times [2022-02-15 03:10:56,637 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:10:56,638 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1945749746] [2022-02-15 03:10:56,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:10:56,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:10:56,652 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:10:56,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:56,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:10:56,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:56,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:10:56,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:56,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 03:10:57,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:57,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 03:10:57,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:57,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:10:57,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:57,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-15 03:10:57,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:57,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-02-15 03:10:57,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:57,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 03:10:57,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:57,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-02-15 03:10:57,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:57,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:10:57,179 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:10:57,179 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1945749746] [2022-02-15 03:10:57,180 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1945749746] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:10:57,180 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:10:57,180 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-15 03:10:57,180 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044386945] [2022-02-15 03:10:57,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:10:57,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-15 03:10:57,180 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:10:57,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-15 03:10:57,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-02-15 03:10:57,181 INFO L87 Difference]: Start difference. First operand 7712 states and 11302 transitions. Second operand has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 4 states have internal predecessors, (61), 3 states have call successors, (14), 9 states have call predecessors, (14), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-02-15 03:11:07,715 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:11:20,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:11:20,713 INFO L93 Difference]: Finished difference Result 10749 states and 15830 transitions. [2022-02-15 03:11:20,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-15 03:11:20,714 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 4 states have internal predecessors, (61), 3 states have call successors, (14), 9 states have call predecessors, (14), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 84 [2022-02-15 03:11:20,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:11:20,740 INFO L225 Difference]: With dead ends: 10749 [2022-02-15 03:11:20,740 INFO L226 Difference]: Without dead ends: 6565 [2022-02-15 03:11:20,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=271, Invalid=989, Unknown=0, NotChecked=0, Total=1260 [2022-02-15 03:11:20,755 INFO L933 BasicCegarLoop]: 978 mSDtfsCounter, 3851 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 4684 mSolverCounterSat, 1522 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3899 SdHoareTripleChecker+Valid, 1700 SdHoareTripleChecker+Invalid, 6207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1522 IncrementalHoareTripleChecker+Valid, 4684 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.7s IncrementalHoareTripleChecker+Time [2022-02-15 03:11:20,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3899 Valid, 1700 Invalid, 6207 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1522 Valid, 4684 Invalid, 1 Unknown, 0 Unchecked, 17.7s Time] [2022-02-15 03:11:20,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6565 states. [2022-02-15 03:11:23,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6565 to 5574. [2022-02-15 03:11:23,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5574 states, 4474 states have (on average 1.4172999552972732) internal successors, (6341), 4595 states have internal predecessors, (6341), 676 states have call successors, (676), 351 states have call predecessors, (676), 423 states have return successors, (914), 649 states have call predecessors, (914), 658 states have call successors, (914) [2022-02-15 03:11:23,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5574 states to 5574 states and 7931 transitions. [2022-02-15 03:11:23,136 INFO L78 Accepts]: Start accepts. Automaton has 5574 states and 7931 transitions. Word has length 84 [2022-02-15 03:11:23,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:11:23,136 INFO L470 AbstractCegarLoop]: Abstraction has 5574 states and 7931 transitions. [2022-02-15 03:11:23,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 4 states have internal predecessors, (61), 3 states have call successors, (14), 9 states have call predecessors, (14), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-02-15 03:11:23,136 INFO L276 IsEmpty]: Start isEmpty. Operand 5574 states and 7931 transitions. [2022-02-15 03:11:23,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-02-15 03:11:23,138 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:11:23,138 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] [2022-02-15 03:11:23,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-02-15 03:11:23,138 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:11:23,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:11:23,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1582799931, now seen corresponding path program 1 times [2022-02-15 03:11:23,138 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:11:23,138 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269105411] [2022-02-15 03:11:23,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:11:23,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:11:23,157 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:11:23,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:23,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:11:23,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:23,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:11:23,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:23,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 03:11:23,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:23,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 03:11:23,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:23,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:11:23,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:23,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-15 