/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-05ce600 [2022-02-24 02:04:59,803 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-24 02:04:59,810 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-24 02:04:59,856 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-24 02:04:59,864 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-24 02:04:59,864 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-24 02:04:59,865 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-24 02:04:59,866 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-24 02:04:59,866 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-24 02:04:59,867 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-24 02:04:59,868 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-24 02:04:59,869 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-24 02:04:59,870 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-24 02:04:59,874 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-24 02:04:59,877 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-24 02:04:59,878 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-24 02:04:59,886 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-24 02:04:59,892 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-24 02:04:59,893 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-24 02:04:59,893 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-24 02:04:59,895 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-02-24 02:04:59,908 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-24 02:04:59,908 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-24 02:04:59,909 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-24 02:04:59,909 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-24 02:04:59,910 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-24 02:04:59,910 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-24 02:04:59,910 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-24 02:04:59,910 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-24 02:04:59,910 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-24 02:04:59,910 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-24 02:04:59,911 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-24 02:04:59,911 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-24 02:04:59,911 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-24 02:04:59,911 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-24 02:04:59,911 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-24 02:04:59,911 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-24 02:04:59,911 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-24 02:04:59,912 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-24 02:04:59,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-24 02:04:59,912 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-24 02:04:59,912 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-24 02:04:59,912 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-24 02:04:59,912 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-02-24 02:04:59,912 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-24 02:05:00,112 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-24 02:05:00,125 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-24 02:05:00,127 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-24 02:05:00,128 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-24 02:05:00,128 INFO L275 PluginConnector]: CDTParser initialized [2022-02-24 02:05:00,129 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers/floppy.i.cil-3.c [2022-02-24 02:05:00,188 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a78121ab7/b9a1ee1e61744b4bb1e46ebd20d44ed7/FLAG7d96e8447 [2022-02-24 02:05:00,809 INFO L306 CDTParser]: Found 1 translation units. [2022-02-24 02:05:00,810 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/floppy.i.cil-3.c [2022-02-24 02:05:00,845 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a78121ab7/b9a1ee1e61744b4bb1e46ebd20d44ed7/FLAG7d96e8447 [2022-02-24 02:05:01,210 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a78121ab7/b9a1ee1e61744b4bb1e46ebd20d44ed7 [2022-02-24 02:05:01,212 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-24 02:05:01,213 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-24 02:05:01,215 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-24 02:05:01,215 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-24 02:05:01,218 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-24 02:05:01,219 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 02:05:01" (1/1) ... [2022-02-24 02:05:01,220 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c63fb40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:05:01, skipping insertion in model container [2022-02-24 02:05:01,220 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 02:05:01" (1/1) ... [2022-02-24 02:05:01,225 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-24 02:05:01,298 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-24 02:05:01,711 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] [2022-02-24 02:05:02,034 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-24 02:05:02,098 INFO L203 MainTranslator]: Completed pre-run [2022-02-24 02:05:02,147 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] [2022-02-24 02:05:02,308 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-24 02:05:02,378 INFO L208 MainTranslator]: Completed translation [2022-02-24 02:05:02,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:05:02 WrapperNode [2022-02-24 02:05:02,379 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-24 02:05:02,381 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-24 02:05:02,381 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-24 02:05:02,382 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-24 02:05:02,390 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:05:02" (1/1) ... [2022-02-24 02:05:02,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:05:02" (1/1) ... [2022-02-24 02:05:02,450 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:05:02" (1/1) ... [2022-02-24 02:05:02,451 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:05:02" (1/1) ... [2022-02-24 02:05:02,592 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:05:02" (1/1) ... [2022-02-24 02:05:02,625 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:05:02" (1/1) ... [2022-02-24 02:05:02,647 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:05:02" (1/1) ... [2022-02-24 02:05:02,671 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-24 02:05:02,673 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-24 02:05:02,673 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-24 02:05:02,673 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-24 02:05:02,674 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:05:02" (1/1) ... [2022-02-24 02:05:02,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-24 02:05:02,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-24 02:05:02,725 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-24 02:05:02,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-24 02:05:02,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-24 02:05:02,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-24 02:05:02,774 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-24 02:05:02,774 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_guard [2022-02-24 02:05:02,774 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedExchange [2022-02-24 02:05:02,775 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-02-24 02:05:02,775 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-02-24 02:05:02,775 INFO L138 BoogieDeclarations]: Found implementation of procedure DriverEntry [2022-02-24 02:05:02,775 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyUnload [2022-02-24 02:05:02,775 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyAddDevice [2022-02-24 02:05:02,775 INFO L138 BoogieDeclarations]: Found implementation of procedure FlConfigCallBack [2022-02-24 02:05:02,775 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAcpiConfigureFloppy [2022-02-24 02:05:02,775 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2022-02-24 02:05:02,775 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2022-02-24 02:05:02,776 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyDeviceControl [2022-02-24 02:05:02,776 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnp [2022-02-24 02:05:02,776 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyStartDevice [2022-02-24 02:05:02,776 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2022-02-24 02:05:02,776 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPower [2022-02-24 02:05:02,776 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyReadWrite [2022-02-24 02:05:02,776 INFO L138 BoogieDeclarations]: Found implementation of procedure FlInterpretError [2022-02-24 02:05:02,776 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFinishOperation [2022-02-24 02:05:02,776 INFO L138 BoogieDeclarations]: Found implementation of procedure FlStartDrive [2022-02-24 02:05:02,776 INFO L138 BoogieDeclarations]: Found implementation of procedure FlDatarateSpecifyConfigure [2022-02-24 02:05:02,776 INFO L138 BoogieDeclarations]: Found implementation of procedure FlRecalibrateDrive [2022-02-24 02:05:02,776 INFO L138 BoogieDeclarations]: Found implementation of procedure FlDetermineMediaType [2022-02-24 02:05:02,776 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAllocateIoBuffer [2022-02-24 02:05:02,776 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFreeIoBuffer [2022-02-24 02:05:02,776 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyThread [2022-02-24 02:05:02,776 INFO L138 BoogieDeclarations]: Found implementation of procedure FlConsolidateMediaTypeWithBootSector [2022-02-24 02:05:02,777 INFO L138 BoogieDeclarations]: Found implementation of procedure FlCheckBootSector [2022-02-24 02:05:02,777 INFO L138 BoogieDeclarations]: Found implementation of procedure FlReadWriteTrack [2022-02-24 02:05:02,777 INFO L138 BoogieDeclarations]: Found implementation of procedure FlReadWrite [2022-02-24 02:05:02,777 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFormat [2022-02-24 02:05:02,777 INFO L138 BoogieDeclarations]: Found implementation of procedure FlCheckFormatParameters [2022-02-24 02:05:02,777 INFO L138 BoogieDeclarations]: Found implementation of procedure FlIssueCommand [2022-02-24 02:05:02,777 INFO L138 BoogieDeclarations]: Found implementation of procedure FlInitializeControllerHardware [2022-02-24 02:05:02,777 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2022-02-24 02:05:02,777 INFO L138 BoogieDeclarations]: Found implementation of procedure FlHdbit [2022-02-24 02:05:02,777 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyQueueRequest [2022-02-24 02:05:02,777 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCancelQueuedRequest [2022-02-24 02:05:02,777 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2022-02-24 02:05:02,777 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-02-24 02:05:02,777 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-24 02:05:02,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAcquireFastMutex [2022-02-24 02:05:02,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ExReleaseFastMutex [2022-02-24 02:05:02,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2022-02-24 02:05:02,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ExFreePool [2022-02-24 02:05:02,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertHeadList [2022-02-24 02:05:02,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertTailList [2022-02-24 02:05:02,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedRemoveHeadList [2022-02-24 02:05:02,778 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAllocateMdl [2022-02-24 02:05:02,778 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAttachDeviceToDeviceStack [2022-02-24 02:05:02,778 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildAsynchronousFsdRequest [2022-02-24 02:05:02,778 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2022-02-24 02:05:02,778 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateDevice [2022-02-24 02:05:02,778 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateSymbolicLink [2022-02-24 02:05:02,778 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteDevice [2022-02-24 02:05:02,778 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2022-02-24 02:05:02,778 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDetachDevice [2022-02-24 02:05:02,778 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeIrp [2022-02-24 02:05:02,778 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeMdl [2022-02-24 02:05:02,778 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2022-02-24 02:05:02,778 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2022-02-24 02:05:02,779 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2022-02-24 02:05:02,779 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReleaseCancelSpinLock [2022-02-24 02:05:02,779 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-02-24 02:05:02,779 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetHardErrorOrVerifyDevice [2022-02-24 02:05:02,779 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-02-24 02:05:02,779 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-02-24 02:05:02,779 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-02-24 02:05:02,779 INFO L138 BoogieDeclarations]: Found implementation of procedure KeAcquireSpinLockRaiseToDpc [2022-02-24 02:05:02,779 INFO L138 BoogieDeclarations]: Found implementation of procedure KeDelayExecutionThread [2022-02-24 02:05:02,779 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeEvent [2022-02-24 02:05:02,779 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSemaphore [2022-02-24 02:05:02,779 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSpinLock [2022-02-24 02:05:02,779 INFO L138 BoogieDeclarations]: Found implementation of procedure KeReleaseSemaphore [2022-02-24 02:05:02,779 INFO L138 BoogieDeclarations]: Found implementation of procedure KfReleaseSpinLock [2022-02-24 02:05:02,779 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-02-24 02:05:02,780 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-02-24 02:05:02,780 INFO L138 BoogieDeclarations]: Found implementation of procedure MmAllocateContiguousMemory [2022-02-24 02:05:02,780 INFO L138 BoogieDeclarations]: Found implementation of procedure MmFreeContiguousMemory [2022-02-24 02:05:02,780 INFO L138 BoogieDeclarations]: Found implementation of procedure MmMapLockedPagesSpecifyCache [2022-02-24 02:05:02,780 INFO L138 BoogieDeclarations]: Found implementation of procedure MmPageEntireDriver [2022-02-24 02:05:02,781 INFO L138 BoogieDeclarations]: Found implementation of procedure MmResetDriverPaging [2022-02-24 02:05:02,781 INFO L138 BoogieDeclarations]: Found implementation of procedure MmUnlockPages [2022-02-24 02:05:02,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2022-02-24 02:05:02,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ObfDereferenceObject [2022-02-24 02:05:02,782 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-02-24 02:05:02,782 INFO L138 BoogieDeclarations]: Found implementation of procedure PoStartNextPowerIrp [2022-02-24 02:05:02,782 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2022-02-24 02:05:02,782 INFO L138 BoogieDeclarations]: Found implementation of procedure PsTerminateSystemThread [2022-02-24 02:05:02,782 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlAnsiStringToUnicodeString [2022-02-24 02:05:02,782 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCompareMemory [2022-02-24 02:05:02,782 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCopyUnicodeString [2022-02-24 02:05:02,782 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlDeleteRegistryValue [2022-02-24 02:05:02,782 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlFreeUnicodeString [2022-02-24 02:05:02,782 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitString [2022-02-24 02:05:02,782 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitUnicodeString [2022-02-24 02:05:02,782 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlQueryRegistryValues [2022-02-24 02:05:02,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-02-24 02:05:02,782 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-02-24 02:05:02,782 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-02-24 02:05:02,783 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-02-24 02:05:02,783 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-24 02:05:02,783 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-24 02:05:02,783 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-24 02:05:02,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-24 02:05:02,783 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-02-24 02:05:02,783 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-02-24 02:05:02,783 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-24 02:05:02,783 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-02-24 02:05:02,784 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_guard [2022-02-24 02:05:02,784 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2022-02-24 02:05:02,784 INFO L130 BoogieDeclarations]: Found specification of procedure swprintf [2022-02-24 02:05:02,784 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2022-02-24 02:05:02,784 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2022-02-24 02:05:02,785 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2022-02-24 02:05:02,785 INFO L130 BoogieDeclarations]: Found specification of procedure RtlQueryRegistryValues [2022-02-24 02:05:02,785 INFO L130 BoogieDeclarations]: Found specification of procedure RtlDeleteRegistryValue [2022-02-24 02:05:02,785 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitString [2022-02-24 02:05:02,785 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitUnicodeString [2022-02-24 02:05:02,785 INFO L130 BoogieDeclarations]: Found specification of procedure RtlAnsiStringToUnicodeString [2022-02-24 02:05:02,785 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCopyUnicodeString [2022-02-24 02:05:02,785 INFO L130 BoogieDeclarations]: Found specification of procedure RtlFreeUnicodeString [2022-02-24 02:05:02,785 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCompareMemory [2022-02-24 02:05:02,785 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedExchange [2022-02-24 02:05:02,785 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-24 02:05:02,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-24 02:05:02,786 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeEvent [2022-02-24 02:05:02,786 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-02-24 02:05:02,786 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSemaphore [2022-02-24 02:05:02,786 INFO L130 BoogieDeclarations]: Found specification of procedure KeReleaseSemaphore [2022-02-24 02:05:02,786 INFO L130 BoogieDeclarations]: Found specification of procedure KeDelayExecutionThread [2022-02-24 02:05:02,786 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-02-24 02:05:02,786 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSpinLock [2022-02-24 02:05:02,786 INFO L130 BoogieDeclarations]: Found specification of procedure KfReleaseSpinLock [2022-02-24 02:05:02,786 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2022-02-24 02:05:02,787 INFO L130 BoogieDeclarations]: Found specification of procedure ExFreePool [2022-02-24 02:05:02,788 INFO L130 BoogieDeclarations]: Found specification of procedure ExAcquireFastMutex [2022-02-24 02:05:02,788 INFO L130 BoogieDeclarations]: Found specification of procedure ExReleaseFastMutex [2022-02-24 02:05:02,789 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertHeadList [2022-02-24 02:05:02,790 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertTailList [2022-02-24 02:05:02,792 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedRemoveHeadList [2022-02-24 02:05:02,792 INFO L130 BoogieDeclarations]: Found specification of procedure MmUnlockPages [2022-02-24 02:05:02,792 INFO L130 BoogieDeclarations]: Found specification of procedure MmMapLockedPagesSpecifyCache [2022-02-24 02:05:02,793 INFO L130 BoogieDeclarations]: Found specification of procedure MmAllocateContiguousMemory [2022-02-24 02:05:02,793 INFO L130 BoogieDeclarations]: Found specification of procedure MmFreeContiguousMemory [2022-02-24 02:05:02,793 INFO L130 BoogieDeclarations]: Found specification of procedure MmResetDriverPaging [2022-02-24 02:05:02,793 INFO L130 BoogieDeclarations]: Found specification of procedure MmPageEntireDriver [2022-02-24 02:05:02,793 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2022-02-24 02:05:02,793 INFO L130 BoogieDeclarations]: Found specification of procedure PsTerminateSystemThread [2022-02-24 02:05:02,793 INFO L130 BoogieDeclarations]: Found specification of procedure IoAllocateMdl [2022-02-24 02:05:02,793 INFO L130 BoogieDeclarations]: Found specification of procedure IoAttachDeviceToDeviceStack [2022-02-24 02:05:02,793 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildAsynchronousFsdRequest [2022-02-24 02:05:02,793 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2022-02-24 02:05:02,793 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-02-24 02:05:02,793 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-02-24 02:05:02,793 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateDevice [2022-02-24 02:05:02,793 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateSymbolicLink [2022-02-24 02:05:02,793 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteDevice [2022-02-24 02:05:02,793 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2022-02-24 02:05:02,793 INFO L130 BoogieDeclarations]: Found specification of procedure IoDetachDevice [2022-02-24 02:05:02,793 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeIrp [2022-02-24 02:05:02,793 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeMdl [2022-02-24 02:05:02,793 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2022-02-24 02:05:02,794 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2022-02-24 02:05:02,794 INFO L130 BoogieDeclarations]: Found specification of procedure IoReleaseCancelSpinLock [2022-02-24 02:05:02,794 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetHardErrorOrVerifyDevice [2022-02-24 02:05:02,794 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2022-02-24 02:05:02,794 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-02-24 02:05:02,794 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-02-24 02:05:02,794 INFO L130 BoogieDeclarations]: Found specification of procedure PoStartNextPowerIrp [2022-02-24 02:05:02,794 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2022-02-24 02:05:02,794 INFO L130 BoogieDeclarations]: Found specification of procedure ObfDereferenceObject [2022-02-24 02:05:02,794 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-02-24 02:05:02,794 INFO L130 BoogieDeclarations]: Found specification of procedure DriverEntry [2022-02-24 02:05:02,794 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyUnload [2022-02-24 02:05:02,794 INFO L130 BoogieDeclarations]: Found specification of procedure FlConfigCallBack [2022-02-24 02:05:02,794 INFO L130 BoogieDeclarations]: Found specification of procedure FlInitializeControllerHardware [2022-02-24 02:05:02,794 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2022-02-24 02:05:02,794 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyDeviceControl [2022-02-24 02:05:02,794 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyReadWrite [2022-02-24 02:05:02,794 INFO L130 BoogieDeclarations]: Found specification of procedure FlRecalibrateDrive [2022-02-24 02:05:02,794 INFO L130 BoogieDeclarations]: Found specification of procedure FlDatarateSpecifyConfigure [2022-02-24 02:05:02,794 INFO L130 BoogieDeclarations]: Found specification of procedure FlStartDrive [2022-02-24 02:05:02,794 INFO L130 BoogieDeclarations]: Found specification of procedure FlFinishOperation [2022-02-24 02:05:02,794 INFO L130 BoogieDeclarations]: Found specification of procedure FlDetermineMediaType [2022-02-24 02:05:02,795 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyThread [2022-02-24 02:05:02,795 INFO L130 BoogieDeclarations]: Found specification of procedure FlReadWrite [2022-02-24 02:05:02,795 INFO L130 BoogieDeclarations]: Found specification of procedure FlFormat [2022-02-24 02:05:02,795 INFO L130 BoogieDeclarations]: Found specification of procedure FlIssueCommand [2022-02-24 02:05:02,795 INFO L130 BoogieDeclarations]: Found specification of procedure FlCheckFormatParameters [2022-02-24 02:05:02,795 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2022-02-24 02:05:02,795 INFO L130 BoogieDeclarations]: Found specification of procedure FlInterpretError [2022-02-24 02:05:02,795 INFO L130 BoogieDeclarations]: Found specification of procedure FlAllocateIoBuffer [2022-02-24 02:05:02,795 INFO L130 BoogieDeclarations]: Found specification of procedure FlFreeIoBuffer [2022-02-24 02:05:02,795 INFO L130 BoogieDeclarations]: Found specification of procedure FlConsolidateMediaTypeWithBootSector [2022-02-24 02:05:02,795 INFO L130 BoogieDeclarations]: Found specification of procedure FlCheckBootSector [2022-02-24 02:05:02,795 INFO L130 BoogieDeclarations]: Found specification of procedure FlReadWriteTrack [2022-02-24 02:05:02,795 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2022-02-24 02:05:02,795 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyAddDevice [2022-02-24 02:05:02,795 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnp [2022-02-24 02:05:02,795 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPower [2022-02-24 02:05:02,795 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2022-02-24 02:05:02,795 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyQueueRequest [2022-02-24 02:05:02,795 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyStartDevice [2022-02-24 02:05:02,796 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2022-02-24 02:05:02,796 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCancelQueuedRequest [2022-02-24 02:05:02,796 INFO L130 BoogieDeclarations]: Found specification of procedure FlAcpiConfigureFloppy [2022-02-24 02:05:02,796 INFO L130 BoogieDeclarations]: Found specification of procedure FlHdbit [2022-02-24 02:05:02,796 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-02-24 02:05:02,797 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-02-24 02:05:02,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-02-24 02:05:02,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-02-24 02:05:02,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-24 02:05:02,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-24 02:05:02,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-02-24 02:05:02,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-02-24 02:05:02,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-02-24 02:05:02,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-02-24 02:05:02,797 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-02-24 02:05:02,797 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-24 02:05:02,797 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-02-24 02:05:02,797 INFO L130 BoogieDeclarations]: Found specification of procedure KeAcquireSpinLockRaiseToDpc [2022-02-24 02:05:02,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-24 02:05:02,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-24 02:05:02,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-24 02:05:02,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-02-24 02:05:02,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-02-24 02:05:02,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-02-24 02:05:02,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-02-24 02:05:03,306 INFO L234 CfgBuilder]: Building ICFG [2022-02-24 02:05:03,309 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-24 02:05:03,341 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:05:03,415 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:05:03,415 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:05:03,416 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:05:03,420 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:05:03,420 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:05:05,011 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:05:05,016 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:05:05,016 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:05:05,016 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:05:05,022 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:05:05,022 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:05:05,025 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:05:05,030 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:05:05,030 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:05:05,060 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:05:05,065 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:05:05,065 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:05:05,065 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:05:05,073 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:05:05,073 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:05:05,073 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:05:05,079 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:05:05,080 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:05:05,118 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:05:05,163 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2022-02-24 02:05:05,164 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2022-02-24 02:05:05,239 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:05:05,248 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:05:05,248 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:05:05,248 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:05:05,252 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:05:05,252 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:05:05,253 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:05:05,268 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:05:05,268 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:05:05,279 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:05:05,287 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:05:05,287 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:05:05,287 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:05:05,291 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:05:05,291 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:05:11,807 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:05:11,820 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-02-24 02:05:11,820 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-02-24 02:05:11,866 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:05:12,147 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !false; [2022-02-24 02:05:12,147 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##37: assume false; [2022-02-24 02:05:12,405 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:05:12,408 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:05:12,408 