03:11:23,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:23,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-15 03:11:23,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:23,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-02-15 03:11:23,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:23,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:11:23,874 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:11:23,874 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269105411] [2022-02-15 03:11:23,874 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [269105411] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:11:23,874 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:11:23,874 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-15 03:11:23,874 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085224375] [2022-02-15 03:11:23,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:11:23,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-15 03:11:23,875 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:11:23,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-15 03:11:23,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-02-15 03:11:23,875 INFO L87 Difference]: Start difference. First operand 5574 states and 7931 transitions. Second operand has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:11:28,981 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:11:33,692 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:11:40,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:11:40,122 INFO L93 Difference]: Finished difference Result 9506 states and 13753 transitions. [2022-02-15 03:11:40,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-15 03:11:40,123 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 81 [2022-02-15 03:11:40,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:11:40,149 INFO L225 Difference]: With dead ends: 9506 [2022-02-15 03:11:40,150 INFO L226 Difference]: Without dead ends: 6553 [2022-02-15 03:11:40,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2022-02-15 03:11:40,163 INFO L933 BasicCegarLoop]: 667 mSDtfsCounter, 1734 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 3030 mSolverCounterSat, 770 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1771 SdHoareTripleChecker+Valid, 1367 SdHoareTripleChecker+Invalid, 3802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 770 IncrementalHoareTripleChecker+Valid, 3030 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2022-02-15 03:11:40,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1771 Valid, 1367 Invalid, 3802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [770 Valid, 3030 Invalid, 2 Unknown, 0 Unchecked, 11.7s Time] [2022-02-15 03:11:40,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6553 states. [2022-02-15 03:11:42,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6553 to 5530. [2022-02-15 03:11:42,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5530 states, 4430 states have (on average 1.4187358916478556) internal successors, (6285), 4551 states have internal predecessors, (6285), 676 states have call successors, (676), 351 states have call predecessors, (676), 423 states have return successors, (914), 649 states have call predecessors, (914), 658 states have call successors, (914) [2022-02-15 03:11:42,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5530 states to 5530 states and 7875 transitions. [2022-02-15 03:11:42,601 INFO L78 Accepts]: Start accepts. Automaton has 5530 states and 7875 transitions. Word has length 81 [2022-02-15 03:11:42,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:11:42,602 INFO L470 AbstractCegarLoop]: Abstraction has 5530 states and 7875 transitions. [2022-02-15 03:11:42,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:11:42,602 INFO L276 IsEmpty]: Start isEmpty. Operand 5530 states and 7875 transitions. [2022-02-15 03:11:42,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-02-15 03:11:42,603 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:11:42,603 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] [2022-02-15 03:11:42,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-02-15 03:11:42,603 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:11:42,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:11:42,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1178730404, now seen corresponding path program 1 times [2022-02-15 03:11:42,604 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:11:42,604 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2129941040] [2022-02-15 03:11:42,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:11:42,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:11:42,619 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:11:42,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:42,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:11:42,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:42,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:11:42,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:43,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 03:11:43,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:43,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 03:11:43,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:43,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:11:43,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:43,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-15 03:11:43,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:43,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-02-15 03:11:43,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:43,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 03:11:43,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:43,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:11:43,329 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:11:43,329 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2129941040] [2022-02-15 03:11:43,329 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2129941040] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:11:43,329 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:11:43,329 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 03:11:43,329 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426438119] [2022-02-15 03:11:43,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:11:43,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 03:11:43,329 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:11:43,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 03:11:43,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-02-15 03:11:43,330 INFO L87 Difference]: Start difference. First operand 5530 states and 7875 transitions. Second operand has 16 states, 16 states have (on average 3.9375) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-15 03:11:53,567 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:12:02,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:12:02,703 