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:05:12,464 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:05:12,486 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2022-02-24 02:05:12,487 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2022-02-24 02:05:12,489 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:05:12,600 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-02-24 02:05:12,601 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-02-24 02:05:12,601 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:05:12,645 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2022-02-24 02:05:12,645 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2022-02-24 02:05:23,597 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:05:23,601 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:05:23,601 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:05:23,749 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:05:23,752 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:05:23,752 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:05:23,766 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:05:24,974 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume !false; [2022-02-24 02:05:24,974 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume false; [2022-02-24 02:05:25,006 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:05:25,185 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##48: assume !false; [2022-02-24 02:05:25,185 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##47: assume false; [2022-02-24 02:05:25,186 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:05:25,198 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-02-24 02:05:25,198 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-02-24 02:05:25,198 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:05:25,237 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2022-02-24 02:05:25,237 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2022-02-24 02:05:25,240 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:05:25,246 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-02-24 02:05:25,246 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-02-24 02:05:25,285 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:05:25,288 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:05:25,288 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:05:25,300 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:05:25,307 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:05:25,307 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:05:25,308 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:05:25,419 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##46: assume !false; [2022-02-24 02:05:25,419 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##45: assume false; [2022-02-24 02:05:25,468 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:05:27,828 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume !false; [2022-02-24 02:05:27,828 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##13: assume false; [2022-02-24 02:05:27,850 INFO L275 CfgBuilder]: Performing block encoding [2022-02-24 02:05:27,867 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-24 02:05:27,867 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2022-02-24 02:05:27,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 02:05:27 BoogieIcfgContainer [2022-02-24 02:05:27,870 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-24 02:05:27,871 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-24 02:05:27,872 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-24 02:05:27,875 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-24 02:05:27,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 02:05:01" (1/3) ... [2022-02-24 02:05:27,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e9cc2c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 02:05:27, skipping insertion in model container [2022-02-24 02:05:27,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:05:02" (2/3) ... [2022-02-24 02:05:27,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e9cc2c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 02:05:27, skipping insertion in model container [2022-02-24 02:05:27,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 02:05:27" (3/3) ... [2022-02-24 02:05:27,877 INFO L111 eAbstractionObserver]: Analyzing ICFG floppy.i.cil-3.c [2022-02-24 02:05:27,880 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-24 02:05:27,881 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-24 02:05:27,920 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-24 02:05:27,924 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=JORDAN [2022-02-24 02:05:27,924 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-24 02:05:27,953 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) [2022-02-24 02:05:27,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-02-24 02:05:27,959 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:05:27,959 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:05:27,960 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:05:27,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:05:27,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1208806804, now seen corresponding path program 1 times [2022-02-24 02:05:27,968 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:05:27,968 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [177226987] [2022-02-24 02:05:27,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:05:27,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:05:28,075 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:05:28,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:28,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:05:28,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:28,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:05:28,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:28,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:05:28,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:28,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 02:05:28,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:28,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:05:28,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:28,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:05:28,849 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:05:28,849 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [177226987] [2022-02-24 02:05:28,850 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [177226987] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:05:28,850 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:05:28,850 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-24 02:05:28,851 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357803313] [2022-02-24 02:05:28,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:05:28,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-24 02:05:28,854 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:05:28,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-24 02:05:28,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-02-24 02:05:28,879 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) [2022-02-24 02:05:35,822 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:05:37,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:05:37,040 INFO L93 Difference]: Finished difference Result 1453 states and 2231 transitions. [2022-02-24 02:05:37,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-24 02:05:37,043 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 [2022-02-24 02:05:37,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:05:37,071 INFO L225 Difference]: With dead ends: 1453 [2022-02-24 02:05:37,071 INFO L226 Difference]: Without dead ends: 858 [2022-02-24 02:05:37,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-02-24 02:05:37,084 INFO L933 BasicCegarLoop]: 747 mSDtfsCounter, 1345 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 3102 mSolverCounterSat, 617 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1379 SdHoareTripleChecker+Valid, 1283 SdHoareTripleChecker+Invalid, 3720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 617 IncrementalHoareTripleChecker+Valid, 3102 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-02-24 02:05:37,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1379 Valid, 1283 Invalid, 3720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [617 Valid, 3102 Invalid, 1 Unknown, 0 Unchecked, 7.3s Time] [2022-02-24 02:05:37,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2022-02-24 02:05:37,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 670. [2022-02-24 02:05:37,209 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) [2022-02-24 02:05:37,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 931 transitions. [2022-02-24 02:05:37,217 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 931 transitions. Word has length 37 [2022-02-24 02:05:37,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:05:37,218 INFO L470 AbstractCegarLoop]: Abstraction has 670 states and 931 transitions. [2022-02-24 02:05:37,219 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) [2022-02-24 02:05:37,219 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 931 transitions. [2022-02-24 02:05:37,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-24 02:05:37,221 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:05:37,221 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] [2022-02-24 02:05:37,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-24 02:05:37,221 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:05:37,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:05:37,222 INFO L85 PathProgramCache]: Analyzing trace with hash 171558063, now seen corresponding path program 1 times [2022-02-24 02:05:37,222 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:05:37,222 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [281200873] [2022-02-24 02:05:37,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:05:37,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:05:37,241 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:05:37,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:37,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:05:37,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:37,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:05:37,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:37,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:05:37,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:37,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 02:05:37,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:37,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:05:37,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:37,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-24 02:05:37,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:37,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:05:37,826 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:05:37,827 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [281200873] [2022-02-24 02:05:37,827 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [281200873] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:05:37,827 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:05:37,827 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-24 02:05:37,828 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847764173] [2022-02-24 02:05:37,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:05:37,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-24 02:05:37,829 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:05:37,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-24 02:05:37,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-02-24 02:05:37,829 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) [2022-02-24 02:05:43,993 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:05:48,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:05:48,072 INFO L93 Difference]: Finished difference Result 1951 states and 2856 transitions. [2022-02-24 02:05:48,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-24 02:05:48,073 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 [2022-02-24 02:05:48,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:05:48,100 INFO L225 Difference]: With dead ends: 1951 [2022-02-24 02:05:48,100 INFO L226 Difference]: Without dead ends: 1471 [2022-02-24 02:05:48,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-02-24 02:05:48,104 INFO L933 BasicCegarLoop]: 940 mSDtfsCounter, 3479 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 3506 mSolverCounterSat, 1401 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3520 SdHoareTripleChecker+Valid, 1665 SdHoareTripleChecker+Invalid, 4908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1401 IncrementalHoareTripleChecker+Valid, 3506 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:05:48,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3520 Valid, 1665 Invalid, 4908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1401 Valid, 3506 Invalid, 1 Unknown, 0 Unchecked, 9.1s Time] [2022-02-24 02:05:48,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1471 states. [2022-02-24 02:05:48,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1471 to 1230. [2022-02-24 02:05:48,334 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) [2022-02-24 02:05:48,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 1762 transitions. [2022-02-24 02:05:48,362 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 1762 transitions. Word has length 42 [2022-02-24 02:05:48,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:05:48,362 INFO L470 AbstractCegarLoop]: Abstraction has 1230 states and 1762 transitions. [2022-02-24 02:05:48,377 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) [2022-02-24 02:05:48,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 1762 transitions. [2022-02-24 02:05:48,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-02-24 02:05:48,385 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:05:48,385 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] [2022-02-24 02:05:48,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-24 02:05:48,386 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:05:48,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:05:48,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1220689, now seen corresponding path program 1 times [2022-02-24 02:05:48,386 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:05:48,386 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1702319910] [2022-02-24 02:05:48,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:05:48,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:05:48,404 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:05:48,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:48,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:05:48,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:48,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:05:48,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:48,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:05:48,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:48,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 02:05:48,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:48,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:05:48,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:48,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-24 02:05:48,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:48,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-02-24 02:05:48,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:49,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:05:49,005 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:05:49,005 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1702319910] [2022-02-24 02:05:49,005 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1702319910] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:05:49,005 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:05:49,005 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-24 02:05:49,005 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471267344] [2022-02-24 02:05:49,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:05:49,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-24 02:05:49,006 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:05:49,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-24 02:05:49,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-02-24 02:05:49,007 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) [2022-02-24 02:05:53,136 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:05:57,292 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:06:00,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:06:00,680 INFO L93 Difference]: Finished difference Result 2279 states and 3379 transitions. [2022-02-24 02:06:00,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-24 02:06:00,680 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 [2022-02-24 02:06:00,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:06:00,690 INFO L225 Difference]: With dead ends: 2279 [2022-02-24 02:06:00,691 INFO L226 Difference]: Without dead ends: 2260 [2022-02-24 02:06:00,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-02-24 02:06:00,694 INFO L933 BasicCegarLoop]: 722 mSDtfsCounter, 3868 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 2855 mSolverCounterSat, 1489 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3928 SdHoareTripleChecker+Valid, 1301 SdHoareTripleChecker+Invalid, 4346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1489 IncrementalHoareTripleChecker+Valid, 2855 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2022-02-24 02:06:00,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3928 Valid, 1301 Invalid, 4346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1489 Valid, 2855 Invalid, 2 Unknown, 0 Unchecked, 10.6s Time] [2022-02-24 02:06:00,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2260 states. [2022-02-24 02:06:00,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2260 to 1905. [2022-02-24 02:06:00,981 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) [2022-02-24 02:06:00,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1905 states to 1905 states and 2769 transitions. [2022-02-24 02:06:00,989 INFO L78 Accepts]: Start accepts. Automaton has 1905 states and 2769 transitions. Word has length 54 [2022-02-24 02:06:00,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:06:00,990 INFO L470 AbstractCegarLoop]: Abstraction has 1905 states and 2769 transitions. [2022-02-24 02:06:00,990 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) [2022-02-24 02:06:00,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1905 states and 2769 transitions. [2022-02-24 02:06:00,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-02-24 02:06:00,991 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:06:00,991 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] [2022-02-24 02:06:00,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-24 02:06:00,991 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:06:00,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:06:00,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1955103331, now seen corresponding path program 1 times [2022-02-24 02:06:00,992 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:06:00,992 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [864865039] [2022-02-24 02:06:00,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:06:00,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:06:01,001 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:06:01,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:01,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:06:01,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:01,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:06:01,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:01,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:06:01,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:01,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 02:06:01,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:01,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:06:01,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:01,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-24 02:06:01,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:01,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:06:01,482 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:06:01,482 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [864865039] [2022-02-24 02:06:01,482 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [864865039] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:06:01,482 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:06:01,482 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-24 02:06:01,482 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628772458] [2022-02-24 02:06:01,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:06:01,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-24 02:06:01,482 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:06:01,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-24 02:06:01,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-02-24 02:06:01,483 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) [2022-02-24 02:06:08,142 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:06:10,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:06:10,134 INFO L93 Difference]: Finished difference Result 2254 states and 3363 transitions. [2022-02-24 02:06:10,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-24 02:06:10,134 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 [2022-02-24 02:06:10,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:06:10,166 INFO L225 Difference]: With dead ends: 2254 [2022-02-24 02:06:10,167 INFO L226 Difference]: Without dead ends: 2250 [2022-02-24 02:06:10,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-02-24 02:06:10,189 INFO L933 BasicCegarLoop]: 726 mSDtfsCounter, 1720 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 3121 mSolverCounterSat, 754 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s 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, 7.7s IncrementalHoareTripleChecker+Time [2022-02-24 02:06:10,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1753 Valid, 1278 Invalid, 3876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [754 Valid, 3121 Invalid, 1 Unknown, 0 Unchecked, 7.7s Time] [2022-02-24 02:06:10,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2250 states. [2022-02-24 02:06:10,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2250 to 1942. [2022-02-24 02:06:10,421 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) [2022-02-24 02:06:10,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1942 states to 1942 states and 2820 transitions. [2022-02-24 02:06:10,427 INFO L78 Accepts]: Start accepts. Automaton has 1942 states and 2820 transitions. Word has length 55 [2022-02-24 02:06:10,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:06:10,427 INFO L470 AbstractCegarLoop]: Abstraction has 1942 states and 2820 transitions. [2022-02-24 02:06:10,428 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) [2022-02-24 02:06:10,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1942 states and 2820 transitions. [2022-02-24 02:06:10,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-02-24 02:06:10,429 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:06:10,429 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] [2022-02-24 02:06:10,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-24 02:06:10,429 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:06:10,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:06:10,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1599289490, now seen corresponding path program 1 times [2022-02-24 02:06:10,430 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:06:10,430 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [275231999] [2022-02-24 02:06:10,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:06:10,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:06:10,442 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:06:10,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:10,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:06:10,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:10,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:06:10,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:10,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:06:10,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:10,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 02:06:10,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:10,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:06:10,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:10,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-24 02:06:10,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:10,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:06:10,930 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:06:10,930 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [275231999] [2022-02-24 02:06:10,930 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [275231999] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:06:10,931 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:06:10,931 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-24 02:06:10,931 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248167545] [2022-02-24 02:06:10,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:06:10,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-24 02:06:10,931 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:06:10,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-24 02:06:10,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-02-24 02:06:10,932 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) [2022-02-24 02:06:15,655 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:06:17,766 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:06:21,792 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:06:25,082 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:06:28,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:06:28,682 INFO L93 Difference]: Finished difference Result 3881 states and 5849 transitions. [2022-02-24 02:06:28,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-24 02:06:28,682 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 [2022-02-24 02:06:28,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:06:28,696 INFO L225 Difference]: With dead ends: 3881 [2022-02-24 02:06:28,696 INFO L226 Difference]: Without dead ends: 3878 [2022-02-24 02:06:28,697 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 [2022-02-24 02:06:28,698 INFO L933 BasicCegarLoop]: 1152 mSDtfsCounter, 2146 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 4379 mSolverCounterSat, 913 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2192 SdHoareTripleChecker+Valid, 1872 SdHoareTripleChecker+Invalid, 5296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 913 IncrementalHoareTripleChecker+Valid, 4379 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time [2022-02-24 02:06:28,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2192 Valid, 1872 Invalid, 5296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [913 Valid, 4379 Invalid, 4 Unknown, 0 Unchecked, 16.2s Time] [2022-02-24 02:06:28,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3878 states. [2022-02-24 02:06:29,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3878 to 3105. [2022-02-24 02:06:29,152 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) [2022-02-24 02:06:29,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3105 states to 3105 states and 4524 transitions. [2022-02-24 02:06:29,162 INFO L78 Accepts]: Start accepts. Automaton has 3105 states and 4524 transitions. Word has length 55 [2022-02-24 02:06:29,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:06:29,162 INFO L470 AbstractCegarLoop]: Abstraction has 3105 states and 4524 transitions. [2022-02-24 02:06:29,162 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) [2022-02-24 02:06:29,162 INFO L276 IsEmpty]: Start isEmpty. Operand 3105 states and 4524 transitions. [2022-02-24 02:06:29,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-02-24 02:06:29,163 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:06:29,163 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] [2022-02-24 02:06:29,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-24 02:06:29,163 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:06:29,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:06:29,164 INFO L85 PathProgramCache]: Analyzing trace with hash 2095199445, now seen corresponding path program 1 times [2022-02-24 02:06:29,164 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:06:29,164 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [241440556] [2022-02-24 02:06:29,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:06:29,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:06:29,173 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:06:29,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:29,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:06:29,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:29,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:06:29,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:29,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:06:29,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:29,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 02:06:29,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:29,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:06:29,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:29,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-24 02:06:29,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:29,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:06:29,611 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:06:29,611 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [241440556] [2022-02-24 02:06:29,611 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [241440556] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:06:29,611 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:06:29,611 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-24 02:06:29,611 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903542045] [2022-02-24 02:06:29,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:06:29,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-24 02:06:29,612 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:06:29,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-24 02:06:29,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-02-24 02:06:29,613 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) [2022-02-24 02:06:35,340 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:06:37,437 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:06:41,578 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:06:49,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:06:49,183 INFO L93 Difference]: Finished difference Result 6653 states and 9861 transitions. [2022-02-24 02:06:49,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-24 02:06:49,183 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 [2022-02-24 02:06:49,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:06:49,231 INFO L225 Difference]: With dead ends: 6653 [2022-02-24 02:06:49,231 INFO L226 Difference]: Without dead ends: 3833 [2022-02-24 02:06:49,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=453, Invalid=1439, Unknown=0, NotChecked=0, Total=1892 [2022-02-24 02:06:49,253 INFO L933 BasicCegarLoop]: 981 mSDtfsCounter, 5008 mSDsluCounter, 1074 mSDsCounter, 0 mSdLazyCounter, 6681 mSolverCounterSat, 2201 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5054 SdHoareTripleChecker+Valid, 2055 SdHoareTripleChecker+Invalid, 8885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2201 IncrementalHoareTripleChecker+Valid, 6681 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.8s IncrementalHoareTripleChecker+Time [2022-02-24 02:06:49,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5054 Valid, 2055 Invalid, 8885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2201 Valid, 6681 Invalid, 3 Unknown, 0 Unchecked, 16.8s Time] [2022-02-24 02:06:49,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3833 states. [2022-02-24 02:06:49,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3833 to 3099. [2022-02-24 02:06:49,771 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) [2022-02-24 02:06:49,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3099 states to 3099 states and 4510 transitions. [2022-02-24 02:06:49,780 INFO L78 Accepts]: Start accepts. Automaton has 3099 states and 4510 transitions. Word has length 56 [2022-02-24 02:06:49,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:06:49,781 INFO L470 AbstractCegarLoop]: Abstraction has 3099 states and 4510 transitions. [2022-02-24 02:06:49,781 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) [2022-02-24 02:06:49,781 INFO L276 IsEmpty]: Start isEmpty. Operand 3099 states and 4510 transitions. [2022-02-24 02:06:49,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-02-24 02:06:49,782 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:06:49,782 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] [2022-02-24 02:06:49,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-24 02:06:49,782 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:06:49,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:06:49,782 INFO L85 PathProgramCache]: Analyzing trace with hash -363771634, now seen corresponding path program 1 times [2022-02-24 02:06:49,782 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:06:49,783 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1153446084] [2022-02-24 02:06:49,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:06:49,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:06:49,793 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:06:49,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:49,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:06:50,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:50,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:06:50,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:50,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:06:50,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:50,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 02:06:50,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:50,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:06:50,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:50,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-24 02:06:50,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:50,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-24 02:06:50,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:50,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:06:50,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:50,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:06:50,228 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:06:50,228 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1153446084] [2022-02-24 02:06:50,229 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1153446084] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:06:50,229 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:06:50,229 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-24 02:06:50,229 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470202263] [2022-02-24 02:06:50,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:06:50,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-24 02:06:50,229 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:06:50,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-24 02:06:50,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-02-24 02:06:50,230 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) [2022-02-24 02:06:55,791 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:06:57,888 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:07:02,517 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:07:08,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:07:08,198 INFO L93 Difference]: Finished difference Result 4462 states and 6736 transitions. [2022-02-24 02:07:08,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-24 02:07:08,199 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 [2022-02-24 02:07:08,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:07:08,213 INFO L225 Difference]: With dead ends: 4462 [2022-02-24 02:07:08,213 INFO L226 Difference]: Without dead ends: 4457 [2022-02-24 02:07:08,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=196, Invalid=506, Unknown=0, NotChecked=0, Total=702 [2022-02-24 02:07:08,216 INFO L933 BasicCegarLoop]: 1060 mSDtfsCounter, 2955 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 4420 mSolverCounterSat, 1427 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s 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, 16.2s IncrementalHoareTripleChecker+Time [2022-02-24 02:07:08,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2989 Valid, 2028 Invalid, 5850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1427 Valid, 4420 Invalid, 3 Unknown, 0 Unchecked, 16.2s Time] [2022-02-24 02:07:08,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4457 states. [2022-02-24 02:07:08,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4457 to 3755. [2022-02-24 02:07:08,796 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) [2022-02-24 02:07:08,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3755 states to 3755 states and 5493 transitions. [2022-02-24 02:07:08,806 INFO L78 Accepts]: Start accepts. Automaton has 3755 states and 5493 transitions. Word has length 57 [2022-02-24 02:07:08,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:07:08,807 INFO L470 AbstractCegarLoop]: Abstraction has 3755 states and 5493 transitions. [2022-02-24 02:07:08,807 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) [2022-02-24 02:07:08,807 INFO L276 IsEmpty]: Start isEmpty. Operand 3755 states and 5493 transitions. [2022-02-24 02:07:08,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-02-24 02:07:08,809 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:07:08,809 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] [2022-02-24 02:07:08,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-24 02:07:08,809 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:07:08,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:07:08,810 INFO L85 PathProgramCache]: Analyzing trace with hash 2058578860, now seen corresponding path program 1 times [2022-02-24 02:07:08,810 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:07:08,810 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1628971488] [2022-02-24 02:07:08,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:07:08,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:07:08,820 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:07:08,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:09,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:07:09,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:09,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:07:09,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:09,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:07:09,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:09,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 02:07:09,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:09,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:07:09,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:09,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-24 02:07:09,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:09,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-24 02:07:09,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:09,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:07:09,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:09,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:07:09,297 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:07:09,297 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1628971488] [2022-02-24 02:07:09,297 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1628971488] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:07:09,297 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:07:09,298 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-24 02:07:09,298 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328369765] [2022-02-24 02:07:09,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:07:09,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-24 02:07:09,298 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:07:09,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-24 02:07:09,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-02-24 02:07:09,299 INFO L87 Difference]: Start difference. First operand 3755 states and 5493 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 5 states have internal predecessors, (40), 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) [2022-02-24 02:07:16,960 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:07:22,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:07:22,458 INFO L93 Difference]: Finished difference Result 4521 states and 6811 transitions. [2022-02-24 02:07:22,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-24 02:07:22,458 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 5 states have internal predecessors, (40), 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 58 [2022-02-24 02:07:22,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:07:22,475 INFO L225 Difference]: With dead ends: 4521 [2022-02-24 02:07:22,475 INFO L226 Difference]: Without dead ends: 4515 [2022-02-24 02:07:22,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=504, Invalid=1658, Unknown=0, NotChecked=0, Total=2162 [2022-02-24 02:07:22,479 INFO L933 BasicCegarLoop]: 1036 mSDtfsCounter, 4613 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 4439 mSolverCounterSat, 2195 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4662 SdHoareTripleChecker+Valid, 1839 SdHoareTripleChecker+Invalid, 6635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2195 IncrementalHoareTripleChecker+Valid, 4439 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2022-02-24 02:07:22,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4662 Valid, 1839 Invalid, 6635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2195 Valid, 4439 Invalid, 1 Unknown, 0 Unchecked, 10.2s Time] [2022-02-24 02:07:22,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4515 states. [2022-02-24 02:07:23,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4515 to 3793. [2022-02-24 02:07:23,185 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) [2022-02-24 02:07:23,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3793 states to 3793 states and 5550 transitions. [2022-02-24 02:07:23,238 INFO L78 Accepts]: Start accepts. Automaton has 3793 states and 5550 transitions. Word has length 58 [2022-02-24 02:07:23,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:07:23,238 INFO L470 AbstractCegarLoop]: Abstraction has 3793 states and 5550 transitions. [2022-02-24 02:07:23,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 5 states have internal predecessors, (40), 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) [2022-02-24 02:07:23,239 INFO L276 IsEmpty]: Start isEmpty. Operand 3793 states and 5550 transitions. [2022-02-24 02:07:23,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-02-24 02:07:23,240 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:07:23,240 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] [2022-02-24 02:07:23,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-24 02:07:23,240 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:07:23,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:07:23,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1470236357, now seen corresponding path program 1 times [2022-02-24 02:07:23,241 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:07:23,241 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [575948953] [2022-02-24 02:07:23,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:07:23,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:07:23,250 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:07:23,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:23,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:07:23,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:23,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:07:23,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:23,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:07:23,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:23,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 02:07:23,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:23,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:07:23,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:23,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-24 02:07:23,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:23,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-24 02:07:23,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:23,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:07:23,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:23,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:07:23,751 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:07:23,751 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [575948953] [2022-02-24 02:07:23,751 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [575948953] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:07:23,751 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:07:23,751 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-24 02:07:23,751 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247123376] [2022-02-24 02:07:23,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:07:23,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-24 02:07:23,752 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:07:23,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-24 02:07:23,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-02-24 02:07:23,753 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) [2022-02-24 02:07:31,921 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:07:38,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:07:38,285 INFO L93 Difference]: Finished difference Result 4499 states and 6781 transitions. [2022-02-24 02:07:38,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-24 02:07:38,286 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 [2022-02-24 02:07:38,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:07:38,299 INFO L225 Difference]: With dead ends: 4499 [2022-02-24 02:07:38,299 INFO L226 Difference]: Without dead ends: 4493 [2022-02-24 02:07:38,301 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 [2022-02-24 02:07:38,301 INFO L933 BasicCegarLoop]: 1031 mSDtfsCounter, 3804 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 5553 mSolverCounterSat, 1814 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3854 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, 11.5s IncrementalHoareTripleChecker+Time [2022-02-24 02:07:38,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3854 Valid, 1956 Invalid, 7368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1814 Valid, 5553 Invalid, 1 Unknown, 0 Unchecked, 11.5s Time] [2022-02-24 02:07:38,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4493 states. [2022-02-24 02:07:38,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4493 to 3793. [2022-02-24 02:07:38,980 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) [2022-02-24 02:07:38,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3793 states to 3793 states and 5549 transitions. [2022-02-24 02:07:38,992 INFO L78 Accepts]: Start accepts. Automaton has 3793 states and 5549 transitions. Word has length 59 [2022-02-24 02:07:38,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:07:38,992 INFO L470 AbstractCegarLoop]: Abstraction has 3793 states and 5549 transitions. [2022-02-24 02:07:38,992 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) [2022-02-24 02:07:38,992 INFO L276 IsEmpty]: Start isEmpty. Operand 3793 states and 5549 transitions. [2022-02-24 02:07:38,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-02-24 02:07:38,995 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:07:38,995 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] [2022-02-24 02:07:38,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-24 02:07:38,995 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:07:38,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:07:38,996 INFO L85 PathProgramCache]: Analyzing trace with hash -449310488, now seen corresponding path program 1 times [2022-02-24 02:07:38,996 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:07:38,996 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1920560286] [2022-02-24 02:07:38,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:07:38,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:07:39,006 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:07:39,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:39,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:07:39,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:39,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:07:39,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:39,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:07:39,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:39,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 02:07:39,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:39,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:07:39,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:39,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-24 02:07:39,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:39,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-02-24 02:07:39,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:39,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:07:39,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:39,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:07:39,621 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:07:39,621 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1920560286] [2022-02-24 02:07:39,621 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1920560286] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:07:39,621 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:07:39,621 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-24 02:07:39,621 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636235042] [2022-02-24 02:07:39,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:07:39,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-24 02:07:39,622 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:07:39,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-24 02:07:39,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-02-24 02:07:39,623 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) [2022-02-24 02:07:47,968 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:07:50,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:07:50,683 INFO L93 Difference]: Finished difference Result 4510 states and 6799 transitions. [2022-02-24 02:07:50,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-24 02:07:50,684 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 [2022-02-24 02:07:50,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:07:50,732 INFO L225 Difference]: With dead ends: 4510 [2022-02-24 02:07:50,732 INFO L226 Difference]: Without dead ends: 4493 [2022-02-24 02:07:50,738 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 [2022-02-24 02:07:50,739 INFO L933 BasicCegarLoop]: 722 mSDtfsCounter, 2798 mSDsluCounter, 1030 mSDsCounter, 0 mSdLazyCounter, 4680 mSolverCounterSat, 1206 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2837 SdHoareTripleChecker+Valid, 1752 SdHoareTripleChecker+Invalid, 5887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1206 IncrementalHoareTripleChecker+Valid, 4680 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-02-24 02:07:50,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2837 Valid, 1752 Invalid, 5887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1206 Valid, 4680 Invalid, 1 Unknown, 0 Unchecked, 9.5s Time] [2022-02-24 02:07:50,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4493 states. [2022-02-24 02:07:51,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4493 to 3791. [2022-02-24 02:07:51,599 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) [2022-02-24 02:07:51,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3791 states to 3791 states and 5545 transitions. [2022-02-24 02:07:51,612 INFO L78 Accepts]: Start accepts. Automaton has 3791 states and 5545 transitions. Word has length 59 [2022-02-24 02:07:51,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:07:51,613 INFO L470 AbstractCegarLoop]: Abstraction has 3791 states and 5545 transitions. [2022-02-24 02:07:51,613 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) [2022-02-24 02:07:51,613 INFO L276 IsEmpty]: Start isEmpty. Operand 3791 states and 5545 transitions. [2022-02-24 02:07:51,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-02-24 02:07:51,614 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:07:51,615 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:07:51,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-02-24 02:07:51,615 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:07:51,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:07:51,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1749808949, now seen corresponding path program 1 times [2022-02-24 02:07:51,616 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:07:51,616 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1820415904] [2022-02-24 02:07:51,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:07:51,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:07:51,628 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:07:51,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:51,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:07:51,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:52,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:07:52,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:52,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:07:52,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:52,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 02:07:52,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:52,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:07:52,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:52,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-24 02:07:52,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:52,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-24 02:07:52,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:52,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:07:52,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:52,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:07:52,289 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:07:52,289 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1820415904] [2022-02-24 02:07:52,289 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1820415904] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:07:52,290 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:07:52,290 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-24 02:07:52,290 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444198175] [2022-02-24 02:07:52,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:07:52,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-24 02:07:52,290 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:07:52,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-24 02:07:52,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-02-24 02:07:52,291 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) [2022-02-24 02:08:00,463 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:08:03,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:08:03,525 INFO L93 Difference]: Finished difference Result 4508 states and 6795 transitions. [2022-02-24 02:08:03,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-24 02:08:03,526 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 [2022-02-24 02:08:03,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:08:03,537 INFO L225 Difference]: With dead ends: 4508 [2022-02-24 02:08:03,538 INFO L226 Difference]: Without dead ends: 4486 [2022-02-24 02:08:03,540 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 [2022-02-24 02:08:03,540 INFO L933 BasicCegarLoop]: 717 mSDtfsCounter, 2479 mSDsluCounter, 1165 mSDsCounter, 0 mSdLazyCounter, 4736 mSolverCounterSat, 1134 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s 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, 9.6s IncrementalHoareTripleChecker+Time [2022-02-24 02:08:03,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2518 Valid, 1882 Invalid, 5871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1134 Valid, 4736 Invalid, 1 Unknown, 0 Unchecked, 9.6s Time] [2022-02-24 02:08:03,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4486 states. [2022-02-24 02:08:04,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4486 to 3784. [2022-02-24 02:08:04,283 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) [2022-02-24 02:08:04,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3784 states to 3784 states and 5536 transitions. [2022-02-24 02:08:04,292 INFO L78 Accepts]: Start accepts. Automaton has 3784 states and 5536 transitions. Word has length 60 [2022-02-24 02:08:04,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:08:04,292 INFO L470 AbstractCegarLoop]: Abstraction has 3784 states and 5536 transitions. [2022-02-24 02:08:04,292 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) [2022-02-24 02:08:04,292 INFO L276 IsEmpty]: Start isEmpty. Operand 3784 states and 5536 transitions. [2022-02-24 02:08:04,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-24 02:08:04,293 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:08:04,293 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] [2022-02-24 02:08:04,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-02-24 02:08:04,294 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:08:04,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:08:04,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1740462473, now seen corresponding path program 1 times [2022-02-24 02:08:04,294 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:08:04,294 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1225733689] [2022-02-24 02:08:04,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:08:04,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:08:04,303 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:08:04,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:04,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:08:04,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:04,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:08:04,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:04,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:08:04,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:04,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 02:08:04,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:04,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:08:04,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:04,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-24 02:08:04,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:04,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-02-24 02:08:04,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:04,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:08:04,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:04,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:08:04,737 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:08:04,737 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1225733689] [2022-02-24 02:08:04,737 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1225733689] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:08:04,737 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:08:04,737 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-24 02:08:04,738 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483971017] [2022-02-24 02:08:04,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:08:04,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-24 02:08:04,738 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:08:04,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-24 02:08:04,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-02-24 02:08:04,738 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) [2022-02-24 02:08:10,402 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:08:16,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:08:16,879 INFO L93 Difference]: Finished difference Result 12302 states and 18979 transitions. [2022-02-24 02:08:16,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-24 02:08:16,879 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 [2022-02-24 02:08:16,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:08:16,913 INFO L225 Difference]: With dead ends: 12302 [2022-02-24 02:08:16,913 INFO L226 Difference]: Without dead ends: 8762 [2022-02-24 02:08:16,931 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 [2022-02-24 02:08:16,932 INFO L933 BasicCegarLoop]: 921 mSDtfsCounter, 3613 mSDsluCounter, 977 mSDsCounter, 0 mSdLazyCounter, 3708 mSolverCounterSat, 1615 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3672 SdHoareTripleChecker+Valid, 1898 SdHoareTripleChecker+Invalid, 5324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1615 IncrementalHoareTripleChecker+Valid, 3708 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-02-24 02:08:16,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3672 Valid, 1898 Invalid, 