INFO L93 Difference]: Finished difference Result 6456 states and 9402 transitions. [2022-02-15 03:12:02,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-15 03:12:02,704 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.9375) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) Word has length 81 [2022-02-15 03:12:02,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:12:02,722 INFO L225 Difference]: With dead ends: 6456 [2022-02-15 03:12:02,723 INFO L226 Difference]: Without dead ends: 6436 [2022-02-15 03:12:02,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=126, Invalid=524, Unknown=0, NotChecked=0, Total=650 [2022-02-15 03:12:02,726 INFO L933 BasicCegarLoop]: 664 mSDtfsCounter, 1623 mSDsluCounter, 1533 mSDsCounter, 0 mSdLazyCounter, 6856 mSolverCounterSat, 762 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1662 SdHoareTripleChecker+Valid, 2197 SdHoareTripleChecker+Invalid, 7619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 762 IncrementalHoareTripleChecker+Valid, 6856 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.5s IncrementalHoareTripleChecker+Time [2022-02-15 03:12:02,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1662 Valid, 2197 Invalid, 7619 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [762 Valid, 6856 Invalid, 1 Unknown, 0 Unchecked, 14.5s Time] [2022-02-15 03:12:02,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6436 states. [2022-02-15 03:12:05,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6436 to 5526. [2022-02-15 03:12:05,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5526 states, 4427 states have (on average 1.418793765529704) internal successors, (6281), 4548 states have internal predecessors, (6281), 675 states have call successors, (675), 351 states have call predecessors, (675), 423 states have return successors, (913), 648 states have call predecessors, (913), 657 states have call successors, (913) [2022-02-15 03:12:05,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5526 states to 5526 states and 7869 transitions. [2022-02-15 03:12:05,171 INFO L78 Accepts]: Start accepts. Automaton has 5526 states and 7869 transitions. Word has length 81 [2022-02-15 03:12:05,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:12:05,171 INFO L470 AbstractCegarLoop]: Abstraction has 5526 states and 7869 transitions. [2022-02-15 03:12:05,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.9375) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-15 03:12:05,171 INFO L276 IsEmpty]: Start isEmpty. Operand 5526 states and 7869 transitions. [2022-02-15 03:12:05,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-02-15 03:12:05,173 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:12:05,173 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] [2022-02-15 03:12:05,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-02-15 03:12:05,173 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:12:05,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:12:05,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1957637781, now seen corresponding path program 1 times [2022-02-15 03:12:05,173 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:12:05,173 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1713018954] [2022-02-15 03:12:05,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:12:05,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:12:05,189 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:12:05,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:05,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:12:05,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:05,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:12:05,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:05,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 03:12:05,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:05,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 03:12:05,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:05,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:12:05,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:05,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-15 03:12:05,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:05,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-15 03:12:05,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:05,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-15 03:12:05,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:05,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:12:05,772 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:12:05,772 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1713018954] [2022-02-15 03:12:05,772 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1713018954] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:12:05,773 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:12:05,773 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-15 03:12:05,773 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017047971] [2022-02-15 03:12:05,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:12:05,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-15 03:12:05,773 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:12:05,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-15 03:12:05,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-02-15 03:12:05,774 INFO L87 Difference]: Start difference. First operand 5526 states and 7869 transitions. Second operand has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:12:19,710 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:12:27,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:12:27,508 INFO L93 Difference]: Finished difference Result 6529 states and 9558 transitions. [2022-02-15 03:12:27,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-15 03:12:27,508 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 82 [2022-02-15 03:12:27,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:12:27,523 INFO L225 Difference]: With dead ends: 6529 [2022-02-15 03:12:27,523 INFO L226 Difference]: Without dead ends: 6513 [2022-02-15 03:12:27,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=146, Invalid=556, Unknown=0, NotChecked=0, Total=702 [2022-02-15 03:12:27,525 INFO L933 BasicCegarLoop]: 663 mSDtfsCounter, 1965 mSDsluCounter, 1239 mSDsCounter, 0 mSdLazyCounter, 4834 mSolverCounterSat, 866 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2003 SdHoareTripleChecker+Valid, 1902 SdHoareTripleChecker+Invalid, 5701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 866 IncrementalHoareTripleChecker+Valid, 4834 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.3s IncrementalHoareTripleChecker+Time [2022-02-15 03:12:27,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2003 Valid, 1902 Invalid, 5701 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [866 Valid, 4834 Invalid, 1 Unknown, 0 Unchecked, 16.3s Time] [2022-02-15 03:12:27,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6513 states. [2022-02-15 03:12:30,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6513 to 5531. [2022-02-15 03:12:30,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5531 states, 4430 states have (on average 1.418961625282167) internal successors, (6286), 4552 states have internal predecessors, (6286), 677 states have call successors, (677), 351 states have call predecessors, (677), 423 states have return successors, (915), 649 states have call predecessors, (915), 659 states have call successors, (915) [2022-02-15 03:12:30,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5531 states to 5531 states and 7878 transitions. [2022-02-15 03:12:30,299 INFO L78 Accepts]: Start accepts. Automaton has 5531 states and 7878 transitions. Word has length 82 [2022-02-15 03:12:30,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:12:30,299 INFO L470 AbstractCegarLoop]: Abstraction has 5531 states and 7878 transitions. [2022-02-15 03:12:30,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:12:30,300 INFO L276 IsEmpty]: Start isEmpty. Operand 5531 states and 7878 transitions. [2022-02-15 03:12:30,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-02-15 03:12:30,301 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:12:30,301 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] [2022-02-15 03:12:30,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-02-15 03:12:30,302 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:12:30,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:12:30,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1156094369, now seen corresponding path program 1 times [2022-02-15 03:12:30,302 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:12:30,302 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1427681170] [2022-02-15 03:12:30,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:12:30,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:12:30,323 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:12:30,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:30,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:12:30,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:30,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:12:30,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:30,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 03:12:30,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:30,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 03:12:31,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:31,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:12:31,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:31,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-15 03:12:31,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:31,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-15 03:12:31,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:31,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:12:31,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:31,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-15 03:12:31,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:31,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:12:31,524 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:12:31,524 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1427681170] [2022-02-15 03:12:31,524 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1427681170] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:12:31,524 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:12:31,524 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-15 03:12:31,524 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451021448] [2022-02-15 03:12:31,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:12:31,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-15 03:12:31,525 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:12:31,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-15 03:12:31,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-02-15 03:12:31,526 INFO L87 Difference]: Start difference. First operand 5531 states and 7878 transitions. Second operand has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (11), 11 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-02-15 03:12:38,538 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:12:40,749 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:12:42,936 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:12:51,080 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:13:00,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:13:00,228 INFO L93 Difference]: Finished difference Result 9656 states and 14140 transitions. [2022-02-15 03:13:00,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-15 03:13:00,229 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (11), 11 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 84 [2022-02-15 03:13:00,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:13:00,262 INFO L225 Difference]: With dead ends: 9656 [2022-02-15 03:13:00,263 INFO L226 Difference]: Without dead ends: 6734 [2022-02-15 03:13:00,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=178, Invalid=752, Unknown=0, NotChecked=0, Total=930 [2022-02-15 03:13:00,276 INFO L933 BasicCegarLoop]: 652 mSDtfsCounter, 1775 mSDsluCounter, 1112 mSDsCounter, 0 mSdLazyCounter, 5084 mSolverCounterSat, 770 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1808 SdHoareTripleChecker+Valid, 1764 SdHoareTripleChecker+Invalid, 5858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 770 IncrementalHoareTripleChecker+Valid, 5084 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.0s IncrementalHoareTripleChecker+Time [2022-02-15 03:13:00,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1808 Valid, 1764 Invalid, 5858 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [770 Valid, 5084 Invalid, 4 Unknown, 0 Unchecked, 23.0s Time] [2022-02-15 03:13:00,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6734 states. [2022-02-15 03:13:02,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6734 to 5549. [2022-02-15 03:13:02,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5549 states, 4448 states have (on average 1.4195143884892085) internal successors, (6314), 4570 states have internal predecessors, (6314), 677 states have call successors, (677), 351 states have call predecessors, (677), 423 states have return successors, (915), 649 states have call predecessors, (915), 659 states have call successors, (915) [2022-02-15 03:13:02,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5549 states to 5549 states and 7906 transitions. [2022-02-15 03:13:02,840 INFO L78 Accepts]: Start accepts. Automaton has 5549 states and 7906 transitions. Word has length 84 [2022-02-15 03:13:02,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:13:02,840 INFO L470 AbstractCegarLoop]: Abstraction has 5549 states and 7906 transitions. [2022-02-15 03:13:02,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (11), 11 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-02-15 03:13:02,841 INFO L276 IsEmpty]: Start isEmpty. Operand 5549 states and 7906 transitions. [2022-02-15 03:13:02,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-02-15 03:13:02,842 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:13:02,842 