5324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1615 Valid, 3708 Invalid, 1 Unknown, 0 Unchecked, 9.0s Time] [2022-02-24 02:08:16,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8762 states. [2022-02-24 02:08:18,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8762 to 7553. [2022-02-24 02:08:18,525 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) [2022-02-24 02:08:18,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7553 states to 7553 states and 11439 transitions. [2022-02-24 02:08:18,552 INFO L78 Accepts]: Start accepts. Automaton has 7553 states and 11439 transitions. Word has length 69 [2022-02-24 02:08:18,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:08:18,553 INFO L470 AbstractCegarLoop]: Abstraction has 7553 states and 11439 transitions. [2022-02-24 02:08:18,553 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) [2022-02-24 02:08:18,553 INFO L276 IsEmpty]: Start isEmpty. Operand 7553 states and 11439 transitions. [2022-02-24 02:08:18,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-02-24 02:08:18,554 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:08:18,554 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:08:18,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-02-24 02:08:18,554 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:08:18,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:08:18,555 INFO L85 PathProgramCache]: Analyzing trace with hash -858477288, now seen corresponding path program 1 times [2022-02-24 02:08:18,555 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:08:18,555 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1641046796] [2022-02-24 02:08:18,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:08:18,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:08:18,564 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:08:18,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:18,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:08:18,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:18,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:08:18,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:18,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:08:18,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:18,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 02:08:18,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:18,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:08:18,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:18,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-24 02:08:18,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:18,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-02-24 02:08:18,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:19,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:08:19,001 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:08:19,001 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1641046796] [2022-02-24 02:08:19,001 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1641046796] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:08:19,001 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:08:19,001 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-24 02:08:19,001 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503179508] [2022-02-24 02:08:19,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:08:19,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-24 02:08:19,002 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:08:19,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-24 02:08:19,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-02-24 02:08:19,003 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) [2022-02-24 02:08:27,066 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:08:31,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:08:31,482 INFO L93 Difference]: Finished difference Result 15329 states and 23754 transitions. [2022-02-24 02:08:31,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-24 02:08:31,482 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 [2022-02-24 02:08:31,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:08:31,546 INFO L225 Difference]: With dead ends: 15329 [2022-02-24 02:08:31,547 INFO L226 Difference]: Without dead ends: 8851 [2022-02-24 02:08:31,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2022-02-24 02:08:31,585 INFO L933 BasicCegarLoop]: 709 mSDtfsCounter, 1463 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 3193 mSolverCounterSat, 656 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s 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, 9.2s IncrementalHoareTripleChecker+Time [2022-02-24 02:08:31,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1499 Valid, 1290 Invalid, 3850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [656 Valid, 3193 Invalid, 1 Unknown, 0 Unchecked, 9.2s Time] [2022-02-24 02:08:31,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8851 states. [2022-02-24 02:08:33,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8851 to 7693. [2022-02-24 02:08:33,292 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) [2022-02-24 02:08:33,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7693 states to 7693 states and 11567 transitions. [2022-02-24 02:08:33,317 INFO L78 Accepts]: Start accepts. Automaton has 7693 states and 11567 transitions. Word has length 61 [2022-02-24 02:08:33,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:08:33,317 INFO L470 AbstractCegarLoop]: Abstraction has 7693 states and 11567 transitions. [2022-02-24 02:08:33,317 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) [2022-02-24 02:08:33,317 INFO L276 IsEmpty]: Start isEmpty. Operand 7693 states and 11567 transitions. [2022-02-24 02:08:33,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-02-24 02:08:33,318 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:08:33,319 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] [2022-02-24 02:08:33,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-02-24 02:08:33,319 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:08:33,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:08:33,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1733980064, now seen corresponding path program 1 times [2022-02-24 02:08:33,319 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:08:33,319 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [460807784] [2022-02-24 02:08:33,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:08:33,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:08:33,329 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:08:33,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:33,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:08:33,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:33,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:08:33,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:33,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:08:33,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:33,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 02:08:33,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:33,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:08:33,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:33,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-24 02:08:33,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:33,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-02-24 02:08:33,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:33,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-24 02:08:33,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:33,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:08:33,787 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:08:33,787 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [460807784] [2022-02-24 02:08:33,787 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [460807784] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:08:33,788 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:08:33,788 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-24 02:08:33,788 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690172192] [2022-02-24 02:08:33,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:08:33,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-24 02:08:33,788 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:08:33,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-24 02:08:33,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-02-24 02:08:33,788 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) [2022-02-24 02:08:42,918 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:08:48,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:08:48,302 INFO L93 Difference]: Finished difference Result 16412 states and 24974 transitions. [2022-02-24 02:08:48,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-24 02:08:48,303 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 [2022-02-24 02:08:48,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:08:48,335 INFO L225 Difference]: With dead ends: 16412 [2022-02-24 02:08:48,335 INFO L226 Difference]: Without dead ends: 8747 [2022-02-24 02:08:48,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=122, Invalid=384, Unknown=0, NotChecked=0, Total=506 [2022-02-24 02:08:48,366 INFO L933 BasicCegarLoop]: 713 mSDtfsCounter, 1570 mSDsluCounter, 1221 mSDsCounter, 0 mSdLazyCounter, 5867 mSolverCounterSat, 686 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1607 SdHoareTripleChecker+Valid, 1934 SdHoareTripleChecker+Invalid, 6554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 686 IncrementalHoareTripleChecker+Valid, 5867 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2022-02-24 02:08:48,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1607 Valid, 1934 Invalid, 6554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [686 Valid, 5867 Invalid, 1 Unknown, 0 Unchecked, 11.3s Time] [2022-02-24 02:08:48,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8747 states. [2022-02-24 02:08:50,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8747 to 7693. [2022-02-24 02:08:50,069 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) [2022-02-24 02:08:50,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7693 states to 7693 states and 11566 transitions. [2022-02-24 02:08:50,096 INFO L78 Accepts]: Start accepts. Automaton has 7693 states and 11566 transitions. Word has length 64 [2022-02-24 02:08:50,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:08:50,097 INFO L470 AbstractCegarLoop]: Abstraction has 7693 states and 11566 transitions. [2022-02-24 02:08:50,097 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) [2022-02-24 02:08:50,097 INFO L276 IsEmpty]: Start isEmpty. Operand 7693 states and 11566 transitions. [2022-02-24 02:08:50,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-02-24 02:08:50,098 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:08:50,098 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] [2022-02-24 02:08:50,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-02-24 02:08:50,099 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:08:50,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:08:50,099 INFO L85 PathProgramCache]: Analyzing trace with hash 605121929, now seen corresponding path program 1 times [2022-02-24 02:08:50,099 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:08:50,099 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [633025381] [2022-02-24 02:08:50,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:08:50,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:08:50,109 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:08:50,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:50,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:08:50,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:50,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:08:50,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:50,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:08:50,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:50,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 02:08:50,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:50,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:08:50,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:50,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-24 02:08:50,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:50,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-24 02:08:50,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:50,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-24 02:08:50,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:50,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:08:50,733 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:08:50,733 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [633025381] [2022-02-24 02:08:50,733 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [633025381] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:08:50,734 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:08:50,734 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-24 02:08:50,734 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231781591] [2022-02-24 02:08:50,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:08:50,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-24 02:08:50,734 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:08:50,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-24 02:08:50,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-02-24 02:08:50,735 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) [2022-02-24 02:08:58,616 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:09:04,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:09:04,243 INFO L93 Difference]: Finished difference Result 8779 states and 13520 transitions. [2022-02-24 02:09:04,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-24 02:09:04,243 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 [2022-02-24 02:09:04,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:09:04,302 INFO L225 Difference]: With dead ends: 8779 [2022-02-24 02:09:04,303 INFO L226 Difference]: Without dead ends: 8763 [2022-02-24 02:09:04,306 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 [2022-02-24 02:09:04,306 INFO L933 BasicCegarLoop]: 720 mSDtfsCounter, 1563 mSDsluCounter, 1229 mSDsCounter, 0 mSdLazyCounter, 5942 mSolverCounterSat, 684 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1601 SdHoareTripleChecker+Valid, 1949 SdHoareTripleChecker+Invalid, 6627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 684 IncrementalHoareTripleChecker+Valid, 5942 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2022-02-24 02:09:04,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1601 Valid, 1949 Invalid, 6627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [684 Valid, 5942 Invalid, 1 Unknown, 0 Unchecked, 10.3s Time] [2022-02-24 02:09:04,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8763 states. [2022-02-24 02:09:06,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8763 to 7699. [2022-02-24 02:09:06,037 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) [2022-02-24 02:09:06,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7699 states to 7699 states and 11591 transitions. [2022-02-24 02:09:06,060 INFO L78 Accepts]: Start accepts. Automaton has 7699 states and 11591 transitions. Word has length 68 [2022-02-24 02:09:06,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:09:06,060 INFO L470 AbstractCegarLoop]: Abstraction has 7699 states and 11591 transitions. [2022-02-24 02:09:06,061 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) [2022-02-24 02:09:06,061 INFO L276 IsEmpty]: Start isEmpty. Operand 7699 states and 11591 transitions. [2022-02-24 02:09:06,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-24 02:09:06,062 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:09:06,062 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] [2022-02-24 02:09:06,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-02-24 02:09:06,062 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:09:06,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:09:06,063 INFO L85 PathProgramCache]: Analyzing trace with hash -175683046, now seen corresponding path program 1 times [2022-02-24 02:09:06,063 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:09:06,063 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1730055481] [2022-02-24 02:09:06,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:09:06,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:09:06,073 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:09:06,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:06,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:09:06,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:06,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:09:06,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:06,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:09:06,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:06,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 02:09:06,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:06,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:09:06,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:06,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-24 02:09:06,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:06,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-02-24 02:09:06,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:06,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-24 02:09:06,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:06,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:09:06,523 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:09:06,523 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1730055481] [2022-02-24 02:09:06,523 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1730055481] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:09:06,523 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:09:06,523 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-24 02:09:06,523 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196969193] [2022-02-24 02:09:06,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:09:06,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-24 02:09:06,524 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:09:06,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-24 02:09:06,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-02-24 02:09:06,524 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) [2022-02-24 02:09:14,634 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:09:19,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:09:19,937 INFO L93 Difference]: Finished difference Result 8771 states and 13494 transitions. [2022-02-24 02:09:19,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-24 02:09:19,938 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 [2022-02-24 02:09:19,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:09:19,989 INFO L225 Difference]: With dead ends: 8771 [2022-02-24 02:09:19,989 INFO L226 Difference]: Without dead ends: 8751 [2022-02-24 02:09:19,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2022-02-24 02:09:19,994 INFO L933 BasicCegarLoop]: 727 mSDtfsCounter, 1568 mSDsluCounter, 1234 mSDsCounter, 0 mSdLazyCounter, 5285 mSolverCounterSat, 687 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1606 SdHoareTripleChecker+Valid, 1961 SdHoareTripleChecker+Invalid, 5973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 687 IncrementalHoareTripleChecker+Valid, 5285 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2022-02-24 02:09:19,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1606 Valid, 1961 Invalid, 5973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [687 Valid, 5285 Invalid, 1 Unknown, 0 Unchecked, 10.2s Time] [2022-02-24 02:09:19,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8751 states. [2022-02-24 02:09:21,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8751 to 7697. [2022-02-24 02:09:21,808 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) [2022-02-24 02:09:21,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7697 states to 7697 states and 11587 transitions. [2022-02-24 02:09:21,839 INFO L78 Accepts]: Start accepts. Automaton has 7697 states and 11587 transitions. Word has length 69 [2022-02-24 02:09:21,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:09:21,839 INFO L470 AbstractCegarLoop]: Abstraction has 7697 states and 11587 transitions. [2022-02-24 02:09:21,839 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) [2022-02-24 02:09:21,840 INFO L276 IsEmpty]: Start isEmpty. Operand 7697 states and 11587 transitions. [2022-02-24 02:09:21,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-24 02:09:21,841 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:09:21,841 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] [2022-02-24 02:09:21,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-02-24 02:09:21,842 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:09:21,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:09:21,842 INFO L85 PathProgramCache]: Analyzing trace with hash -2112328753, now seen corresponding path program 1 times [2022-02-24 02:09:21,842 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:09:21,842 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2141695056] [2022-02-24 02:09:21,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:09:21,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:09:21,853 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:09:21,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:22,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:09:22,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:22,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:09:22,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:22,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:09:22,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:22,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 02:09:22,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:22,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:09:22,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:22,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-24 02:09:22,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:22,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-02-24 02:09:22,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:22,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-24 02:09:22,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:22,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:09:22,441 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:09:22,441 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2141695056] [2022-02-24 02:09:22,442 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2141695056] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:09:22,442 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:09:22,442 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-24 02:09:22,442 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171778393] [2022-02-24 02:09:22,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:09:22,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-24 02:09:22,442 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:09:22,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-24 02:09:22,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-02-24 02:09:22,443 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) [2022-02-24 02:09:28,064 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:09:30,241 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:09:32,415 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:09:38,601 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:09:44,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:09:44,235 INFO L93 Difference]: Finished difference Result 8766 states and 13487 transitions. [2022-02-24 02:09:44,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-24 02:09:44,235 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 [2022-02-24 02:09:44,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:09:44,256 INFO L225 Difference]: With dead ends: 8766 [2022-02-24 02:09:44,256 INFO L226 Difference]: Without dead ends: 8746 [2022-02-24 02:09:44,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2022-02-24 02:09:44,259 INFO L933 BasicCegarLoop]: 723 mSDtfsCounter, 2085 mSDsluCounter, 1283 mSDsCounter, 0 mSdLazyCounter, 5418 mSolverCounterSat, 898 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2123 SdHoareTripleChecker+Valid, 2006 SdHoareTripleChecker+Invalid, 6320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 898 IncrementalHoareTripleChecker+Valid, 5418 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.5s IncrementalHoareTripleChecker+Time [2022-02-24 02:09:44,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2123 Valid, 2006 Invalid, 6320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [898 Valid, 5418 Invalid, 4 Unknown, 0 Unchecked, 18.5s Time] [2022-02-24 02:09:44,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8746 states. [2022-02-24 02:09:46,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8746 to 7692. [2022-02-24 02:09:46,043 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) [2022-02-24 02:09:46,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7692 states to 7692 states and 11580 transitions. [2022-02-24 02:09:46,066 INFO L78 Accepts]: Start accepts. Automaton has 7692 states and 11580 transitions. Word has length 71 [2022-02-24 02:09:46,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:09:46,067 INFO L470 AbstractCegarLoop]: Abstraction has 7692 states and 11580 transitions. [2022-02-24 02:09:46,067 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) [2022-02-24 02:09:46,067 INFO L276 IsEmpty]: Start isEmpty. Operand 7692 states and 11580 transitions. [2022-02-24 02:09:46,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-02-24 02:09:46,069 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:09:46,069 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:09:46,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-02-24 02:09:46,069 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:09:46,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:09:46,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1256030660, now seen corresponding path program 1 times [2022-02-24 02:09:46,069 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:09:46,069 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1698475416] [2022-02-24 02:09:46,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:09:46,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:09:46,080 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:09:46,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:46,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:09:46,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:46,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:09:46,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:46,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:09:46,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:46,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 02:09:46,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:46,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:09:46,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:46,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-24 02:09:46,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:46,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-24 02:09:46,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:46,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-24 02:09:46,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:46,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:09:46,544 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:09:46,545 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1698475416] [2022-02-24 02:09:46,545 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1698475416] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:09:46,545 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:09:46,545 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-24 02:09:46,545 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795310006] [2022-02-24 02:09:46,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:09:46,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-24 02:09:46,545 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:09:46,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-24 02:09:46,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-02-24 02:09:46,546 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) [2022-02-24 02:09:52,682 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:09:58,146 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:10:09,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:10:09,899 INFO L93 Difference]: Finished difference Result 14674 states and 22627 transitions. [2022-02-24 02:10:09,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-24 02:10:09,900 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 [2022-02-24 02:10:09,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:10:09,949 INFO L225 Difference]: With dead ends: 14674 [2022-02-24 02:10:09,949 INFO L226 Difference]: Without dead ends: 10336 [2022-02-24 02:10:09,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=533, Invalid=2223, Unknown=0, NotChecked=0, Total=2756 [2022-02-24 02:10:09,963 INFO L933 BasicCegarLoop]: 1096 mSDtfsCounter, 4399 mSDsluCounter, 1204 mSDsCounter, 0 mSdLazyCounter, 8316 mSolverCounterSat, 2362 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4407 SdHoareTripleChecker+Valid, 2300 SdHoareTripleChecker+Invalid, 10680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2362 IncrementalHoareTripleChecker+Valid, 8316 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.0s IncrementalHoareTripleChecker+Time [2022-02-24 02:10:09,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4407 Valid, 2300 Invalid, 10680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2362 Valid, 8316 Invalid, 2 Unknown, 0 Unchecked, 18.0s Time] [2022-02-24 02:10:09,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10336 states. [2022-02-24 02:10:12,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10336 to 8302. [2022-02-24 02:10:12,092 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) [2022-02-24 02:10:12,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8302 states to 8302 states and 12485 transitions. [2022-02-24 02:10:12,116 INFO L78 Accepts]: Start accepts. Automaton has 8302 states and 12485 transitions. Word has length 72 [2022-02-24 02:10:12,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:10:12,117 INFO L470 AbstractCegarLoop]: Abstraction has 8302 states and 12485 transitions. [2022-02-24 02:10:12,117 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) [2022-02-24 02:10:12,117 INFO L276 IsEmpty]: Start isEmpty. Operand 8302 states and 12485 transitions. [2022-02-24 02:10:12,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-02-24 02:10:12,118 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:10:12,118 