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] [2022-02-15 03:13:02,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-02-15 03:13:02,842 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:13:02,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:13:02,842 INFO L85 PathProgramCache]: Analyzing trace with hash -252551860, now seen corresponding path program 1 times [2022-02-15 03:13:02,843 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:13:02,843 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1959167336] [2022-02-15 03:13:02,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:13:02,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:13:02,858 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:13:02,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:13:03,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:13:03,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:13:03,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:13:03,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:13:03,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 03:13:03,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:13:03,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 03:13:03,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:13:03,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:13:03,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:13:03,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-15 03:13:03,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:13:03,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-15 03:13:03,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:13:03,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-15 03:13:03,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:13:03,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:13:03,424 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:13:03,424 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1959167336] [2022-02-15 03:13:03,424 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1959167336] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:13:03,424 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:13:03,425 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-15 03:13:03,425 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24418219] [2022-02-15 03:13:03,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:13:03,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 03:13:03,425 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:13:03,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 03:13:03,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-02-15 03:13:03,425 INFO L87 Difference]: Start difference. First operand 5549 states and 7906 transitions. Second operand has 13 states, 13 states have (on average 5.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-15 03:13:13,810 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 [] [2022-02-15 03:13:22,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:13:22,397 INFO L93 Difference]: Finished difference Result 11645 states and 16990 transitions. [2022-02-15 03:13:22,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-15 03:13:22,397 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) Word has length 83 [2022-02-15 03:13:22,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:13:22,414 INFO L225 Difference]: With dead ends: 11645 [2022-02-15 03:13:22,414 INFO L226 Difference]: Without dead ends: 6654 [2022-02-15 03:13:22,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2022-02-15 03:13:22,424 INFO L933 BasicCegarLoop]: 648 mSDtfsCounter, 1769 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 4042 mSolverCounterSat, 796 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1803 SdHoareTripleChecker+Valid, 1501 SdHoareTripleChecker+Invalid, 4839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 796 IncrementalHoareTripleChecker+Valid, 4042 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2022-02-15 03:13:22,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1803 Valid, 1501 Invalid, 4839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [796 Valid, 4042 Invalid, 1 Unknown, 0 Unchecked, 13.6s Time] [2022-02-15 03:13:22,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6654 states. [2022-02-15 03:13:24,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6654 to 5561. [2022-02-15 03:13:24,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5561 states, 4460 states have (on average 1.4183856502242151) internal successors, (6326), 4570 states have internal predecessors, (6326), 677 states have call successors, (677), 351 states have call predecessors, (677), 423 states have return successors, (915), 661 states have call predecessors, (915), 659 states have call successors, (915) [2022-02-15 03:13:24,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5561 states to 5561 states and 7918 transitions. [2022-02-15 03:13:24,901 INFO L78 Accepts]: Start accepts. Automaton has 5561 states and 7918 transitions. Word has length 83 [2022-02-15 03:13:24,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:13:24,904 INFO L470 AbstractCegarLoop]: Abstraction has 5561 states and 7918 transitions. [2022-02-15 03:13:24,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-15 03:13:24,904 INFO L276 IsEmpty]: Start isEmpty. Operand 5561 states and 7918 transitions. [2022-02-15 03:13:24,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-02-15 03:13:24,906 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:13:24,906 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:13:24,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-02-15 03:13:24,906 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:13:24,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:13:24,907 INFO L85 PathProgramCache]: Analyzing trace with hash 5334329, now seen corresponding path program 1 times [2022-02-15 03:13:24,907 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:13:24,907 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1036219462] [2022-02-15 03:13:24,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:13:24,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:13:24,924 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:13:24,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:13:25,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:13:25,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:13:25,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:13:25,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:13:25,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 03:13:25,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:13:25,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 03:13:25,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:13:25,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:13:25,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:13:25,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-15 03:13:25,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:13:25,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-02-15 