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:10:12,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-02-24 02:10:12,118 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:10:12,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:10:12,119 INFO L85 PathProgramCache]: Analyzing trace with hash -26354390, now seen corresponding path program 1 times [2022-02-24 02:10:12,119 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:10:12,119 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1611469297] [2022-02-24 02:10:12,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:10:12,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:10:12,129 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:10:12,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:12,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:10:12,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:12,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:10:12,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:12,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:10:12,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:12,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 02:10:12,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:12,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:10:12,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:12,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-24 02:10:12,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:12,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-24 02:10:12,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:12,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:10:12,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:12,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:10:12,689 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:10:12,689 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1611469297] [2022-02-24 02:10:12,689 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1611469297] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:10:12,689 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:10:12,689 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-24 02:10:12,689 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346347297] [2022-02-24 02:10:12,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:10:12,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-24 02:10:12,690 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:10:12,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-24 02:10:12,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-02-24 02:10:12,690 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) [2022-02-24 02:10:21,540 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:10:27,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:10:27,793 INFO L93 Difference]: Finished difference Result 16776 states and 25819 transitions. [2022-02-24 02:10:27,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-24 02:10:27,794 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 [2022-02-24 02:10:27,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:10:27,818 INFO L225 Difference]: With dead ends: 16776 [2022-02-24 02:10:27,818 INFO L226 Difference]: Without dead ends: 9666 [2022-02-24 02:10:27,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2022-02-24 02:10:27,836 INFO L933 BasicCegarLoop]: 698 mSDtfsCounter, 1422 mSDsluCounter, 981 mSDsCounter, 0 mSdLazyCounter, 5283 mSolverCounterSat, 622 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1456 SdHoareTripleChecker+Valid, 1679 SdHoareTripleChecker+Invalid, 5906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 622 IncrementalHoareTripleChecker+Valid, 5283 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:10:27,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1456 Valid, 1679 Invalid, 5906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [622 Valid, 5283 Invalid, 1 Unknown, 0 Unchecked, 11.1s Time] [2022-02-24 02:10:27,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9666 states. [2022-02-24 02:10:29,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9666 to 8460. [2022-02-24 02:10:29,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8460 states, 6719 states have (on average 1.4250632534603365) internal successors, (9575), 6926 states have internal predecessors, (9575), 1081 states have call successors, (1081), 521 states have call predecessors, (1081), 659 states have return successors, (2040), 1047 states have call predecessors, (2040), 1067 states have call successors, (2040) [2022-02-24 02:10:30,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8460 states to 8460 states and 12696 transitions. [2022-02-24 02:10:30,022 INFO L78 Accepts]: Start accepts. Automaton has 8460 states and 12696 transitions. Word has length 73 [2022-02-24 02:10:30,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:10:30,022 INFO L470 AbstractCegarLoop]: Abstraction has 8460 states and 12696 transitions. [2022-02-24 02:10:30,022 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) [2022-02-24 02:10:30,022 INFO L276 IsEmpty]: Start isEmpty. Operand 8460 states and 12696 transitions. [2022-02-24 02:10:30,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-02-24 02:10:30,024 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:10:30,024 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:10:30,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-02-24 02:10:30,024 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:10:30,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:10:30,024 INFO L85 PathProgramCache]: Analyzing trace with hash 879838427, now seen corresponding path program 1 times [2022-02-24 02:10:30,024 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:10:30,024 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [493130091] [2022-02-24 02:10:30,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:10:30,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:10:30,034 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:10:30,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:30,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:10:30,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:30,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:10:30,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:30,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:10:30,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:30,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 02:10:30,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:30,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:10:30,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:30,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-24 02:10:30,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:30,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-24 02:10:30,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:30,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:10:30,480 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:10:30,480 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [493130091] [2022-02-24 02:10:30,480 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [493130091] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:10:30,480 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:10:30,480 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-24 02:10:30,480 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681376096] [2022-02-24 02:10:30,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:10:30,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-24 02:10:30,481 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:10:30,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-24 02:10:30,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-02-24 02:10:30,481 INFO L87 Difference]: Start difference. First operand 8460 states and 12696 transitions. Second operand has 10 states, 10 states have (on average 5.7) internal successors, (57), 3 states have internal predecessors, (57), 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) [2022-02-24 02:10:38,270 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:10:43,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:10:43,823 INFO L93 Difference]: Finished difference Result 17060 states and 26210 transitions. [2022-02-24 02:10:43,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-24 02:10:43,824 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 3 states have internal predecessors, (57), 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 73 [2022-02-24 02:10:43,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:10:43,877 INFO L225 Difference]: With dead ends: 17060 [2022-02-24 02:10:43,878 INFO L226 Difference]: Without dead ends: 9792 [2022-02-24 02:10:43,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2022-02-24 02:10:43,897 INFO L933 BasicCegarLoop]: 695 mSDtfsCounter, 1461 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 3197 mSolverCounterSat, 645 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1497 SdHoareTripleChecker+Valid, 1271 SdHoareTripleChecker+Invalid, 3843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 645 IncrementalHoareTripleChecker+Valid, 3197 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-02-24 02:10:43,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1497 Valid, 1271 Invalid, 3843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [645 Valid, 3197 Invalid, 1 Unknown, 0 Unchecked, 8.8s Time] [2022-02-24 02:10:43,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9792 states. [2022-02-24 02:10:46,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9792 to 8520. [2022-02-24 02:10:46,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8520 states, 6779 states have (on average 1.4213010768549934) internal successors, (9635), 6986 states have internal predecessors, (9635), 1081 states have call successors, (1081), 521 states have call predecessors, (1081), 659 states have return successors, (2040), 1047 states have call predecessors, (2040), 1067 states have call successors, (2040) [2022-02-24 02:10:46,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8520 states to 8520 states and 12756 transitions. [2022-02-24 02:10:46,201 INFO L78 Accepts]: Start accepts. Automaton has 8520 states and 12756 transitions. Word has length 73 [2022-02-24 02:10:46,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:10:46,201 INFO L470 AbstractCegarLoop]: Abstraction has 8520 states and 12756 transitions. [2022-02-24 02:10:46,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 3 states have internal predecessors, (57), 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) [2022-02-24 02:10:46,201 INFO L276 IsEmpty]: Start isEmpty. Operand 8520 states and 12756 transitions. [2022-02-24 02:10:46,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-24 02:10:46,203 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:10:46,203 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:10:46,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-02-24 02:10:46,203 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:10:46,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:10:46,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1359799553, now seen corresponding path program 1 times [2022-02-24 02:10:46,203 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:10:46,203 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1538520579] [2022-02-24 02:10:46,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:10:46,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:10:46,213 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:10:46,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:46,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:10:46,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:46,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:10:46,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:46,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:10:46,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:46,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 02:10:46,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:46,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:10:46,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:46,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-24 02:10:46,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:46,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-24 02:10:46,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:46,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-24 02:10:46,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:46,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:10:46,670 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:10:46,670 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1538520579] [2022-02-24 02:10:46,670 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1538520579] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:10:46,670 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:10:46,670 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-24 02:10:46,671 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213611718] [2022-02-24 02:10:46,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:10:46,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-24 02:10:46,671 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:10:46,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-24 02:10:46,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-02-24 02:10:46,671 INFO L87 Difference]: Start difference. First operand 8520 states and 12756 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) [2022-02-24 02:10:56,543 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:11:03,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:11:03,220 INFO L93 Difference]: Finished difference Result 18004 states and 27633 transitions. [2022-02-24 02:11:03,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-24 02:11:03,221 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 [2022-02-24 02:11:03,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:11:03,247 INFO L225 Difference]: With dead ends: 18004 [2022-02-24 02:11:03,247 INFO L226 Difference]: Without dead ends: 9738 [2022-02-24 02:11:03,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=222, Invalid=590, Unknown=0, NotChecked=0, Total=812 [2022-02-24 02:11:03,270 INFO L933 BasicCegarLoop]: 660 mSDtfsCounter, 2317 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 4195 mSolverCounterSat, 933 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2368 SdHoareTripleChecker+Valid, 1484 SdHoareTripleChecker+Invalid, 5129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 933 IncrementalHoareTripleChecker+Valid, 4195 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2022-02-24 02:11:03,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2368 Valid, 1484 Invalid, 5129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [933 Valid, 4195 Invalid, 1 Unknown, 0 Unchecked, 11.8s Time] [2022-02-24 02:11:03,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9738 states. [2022-02-24 02:11:05,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9738 to 8539. [2022-02-24 02:11:05,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8539 states, 6798 states have (on average 1.4215945866431303) internal successors, (9664), 7005 states have internal predecessors, (9664), 1081 states have call successors, (1081), 521 states have call predecessors, (1081), 659 states have return successors, (2040), 1047 states have call predecessors, (2040), 1067 states have call successors, (2040) [2022-02-24 02:11:05,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8539 states to 8539 states and 12785 transitions. [2022-02-24 02:11:05,673 INFO L78 Accepts]: Start accepts. Automaton has 8539 states and 12785 transitions. Word has length 74 [2022-02-24 02:11:05,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:11:05,673 INFO L470 AbstractCegarLoop]: Abstraction has 8539 states and 12785 transitions. [2022-02-24 02:11:05,674 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) [2022-02-24 02:11:05,674 INFO L276 IsEmpty]: Start isEmpty. Operand 8539 states and 12785 transitions. [2022-02-24 02:11:05,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-24 02:11:05,675 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:11:05,675 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:11:05,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-02-24 02:11:05,675 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:11:05,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:11:05,676 INFO L85 PathProgramCache]: Analyzing trace with hash 941023037, now seen corresponding path program 1 times [2022-02-24 02:11:05,676 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:11:05,677 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [123582766] [2022-02-24 02:11:05,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:11:05,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:11:05,689 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:11:05,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:05,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:11:05,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:05,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:11:05,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:05,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:11:05,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:06,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 02:11:06,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:06,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:11:06,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:06,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-24 02:11:06,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:06,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-24 02:11:06,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:06,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-24 02:11:06,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:06,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:11:06,235 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:11:06,235 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [123582766] [2022-02-24 02:11:06,235 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [123582766] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:11:06,235 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:11:06,235 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-24 02:11:06,235 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905094484] [2022-02-24 02:11:06,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:11:06,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-24 02:11:06,236 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:11:06,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-24 02:11:06,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-02-24 02:11:06,236 INFO L87 Difference]: Start difference. First operand 8539 states and 12785 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) [2022-02-24 02:11:15,983 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:11:22,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:11:22,832 INFO L93 Difference]: Finished difference Result 14039 states and 21273 transitions. [2022-02-24 02:11:22,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-24 02:11:22,834 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 [2022-02-24 02:11:22,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:11:22,865 INFO L225 Difference]: With dead ends: 14039 [2022-02-24 02:11:22,865 INFO L226 Difference]: Without dead ends: 9512 [2022-02-24 02:11:22,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=374, Invalid=1432, Unknown=0, NotChecked=0, Total=1806 [2022-02-24 02:11:22,885 INFO L933 BasicCegarLoop]: 671 mSDtfsCounter, 3254 mSDsluCounter, 1054 mSDsCounter, 0 mSdLazyCounter, 4909 mSolverCounterSat, 1358 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3285 SdHoareTripleChecker+Valid, 1725 SdHoareTripleChecker+Invalid, 6268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1358 IncrementalHoareTripleChecker+Valid, 4909 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-02-24 02:11:22,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3285 Valid, 1725 Invalid, 6268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1358 Valid, 4909 Invalid, 1 Unknown, 0 Unchecked, 11.2s Time] [2022-02-24 02:11:22,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9512 states. [2022-02-24 02:11:25,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9512 to 7741. [2022-02-24 02:11:25,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7741 states, 6166 states have (on average 1.4192345118391176) internal successors, (8751), 6361 states have internal predecessors, (8751), 978 states have call successors, (978), 475 states have call predecessors, (978), 596 states have return successors, (1667), 939 states have call predecessors, (1667), 964 states have call successors, (1667) [2022-02-24 02:11:25,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7741 states to 7741 states and 11396 transitions. [2022-02-24 02:11:25,259 INFO L78 Accepts]: Start accepts. Automaton has 7741 states and 11396 transitions. Word has length 74 [2022-02-24 02:11:25,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:11:25,259 INFO L470 AbstractCegarLoop]: Abstraction has 7741 states and 11396 transitions. [2022-02-24 02:11:25,260 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) [2022-02-24 02:11:25,260 INFO L276 IsEmpty]: Start isEmpty. Operand 7741 states and 11396 transitions. [2022-02-24 02:11:25,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-24 02:11:25,261 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:11:25,261 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:11:25,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-02-24 02:11:25,261 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:11:25,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:11:25,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1087715839, now seen corresponding path program 1 times [2022-02-24 02:11:25,262 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:11:25,262 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [473740408] [2022-02-24 02:11:25,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:11:25,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:11:25,274 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:11:25,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:25,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:11:25,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:25,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:11:25,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:25,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:11:25,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:25,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 02:11:25,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:25,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:11:25,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:25,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-24 02:11:25,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:25,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-24 02:11:25,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:25,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-24 02:11:25,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:25,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:11:25,671 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:11:25,671 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [473740408] [2022-02-24 02:11:25,671 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [473740408] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:11:25,671 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:11:25,671 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-24 02:11:25,671 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978074451] [2022-02-24 02:11:25,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:11:25,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-24 02:11:25,673 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:11:25,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-24 02:11:25,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-02-24 02:11:25,674 INFO L87 Difference]: Start difference. First operand 7741 states and 11396 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) [2022-02-24 02:11:29,954 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:11:32,114 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:11:36,311 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:11:46,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:11:46,611 INFO L93 Difference]: Finished difference Result 11936 states and 18074 transitions. [2022-02-24 02:11:46,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-24 02:11:46,612 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 [2022-02-24 02:11:46,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:11:46,646 INFO L225 Difference]: With dead ends: 11936 [2022-02-24 02:11:46,646 INFO L226 Difference]: Without dead ends: 11923 [2022-02-24 02:11:46,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=231, Invalid=639, Unknown=0, NotChecked=0, Total=870 [2022-02-24 02:11:46,652 INFO L933 BasicCegarLoop]: 1150 mSDtfsCounter, 2675 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 4245 mSolverCounterSat, 1252 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2722 SdHoareTripleChecker+Valid, 1944 SdHoareTripleChecker+Invalid, 5500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1252 IncrementalHoareTripleChecker+Valid, 4245 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:11:46,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2722 Valid, 1944 Invalid, 5500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1252 Valid, 4245 Invalid, 3 Unknown, 0 Unchecked, 15.1s Time] [2022-02-24 02:11:46,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11923 states. [2022-02-24 02:11:49,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11923 to 8372. [2022-02-24 02:11:49,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8372 states, 6678 states have (on average 1.4225816112608565) internal successors, (9500), 6874 states have internal predecessors, (9500), 1047 states have call successors, (1047), 516 states have call predecessors, (1047), 646 states have return successors, (1781), 1017 states have call predecessors, (1781), 1033 states have call successors, (1781) [2022-02-24 02:11:49,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8372 states to 8372 states and 12328 transitions. [2022-02-24 02:11:49,562 INFO L78 Accepts]: Start accepts. Automaton has 8372 states and 12328 transitions. Word has length 74 [2022-02-24 02:11:49,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:11:49,562 INFO L470 AbstractCegarLoop]: Abstraction has 8372 states and 12328 transitions. [2022-02-24 02:11:49,562 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) [2022-02-24 02:11:49,563 INFO L276 IsEmpty]: Start isEmpty. Operand 8372 states and 12328 transitions. [2022-02-24 02:11:49,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-24 02:11:49,564 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:11:49,564 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:11:49,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-02-24 02:11:49,565 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:11:49,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:11:49,565 INFO L85 PathProgramCache]: Analyzing trace with hash -189949733, now seen corresponding path program 1 times [2022-02-24 02:11:49,565 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:11:49,565 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544466857] [2022-02-24 02:11:49,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:11:49,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:11:49,576 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:11:49,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:49,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:11:49,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:49,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:11:49,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:49,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:11:49,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:50,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 02:11:50,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:50,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:11:50,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:50,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-24 02:11:50,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:50,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-24 02:11:50,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:50,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-24 02:11:50,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:50,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:11:50,188 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:11:50,188 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1544466857] [2022-02-24 02:11:50,188 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1544466857] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:11:50,188 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:11:50,188 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-24 02:11:50,188 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096671139] [2022-02-24 02:11:50,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:11:50,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-24 02:11:50,189 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:11:50,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-24 02:11:50,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-02-24 02:11:50,189 INFO L87 Difference]: Start difference. First operand 8372 states and 12328 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) [2022-02-24 02:11:56,747 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:11:58,876 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:12:06,994 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:12:21,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:12:21,443 INFO L93 Difference]: Finished difference Result 10549 states and 15908 transitions. [2022-02-24 02:12:21,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-24 02:12:21,443 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 [2022-02-24 02:12:21,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:12:21,467 INFO L225 Difference]: With dead ends: 10549 [2022-02-24 02:12:21,468 INFO L226 Difference]: Without dead ends: 10545 [2022-02-24 02:12:21,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 677 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=557, Invalid=1893, Unknown=0, NotChecked=0, Total=2450 [2022-02-24 02:12:21,477 INFO L933 BasicCegarLoop]: 1097 mSDtfsCounter, 3584 mSDsluCounter, 1130 mSDsCounter, 0 mSdLazyCounter, 7467 mSolverCounterSat, 1707 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3625 SdHoareTripleChecker+Valid, 2227 SdHoareTripleChecker+Invalid, 9177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1707 IncrementalHoareTripleChecker+Valid, 7467 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.3s IncrementalHoareTripleChecker+Time [2022-02-24 02:12:21,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3625 Valid, 2227 Invalid, 9177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1707 Valid, 7467 Invalid, 3 Unknown, 0 Unchecked, 23.3s Time] [2022-02-24 02:12:21,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10545 states. [2022-02-24 02:12:24,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10545 to 8374. [2022-02-24 02:12:24,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8374 states, 6680 states have (on average 1.4224550898203592) internal successors, (9502), 6876 states have internal predecessors, (9502), 1047 states have call successors, (1047), 516 states have call predecessors, (1047), 646 states have return successors, (1781), 1017 states have call predecessors, (1781), 1033 states have call successors, (1781) [2022-02-24 02:12:24,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8374 states to 8374 states and 12330 transitions. [2022-02-24 02:12:24,378 INFO L78 Accepts]: Start accepts. Automaton has 8374 states and 12330 transitions. Word has length 75 [2022-02-24 02:12:24,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:12:24,379 INFO L470 AbstractCegarLoop]: Abstraction has 8374 states and 12330 transitions. [2022-02-24 02:12:24,379 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) [2022-02-24 02:12:24,379 INFO L276 IsEmpty]: Start isEmpty. Operand 8374 states and 12330 transitions. [2022-02-24 02:12:24,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-24 02:12:24,380 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:12:24,380 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:12:24,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-02-24 02:12:24,380 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:12:24,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:12:24,380 INFO L85 PathProgramCache]: Analyzing trace with hash -189672903, now seen corresponding path program 1 times [2022-02-24 02:12:24,381 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:12:24,381 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1529075989] [2022-02-24 02:12:24,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:12:24,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:12:24,391 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:12:24,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:24,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:12:24,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:24,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:12:24,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:24,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:12:24,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:24,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 02:12:24,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:24,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:12:24,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:24,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-24 02:12:24,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:24,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-24 02:12:24,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:24,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-24 02:12:24,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:24,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:12:24,996 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:12:24,996 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1529075989] [2022-02-24 02:12:24,996 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1529075989] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:12:24,996 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:12:24,996 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-24 02:12:24,996 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550830721] [2022-02-24 02:12:24,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:12:24,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-24 02:12:24,997 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:12:24,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-24 02:12:24,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-02-24 02:12:24,997 INFO L87 Difference]: Start difference. First operand 8374 states and 12330 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) [2022-02-24 02:12:35,627 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:12:44,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:12:44,069 INFO L93 Difference]: Finished difference Result 9494 states and 14341 transitions. [2022-02-24 02:12:44,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-24 02:12:44,069 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 [2022-02-24 02:12:44,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:12:44,093 INFO L225 Difference]: With dead ends: 9494 [2022-02-24 02:12:44,093 INFO L226 Difference]: Without dead ends: 9480 [2022-02-24 02:12:44,097 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 [2022-02-24 02:12:44,098 INFO L933 BasicCegarLoop]: 707 mSDtfsCounter, 2031 mSDsluCounter, 1493 mSDsCounter, 0 mSdLazyCounter, 7103 mSolverCounterSat, 884 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2070 SdHoareTripleChecker+Valid, 2200 SdHoareTripleChecker+Invalid, 7988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 884 IncrementalHoareTripleChecker+Valid, 7103 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.8s IncrementalHoareTripleChecker+Time [2022-02-24 02:12:44,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2070 Valid, 2200 Invalid, 7988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [884 Valid, 7103 Invalid, 1 Unknown, 0 Unchecked, 13.8s Time] [2022-02-24 02:12:44,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9480 states. [2022-02-24 02:12:47,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9480 to 8376. [2022-02-24 02:12:47,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8376 states, 6681 states have (on average 1.4223918575063612) internal successors, (9503), 6878 states have internal predecessors, (9503), 1047 states have call successors, (1047), 516 states have call predecessors, (1047), 647 states have return successors, (1797), 1017 states have call predecessors, (1797), 1033 states have call successors, (1797) [2022-02-24 02:12:47,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8376 states to 8376 states and 12347 transitions. [2022-02-24 02:12:47,082 INFO L78 Accepts]: Start accepts. Automaton has 8376 states and 12347 transitions. Word has length 75 [2022-02-24 02:12:47,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:12:47,082 INFO L470 AbstractCegarLoop]: Abstraction has 8376 states and 12347 transitions. [2022-02-24 02:12:47,082 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) [2022-02-24 02:12:47,083 INFO L276 IsEmpty]: Start isEmpty. Operand 8376 states and 12347 transitions. [2022-02-24 02:12:47,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-24 02:12:47,084 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:12:47,084 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, 1, 1] [2022-02-24 02:12:47,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-02-24 02:12:47,084 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:12:47,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:12:47,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1279361975, now seen corresponding path program 1 times [2022-02-24 02:12:47,084 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:12:47,084 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1865957269] [2022-02-24 02:12:47,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:12:47,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:12:47,095 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:12:47,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:47,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:12:47,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:47,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:12:47,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:47,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:12:47,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:47,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 02:12:47,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:47,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:12:47,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:47,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-24 02:12:47,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:47,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-02-24 02:12:47,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:47,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-24 02:12:47,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:47,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:12:47,673 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:12:47,673 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1865957269] [2022-02-24 02:12:47,673 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1865957269] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:12:47,673 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:12:47,674 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-24 02:12:47,674 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734153359] [2022-02-24 02:12:47,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:12:47,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-24 02:12:47,674 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:12:47,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-24 02:12:47,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-02-24 02:12:47,674 INFO L87 Difference]: Start difference. First operand 8376 states and 12347 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) [2022-02-24 02:12:59,091 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:13:06,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:13:06,923 INFO L93 Difference]: Finished difference Result 9487 states and 14285 transitions. [2022-02-24 02:13:06,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-24 02:13:06,924 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 [2022-02-24 02:13:06,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:13:06,948 INFO L225 Difference]: With dead ends: 9487 [2022-02-24 02:13:06,949 INFO L226 Difference]: Without dead ends: 9434 [2022-02-24 02:13:06,953 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 [2022-02-24 02:13:06,957 INFO L933 BasicCegarLoop]: 698 mSDtfsCounter, 2245 mSDsluCounter, 1536 mSDsCounter, 0 mSdLazyCounter, 6511 mSolverCounterSat, 1028 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2284 SdHoareTripleChecker+Valid, 2234 SdHoareTripleChecker+Invalid, 7540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1028 IncrementalHoareTripleChecker+Valid, 6511 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2022-02-24 02:13:06,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2284 Valid, 2234 Invalid, 7540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1028 Valid, 6511 Invalid, 1 Unknown, 0 Unchecked, 13.7s Time] [2022-02-24 02:13:06,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9434 states. [2022-02-24 02:13:09,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9434 to 8339. [2022-02-24 02:13:09,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8339 states, 6649 states have (on average 1.4227703414047226) internal successors, (9460), 6846 states have internal predecessors, (9460), 1044 states have call successors, (1044), 514 states have call predecessors, (1044), 645 states have return successors, (1793), 1014 states have call predecessors, (1793), 1030 states have call successors, (1793) [2022-02-24 02:13:09,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8339 states to 8339 states and 12297 transitions. [2022-02-24 02:13:09,948 INFO L78 Accepts]: Start accepts. Automaton has 8339 states and 12297 transitions. Word has length 75 [2022-02-24 02:13:09,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:13:09,948 INFO L470 AbstractCegarLoop]: Abstraction has 8339 states and 12297 transitions. [2022-02-24 02:13:09,948 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) [2022-02-24 02:13:09,948 INFO L276 IsEmpty]: Start isEmpty. Operand 8339 states and 12297 transitions. [2022-02-24 02:13:09,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-02-24 02:13:09,949 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:13:09,949 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:13:09,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-02-24 02:13:09,950 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:13:09,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:13:09,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1573546191, now seen corresponding path program 1 times [2022-02-24 02:13:09,950 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:13:09,950 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1342470285] [2022-02-24 02:13:09,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:13:09,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:13:09,962 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:13:10,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:10,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:13:10,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:10,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:13:10,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:10,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:13:10,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:10,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 02:13:10,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:10,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:13:10,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:10,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-24 02:13:10,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:10,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-24 02:13:10,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:10,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 02:13:10,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:10,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 02:13:10,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:10,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:13:10,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:10,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:13:10,634 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:13:10,634 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1342470285] [2022-02-24 02:13:10,635 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1342470285] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:13:10,635 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:13:10,635 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-24 02:13:10,635 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373504390] [2022-02-24 02:13:10,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:13:10,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-24 02:13:10,635 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:13:10,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-24 02:13:10,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-02-24 02:13:10,636 INFO L87 Difference]: Start difference. First operand 8339 states and 12297 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) [2022-02-24 02:13:19,139 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:13:31,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:13:31,150 INFO L93 Difference]: Finished difference Result 13326 states and 19927 transitions. [2022-02-24 02:13:31,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-24 02:13:31,151 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 [2022-02-24 02:13:31,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:13:31,178 INFO L225 Difference]: With dead ends: 13326 [2022-02-24 02:13:31,178 INFO L226 Difference]: Without dead ends: 9304 [2022-02-24 02:13:31,189 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 [2022-02-24 02:13:31,191 INFO L933 BasicCegarLoop]: 1110 mSDtfsCounter, 1861 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 5216 mSolverCounterSat, 838 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1914 SdHoareTripleChecker+Valid, 1928 SdHoareTripleChecker+Invalid, 6055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 838 IncrementalHoareTripleChecker+Valid, 5216 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.5s IncrementalHoareTripleChecker+Time [2022-02-24 02:13:31,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1914 Valid, 1928 Invalid, 6055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [838 Valid, 5216 Invalid, 1 Unknown, 0 Unchecked, 14.5s Time] [2022-02-24 02:13:31,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9304 states. [2022-02-24 02:13:34,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9304 to 7692. [2022-02-24 02:13:34,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7692 states, 6124 states have (on average 1.4188438928804703) internal successors, (8689), 6316 states have internal predecessors, (8689), 971 states have call successors, (971), 473 states have call predecessors, (971), 596 states have return successors, (1570), 934 states have call predecessors, (1570), 949 states have call successors, (1570) [2022-02-24 02:13:34,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7692 states to 7692 states and 11230 transitions. [2022-02-24 02:13:34,146 INFO L78 Accepts]: Start accepts. Automaton has 7692 states and 11230 transitions. Word has length 78 [2022-02-24 02:13:34,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:13:34,147 INFO L470 AbstractCegarLoop]: Abstraction has 7692 states and 11230 transitions. [2022-02-24 02:13:34,147 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) [2022-02-24 02:13:34,147 INFO L276 IsEmpty]: Start isEmpty. Operand 7692 states and 11230 transitions. [2022-02-24 02:13:34,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-02-24 02:13:34,148 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:13:34,148 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:13:34,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-02-24 02:13:34,149 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:13:34,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:13:34,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1631640044, now seen corresponding path program 1 times [2022-02-24 02:13:34,150 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:13:34,150 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941115349] [2022-02-24 02:13:34,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:13:34,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:13:34,162 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:13:34,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:34,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:13:34,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:34,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:13:34,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:34,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:13:34,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:34,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 02:13:34,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:34,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:13:34,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:34,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-24 02:13:34,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:34,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-24 02:13:34,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:34,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:13:34,594 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:13:34,594 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1941115349] [2022-02-24 02:13:34,594 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1941115349] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:13:34,594 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:13:34,594 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-24 02:13:34,594 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597367751] [2022-02-24 02:13:34,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:13:34,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-24 02:13:34,595 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:13:34,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-24 02:13:34,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-02-24 02:13:34,595 INFO L87 Difference]: Start difference. First operand 7692 states and 11230 transitions. Second operand has 10 states, 10 states have (on average 6.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2022-02-24 02:13:41,818 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:13:48,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:13:48,793 INFO L93 Difference]: Finished difference Result 15426 states and 23011 transitions. [2022-02-24 02:13:48,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-24 02:13:48,794 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 3 states have internal predecessors, (60), 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 76 [2022-02-24 02:13:48,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:13:48,820 INFO L225 Difference]: With dead ends: 15426 [2022-02-24 02:13:48,820 INFO L226 Difference]: Without dead ends: 8902 [2022-02-24 02:13:48,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2022-02-24 02:13:48,840 INFO L933 BasicCegarLoop]: 644 mSDtfsCounter, 2189 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 2369 mSolverCounterSat, 945 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2225 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 3315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 945 IncrementalHoareTripleChecker+Valid, 2369 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-02-24 02:13:48,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2225 Valid, 1151 Invalid, 3315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [945 Valid, 2369 Invalid, 1 Unknown, 0 Unchecked, 8.6s Time] [2022-02-24 02:13:48,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8902 states. [2022-02-24 02:13:52,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8902 to 7716. [2022-02-24 02:13:52,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7716 states, 6148 states have (on average 1.4172088484059857) internal successors, (8713), 6340 states have internal predecessors, (8713), 971 states have call successors, (971), 473 states have call predecessors, (971), 596 states have return successors, (1570), 934 states have call predecessors, (1570), 949 states have call successors, (1570) [2022-02-24 02:13:52,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7716 states to 7716 states and 11254 transitions. [2022-02-24 02:13:52,036 INFO L78 Accepts]: Start accepts. Automaton has 7716 states and 11254 transitions. Word has length 76 [2022-02-24 02:13:52,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:13:52,036 INFO L470 AbstractCegarLoop]: Abstraction has 7716 states and 11254 transitions. [2022-02-24 02:13:52,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2022-02-24 02:13:52,037 INFO L276 IsEmpty]: Start isEmpty. Operand 7716 states and 11254 transitions. [2022-02-24 02:13:52,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-24 02:13:52,038 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:13:52,038 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:13:52,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-02-24 02:13:52,038 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:13:52,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:13:52,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1608608426, now seen corresponding path program 1 times [2022-02-24 02:13:52,039 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:13:52,039 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1332234427] [2022-02-24 02:13:52,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:13:52,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:13:52,050 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:13:52,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:52,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:13:52,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:52,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:13:52,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:52,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:13:52,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:52,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 02:13:52,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:52,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:13:52,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:52,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-24 02:13:52,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:52,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-24 02:13:52,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:52,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 02:13:52,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:52,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-24 02:13:52,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:52,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:13:52,620 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:13:52,620 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1332234427] [2022-02-24 02:13:52,620 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1332234427] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:13:52,620 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:13:52,621 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-24 02:13:52,621 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914114693] [2022-02-24 02:13:52,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:13:52,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-24 02:13:52,621 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:13:52,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-24 02:13:52,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-02-24 02:13:52,622 INFO L87 Difference]: Start difference. First operand 7716 states and 11254 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) [2022-02-24 02:13:57,587 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:13:59,724 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:14:01,864 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:14:04,336 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.47s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:14:10,247 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:14:17,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:14:17,714 INFO L93 Difference]: Finished difference Result 15276 states and 22677 transitions. [2022-02-24 02:14:17,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-24 02:14:17,715 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 [2022-02-24 02:14:17,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:14:17,739 INFO L225 Difference]: With dead ends: 15276 [2022-02-24 02:14:17,740 INFO L226 Difference]: Without dead ends: 8728 [2022-02-24 02:14:17,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2022-02-24 02:14:17,758 INFO L933 BasicCegarLoop]: 661 mSDtfsCounter, 2318 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 2220 mSolverCounterSat, 1033 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2353 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 3258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1033 IncrementalHoareTripleChecker+Valid, 2220 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.0s IncrementalHoareTripleChecker+Time [2022-02-24 02:14:17,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2353 Valid, 1173 Invalid, 3258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1033 Valid, 2220 Invalid, 5 Unknown, 0 Unchecked, 19.0s Time] [2022-02-24 02:14:17,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8728 states. [2022-02-24 02:14:20,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8728 to 7668. [2022-02-24 02:14:20,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7668 states, 6100 states have (on average 1.4165573770491804) internal successors, (8641), 6308 states have internal predecessors, (8641), 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) [2022-02-24 02:14:20,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7668 states to 7668 states and 11182 transitions. [2022-02-24 02:14:20,885 INFO L78 Accepts]: Start accepts. Automaton has 7668 states and 11182 transitions. Word has length 79 [2022-02-24 02:14:20,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:14:20,886 INFO L470 AbstractCegarLoop]: Abstraction has 7668 states and 11182 transitions. [2022-02-24 02:14:20,886 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) [2022-02-24 02:14:20,886 INFO L276 IsEmpty]: Start isEmpty. Operand 7668 states and 11182 transitions. [2022-02-24 02:14:20,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-02-24 02:14:20,887 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:14:20,887 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:14:20,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-02-24 02:14:20,887 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:14:20,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:14:20,888 INFO L85 PathProgramCache]: Analyzing trace with hash -697853230, now seen corresponding path program 1 times [2022-02-24 02:14:20,888 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:14:20,888 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [430335066] [2022-02-24 02:14:20,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:14:20,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:14:20,899 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:14:20,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:14:21,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:14:21,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:14:21,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:14:21,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:14:21,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:14:21,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:14:21,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 02:14:21,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:14:21,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:14:21,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:14:21,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-24 02:14:21,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:14:21,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-24 02:14:21,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:14:21,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 02:14:21,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:14:21,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:14:21,457 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:14:21,457 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [430335066] [2022-02-24 02:14:21,457 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [430335066] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:14:21,457 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:14:21,457 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-24 02:14:21,457 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94825334] [2022-02-24 02:14:21,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:14:21,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-24 02:14:21,458 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:14:21,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-24 02:14:21,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-02-24 02:14:21,458 INFO L87 Difference]: Start difference. First operand 7668 states and 11182 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) [2022-02-24 02:14:31,068 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:14:38,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:14:38,864 INFO L93 Difference]: Finished difference Result 12038 states and 17930 transitions. [2022-02-24 02:14:38,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-24 02:14:38,865 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 [2022-02-24 02:14:38,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:14:38,888 INFO L225 Difference]: With dead ends: 12038 [2022-02-24 02:14:38,888 INFO L226 Difference]: Without dead ends: 8914 [2022-02-24 02:14:38,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2022-02-24 02:14:38,898 INFO L933 BasicCegarLoop]: 650 mSDtfsCounter, 2226 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 2821 mSolverCounterSat, 976 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2259 SdHoareTripleChecker+Valid, 1271 SdHoareTripleChecker+Invalid, 3798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 976 IncrementalHoareTripleChecker+Valid, 2821 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2022-02-24 02:14:38,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2259 Valid, 1271 Invalid, 3798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [976 Valid, 2821 Invalid, 1 Unknown, 0 Unchecked, 11.3s Time] [2022-02-24 02:14:38,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8914 states. [2022-02-24 02:14:42,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8914 to 7788. [2022-02-24 02:14:42,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7788 states, 6220 states have (on average 1.4213826366559486) internal successors, (8841), 6428 states have internal predecessors, (8841), 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) [2022-02-24 02:14:42,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7788 states to 7788 states and 11382 transitions. [2022-02-24 02:14:42,195 INFO L78 Accepts]: Start accepts. Automaton has 7788 states and 11382 transitions. Word has length 80 [2022-02-24 02:14:42,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:14:42,195 INFO L470 AbstractCegarLoop]: Abstraction has 7788 states and 11382 transitions. [2022-02-24 02:14:42,195 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) [2022-02-24 02:14:42,196 INFO L276 IsEmpty]: Start isEmpty. Operand 7788 states and 11382 transitions. [2022-02-24 02:14:42,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-02-24 02:14:42,197 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:14:42,197 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:14:42,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-02-24 02:14:42,197 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:14:42,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:14:42,198 INFO L85 PathProgramCache]: Analyzing trace with hash -192162812, now seen corresponding path program 1 times [2022-02-24 02:14:42,198 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:14:42,198 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1471351103] [2022-02-24 02:14:42,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:14:42,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:14:42,209 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:14:42,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:14:42,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:14:42,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:14:42,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:14:42,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:14:42,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:14:42,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:14:42,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 02:14:42,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:14:42,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:14:42,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:14:42,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-24 02:14:42,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:14:42,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-02-24 02:14:42,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:14:42,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-24 02:14:42,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:14:42,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-02-24 02:14:42,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:14:42,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:14:42,730 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:14:42,730 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1471351103] [2022-02-24 02:14:42,730 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1471351103] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:14:42,730 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:14:42,730 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-24 02:14:42,730 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368409442] [2022-02-24 02:14:42,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:14:42,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-24 02:14:42,731 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:14:42,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-24 02:14:42,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-02-24 02:14:42,731 INFO L87 Difference]: Start difference. First operand 7788 states and 11382 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) [2022-02-24 02:14:51,807 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:15:04,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:15:04,461 INFO L93 Difference]: Finished difference Result 10871 states and 15958 transitions. [2022-02-24 02:15:04,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-24 02:15:04,462 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 [2022-02-24 02:15:04,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:15:04,478 INFO L225 Difference]: With dead ends: 10871 [2022-02-24 02:15:04,478 INFO L226 Difference]: Without dead ends: 6649 [2022-02-24 02:15:04,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=271, Invalid=989, Unknown=0, NotChecked=0, Total=1260 [2022-02-24 02:15:04,493 INFO L933 BasicCegarLoop]: 978 mSDtfsCounter, 4708 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 4366 mSolverCounterSat, 1859 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4757 SdHoareTripleChecker+Valid, 1778 SdHoareTripleChecker+Invalid, 6226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1859 IncrementalHoareTripleChecker+Valid, 4366 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2022-02-24 02:15:04,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4757 Valid, 1778 Invalid, 6226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1859 Valid, 4366 Invalid, 1 Unknown, 0 Unchecked, 15.6s Time] [2022-02-24 02:15:04,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6649 states. [2022-02-24 02:15:07,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6649 to 5650. [2022-02-24 02:15:07,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5650 states, 4550 states have (on average 1.4112087912087912) internal successors, (6421), 4671 states have internal predecessors, (6421), 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) [2022-02-24 02:15:07,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5650 states to 5650 states and 8011 transitions. [2022-02-24 02:15:07,162 INFO L78 Accepts]: Start accepts. Automaton has 5650 states and 8011 transitions. Word has length 84 [2022-02-24 02:15:07,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:15:07,162 INFO L470 AbstractCegarLoop]: Abstraction has 5650 states and 8011 transitions. [2022-02-24 02:15:07,162 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) [2022-02-24 02:15:07,162 INFO L276 IsEmpty]: Start isEmpty. Operand 5650 states and 8011 transitions. [2022-02-24 02:15:07,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-02-24 02:15:07,163 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:15:07,163 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] [2022-02-24 02:15:07,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-02-24 02:15:07,164 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:15:07,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:15:07,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1582799931, now seen corresponding path program 1 times [2022-02-24 02:15:07,164 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:15:07,164 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [603425323] [2022-02-24 02:15:07,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:15:07,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:15:07,176 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:15:07,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:07,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:15:07,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:07,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:15:07,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:07,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:15:07,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:07,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 02:15:07,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:07,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:15:07,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:07,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-24 02:15:07,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:07,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-24 02:15:07,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:07,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-02-24 02:15:07,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:07,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:15:07,737 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:15:07,737 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [603425323] [2022-02-24 02:15:07,737 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [603425323] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:15:07,738 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:15:07,738 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-24 02:15:07,738 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045115264] [2022-02-24 02:15:07,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:15:07,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-24 02:15:07,738 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:15:07,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-24 02:15:07,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-02-24 02:15:07,739 INFO L87 Difference]: Start difference. First operand 5650 states and 8011 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) [2022-02-24 02:15:16,920 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:15:24,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:15:24,346 INFO L93 Difference]: Finished difference Result 9634 states and 13887 transitions. [2022-02-24 02:15:24,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-24 02:15:24,347 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 [2022-02-24 02:15:24,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:15:24,362 INFO L225 Difference]: With dead ends: 9634 [2022-02-24 02:15:24,362 INFO L226 Difference]: Without dead ends: 6637 [2022-02-24 02:15:24,371 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 [2022-02-24 02:15:24,371 INFO L933 BasicCegarLoop]: 666 mSDtfsCounter, 1926 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 2784 mSolverCounterSat, 852 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1963 SdHoareTripleChecker+Valid, 1259 SdHoareTripleChecker+Invalid, 3637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 852 IncrementalHoareTripleChecker+Valid, 2784 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2022-02-24 02:15:24,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1963 Valid, 1259 Invalid, 3637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [852 Valid, 2784 Invalid, 1 Unknown, 0 Unchecked, 10.6s Time] [2022-02-24 02:15:24,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6637 states. [2022-02-24 02:15:27,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6637 to 5566. [2022-02-24 02:15:27,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5566 states, 4466 states have (on average 1.415360501567398) internal successors, (6321), 4587 states have internal predecessors, (6321), 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) [2022-02-24 02:15:27,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5566 states to 5566 states and 7911 transitions. [2022-02-24 02:15:27,030 INFO L78 Accepts]: Start accepts. Automaton has 5566 states and 7911 transitions. Word has length 81 [2022-02-24 02:15:27,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:15:27,031 INFO L470 AbstractCegarLoop]: Abstraction has 5566 states and 7911 transitions. [2022-02-24 02:15:27,031 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) [2022-02-24 02:15:27,031 INFO L276 IsEmpty]: Start isEmpty. Operand 5566 states and 7911 transitions. [2022-02-24 02:15:27,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-02-24 02:15:27,032 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:15:27,032 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] [2022-02-24 02:15:27,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-02-24 02:15:27,032 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:15:27,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:15:27,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1178730404, now seen corresponding path program 1 times [2022-02-24 02:15:27,033 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:15:27,033 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [768810541] [2022-02-24 02:15:27,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:15:27,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:15:27,044 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:15:27,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:27,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:15:27,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:27,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:15:27,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:27,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:15:27,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:27,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 02:15:27,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:27,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:15:27,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:27,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-24 02:15:27,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:27,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-02-24 02:15:27,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:27,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:15:27,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:27,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:15:27,627 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:15:27,627 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [768810541] [2022-02-24 02:15:27,627 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [768810541] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:15:27,627 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:15:27,627 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-24 02:15:27,627 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782427834] [2022-02-24 02:15:27,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:15:27,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-24 02:15:27,628 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:15:27,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-24 02:15:27,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-02-24 02:15:27,628 INFO L87 Difference]: Start difference. First operand 5566 states and 7911 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) [2022-02-24 02:15:41,472 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:15:50,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:15:50,470 INFO L93 Difference]: Finished difference Result 6492 states and 9438 transitions. [2022-02-24 02:15:50,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-24 02:15:50,470 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 [2022-02-24 02:15:50,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:15:50,484 INFO L225 Difference]: With dead ends: 6492 [2022-02-24 02:15:50,484 INFO L226 Difference]: Without dead ends: 6472 [2022-02-24 02:15:50,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=126, Invalid=524, Unknown=0, NotChecked=0, Total=650 [2022-02-24 02:15:50,487 INFO L933 BasicCegarLoop]: 663 mSDtfsCounter, 1448 mSDsluCounter, 1570 mSDsCounter, 0 mSdLazyCounter, 7191 mSolverCounterSat, 637 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1487 SdHoareTripleChecker+Valid, 2233 SdHoareTripleChecker+Invalid, 7829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 637 IncrementalHoareTripleChecker+Valid, 7191 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.6s IncrementalHoareTripleChecker+Time [2022-02-24 02:15:50,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1487 Valid, 2233 Invalid, 7829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [637 Valid, 7191 Invalid, 1 Unknown, 0 Unchecked, 17.6s Time] [2022-02-24 02:15:50,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6472 states. [2022-02-24 02:15:53,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6472 to 5562. [2022-02-24 02:15:53,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5562 states, 4463 states have (on average 1.4154156397042348) internal successors, (6317), 4584 states have internal predecessors, (6317), 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) [2022-02-24 02:15:53,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5562 states to 5562 states and 7905 transitions. [2022-02-24 02:15:53,212 INFO L78 Accepts]: Start accepts. Automaton has 5562 states and 7905 transitions. Word has length 81 [2022-02-24 02:15:53,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:15:53,212 INFO L470 AbstractCegarLoop]: Abstraction has 5562 states and 7905 transitions. [2022-02-24 02:15:53,212 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) [2022-02-24 02:15:53,212 INFO L276 IsEmpty]: Start isEmpty. Operand 5562 states and 7905 transitions. [2022-02-24 02:15:53,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-02-24 02:15:53,213 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:15:53,213 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] [2022-02-24 02:15:53,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-02-24 02:15:53,213 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:15:53,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:15:53,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1957637781, now seen corresponding path program 1 times [2022-02-24 02:15:53,214 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:15:53,214 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2105880107] [2022-02-24 02:15:53,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:15:53,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:15:53,226 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:15:53,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:53,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:15:53,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:53,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:15:53,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:53,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:15:53,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:53,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 02:15:53,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:53,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:15:53,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:53,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-24 02:15:53,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:53,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-24 02:15:53,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:53,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-24 02:15:53,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:15:53,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:15:53,935 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:15:53,936 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2105880107] [2022-02-24 02:15:53,936 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2105880107] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:15:53,936 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:15:53,936 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-24 02:15:53,936 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667515086] [2022-02-24 02:15:53,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:15:53,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-24 02:15:53,937 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:15:53,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-24 02:15:53,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-02-24 02:15:53,938 INFO L87 Difference]: Start difference. First operand 5562 states and 7905 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) [2022-02-24 02:16:01,006 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:16:07,240 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:16:15,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:16:15,498 INFO L93 Difference]: Finished difference Result 6677 states and 9710 transitions. [2022-02-24 02:16:15,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-24 02:16:15,499 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 [2022-02-24 02:16:15,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:16:15,516 INFO L225 Difference]: With dead ends: 6677 [2022-02-24 02:16:15,516 INFO L226 Difference]: Without dead ends: 6661 [2022-02-24 02:16:15,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=152, Invalid=604, Unknown=0, NotChecked=0, Total=756 [2022-02-24 02:16:15,519 INFO L933 BasicCegarLoop]: 664 mSDtfsCounter, 1740 mSDsluCounter, 1167 mSDsCounter, 0 mSdLazyCounter, 5146 mSolverCounterSat, 786 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1779 SdHoareTripleChecker+Valid, 1831 SdHoareTripleChecker+Invalid, 5934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 786 IncrementalHoareTripleChecker+Valid, 5146 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2022-02-24 02:16:15,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1779 Valid, 1831 Invalid, 5934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [786 Valid, 5146 Invalid, 2 Unknown, 0 Unchecked, 15.7s Time] [2022-02-24 02:16:15,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6661 states. [2022-02-24 02:16:18,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6661 to 5585. [2022-02-24 02:16:18,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5585 states, 4484 states have (on average 1.4139161462979482) internal successors, (6340), 4606 states have internal predecessors, (6340), 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) [2022-02-24 02:16:18,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5585 states to 5585 states and 7932 transitions. [2022-02-24 02:16:18,167 INFO L78 Accepts]: Start accepts. Automaton has 5585 states and 7932 transitions. Word has length 82 [2022-02-24 02:16:18,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:16:18,167 INFO L470 AbstractCegarLoop]: Abstraction has 5585 states and 7932 transitions. [2022-02-24 02:16:18,168 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) [2022-02-24 02:16:18,168 INFO L276 IsEmpty]: Start isEmpty. Operand 5585 states and 7932 transitions. [2022-02-24 02:16:18,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-02-24 02:16:18,169 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:16:18,169 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] [2022-02-24 02:16:18,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-02-24 02:16:18,169 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:16:18,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:16:18,169 INFO L85 PathProgramCache]: Analyzing trace with hash -252551860, now seen corresponding path program 1 times [2022-02-24 02:16:18,169 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:16:18,169 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772602451] [2022-02-24 02:16:18,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:16:18,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:16:18,181 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:16:18,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:18,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:16:18,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:18,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:16:18,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:18,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:16:18,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:18,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 02:16:18,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:18,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:16:18,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:18,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-24 02:16:18,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:18,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-24 02:16:18,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:18,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-24 02:16:18,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:18,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:16:18,692 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:16:18,692 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1772602451] [2022-02-24 02:16:18,692 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1772602451] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:16:18,692 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:16:18,692 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-24 02:16:18,692 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455239786] [2022-02-24 02:16:18,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:16:18,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-24 02:16:18,692 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:16:18,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-24 02:16:18,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-02-24 02:16:18,693 INFO L87 Difference]: Start difference. First operand 5585 states and 7932 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) [2022-02-24 02:16:25,382 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:16:31,818 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:16:40,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:16:40,117 INFO L93 Difference]: Finished difference Result 11681 states and 17002 transitions. [2022-02-24 02:16:40,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-24 02:16:40,118 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 [2022-02-24 02:16:40,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:16:40,141 INFO L225 Difference]: With dead ends: 11681 [2022-02-24 02:16:40,142 INFO L226 Difference]: Without dead ends: 6654 [2022-02-24 02:16:40,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2022-02-24 02:16:40,157 INFO L933 BasicCegarLoop]: 649 mSDtfsCounter, 1420 mSDsluCounter, 899 mSDsCounter, 0 mSdLazyCounter, 4620 mSolverCounterSat, 596 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1454 SdHoareTripleChecker+Valid, 1548 SdHoareTripleChecker+Invalid, 5218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 596 IncrementalHoareTripleChecker+Valid, 4620 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2022-02-24 02:16:40,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1454 Valid, 1548 Invalid, 5218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [596 Valid, 4620 Invalid, 2 Unknown, 0 Unchecked, 15.6s Time] [2022-02-24 02:16:40,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6654 states. [2022-02-24 02:16:43,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6654 to 5597. [2022-02-24 02:16:43,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5597 states, 4496 states have (on average 1.4128113879003559) internal successors, (6352), 4606 states have internal predecessors, (6352), 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) [2022-02-24 02:16:43,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5597 states to 5597 states and 7944 transitions. [2022-02-24 02:16:43,218 INFO L78 Accepts]: Start accepts. Automaton has 5597 states and 7944 transitions. Word has length 83 [2022-02-24 02:16:43,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:16:43,218 INFO L470 AbstractCegarLoop]: Abstraction has 5597 states and 7944 transitions. [2022-02-24 02:16:43,218 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) [2022-02-24 02:16:43,218 INFO L276 IsEmpty]: Start isEmpty. Operand 5597 states and 7944 transitions. [2022-02-24 02:16:43,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-02-24 02:16:43,219 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:16:43,219 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:16:43,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-02-24 02:16:43,220 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:16:43,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:16:43,220 INFO L85 PathProgramCache]: Analyzing trace with hash 5334329, now seen corresponding path program 1 times [2022-02-24 02:16:43,220 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:16:43,220 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1965034362] [2022-02-24 02:16:43,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:16:43,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:16:43,232 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:16:43,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:43,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:16:43,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:43,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:16:43,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:43,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:16:43,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:43,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 02:16:43,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:43,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:16:43,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:43,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-24 02:16:43,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:43,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-02-24 02:16:43,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:43,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:16:43,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:43,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-02-24 02:16:43,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:43,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:16:43,787 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:16:43,787 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1965034362] [2022-02-24 02:16:43,787 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1965034362] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:16:43,787 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:16:43,787 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-24 02:16:43,787 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389836237] [2022-02-24 02:16:43,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:16:43,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-24 02:16:43,787 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:16:43,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-24 02:16:43,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-02-24 02:16:43,788 INFO L87 Difference]: Start difference. First operand 5597 states and 7944 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) [2022-02-24 02:16:56,375 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:17:04,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:17:04,789 INFO L93 Difference]: Finished difference Result 6529 states and 9478 transitions. [2022-02-24 02:17:04,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-24 02:17:04,789 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 [2022-02-24 02:17:04,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:17:04,803 INFO L225 Difference]: With dead ends: 6529 [2022-02-24 02:17:04,803 INFO L226 Difference]: Without dead ends: 6507 [2022-02-24 02:17:04,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650 [2022-02-24 02:17:04,806 INFO L933 BasicCegarLoop]: 664 mSDtfsCounter, 1781 mSDsluCounter, 1312 mSDsCounter, 0 mSdLazyCounter, 5802 mSolverCounterSat, 729 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1819 SdHoareTripleChecker+Valid, 1976 SdHoareTripleChecker+Invalid, 6532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 729 IncrementalHoareTripleChecker+Valid, 5802 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2022-02-24 02:17:04,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1819 Valid, 1976 Invalid, 6532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [729 Valid, 5802 Invalid, 1 Unknown, 0 Unchecked, 15.6s Time] [2022-02-24 02:17:04,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6507 states. [2022-02-24 02:17:07,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6507 to 5596. [2022-02-24 02:17:07,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5596 states, 4496 states have (on average 1.4125889679715302) internal successors, (6351), 4605 states have internal predecessors, (6351), 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) [2022-02-24 02:17:07,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5596 states to 5596 states and 7941 transitions. [2022-02-24 02:17:07,649 INFO L78 Accepts]: Start accepts. Automaton has 5596 states and 7941 transitions. Word has length 84 [2022-02-24 02:17:07,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:17:07,649 INFO L470 AbstractCegarLoop]: Abstraction has 5596 states and 7941 transitions. [2022-02-24 02:17:07,649 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) [2022-02-24 02:17:07,649 INFO L276 IsEmpty]: Start isEmpty. Operand 5596 states and 7941 transitions. [2022-02-24 02:17:07,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-02-24 02:17:07,650 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:17:07,651 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:17:07,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-02-24 02:17:07,651 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:17:07,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:17:07,651 INFO L85 PathProgramCache]: Analyzing trace with hash -848816393, now seen corresponding path program 1 times [2022-02-24 02:17:07,651 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:17:07,651 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1276120349] [2022-02-24 02:17:07,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:17:07,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:17:07,663 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:17:07,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:07,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:17:07,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:07,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:17:07,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:07,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:17:07,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:08,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 02:17:08,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:08,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:17:08,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:08,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-24 02:17:08,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:08,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-02-24 02:17:08,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:08,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-24 02:17:08,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:08,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-02-24 02:17:08,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:08,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:17:08,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:08,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-24 02:17:08,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:08,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:17:08,135 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:17:08,135 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1276120349] [2022-02-24 02:17:08,135 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1276120349] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:17:08,135 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:17:08,135 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-24 02:17:08,135 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836456380] [2022-02-24 02:17:08,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:17:08,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-24 02:17:08,136 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:17:08,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-24 02:17:08,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-02-24 02:17:08,136 INFO L87 Difference]: Start difference. First operand 5596 states and 7941 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, (16), 10 states have call predecessors, (16), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-02-24 02:17:17,917 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:17:26,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:17:26,122 INFO L93 Difference]: Finished difference Result 9873 states and 14274 transitions. [2022-02-24 02:17:26,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-24 02:17:26,123 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, (16), 10 states have call predecessors, (16), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 90 [2022-02-24 02:17:26,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:17:26,142 INFO L225 Difference]: With dead ends: 9873 [2022-02-24 02:17:26,142 INFO L226 Difference]: Without dead ends: 6527 [2022-02-24 02:17:26,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=245, Invalid=685, Unknown=0, NotChecked=0, Total=930 [2022-02-24 02:17:26,150 INFO L933 BasicCegarLoop]: 639 mSDtfsCounter, 1470 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 3601 mSolverCounterSat, 641 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 1465 SdHoareTripleChecker+Invalid, 4243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 641 IncrementalHoareTripleChecker+Valid, 3601 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2022-02-24 02:17:26,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1507 Valid, 1465 Invalid, 4243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [641 Valid, 3601 Invalid, 1 Unknown, 0 Unchecked, 11.7s Time] [2022-02-24 02:17:26,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6527 states. [2022-02-24 02:17:29,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6527 to 5565. [2022-02-24 02:17:29,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5565 states, 4473 states have (on average 1.412921976302258) internal successors, (6320), 4580 states have internal predecessors, (6320), 673 states have call successors, (673), 349 states have call predecessors, (673), 418 states have return successors, (892), 657 states have call predecessors, (892), 655 states have call successors, (892) [2022-02-24 02:17:29,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5565 states to 5565 states and 7885 transitions. [2022-02-24 02:17:29,521 INFO L78 Accepts]: Start accepts. Automaton has 5565 states and 7885 transitions. Word has length 90 [2022-02-24 02:17:29,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:17:29,522 INFO L470 AbstractCegarLoop]: Abstraction has 5565 states and 7885 transitions. [2022-02-24 02:17:29,522 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, (16), 10 states have call predecessors, (16), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-02-24 02:17:29,522 INFO L276 IsEmpty]: Start isEmpty. Operand 5565 states and 7885 transitions. [2022-02-24 02:17:29,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-02-24 02:17:29,523 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:17:29,523 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:17:29,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-02-24 02:17:29,523 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:17:29,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:17:29,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1334190776, now seen corresponding path program 1 times [2022-02-24 02:17:29,524 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:17:29,524 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [749522214] [2022-02-24 02:17:29,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:17:29,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:17:29,537 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:17:29,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:29,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:17:29,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:29,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:17:29,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:29,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:17:29,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:29,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 02:17:29,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:29,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:17:29,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:29,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-24 02:17:29,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:29,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-24 02:17:29,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:30,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:17:30,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:30,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-24 02:17:30,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:30,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:17:30,162 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:17:30,162 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [749522214] [2022-02-24 02:17:30,162 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [749522214] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:17:30,162 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:17:30,162 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-24 02:17:30,162 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870396130] [2022-02-24 02:17:30,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:17:30,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-24 02:17:30,163 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:17:30,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-24 02:17:30,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-02-24 02:17:30,163 INFO L87 Difference]: Start difference. First operand 5565 states and 7885 transitions. Second operand has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 1 states have call successors, (9) [2022-02-24 02:17:40,638 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:17:48,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:17:48,003 INFO L93 Difference]: Finished difference Result 11608 states and 16865 transitions. [2022-02-24 02:17:48,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-24 02:17:48,004 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 1 states have call successors, (9) Word has length 86 [2022-02-24 02:17:48,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:17:48,020 INFO L225 Difference]: With dead ends: 11608 [2022-02-24 02:17:48,020 INFO L226 Difference]: Without dead ends: 6550 [2022-02-24 02:17:48,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2022-02-24 02:17:48,032 INFO L933 BasicCegarLoop]: 638 mSDtfsCounter, 2037 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 3606 mSolverCounterSat, 898 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2072 SdHoareTripleChecker+Valid, 1480 SdHoareTripleChecker+Invalid, 4505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 898 IncrementalHoareTripleChecker+Valid, 3606 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2022-02-24 02:17:48,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2072 Valid, 1480 Invalid, 4505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [898 Valid, 3606 Invalid, 1 Unknown, 0 Unchecked, 12.0s Time] [2022-02-24 02:17:48,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6550 states. [2022-02-24 02:17:50,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6550 to 5625. [2022-02-24 02:17:50,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5625 states, 4518 states have (on average 1.4088092076139884) internal successors, (6365), 4625 states have internal predecessors, (6365), 673 states have call successors, (673), 349 states have call predecessors, (673), 433 states have return successors, (907), 672 states have call predecessors, (907), 655 states have call successors, (907) [2022-02-24 02:17:50,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5625 states to 5625 states and 7945 transitions. [2022-02-24 02:17:50,818 INFO L78 Accepts]: Start accepts. Automaton has 5625 states and 7945 transitions. Word has length 86 [2022-02-24 02:17:50,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:17:50,819 INFO L470 AbstractCegarLoop]: Abstraction has 5625 states and 7945 transitions. [2022-02-24 02:17:50,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 1 states have call successors, (9) [2022-02-24 02:17:50,819 INFO L276 IsEmpty]: Start isEmpty. Operand 5625 states and 7945 transitions. [2022-02-24 02:17:50,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-02-24 02:17:50,820 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:17:50,820 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:17:50,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-02-24 02:17:50,820 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:17:50,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:17:50,821 INFO L85 PathProgramCache]: Analyzing trace with hash -680978953, now seen corresponding path program 1 times [2022-02-24 02:17:50,821 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:17:50,821 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1024952133] [2022-02-24 02:17:50,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:17:50,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:17:50,833 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:17:50,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:51,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:17:51,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:51,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:17:51,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:51,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:17:51,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:51,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 02:17:51,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:51,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:17:51,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:51,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-24 02:17:51,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:51,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-24 02:17:51,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:51,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 02:17:51,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:51,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-24 02:17:51,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:51,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:17:51,476 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:17:51,476 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1024952133] [2022-02-24 02:17:51,476 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1024952133] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:17:51,476 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:17:51,476 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-24 02:17:51,476 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262863440] [2022-02-24 02:17:51,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:17:51,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-24 02:17:51,477 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:17:51,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-24 02:17:51,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-02-24 02:17:51,477 INFO L87 Difference]: Start difference. First operand 5625 states and 7945 transitions. Second operand has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 1 states have call successors, (9) [2022-02-24 02:17:58,377 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:18:05,698 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:18:15,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:18:15,101 INFO L93 Difference]: Finished difference Result 11730 states and 16948 transitions. [2022-02-24 02:18:15,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-24 02:18:15,102 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 1 states have call successors, (9) Word has length 86 [2022-02-24 02:18:15,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:18:15,120 INFO L225 Difference]: With dead ends: 11730 [2022-02-24 02:18:15,120 INFO L226 Difference]: Without dead ends: 6631 [2022-02-24 02:18:15,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=129, Invalid=573, Unknown=0, NotChecked=0, Total=702 [2022-02-24 02:18:15,133 INFO L933 BasicCegarLoop]: 632 mSDtfsCounter, 1604 mSDsluCounter, 1052 mSDsCounter, 0 mSdLazyCounter, 5146 mSolverCounterSat, 723 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1639 SdHoareTripleChecker+Valid, 1684 SdHoareTripleChecker+Invalid, 5871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 723 IncrementalHoareTripleChecker+Valid, 5146 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.2s IncrementalHoareTripleChecker+Time [2022-02-24 02:18:15,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1639 Valid, 1684 Invalid, 5871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [723 Valid, 5146 Invalid, 2 Unknown, 0 Unchecked, 17.2s Time] [2022-02-24 02:18:15,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6631 states. [2022-02-24 02:18:18,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6631 to 5646. [2022-02-24 02:18:18,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5646 states, 4539 states have (on average 1.4069178233090989) internal successors, (6386), 4649 states have internal predecessors, (6386), 673 states have call successors, (673), 349 states have call predecessors, (673), 433 states have return successors, (907), 669 states have call predecessors, (907), 655 states have call successors, (907) [2022-02-24 02:18:18,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5646 states to 5646 states and 7966 transitions. [2022-02-24 02:18:18,637 INFO L78 Accepts]: Start accepts. Automaton has 5646 states and 7966 transitions. Word has length 86 [2022-02-24 02:18:18,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:18:18,637 INFO L470 AbstractCegarLoop]: Abstraction has 5646 states and 7966 transitions. [2022-02-24 02:18:18,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 1 states have call successors, (9) [2022-02-24 02:18:18,638 INFO L276 IsEmpty]: Start isEmpty. Operand 5646 states and 7966 transitions. [2022-02-24 02:18:18,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-02-24 02:18:18,682 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:18:18,682 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:18:18,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-02-24 02:18:18,683 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:18:18,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:18:18,683 INFO L85 PathProgramCache]: Analyzing trace with hash -520968227, now seen corresponding path program 1 times [2022-02-24 02:18:18,683 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:18:18,683 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1887997051] [2022-02-24 02:18:18,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:18:18,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:18:18,696 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:18:18,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:18:19,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:18:19,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:18:19,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:18:19,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:18:19,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:18:19,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:18:19,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 02:18:19,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:18:19,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:18:19,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:18:19,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-24 02:18:19,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:18:19,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-24 02:18:19,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:18:19,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 02:18:19,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:18:19,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 02:18:19,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:18:19,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-02-24 02:18:19,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:18:19,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-02-24 02:18:19,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:18:19,507 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-24 02:18:19,507 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:18:19,507 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1887997051] [2022-02-24 02:18:19,507 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1887997051] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:18:19,507 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:18:19,507 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-24 02:18:19,507 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892494827] [2022-02-24 02:18:19,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:18:19,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-24 02:18:19,508 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:18:19,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-24 02:18:19,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2022-02-24 02:18:19,508 INFO L87 Difference]: Start difference. First operand 5646 states and 7966 transitions. Second operand has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 6 states have internal predecessors, (62), 2 states have call successors, (13), 11 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 1 states have call successors, (11) [2022-02-24 02:18:28,432 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:18:30,610 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:18:32,776 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:18:34,994 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:18:37,231 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:18:44,557 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:18:54,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:18:54,158 INFO L93 Difference]: Finished difference Result 6588 states and 9527 transitions. [2022-02-24 02:18:54,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-24 02:18:54,159 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 6 states have internal predecessors, (62), 2 states have call successors, (13), 11 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 1 states have call successors, (11) Word has length 88 [2022-02-24 02:18:54,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:18:54,173 INFO L225 Difference]: With dead ends: 6588 [2022-02-24 02:18:54,174 INFO L226 Difference]: Without dead ends: 6572 [2022-02-24 02:18:54,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=135, Invalid=621, Unknown=0, NotChecked=0, Total=756 [2022-02-24 02:18:54,177 INFO L933 BasicCegarLoop]: 673 mSDtfsCounter, 1664 mSDsluCounter, 1692 mSDsCounter, 0 mSdLazyCounter, 7297 mSolverCounterSat, 748 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1703 SdHoareTripleChecker+Valid, 2365 SdHoareTripleChecker+Invalid, 8051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 748 IncrementalHoareTripleChecker+Valid, 7297 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.8s IncrementalHoareTripleChecker+Time [2022-02-24 02:18:54,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1703 Valid, 2365 Invalid, 8051 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [748 Valid, 7297 Invalid, 6 Unknown, 0 Unchecked, 28.8s Time] [2022-02-24 02:18:54,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6572 states. [2022-02-24 02:18:57,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6572 to 5646. [2022-02-24 02:18:57,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5646 states, 4539 states have (on average 1.4069178233090989) internal successors, (6386), 4649 states have internal predecessors, (6386), 673 states have call successors, (673), 349 states have call predecessors, (673), 433 states have return successors, (907), 669 states have call predecessors, (907), 655 states have call successors, (907) [2022-02-24 02:18:57,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5646 states to 5646 states and 7966 transitions. [2022-02-24 02:18:57,149 INFO L78 Accepts]: Start accepts. Automaton has 5646 states and 7966 transitions. Word has length 88 [2022-02-24 02:18:57,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:18:57,150 INFO L470 AbstractCegarLoop]: Abstraction has 5646 states and 7966 transitions. [2022-02-24 02:18:57,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 6 states have internal predecessors, (62), 2 states have call successors, (13), 11 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 1 states have call successors, (11) [2022-02-24 02:18:57,150 INFO L276 IsEmpty]: Start isEmpty. Operand 5646 states and 7966 transitions. [2022-02-24 02:18:57,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-24 02:18:57,151 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:18:57,151 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:18:57,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-02-24 02:18:57,151 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:18:57,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:18:57,152 INFO L85 PathProgramCache]: Analyzing trace with hash -243689622, now seen corresponding path program 1 times [2022-02-24 02:18:57,152 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:18:57,152 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1362032394] [2022-02-24 02:18:57,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:18:57,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:18:57,166 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:18:57,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:18:57,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:18:57,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:18:57,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:18:57,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:18:57,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:18:57,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:18:57,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 02:18:57,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:18:57,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:18:57,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:18:57,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-24 02:18:57,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:18:57,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-02-24 02:18:57,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:18:57,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-24 02:18:57,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:18:57,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:18:57,919 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:18:57,920 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1362032394] [2022-02-24 02:18:57,920 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1362032394] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:18:57,920 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:18:57,920 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-24 02:18:57,920 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308010432] [2022-02-24 02:18:57,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:18:57,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-24 02:18:57,920 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:18:57,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-24 02:18:57,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2022-02-24 02:18:57,921 INFO L87 Difference]: Start difference. First operand 5646 states and 7966 transitions. Second operand has 17 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 7 states have internal predecessors, (67), 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)