03:13:25,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:13:25,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 03:13:25,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:13:25,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-02-15 03:13:25,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:13:25,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:13:25,619 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:13:25,619 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1036219462] [2022-02-15 03:13:25,619 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1036219462] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:13:25,619 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:13:25,619 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-15 03:13:25,619 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50495429] [2022-02-15 03:13:25,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:13:25,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-15 03:13:25,620 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:13:25,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-15 03:13:25,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-02-15 03:13:25,620 INFO L87 Difference]: Start difference. First operand 5561 states and 7918 transitions. Second operand has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (11), 11 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-02-15 03:13:40,254 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:13:49,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:13:49,856 INFO L93 Difference]: Finished difference Result 6529 states and 9492 transitions. [2022-02-15 03:13:49,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-15 03:13:49,856 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (11), 11 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 84 [2022-02-15 03:13:49,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:13:49,874 INFO L225 Difference]: With dead ends: 6529 [2022-02-15 03:13:49,874 INFO L226 Difference]: Without dead ends: 6507 [2022-02-15 03:13:49,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650 [2022-02-15 03:13:49,877 INFO L933 BasicCegarLoop]: 666 mSDtfsCounter, 1241 mSDsluCounter, 1372 mSDsCounter, 0 mSdLazyCounter, 6516 mSolverCounterSat, 512 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1279 SdHoareTripleChecker+Valid, 2038 SdHoareTripleChecker+Invalid, 7029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 512 IncrementalHoareTripleChecker+Valid, 6516 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.0s IncrementalHoareTripleChecker+Time [2022-02-15 03:13:49,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1279 Valid, 2038 Invalid, 7029 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [512 Valid, 6516 Invalid, 1 Unknown, 0 Unchecked, 19.0s Time] [2022-02-15 03:13:49,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6507 states. [2022-02-15 03:13:52,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6507 to 5560. [2022-02-15 03:13:52,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5560 states, 4460 states have (on average 1.4181614349775784) internal successors, (6325), 4569 states have internal predecessors, (6325), 676 states have call successors, (676), 351 states have call predecessors, (676), 423 states have return successors, (914), 661 states have call predecessors, (914), 658 states have call successors, (914) [2022-02-15 03:13:52,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5560 states to 5560 states and 7915 transitions. [2022-02-15 03:13:52,538 INFO L78 Accepts]: Start accepts. Automaton has 5560 states and 7915 transitions. Word has length 84 [2022-02-15 03:13:52,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:13:52,539 INFO L470 AbstractCegarLoop]: Abstraction has 5560 states and 7915 transitions. [2022-02-15 03:13:52,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (11), 11 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-02-15 03:13:52,539 INFO L276 IsEmpty]: Start isEmpty. Operand 5560 states and 7915 transitions. [2022-02-15 03:13:52,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-02-15 03:13:52,540 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:13:52,541 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] [2022-02-15 03:13:52,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-02-15 03:13:52,541 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:13:52,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:13:52,541 INFO L85 PathProgramCache]: Analyzing trace with hash 174205264, now seen corresponding path program 1 times [2022-02-15 03:13:52,541 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:13:52,541 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [123211475] [2022-02-15 03:13:52,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:13:52,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:13:52,559 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:13:52,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:13:52,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:13:52,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:13:52,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:13:52,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:13:52,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 03:13:52,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:13:52,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 03:13:52,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:13:52,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:13:52,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:13:52,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-15 03:13:52,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:13:52,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-15 03:13:52,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:13:53,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-15 03:13:53,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:13:53,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:13:53,023 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:13:53,023 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [123211475] [2022-02-15 03:13:53,023 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [123211475] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:13:53,023 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:13:53,023 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-15 03:13:53,024 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441392348] [2022-02-15 03:13:53,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:13:53,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-15 03:13:53,024 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:13:53,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-15 03:13:53,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-02-15 03:13:53,024 INFO L87 Difference]: Start difference. First operand 5560 states and 7915 transitions. Second operand has 11 states, 11 states have (on average 6.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:14:03,871 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []