/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-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 22:24:52,706 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 22:24:52,707 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 22:24:52,757 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 22:24:52,758 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 22:24:52,758 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 22:24:52,759 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 22:24:52,768 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 22:24:52,769 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 22:24:52,772 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 22:24:52,773 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 22:24:52,773 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 22:24:52,773 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 22:24:52,774 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 22:24:52,775 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 22:24:52,775 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 22:24:52,777 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 22:24:52,777 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 22:24:52,778 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 22:24:52,779 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 22:24:52,780 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 22:24:52,782 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 22:24:52,783 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 22:24:52,784 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 22:24:52,789 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 22:24:52,797 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 22:24:52,797 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 22:24:52,797 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 22:24:52,799 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-01-31 22:24:52,808 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 22:24:52,809 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 22:24:52,810 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 22:24:52,810 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 22:24:52,810 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 22:24:52,810 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 22:24:52,810 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 22:24:52,810 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 22:24:52,810 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 22:24:52,811 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 22:24:52,811 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 22:24:52,811 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 22:24:52,811 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 22:24:52,811 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 22:24:52,811 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 22:24:52,812 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 22:24:52,812 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 22:24:52,812 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 22:24:52,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 22:24:52,812 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 22:24:52,812 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 22:24:52,812 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 22:24:52,812 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-01-31 22:24:52,812 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 22:24:53,001 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 22:24:53,018 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 22:24:53,020 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 22:24:53,020 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 22:24:53,022 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 22:24:53,022 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers/floppy.i.cil-1.c [2022-01-31 22:24:53,062 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/575121083/74ae4067ee004f4b967c5f5d6485c8b9/FLAG839b20fdd [2022-01-31 22:24:53,593 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 22:24:53,593 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/floppy.i.cil-1.c [2022-01-31 22:24:53,638 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/575121083/74ae4067ee004f4b967c5f5d6485c8b9/FLAG839b20fdd [2022-01-31 22:24:53,809 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/575121083/74ae4067ee004f4b967c5f5d6485c8b9 [2022-01-31 22:24:53,811 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 22:24:53,812 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 22:24:53,815 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 22:24:53,815 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 22:24:53,818 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 22:24:53,818 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:24:53" (1/1) ... [2022-01-31 22:24:53,819 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a8f470f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:24:53, skipping insertion in model container [2022-01-31 22:24:53,819 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:24:53" (1/1) ... [2022-01-31 22:24:53,823 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 22:24:53,896 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 22:24:54,256 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-1.c[76734,76747] [2022-01-31 22:24:54,527 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 22:24:54,557 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 22:24:54,606 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-1.c[76734,76747] [2022-01-31 22:24:54,813 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 22:24:54,849 INFO L208 MainTranslator]: Completed translation [2022-01-31 22:24:54,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:24:54 WrapperNode [2022-01-31 22:24:54,850 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 22:24:54,851 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 22:24:54,851 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 22:24:54,851 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 22:24:54,859 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:24:54" (1/1) ... [2022-01-31 22:24:54,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:24:54" (1/1) ... [2022-01-31 22:24:54,947 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:24:54" (1/1) ... [2022-01-31 22:24:54,947 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:24:54" (1/1) ... [2022-01-31 22:24:55,025 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:24:54" (1/1) ... [2022-01-31 22:24:55,049 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:24:54" (1/1) ... [2022-01-31 22:24:55,068 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:24:54" (1/1) ... [2022-01-31 22:24:55,090 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 22:24:55,091 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 22:24:55,091 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 22:24:55,091 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 22:24:55,092 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:24:54" (1/1) ... [2022-01-31 22:24:55,097 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 22:24:55,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 22:24:55,117 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) [2022-01-31 22:24:55,118 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 [2022-01-31 22:24:55,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 22:24:55,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 22:24:55,139 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 22:24:55,139 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedExchange [2022-01-31 22:24:55,140 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-01-31 22:24:55,140 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-01-31 22:24:55,140 INFO L138 BoogieDeclarations]: Found implementation of procedure DriverEntry [2022-01-31 22:24:55,140 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyUnload [2022-01-31 22:24:55,140 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyAddDevice [2022-01-31 22:24:55,140 INFO L138 BoogieDeclarations]: Found implementation of procedure FlConfigCallBack [2022-01-31 22:24:55,141 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAcpiConfigureFloppy [2022-01-31 22:24:55,141 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2022-01-31 22:24:55,141 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2022-01-31 22:24:55,141 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyDeviceControl [2022-01-31 22:24:55,141 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnp [2022-01-31 22:24:55,141 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyStartDevice [2022-01-31 22:24:55,141 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2022-01-31 22:24:55,141 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPower [2022-01-31 22:24:55,141 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyReadWrite [2022-01-31 22:24:55,141 INFO L138 BoogieDeclarations]: Found implementation of procedure FlInterpretError [2022-01-31 22:24:55,141 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFinishOperation [2022-01-31 22:24:55,141 INFO L138 BoogieDeclarations]: Found implementation of procedure FlStartDrive [2022-01-31 22:24:55,141 INFO L138 BoogieDeclarations]: Found implementation of procedure FlDatarateSpecifyConfigure [2022-01-31 22:24:55,142 INFO L138 BoogieDeclarations]: Found implementation of procedure FlRecalibrateDrive [2022-01-31 22:24:55,142 INFO L138 BoogieDeclarations]: Found implementation of procedure FlDetermineMediaType [2022-01-31 22:24:55,142 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAllocateIoBuffer [2022-01-31 22:24:55,142 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFreeIoBuffer [2022-01-31 22:24:55,142 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyThread [2022-01-31 22:24:55,142 INFO L138 BoogieDeclarations]: Found implementation of procedure FlConsolidateMediaTypeWithBootSector [2022-01-31 22:24:55,142 INFO L138 BoogieDeclarations]: Found implementation of procedure FlCheckBootSector [2022-01-31 22:24:55,142 INFO L138 BoogieDeclarations]: Found implementation of procedure FlReadWriteTrack [2022-01-31 22:24:55,142 INFO L138 BoogieDeclarations]: Found implementation of procedure FlReadWrite [2022-01-31 22:24:55,142 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFormat [2022-01-31 22:24:55,142 INFO L138 BoogieDeclarations]: Found implementation of procedure FlCheckFormatParameters [2022-01-31 22:24:55,142 INFO L138 BoogieDeclarations]: Found implementation of procedure FlIssueCommand [2022-01-31 22:24:55,142 INFO L138 BoogieDeclarations]: Found implementation of procedure FlInitializeControllerHardware [2022-01-31 22:24:55,142 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2022-01-31 22:24:55,143 INFO L138 BoogieDeclarations]: Found implementation of procedure FlHdbit [2022-01-31 22:24:55,143 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyQueueRequest [2022-01-31 22:24:55,143 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCancelQueuedRequest [2022-01-31 22:24:55,143 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2022-01-31 22:24:55,143 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-01-31 22:24:55,143 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 22:24:55,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAcquireFastMutex [2022-01-31 22:24:55,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ExReleaseFastMutex [2022-01-31 22:24:55,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2022-01-31 22:24:55,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ExFreePool [2022-01-31 22:24:55,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertHeadList [2022-01-31 22:24:55,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertTailList [2022-01-31 22:24:55,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedRemoveHeadList [2022-01-31 22:24:55,143 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAllocateMdl [2022-01-31 22:24:55,143 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAttachDeviceToDeviceStack [2022-01-31 22:24:55,144 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildAsynchronousFsdRequest [2022-01-31 22:24:55,144 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2022-01-31 22:24:55,144 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateDevice [2022-01-31 22:24:55,145 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateSymbolicLink [2022-01-31 22:24:55,145 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteDevice [2022-01-31 22:24:55,145 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2022-01-31 22:24:55,145 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDetachDevice [2022-01-31 22:24:55,145 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeIrp [2022-01-31 22:24:55,145 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeMdl [2022-01-31 22:24:55,145 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2022-01-31 22:24:55,145 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2022-01-31 22:24:55,145 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2022-01-31 22:24:55,145 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReleaseCancelSpinLock [2022-01-31 22:24:55,145 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-01-31 22:24:55,145 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetHardErrorOrVerifyDevice [2022-01-31 22:24:55,145 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-01-31 22:24:55,145 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-01-31 22:24:55,146 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-01-31 22:24:55,146 INFO L138 BoogieDeclarations]: Found implementation of procedure KeAcquireSpinLockRaiseToDpc [2022-01-31 22:24:55,146 INFO L138 BoogieDeclarations]: Found implementation of procedure KeDelayExecutionThread [2022-01-31 22:24:55,146 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeEvent [2022-01-31 22:24:55,146 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSemaphore [2022-01-31 22:24:55,146 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSpinLock [2022-01-31 22:24:55,146 INFO L138 BoogieDeclarations]: Found implementation of procedure KeReleaseSemaphore [2022-01-31 22:24:55,146 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-01-31 22:24:55,146 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-01-31 22:24:55,146 INFO L138 BoogieDeclarations]: Found implementation of procedure MmAllocateContiguousMemory [2022-01-31 22:24:55,146 INFO L138 BoogieDeclarations]: Found implementation of procedure MmFreeContiguousMemory [2022-01-31 22:24:55,146 INFO L138 BoogieDeclarations]: Found implementation of procedure MmMapLockedPagesSpecifyCache [2022-01-31 22:24:55,146 INFO L138 BoogieDeclarations]: Found implementation of procedure MmPageEntireDriver [2022-01-31 22:24:55,147 INFO L138 BoogieDeclarations]: Found implementation of procedure MmResetDriverPaging [2022-01-31 22:24:55,147 INFO L138 BoogieDeclarations]: Found implementation of procedure MmUnlockPages [2022-01-31 22:24:55,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2022-01-31 22:24:55,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ObfDereferenceObject [2022-01-31 22:24:55,147 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-01-31 22:24:55,147 INFO L138 BoogieDeclarations]: Found implementation of procedure PoStartNextPowerIrp [2022-01-31 22:24:55,147 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2022-01-31 22:24:55,147 INFO L138 BoogieDeclarations]: Found implementation of procedure PsTerminateSystemThread [2022-01-31 22:24:55,147 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlAnsiStringToUnicodeString [2022-01-31 22:24:55,147 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCompareMemory [2022-01-31 22:24:55,147 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCopyUnicodeString [2022-01-31 22:24:55,147 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlDeleteRegistryValue [2022-01-31 22:24:55,147 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlFreeUnicodeString [2022-01-31 22:24:55,147 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitString [2022-01-31 22:24:55,147 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitUnicodeString [2022-01-31 22:24:55,147 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlQueryRegistryValues [2022-01-31 22:24:55,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-01-31 22:24:55,148 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-01-31 22:24:55,148 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-01-31 22:24:55,148 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-01-31 22:24:55,148 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 22:24:55,148 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 22:24:55,148 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 22:24:55,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 22:24:55,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-01-31 22:24:55,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 22:24:55,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-01-31 22:24:55,148 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2022-01-31 22:24:55,148 INFO L130 BoogieDeclarations]: Found specification of procedure swprintf [2022-01-31 22:24:55,148 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2022-01-31 22:24:55,149 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2022-01-31 22:24:55,149 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2022-01-31 22:24:55,149 INFO L130 BoogieDeclarations]: Found specification of procedure RtlQueryRegistryValues [2022-01-31 22:24:55,149 INFO L130 BoogieDeclarations]: Found specification of procedure RtlDeleteRegistryValue [2022-01-31 22:24:55,149 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitString [2022-01-31 22:24:55,149 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitUnicodeString [2022-01-31 22:24:55,149 INFO L130 BoogieDeclarations]: Found specification of procedure RtlAnsiStringToUnicodeString [2022-01-31 22:24:55,149 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCopyUnicodeString [2022-01-31 22:24:55,149 INFO L130 BoogieDeclarations]: Found specification of procedure RtlFreeUnicodeString [2022-01-31 22:24:55,149 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCompareMemory [2022-01-31 22:24:55,149 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedExchange [2022-01-31 22:24:55,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 22:24:55,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 22:24:55,149 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeEvent [2022-01-31 22:24:55,149 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-01-31 22:24:55,149 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSemaphore [2022-01-31 22:24:55,149 INFO L130 BoogieDeclarations]: Found specification of procedure KeReleaseSemaphore [2022-01-31 22:24:55,150 INFO L130 BoogieDeclarations]: Found specification of procedure KeDelayExecutionThread [2022-01-31 22:24:55,150 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-01-31 22:24:55,150 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSpinLock [2022-01-31 22:24:55,150 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2022-01-31 22:24:55,150 INFO L130 BoogieDeclarations]: Found specification of procedure ExFreePool [2022-01-31 22:24:55,150 INFO L130 BoogieDeclarations]: Found specification of procedure ExAcquireFastMutex [2022-01-31 22:24:55,150 INFO L130 BoogieDeclarations]: Found specification of procedure ExReleaseFastMutex [2022-01-31 22:24:55,150 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertHeadList [2022-01-31 22:24:55,150 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertTailList [2022-01-31 22:24:55,150 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedRemoveHeadList [2022-01-31 22:24:55,150 INFO L130 BoogieDeclarations]: Found specification of procedure MmUnlockPages [2022-01-31 22:24:55,150 INFO L130 BoogieDeclarations]: Found specification of procedure MmMapLockedPagesSpecifyCache [2022-01-31 22:24:55,150 INFO L130 BoogieDeclarations]: Found specification of procedure MmAllocateContiguousMemory [2022-01-31 22:24:55,150 INFO L130 BoogieDeclarations]: Found specification of procedure MmFreeContiguousMemory [2022-01-31 22:24:55,150 INFO L130 BoogieDeclarations]: Found specification of procedure MmResetDriverPaging [2022-01-31 22:24:55,150 INFO L130 BoogieDeclarations]: Found specification of procedure MmPageEntireDriver [2022-01-31 22:24:55,150 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2022-01-31 22:24:55,151 INFO L130 BoogieDeclarations]: Found specification of procedure PsTerminateSystemThread [2022-01-31 22:24:55,151 INFO L130 BoogieDeclarations]: Found specification of procedure IoAllocateMdl [2022-01-31 22:24:55,151 INFO L130 BoogieDeclarations]: Found specification of procedure IoAttachDeviceToDeviceStack [2022-01-31 22:24:55,151 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildAsynchronousFsdRequest [2022-01-31 22:24:55,151 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2022-01-31 22:24:55,151 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-01-31 22:24:55,151 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-01-31 22:24:55,151 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateDevice [2022-01-31 22:24:55,151 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateSymbolicLink [2022-01-31 22:24:55,151 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteDevice [2022-01-31 22:24:55,151 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2022-01-31 22:24:55,151 INFO L130 BoogieDeclarations]: Found specification of procedure IoDetachDevice [2022-01-31 22:24:55,151 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeIrp [2022-01-31 22:24:55,151 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeMdl [2022-01-31 22:24:55,151 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2022-01-31 22:24:55,151 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2022-01-31 22:24:55,151 INFO L130 BoogieDeclarations]: Found specification of procedure IoReleaseCancelSpinLock [2022-01-31 22:24:55,151 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetHardErrorOrVerifyDevice [2022-01-31 22:24:55,152 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2022-01-31 22:24:55,152 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-01-31 22:24:55,152 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-01-31 22:24:55,152 INFO L130 BoogieDeclarations]: Found specification of procedure PoStartNextPowerIrp [2022-01-31 22:24:55,152 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2022-01-31 22:24:55,152 INFO L130 BoogieDeclarations]: Found specification of procedure ObfDereferenceObject [2022-01-31 22:24:55,152 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-01-31 22:24:55,152 INFO L130 BoogieDeclarations]: Found specification of procedure DriverEntry [2022-01-31 22:24:55,152 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyUnload [2022-01-31 22:24:55,152 INFO L130 BoogieDeclarations]: Found specification of procedure FlConfigCallBack [2022-01-31 22:24:55,152 INFO L130 BoogieDeclarations]: Found specification of procedure FlInitializeControllerHardware [2022-01-31 22:24:55,152 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2022-01-31 22:24:55,152 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyDeviceControl [2022-01-31 22:24:55,152 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyReadWrite [2022-01-31 22:24:55,152 INFO L130 BoogieDeclarations]: Found specification of procedure FlRecalibrateDrive [2022-01-31 22:24:55,152 INFO L130 BoogieDeclarations]: Found specification of procedure FlDatarateSpecifyConfigure [2022-01-31 22:24:55,152 INFO L130 BoogieDeclarations]: Found specification of procedure FlStartDrive [2022-01-31 22:24:55,152 INFO L130 BoogieDeclarations]: Found specification of procedure FlFinishOperation [2022-01-31 22:24:55,153 INFO L130 BoogieDeclarations]: Found specification of procedure FlDetermineMediaType [2022-01-31 22:24:55,153 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyThread [2022-01-31 22:24:55,153 INFO L130 BoogieDeclarations]: Found specification of procedure FlReadWrite [2022-01-31 22:24:55,153 INFO L130 BoogieDeclarations]: Found specification of procedure FlFormat [2022-01-31 22:24:55,153 INFO L130 BoogieDeclarations]: Found specification of procedure FlIssueCommand [2022-01-31 22:24:55,153 INFO L130 BoogieDeclarations]: Found specification of procedure FlCheckFormatParameters [2022-01-31 22:24:55,153 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2022-01-31 22:24:55,153 INFO L130 BoogieDeclarations]: Found specification of procedure FlInterpretError [2022-01-31 22:24:55,153 INFO L130 BoogieDeclarations]: Found specification of procedure FlAllocateIoBuffer [2022-01-31 22:24:55,153 INFO L130 BoogieDeclarations]: Found specification of procedure FlFreeIoBuffer [2022-01-31 22:24:55,153 INFO L130 BoogieDeclarations]: Found specification of procedure FlConsolidateMediaTypeWithBootSector [2022-01-31 22:24:55,153 INFO L130 BoogieDeclarations]: Found specification of procedure FlCheckBootSector [2022-01-31 22:24:55,153 INFO L130 BoogieDeclarations]: Found specification of procedure FlReadWriteTrack [2022-01-31 22:24:55,153 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2022-01-31 22:24:55,153 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyAddDevice [2022-01-31 22:24:55,153 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnp [2022-01-31 22:24:55,153 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPower [2022-01-31 22:24:55,153 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2022-01-31 22:24:55,153 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyQueueRequest [2022-01-31 22:24:55,154 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyStartDevice [2022-01-31 22:24:55,154 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2022-01-31 22:24:55,154 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCancelQueuedRequest [2022-01-31 22:24:55,154 INFO L130 BoogieDeclarations]: Found specification of procedure FlAcpiConfigureFloppy [2022-01-31 22:24:55,154 INFO L130 BoogieDeclarations]: Found specification of procedure FlHdbit [2022-01-31 22:24:55,154 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-01-31 22:24:55,154 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-01-31 22:24:55,154 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-01-31 22:24:55,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-31 22:24:55,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-01-31 22:24:55,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-01-31 22:24:55,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 22:24:55,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 22:24:55,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-01-31 22:24:55,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-01-31 22:24:55,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-01-31 22:24:55,154 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-01-31 22:24:55,154 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 22:24:55,155 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-01-31 22:24:55,155 INFO L130 BoogieDeclarations]: Found specification of procedure KeAcquireSpinLockRaiseToDpc [2022-01-31 22:24:55,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 22:24:55,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 22:24:55,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 22:24:55,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-01-31 22:24:55,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-01-31 22:24:55,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-01-31 22:24:55,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-01-31 22:24:55,653 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 22:24:55,655 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 22:24:55,692 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:24:55,762 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 22:24:55,762 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 22:24:55,762 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:24:55,767 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 22:24:55,767 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 22:24:57,215 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:24:57,220 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 22:24:57,220 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 22:24:57,220 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:24:57,226 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 22:24:57,226 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 22:24:57,245 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:24:57,250 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 22:24:57,250 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 22:24:57,282 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:24:57,292 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 22:24:57,292 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 22:24:57,292 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:24:57,299 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 22:24:57,300 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 22:24:57,300 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:24:57,311 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 22:24:57,311 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 22:24:57,363 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:24:57,435 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2022-01-31 22:24:57,436 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2022-01-31 22:24:57,499 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:24:57,507 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 22:24:57,507 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 22:24:57,508 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:24:57,512 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 22:24:57,512 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 22:24:57,512 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:24:57,518 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 22:24:57,518 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 22:24:57,528 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:24:57,533 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 22:24:57,533 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 22:24:57,533 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:24:57,536 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 22:24:57,536 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 22:25:02,381 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:25:02,393 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-01-31 22:25:02,393 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-01-31 22:25:02,438 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:25:02,631 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !false; [2022-01-31 22:25:02,631 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##37: assume false; [2022-01-31 22:25:02,884 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:25:02,888 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 22:25:02,888 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 22:25:02,941 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:25:02,963 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2022-01-31 22:25:02,963 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2022-01-31 22:25:02,965 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:25:03,076 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-01-31 22:25:03,076 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-01-31 22:25:03,076 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:25:03,118 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2022-01-31 22:25:03,118 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2022-01-31 22:25:13,996 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:25:13,999 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 22:25:13,999 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 22:25:14,078 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:25:14,081 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 22:25:14,081 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 22:25:14,097 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:25:16,345 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume !false; [2022-01-31 22:25:16,345 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume false; [2022-01-31 22:25:16,380 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:25:16,544 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##48: assume !false; [2022-01-31 22:25:16,544 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##47: assume false; [2022-01-31 22:25:16,546 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:25:16,558 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-01-31 22:25:16,558 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-01-31 22:25:16,558 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:25:16,587 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2022-01-31 22:25:16,587 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2022-01-31 22:25:16,589 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:25:16,597 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-01-31 22:25:16,597 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-01-31 22:25:16,629 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:25:16,632 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 22:25:16,632 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 22:25:16,641 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:25:16,645 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 22:25:16,645 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 22:25:16,646 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:25:16,728 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##46: assume !false; [2022-01-31 22:25:16,729 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##45: assume false; [2022-01-31 22:25:16,757 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:25:19,066 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume !false; [2022-01-31 22:25:19,066 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##13: assume false; [2022-01-31 22:25:19,092 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 22:25:19,107 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 22:25:19,107 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2022-01-31 22:25:19,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:25:19 BoogieIcfgContainer [2022-01-31 22:25:19,111 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 22:25:19,112 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 22:25:19,112 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 22:25:19,115 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 22:25:19,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 10:24:53" (1/3) ... [2022-01-31 22:25:19,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2432176f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:25:19, skipping insertion in model container [2022-01-31 22:25:19,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:24:54" (2/3) ... [2022-01-31 22:25:19,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2432176f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:25:19, skipping insertion in model container [2022-01-31 22:25:19,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:25:19" (3/3) ... [2022-01-31 22:25:19,117 INFO L111 eAbstractionObserver]: Analyzing ICFG floppy.i.cil-1.c [2022-01-31 22:25:19,120 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 22:25:19,120 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 22:25:19,160 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 22:25:19,168 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 [2022-01-31 22:25:19,169 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 22:25:19,203 INFO L276 IsEmpty]: Start isEmpty. Operand has 1449 states, 1151 states have (on average 1.523023457862728) internal successors, (1753), 1192 states have internal predecessors, (1753), 221 states have call successors, (221), 72 states have call predecessors, (221), 72 states have return successors, (221), 215 states have call predecessors, (221), 221 states have call successors, (221) [2022-01-31 22:25:19,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-31 22:25:19,213 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:25:19,214 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] [2022-01-31 22:25:19,214 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:25:19,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:25:19,217 INFO L85 PathProgramCache]: Analyzing trace with hash 760330439, now seen corresponding path program 1 times [2022-01-31 22:25:19,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:25:19,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1121931475] [2022-01-31 22:25:19,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:25:19,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:25:19,331 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:25:19,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:25:19,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:25:19,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:25:19,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:25:19,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:25:19,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:25:19,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:25:19,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 22:25:19,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:25:19,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:25:19,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:25:20,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:25:20,007 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:25:20,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1121931475] [2022-01-31 22:25:20,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1121931475] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:25:20,009 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:25:20,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-31 22:25:20,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169116143] [2022-01-31 22:25:20,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:25:20,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-31 22:25:20,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:25:20,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-31 22:25:20,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-31 22:25:20,037 INFO L87 Difference]: Start difference. First operand has 1449 states, 1151 states have (on average 1.523023457862728) internal successors, (1753), 1192 states have internal predecessors, (1753), 221 states have call successors, (221), 72 states have call predecessors, (221), 72 states have return successors, (221), 215 states have call predecessors, (221), 221 states have call successors, (221) 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) [2022-01-31 22:25:26,454 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:25:27,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:25:27,217 INFO L93 Difference]: Finished difference Result 1399 states and 2144 transitions. [2022-01-31 22:25:27,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-31 22:25:27,219 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 [2022-01-31 22:25:27,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:25:27,231 INFO L225 Difference]: With dead ends: 1399 [2022-01-31 22:25:27,231 INFO L226 Difference]: Without dead ends: 833 [2022-01-31 22:25:27,236 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 [2022-01-31 22:25:27,238 INFO L933 BasicCegarLoop]: 728 mSDtfsCounter, 1822 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 2436 mSolverCounterSat, 917 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1850 SdHoareTripleChecker+Valid, 1207 SdHoareTripleChecker+Invalid, 3354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 917 IncrementalHoareTripleChecker+Valid, 2436 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-01-31 22:25:27,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1850 Valid, 1207 Invalid, 3354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [917 Valid, 2436 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2022-01-31 22:25:27,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2022-01-31 22:25:27,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 651. [2022-01-31 22:25:27,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 491 states have (on average 1.4256619144602851) internal successors, (700), 523 states have internal predecessors, (700), 115 states have call successors, (115), 46 states have call predecessors, (115), 44 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-01-31 22:25:27,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 906 transitions. [2022-01-31 22:25:27,395 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 906 transitions. Word has length 37 [2022-01-31 22:25:27,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:25:27,395 INFO L470 AbstractCegarLoop]: Abstraction has 651 states and 906 transitions. [2022-01-31 22:25:27,395 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) [2022-01-31 22:25:27,395 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 906 transitions. [2022-01-31 22:25:27,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-31 22:25:27,396 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:25:27,397 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] [2022-01-31 22:25:27,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 22:25:27,397 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:25:27,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:25:27,397 INFO L85 PathProgramCache]: Analyzing trace with hash -2031942295, now seen corresponding path program 1 times [2022-01-31 22:25:27,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:25:27,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1481322607] [2022-01-31 22:25:27,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:25:27,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:25:27,408 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:25:27,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:25:27,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:25:27,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:25:27,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:25:27,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:25:27,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:25:27,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:25:27,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 22:25:27,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:25:27,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:25:27,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:25:27,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-31 22:25:27,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:25:27,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:25:27,835 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:25:27,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1481322607] [2022-01-31 22:25:27,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1481322607] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:25:27,835 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:25:27,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-31 22:25:27,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776371508] [2022-01-31 22:25:27,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:25:27,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 22:25:27,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:25:27,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 22:25:27,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-01-31 22:25:27,837 INFO L87 Difference]: Start difference. First operand 651 states and 906 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) [2022-01-31 22:25:33,773 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 [] [2022-01-31 22:25:37,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:25:37,554 INFO L93 Difference]: Finished difference Result 1886 states and 2773 transitions. [2022-01-31 22:25:37,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-31 22:25:37,555 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 [2022-01-31 22:25:37,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:25:37,562 INFO L225 Difference]: With dead ends: 1886 [2022-01-31 22:25:37,563 INFO L226 Difference]: Without dead ends: 1423 [2022-01-31 22:25:37,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-01-31 22:25:37,565 INFO L933 BasicCegarLoop]: 923 mSDtfsCounter, 2981 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 3566 mSolverCounterSat, 1114 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3019 SdHoareTripleChecker+Valid, 1635 SdHoareTripleChecker+Invalid, 4681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1114 IncrementalHoareTripleChecker+Valid, 3566 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-01-31 22:25:37,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3019 Valid, 1635 Invalid, 4681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1114 Valid, 3566 Invalid, 1 Unknown, 0 Unchecked, 8.8s Time] [2022-01-31 22:25:37,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1423 states. [2022-01-31 22:25:37,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1423 to 1195. [2022-01-31 22:25:37,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 925 states have (on average 1.4086486486486487) internal successors, (1303), 956 states have internal predecessors, (1303), 177 states have call successors, (177), 79 states have call predecessors, (177), 92 states have return successors, (237), 169 states have call predecessors, (237), 161 states have call successors, (237) [2022-01-31 22:25:37,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1717 transitions. [2022-01-31 22:25:37,692 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1717 transitions. Word has length 42 [2022-01-31 22:25:37,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:25:37,693 INFO L470 AbstractCegarLoop]: Abstraction has 1195 states and 1717 transitions. [2022-01-31 22:25:37,693 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) [2022-01-31 22:25:37,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1717 transitions. [2022-01-31 22:25:37,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-31 22:25:37,695 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:25:37,695 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] [2022-01-31 22:25:37,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 22:25:37,695 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:25:37,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:25:37,695 INFO L85 PathProgramCache]: Analyzing trace with hash 2071284277, now seen corresponding path program 1 times [2022-01-31 22:25:37,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:25:37,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [802655092] [2022-01-31 22:25:37,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:25:37,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:25:37,705 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:25:37,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:25:37,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:25:37,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:25:37,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:25:37,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:25:38,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:25:38,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:25:38,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 22:25:38,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:25:38,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:25:38,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:25:38,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-31 22:25:38,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:25:38,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 22:25:38,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:25:38,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:25:38,121 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:25:38,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [802655092] [2022-01-31 22:25:38,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [802655092] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:25:38,121 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:25:38,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-31 22:25:38,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304372049] [2022-01-31 22:25:38,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:25:38,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 22:25:38,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:25:38,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 22:25:38,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-01-31 22:25:38,122 INFO L87 Difference]: Start difference. First operand 1195 states and 1717 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) [2022-01-31 22:25:42,300 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 [] [2022-01-31 22:25:46,485 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 [] [2022-01-31 22:25:49,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:25:49,563 INFO L93 Difference]: Finished difference Result 2202 states and 3286 transitions. [2022-01-31 22:25:49,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-31 22:25:49,563 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 [2022-01-31 22:25:49,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:25:49,576 INFO L225 Difference]: With dead ends: 2202 [2022-01-31 22:25:49,576 INFO L226 Difference]: Without dead ends: 2184 [2022-01-31 22:25:49,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2022-01-31 22:25:49,578 INFO L933 BasicCegarLoop]: 721 mSDtfsCounter, 2919 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 3427 mSolverCounterSat, 988 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2975 SdHoareTripleChecker+Valid, 1373 SdHoareTripleChecker+Invalid, 4417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 988 IncrementalHoareTripleChecker+Valid, 3427 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:25:49,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2975 Valid, 1373 Invalid, 4417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [988 Valid, 3427 Invalid, 2 Unknown, 0 Unchecked, 10.2s Time] [2022-01-31 22:25:49,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2184 states. [2022-01-31 22:25:49,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2184 to 1838. [2022-01-31 22:25:49,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1838 states, 1435 states have (on average 1.427177700348432) internal successors, (2048), 1486 states have internal predecessors, (2048), 261 states have call successors, (261), 121 states have call predecessors, (261), 141 states have return successors, (375), 244 states have call predecessors, (375), 245 states have call successors, (375) [2022-01-31 22:25:49,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1838 states to 1838 states and 2684 transitions. [2022-01-31 22:25:49,796 INFO L78 Accepts]: Start accepts. Automaton has 1838 states and 2684 transitions. Word has length 54 [2022-01-31 22:25:49,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:25:49,797 INFO L470 AbstractCegarLoop]: Abstraction has 1838 states and 2684 transitions. [2022-01-31 22:25:49,797 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) [2022-01-31 22:25:49,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1838 states and 2684 transitions. [2022-01-31 22:25:49,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-31 22:25:49,799 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:25:49,799 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] [2022-01-31 22:25:49,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-31 22:25:49,799 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:25:49,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:25:49,799 INFO L85 PathProgramCache]: Analyzing trace with hash 546834136, now seen corresponding path program 1 times [2022-01-31 22:25:49,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:25:49,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1031371099] [2022-01-31 22:25:49,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:25:49,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:25:49,818 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:25:49,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:25:50,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:25:50,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:25:50,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:25:50,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:25:50,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:25:50,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:25:50,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 22:25:50,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:25:50,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:25:50,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:25:50,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-31 22:25:50,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:25:50,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:25:50,236 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:25:50,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1031371099] [2022-01-31 22:25:50,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1031371099] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:25:50,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:25:50,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-31 22:25:50,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879755103] [2022-01-31 22:25:50,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:25:50,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 22:25:50,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:25:50,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 22:25:50,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-01-31 22:25:50,237 INFO L87 Difference]: Start difference. First operand 1838 states and 2684 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) [2022-01-31 22:25:54,770 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 [] [2022-01-31 22:25:59,300 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 [] [2022-01-31 22:26:04,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:26:04,696 INFO L93 Difference]: Finished difference Result 3657 states and 5559 transitions. [2022-01-31 22:26:04,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-31 22:26:04,696 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 [2022-01-31 22:26:04,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:26:04,711 INFO L225 Difference]: With dead ends: 3657 [2022-01-31 22:26:04,711 INFO L226 Difference]: Without dead ends: 3654 [2022-01-31 22:26:04,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-01-31 22:26:04,713 INFO L933 BasicCegarLoop]: 1115 mSDtfsCounter, 1550 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 5437 mSolverCounterSat, 587 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1590 SdHoareTripleChecker+Valid, 1868 SdHoareTripleChecker+Invalid, 6026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 587 IncrementalHoareTripleChecker+Valid, 5437 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:26:04,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1590 Valid, 1868 Invalid, 6026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [587 Valid, 5437 Invalid, 2 Unknown, 0 Unchecked, 13.2s Time] [2022-01-31 22:26:04,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3654 states. [2022-01-31 22:26:05,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3654 to 2949. [2022-01-31 22:26:05,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2949 states, 2337 states have (on average 1.4394522892597348) internal successors, (3364), 2396 states have internal predecessors, (3364), 382 states have call successors, (382), 202 states have call predecessors, (382), 229 states have return successors, (577), 364 states have call predecessors, (577), 366 states have call successors, (577) [2022-01-31 22:26:05,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2949 states to 2949 states and 4323 transitions. [2022-01-31 22:26:05,112 INFO L78 Accepts]: Start accepts. Automaton has 2949 states and 4323 transitions. Word has length 55 [2022-01-31 22:26:05,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:26:05,112 INFO L470 AbstractCegarLoop]: Abstraction has 2949 states and 4323 transitions. [2022-01-31 22:26:05,112 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) [2022-01-31 22:26:05,112 INFO L276 IsEmpty]: Start isEmpty. Operand 2949 states and 4323 transitions. [2022-01-31 22:26:05,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-31 22:26:05,114 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:26:05,114 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] [2022-01-31 22:26:05,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-31 22:26:05,114 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:26:05,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:26:05,115 INFO L85 PathProgramCache]: Analyzing trace with hash -893598350, now seen corresponding path program 1 times [2022-01-31 22:26:05,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:26:05,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1794129660] [2022-01-31 22:26:05,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:26:05,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:26:05,127 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:26:05,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:05,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:26:05,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:05,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:26:05,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:05,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:26:05,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:05,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 22:26:05,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:05,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:26:05,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:05,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-31 22:26:05,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:05,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:26:05,600 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:26:05,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1794129660] [2022-01-31 22:26:05,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1794129660] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:26:05,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:26:05,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-31 22:26:05,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906009139] [2022-01-31 22:26:05,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:26:05,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 22:26:05,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:26:05,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 22:26:05,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-01-31 22:26:05,601 INFO L87 Difference]: Start difference. First operand 2949 states and 4323 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) [2022-01-31 22:26:09,941 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 [] [2022-01-31 22:26:12,063 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:26:16,189 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:26:17,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:26:17,734 INFO L93 Difference]: Finished difference Result 3468 states and 5241 transitions. [2022-01-31 22:26:17,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-31 22:26:17,734 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 [2022-01-31 22:26:17,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:26:17,747 INFO L225 Difference]: With dead ends: 3468 [2022-01-31 22:26:17,747 INFO L226 Difference]: Without dead ends: 3464 [2022-01-31 22:26:17,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-01-31 22:26:17,750 INFO L933 BasicCegarLoop]: 709 mSDtfsCounter, 1701 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 2839 mSolverCounterSat, 705 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1729 SdHoareTripleChecker+Valid, 1256 SdHoareTripleChecker+Invalid, 3547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 705 IncrementalHoareTripleChecker+Valid, 2839 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2022-01-31 22:26:17,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1729 Valid, 1256 Invalid, 3547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [705 Valid, 2839 Invalid, 3 Unknown, 0 Unchecked, 11.0s Time] [2022-01-31 22:26:17,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3464 states. [2022-01-31 22:26:18,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3464 to 2974. [2022-01-31 22:26:18,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2974 states, 2363 states have (on average 1.4401184934405418) internal successors, (3403), 2418 states have internal predecessors, (3403), 381 states have call successors, (381), 202 states have call predecessors, (381), 229 states have return successors, (575), 365 states have call predecessors, (575), 365 states have call successors, (575) [2022-01-31 22:26:18,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2974 states to 2974 states and 4359 transitions. [2022-01-31 22:26:18,166 INFO L78 Accepts]: Start accepts. Automaton has 2974 states and 4359 transitions. Word has length 55 [2022-01-31 22:26:18,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:26:18,167 INFO L470 AbstractCegarLoop]: Abstraction has 2974 states and 4359 transitions. [2022-01-31 22:26:18,167 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) [2022-01-31 22:26:18,167 INFO L276 IsEmpty]: Start isEmpty. Operand 2974 states and 4359 transitions. [2022-01-31 22:26:18,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-31 22:26:18,168 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:26:18,168 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] [2022-01-31 22:26:18,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-31 22:26:18,168 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:26:18,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:26:18,168 INFO L85 PathProgramCache]: Analyzing trace with hash 494864556, now seen corresponding path program 1 times [2022-01-31 22:26:18,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:26:18,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2080954249] [2022-01-31 22:26:18,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:26:18,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:26:18,178 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:26:18,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:18,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:26:18,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:18,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:26:18,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:18,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:26:18,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:18,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 22:26:18,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:18,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:26:18,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:18,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-31 22:26:18,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:18,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 22:26:18,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:18,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:26:18,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:18,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:26:18,648 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:26:18,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2080954249] [2022-01-31 22:26:18,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2080954249] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:26:18,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:26:18,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-31 22:26:18,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851100028] [2022-01-31 22:26:18,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:26:18,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-31 22:26:18,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:26:18,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-31 22:26:18,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-01-31 22:26:18,649 INFO L87 Difference]: Start difference. First operand 2974 states and 4359 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 5 states have internal predecessors, (38), 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) [2022-01-31 22:26:26,185 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:26:30,255 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:26:33,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:26:33,289 INFO L93 Difference]: Finished difference Result 4254 states and 6463 transitions. [2022-01-31 22:26:33,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-31 22:26:33,290 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 5 states have internal predecessors, (38), 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 56 [2022-01-31 22:26:33,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:26:33,304 INFO L225 Difference]: With dead ends: 4254 [2022-01-31 22:26:33,304 INFO L226 Difference]: Without dead ends: 4246 [2022-01-31 22:26:33,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=485, Invalid=1585, Unknown=0, NotChecked=0, Total=2070 [2022-01-31 22:26:33,307 INFO L933 BasicCegarLoop]: 1006 mSDtfsCounter, 3738 mSDsluCounter, 917 mSDsCounter, 0 mSdLazyCounter, 5014 mSolverCounterSat, 1788 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3788 SdHoareTripleChecker+Valid, 1923 SdHoareTripleChecker+Invalid, 6804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1788 IncrementalHoareTripleChecker+Valid, 5014 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2022-01-31 22:26:33,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3788 Valid, 1923 Invalid, 6804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1788 Valid, 5014 Invalid, 2 Unknown, 0 Unchecked, 12.0s Time] [2022-01-31 22:26:33,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4246 states. [2022-01-31 22:26:33,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4246 to 3598. [2022-01-31 22:26:33,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3598 states, 2861 states have (on average 1.4435512058720728) internal successors, (4130), 2928 states have internal predecessors, (4130), 458 states have call successors, (458), 238 states have call predecessors, (458), 278 states have return successors, (709), 449 states have call predecessors, (709), 442 states have call successors, (709) [2022-01-31 22:26:33,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3598 states to 3598 states and 5297 transitions. [2022-01-31 22:26:33,836 INFO L78 Accepts]: Start accepts. Automaton has 3598 states and 5297 transitions. Word has length 56 [2022-01-31 22:26:33,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:26:33,836 INFO L470 AbstractCegarLoop]: Abstraction has 3598 states and 5297 transitions. [2022-01-31 22:26:33,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 5 states have internal predecessors, (38), 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) [2022-01-31 22:26:33,836 INFO L276 IsEmpty]: Start isEmpty. Operand 3598 states and 5297 transitions. [2022-01-31 22:26:33,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-31 22:26:33,838 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:26:33,838 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] [2022-01-31 22:26:33,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-31 22:26:33,839 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:26:33,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:26:33,839 INFO L85 PathProgramCache]: Analyzing trace with hash -582745306, now seen corresponding path program 1 times [2022-01-31 22:26:33,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:26:33,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [265318252] [2022-01-31 22:26:33,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:26:33,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:26:33,849 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:26:33,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:34,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:26:34,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:34,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:26:34,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:34,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:26:34,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:34,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 22:26:34,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:34,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:26:34,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:34,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-31 22:26:34,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:34,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-31 22:26:34,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:34,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:26:34,307 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:26:34,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [265318252] [2022-01-31 22:26:34,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [265318252] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:26:34,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:26:34,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-31 22:26:34,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356027916] [2022-01-31 22:26:34,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:26:34,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 22:26:34,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:26:34,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 22:26:34,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-01-31 22:26:34,308 INFO L87 Difference]: Start difference. First operand 3598 states and 5297 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, (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) [2022-01-31 22:26:39,986 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:26:44,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:26:44,777 INFO L93 Difference]: Finished difference Result 11208 states and 17196 transitions. [2022-01-31 22:26:44,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-31 22:26:44,785 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, (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 57 [2022-01-31 22:26:44,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:26:44,815 INFO L225 Difference]: With dead ends: 11208 [2022-01-31 22:26:44,815 INFO L226 Difference]: Without dead ends: 7864 [2022-01-31 22:26:44,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-01-31 22:26:44,830 INFO L933 BasicCegarLoop]: 892 mSDtfsCounter, 2794 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 3280 mSolverCounterSat, 1031 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2867 SdHoareTripleChecker+Valid, 1563 SdHoareTripleChecker+Invalid, 4312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1031 IncrementalHoareTripleChecker+Valid, 3280 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-01-31 22:26:44,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2867 Valid, 1563 Invalid, 4312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1031 Valid, 3280 Invalid, 1 Unknown, 0 Unchecked, 8.3s Time] [2022-01-31 22:26:44,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7864 states. [2022-01-31 22:26:45,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7864 to 6946. [2022-01-31 22:26:45,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6946 states, 5542 states have (on average 1.453446409238542) internal successors, (8055), 5692 states have internal predecessors, (8055), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-01-31 22:26:45,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6946 states to 6946 states and 10479 transitions. [2022-01-31 22:26:45,930 INFO L78 Accepts]: Start accepts. Automaton has 6946 states and 10479 transitions. Word has length 57 [2022-01-31 22:26:45,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:26:45,930 INFO L470 AbstractCegarLoop]: Abstraction has 6946 states and 10479 transitions. [2022-01-31 22:26:45,930 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, (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) [2022-01-31 22:26:45,930 INFO L276 IsEmpty]: Start isEmpty. Operand 6946 states and 10479 transitions. [2022-01-31 22:26:45,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-31 22:26:45,931 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:26:45,931 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] [2022-01-31 22:26:45,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-31 22:26:45,931 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:26:45,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:26:45,932 INFO L85 PathProgramCache]: Analyzing trace with hash -466129244, now seen corresponding path program 1 times [2022-01-31 22:26:45,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:26:45,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1245241153] [2022-01-31 22:26:45,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:26:45,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:26:45,941 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:26:45,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:46,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:26:46,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:46,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:26:46,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:46,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:26:46,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:46,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 22:26:46,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:46,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:26:46,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:46,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-31 22:26:46,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:46,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:26:46,382 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:26:46,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1245241153] [2022-01-31 22:26:46,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1245241153] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:26:46,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:26:46,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-31 22:26:46,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226742339] [2022-01-31 22:26:46,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:26:46,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-31 22:26:46,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:26:46,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-31 22:26:46,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-01-31 22:26:46,383 INFO L87 Difference]: Start difference. First operand 6946 states and 10479 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) [2022-01-31 22:26:54,072 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:26:58,070 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 [] [2022-01-31 22:27:03,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:27:03,937 INFO L93 Difference]: Finished difference Result 14677 states and 22415 transitions. [2022-01-31 22:27:03,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-31 22:27:03,938 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 [2022-01-31 22:27:03,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:27:04,000 INFO L225 Difference]: With dead ends: 14677 [2022-01-31 22:27:04,001 INFO L226 Difference]: Without dead ends: 8095 [2022-01-31 22:27:04,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=453, Invalid=1439, Unknown=0, NotChecked=0, Total=1892 [2022-01-31 22:27:04,019 INFO L933 BasicCegarLoop]: 900 mSDtfsCounter, 4806 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 6240 mSolverCounterSat, 2013 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4851 SdHoareTripleChecker+Valid, 1828 SdHoareTripleChecker+Invalid, 8255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2013 IncrementalHoareTripleChecker+Valid, 6240 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2022-01-31 22:27:04,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4851 Valid, 1828 Invalid, 8255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2013 Valid, 6240 Invalid, 2 Unknown, 0 Unchecked, 14.0s Time] [2022-01-31 22:27:04,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8095 states. [2022-01-31 22:27:05,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8095 to 6937. [2022-01-31 22:27:05,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6937 states, 5533 states have (on average 1.452015181637448) internal successors, (8034), 5683 states have internal predecessors, (8034), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-01-31 22:27:05,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6937 states to 6937 states and 10458 transitions. [2022-01-31 22:27:05,180 INFO L78 Accepts]: Start accepts. Automaton has 6937 states and 10458 transitions. Word has length 56 [2022-01-31 22:27:05,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:27:05,181 INFO L470 AbstractCegarLoop]: Abstraction has 6937 states and 10458 transitions. [2022-01-31 22:27:05,181 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) [2022-01-31 22:27:05,181 INFO L276 IsEmpty]: Start isEmpty. Operand 6937 states and 10458 transitions. [2022-01-31 22:27:05,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-31 22:27:05,182 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:27:05,182 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] [2022-01-31 22:27:05,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-31 22:27:05,182 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:27:05,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:27:05,183 INFO L85 PathProgramCache]: Analyzing trace with hash 613167468, now seen corresponding path program 1 times [2022-01-31 22:27:05,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:27:05,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1411076684] [2022-01-31 22:27:05,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:27:05,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:27:05,192 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:27:05,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:05,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:27:05,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:05,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:27:05,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:05,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:27:05,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:05,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 22:27:05,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:05,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:27:05,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:05,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-31 22:27:05,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:05,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-31 22:27:05,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:05,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:27:05,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:05,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:27:05,646 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:27:05,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1411076684] [2022-01-31 22:27:05,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1411076684] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:27:05,646 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:27:05,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-31 22:27:05,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120979019] [2022-01-31 22:27:05,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:27:05,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-31 22:27:05,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:27:05,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-31 22:27:05,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-01-31 22:27:05,657 INFO L87 Difference]: Start difference. First operand 6937 states and 10458 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) [2022-01-31 22:27:10,968 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 [] [2022-01-31 22:27:14,955 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 [] [2022-01-31 22:27:20,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:27:20,542 INFO L93 Difference]: Finished difference Result 7820 states and 12070 transitions. [2022-01-31 22:27:20,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-31 22:27:20,543 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 [2022-01-31 22:27:20,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:27:20,568 INFO L225 Difference]: With dead ends: 7820 [2022-01-31 22:27:20,568 INFO L226 Difference]: Without dead ends: 7815 [2022-01-31 22:27:20,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=485, Invalid=1585, Unknown=0, NotChecked=0, Total=2070 [2022-01-31 22:27:20,572 INFO L933 BasicCegarLoop]: 987 mSDtfsCounter, 4369 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 4163 mSolverCounterSat, 2061 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4422 SdHoareTripleChecker+Valid, 1751 SdHoareTripleChecker+Invalid, 6226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2061 IncrementalHoareTripleChecker+Valid, 4163 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2022-01-31 22:27:20,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4422 Valid, 1751 Invalid, 6226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2061 Valid, 4163 Invalid, 2 Unknown, 0 Unchecked, 11.4s Time] [2022-01-31 22:27:20,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7815 states. [2022-01-31 22:27:21,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7815 to 6937. [2022-01-31 22:27:21,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6937 states, 5533 states have (on average 1.4518344478583047) internal successors, (8033), 5683 states have internal predecessors, (8033), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-01-31 22:27:21,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6937 states to 6937 states and 10457 transitions. [2022-01-31 22:27:21,757 INFO L78 Accepts]: Start accepts. Automaton has 6937 states and 10457 transitions. Word has length 58 [2022-01-31 22:27:21,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:27:21,757 INFO L470 AbstractCegarLoop]: Abstraction has 6937 states and 10457 transitions. [2022-01-31 22:27:21,757 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) [2022-01-31 22:27:21,757 INFO L276 IsEmpty]: Start isEmpty. Operand 6937 states and 10457 transitions. [2022-01-31 22:27:21,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-31 22:27:21,758 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:27:21,758 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] [2022-01-31 22:27:21,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-31 22:27:21,758 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:27:21,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:27:21,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1552244362, now seen corresponding path program 1 times [2022-01-31 22:27:21,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:27:21,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [230932782] [2022-01-31 22:27:21,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:27:21,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:27:21,769 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:27:21,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:21,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:27:21,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:22,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:27:22,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:22,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:27:22,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:22,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 22:27:22,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:22,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:27:22,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:22,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-31 22:27:22,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:22,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-31 22:27:22,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:22,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:27:22,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:22,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:27:22,207 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:27:22,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [230932782] [2022-01-31 22:27:22,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [230932782] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:27:22,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:27:22,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-31 22:27:22,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582097742] [2022-01-31 22:27:22,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:27:22,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-31 22:27:22,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:27:22,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-31 22:27:22,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-01-31 22:27:22,208 INFO L87 Difference]: Start difference. First operand 6937 states and 10457 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), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-31 22:27:28,720 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:27:32,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:27:32,248 INFO L93 Difference]: Finished difference Result 14740 states and 22518 transitions. [2022-01-31 22:27:32,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-31 22:27:32,249 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), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 59 [2022-01-31 22:27:32,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:27:32,272 INFO L225 Difference]: With dead ends: 14740 [2022-01-31 22:27:32,272 INFO L226 Difference]: Without dead ends: 7831 [2022-01-31 22:27:32,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2022-01-31 22:27:32,292 INFO L933 BasicCegarLoop]: 699 mSDtfsCounter, 1911 mSDsluCounter, 1114 mSDsCounter, 0 mSdLazyCounter, 4662 mSolverCounterSat, 822 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1943 SdHoareTripleChecker+Valid, 1813 SdHoareTripleChecker+Invalid, 5485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 822 IncrementalHoareTripleChecker+Valid, 4662 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-01-31 22:27:32,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1943 Valid, 1813 Invalid, 5485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [822 Valid, 4662 Invalid, 1 Unknown, 0 Unchecked, 7.8s Time] [2022-01-31 22:27:32,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7831 states. [2022-01-31 22:27:33,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7831 to 6937. [2022-01-31 22:27:33,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6937 states, 5533 states have (on average 1.4516537140791614) internal successors, (8032), 5683 states have internal predecessors, (8032), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-01-31 22:27:33,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6937 states to 6937 states and 10456 transitions. [2022-01-31 22:27:33,503 INFO L78 Accepts]: Start accepts. Automaton has 6937 states and 10456 transitions. Word has length 59 [2022-01-31 22:27:33,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:27:33,504 INFO L470 AbstractCegarLoop]: Abstraction has 6937 states and 10456 transitions. [2022-01-31 22:27:33,504 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), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-31 22:27:33,504 INFO L276 IsEmpty]: Start isEmpty. Operand 6937 states and 10456 transitions. [2022-01-31 22:27:33,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-31 22:27:33,505 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:27:33,505 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] [2022-01-31 22:27:33,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-31 22:27:33,505 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:27:33,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:27:33,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1006356351, now seen corresponding path program 1 times [2022-01-31 22:27:33,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:27:33,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [297523736] [2022-01-31 22:27:33,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:27:33,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:27:33,514 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:27:33,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:33,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:27:33,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:33,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:27:33,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:33,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:27:33,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:33,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 22:27:33,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:33,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:27:33,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:33,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-31 22:27:33,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:34,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 22:27:34,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:34,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:27:34,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:34,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:27:34,116 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:27:34,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [297523736] [2022-01-31 22:27:34,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [297523736] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:27:34,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:27:34,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-01-31 22:27:34,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003070982] [2022-01-31 22:27:34,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:27:34,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-31 22:27:34,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:27:34,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-31 22:27:34,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-01-31 22:27:34,117 INFO L87 Difference]: Start difference. First operand 6937 states and 10456 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 4 states have internal predecessors, (45), 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) [2022-01-31 22:27:40,829 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 [] [2022-01-31 22:27:44,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:27:44,386 INFO L93 Difference]: Finished difference Result 14697 states and 22709 transitions. [2022-01-31 22:27:44,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-31 22:27:44,386 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 4 states have internal predecessors, (45), 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 63 [2022-01-31 22:27:44,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:27:44,411 INFO L225 Difference]: With dead ends: 14697 [2022-01-31 22:27:44,411 INFO L226 Difference]: Without dead ends: 7729 [2022-01-31 22:27:44,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2022-01-31 22:27:44,438 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 1902 mSDsluCounter, 946 mSDsCounter, 0 mSdLazyCounter, 3885 mSolverCounterSat, 809 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1932 SdHoareTripleChecker+Valid, 1646 SdHoareTripleChecker+Invalid, 4695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 809 IncrementalHoareTripleChecker+Valid, 3885 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-01-31 22:27:44,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1932 Valid, 1646 Invalid, 4695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [809 Valid, 3885 Invalid, 1 Unknown, 0 Unchecked, 7.8s Time] [2022-01-31 22:27:44,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7729 states. [2022-01-31 22:27:45,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7729 to 6958. [2022-01-31 22:27:45,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6958 states, 5554 states have (on average 1.4499459848757652) internal successors, (8053), 5704 states have internal predecessors, (8053), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-01-31 22:27:45,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6958 states to 6958 states and 10477 transitions. [2022-01-31 22:27:45,699 INFO L78 Accepts]: Start accepts. Automaton has 6958 states and 10477 transitions. Word has length 63 [2022-01-31 22:27:45,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:27:45,700 INFO L470 AbstractCegarLoop]: Abstraction has 6958 states and 10477 transitions. [2022-01-31 22:27:45,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 4 states have internal predecessors, (45), 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) [2022-01-31 22:27:45,700 INFO L276 IsEmpty]: Start isEmpty. Operand 6958 states and 10477 transitions. [2022-01-31 22:27:45,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-31 22:27:45,701 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:27:45,701 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] [2022-01-31 22:27:45,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-31 22:27:45,701 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:27:45,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:27:45,701 INFO L85 PathProgramCache]: Analyzing trace with hash -427353988, now seen corresponding path program 1 times [2022-01-31 22:27:45,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:27:45,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [774565168] [2022-01-31 22:27:45,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:27:45,713 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:27:45,713 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 22:27:45,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:27:45,722 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:27:45,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:45,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:27:45,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:46,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:27:46,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:46,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-01-31 22:27:46,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:46,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 22:27:46,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:46,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:27:46,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:46,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-31 22:27:46,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:46,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 22:27:46,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:46,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:27:46,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:46,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:27:46,364 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:27:46,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [774565168] [2022-01-31 22:27:46,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [774565168] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:27:46,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:27:46,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-31 22:27:46,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939159420] [2022-01-31 22:27:46,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:27:46,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-31 22:27:46,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:27:46,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-31 22:27:46,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-01-31 22:27:46,365 INFO L87 Difference]: Start difference. First operand 6958 states and 10477 transitions. Second operand has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 5 states have internal predecessors, (45), 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) [2022-01-31 22:27:54,590 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 [] [2022-01-31 22:27:58,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:27:58,706 INFO L93 Difference]: Finished difference Result 14738 states and 22750 transitions. [2022-01-31 22:27:58,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-31 22:27:58,707 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 5 states have internal predecessors, (45), 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 63 [2022-01-31 22:27:58,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:27:58,728 INFO L225 Difference]: With dead ends: 14738 [2022-01-31 22:27:58,728 INFO L226 Difference]: Without dead ends: 7750 [2022-01-31 22:27:58,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=135, Invalid=371, Unknown=0, NotChecked=0, Total=506 [2022-01-31 22:27:58,747 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 2018 mSDsluCounter, 1059 mSDsCounter, 0 mSdLazyCounter, 4849 mSolverCounterSat, 862 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2048 SdHoareTripleChecker+Valid, 1759 SdHoareTripleChecker+Invalid, 5712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 862 IncrementalHoareTripleChecker+Valid, 4849 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-01-31 22:27:58,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2048 Valid, 1759 Invalid, 5712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [862 Valid, 4849 Invalid, 1 Unknown, 0 Unchecked, 9.7s Time] [2022-01-31 22:27:58,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7750 states. [2022-01-31 22:28:00,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7750 to 6979. [2022-01-31 22:28:00,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6979 states, 5575 states have (on average 1.4482511210762332) internal successors, (8074), 5725 states have internal predecessors, (8074), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-01-31 22:28:00,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6979 states to 6979 states and 10498 transitions. [2022-01-31 22:28:00,049 INFO L78 Accepts]: Start accepts. Automaton has 6979 states and 10498 transitions. Word has length 63 [2022-01-31 22:28:00,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:28:00,049 INFO L470 AbstractCegarLoop]: Abstraction has 6979 states and 10498 transitions. [2022-01-31 22:28:00,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 5 states have internal predecessors, (45), 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) [2022-01-31 22:28:00,049 INFO L276 IsEmpty]: Start isEmpty. Operand 6979 states and 10498 transitions. [2022-01-31 22:28:00,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-31 22:28:00,050 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:28:00,050 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:28:00,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-31 22:28:00,050 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:28:00,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:28:00,051 INFO L85 PathProgramCache]: Analyzing trace with hash 2076762092, now seen corresponding path program 2 times [2022-01-31 22:28:00,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:28:00,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2131300691] [2022-01-31 22:28:00,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:28:00,052 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:28:00,052 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 22:28:00,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:28:00,061 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:28:00,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:00,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:28:00,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:00,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:28:00,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:00,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-01-31 22:28:00,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:00,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-01-31 22:28:00,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:00,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:28:00,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:00,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 22:28:00,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:00,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-31 22:28:00,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:00,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:28:00,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:00,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:28:00,654 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:28:00,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2131300691] [2022-01-31 22:28:00,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2131300691] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:28:00,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:28:00,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-31 22:28:00,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169344955] [2022-01-31 22:28:00,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:28:00,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-31 22:28:00,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:28:00,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-31 22:28:00,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-01-31 22:28:00,655 INFO L87 Difference]: Start difference. First operand 6979 states and 10498 transitions. Second operand has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 6 states have internal predecessors, (46), 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) [2022-01-31 22:28:06,919 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:28:12,143 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:28:16,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:28:16,541 INFO L93 Difference]: Finished difference Result 14779 states and 22791 transitions. [2022-01-31 22:28:16,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-31 22:28:16,541 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 6 states have internal predecessors, (46), 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 64 [2022-01-31 22:28:16,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:28:16,563 INFO L225 Difference]: With dead ends: 14779 [2022-01-31 22:28:16,564 INFO L226 Difference]: Without dead ends: 7771 [2022-01-31 22:28:16,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2022-01-31 22:28:16,586 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 2018 mSDsluCounter, 1243 mSDsCounter, 0 mSdLazyCounter, 5608 mSolverCounterSat, 864 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2048 SdHoareTripleChecker+Valid, 1943 SdHoareTripleChecker+Invalid, 6474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 864 IncrementalHoareTripleChecker+Valid, 5608 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:28:16,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2048 Valid, 1943 Invalid, 6474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [864 Valid, 5608 Invalid, 2 Unknown, 0 Unchecked, 13.2s Time] [2022-01-31 22:28:16,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7771 states. [2022-01-31 22:28:17,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7771 to 7000. [2022-01-31 22:28:17,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7000 states, 5596 states have (on average 1.4465689778413153) internal successors, (8095), 5746 states have internal predecessors, (8095), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-01-31 22:28:17,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7000 states to 7000 states and 10519 transitions. [2022-01-31 22:28:17,882 INFO L78 Accepts]: Start accepts. Automaton has 7000 states and 10519 transitions. Word has length 64 [2022-01-31 22:28:17,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:28:17,882 INFO L470 AbstractCegarLoop]: Abstraction has 7000 states and 10519 transitions. [2022-01-31 22:28:17,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 6 states have internal predecessors, (46), 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) [2022-01-31 22:28:17,882 INFO L276 IsEmpty]: Start isEmpty. Operand 7000 states and 10519 transitions. [2022-01-31 22:28:17,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-31 22:28:17,883 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:28:17,883 INFO L514 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:28:17,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-31 22:28:17,884 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:28:17,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:28:17,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1900018052, now seen corresponding path program 3 times [2022-01-31 22:28:17,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:28:17,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1384217266] [2022-01-31 22:28:17,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:28:17,885 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:28:17,885 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 22:28:17,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:28:17,901 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:28:17,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:18,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:28:18,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:18,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:28:18,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:18,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 22:28:18,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:18,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 22:28:18,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:18,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:28:18,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:18,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-31 22:28:18,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:18,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-31 22:28:18,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:18,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:28:18,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:18,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:28:18,592 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:28:18,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1384217266] [2022-01-31 22:28:18,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1384217266] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:28:18,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:28:18,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-01-31 22:28:18,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127689900] [2022-01-31 22:28:18,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:28:18,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-31 22:28:18,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:28:18,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-31 22:28:18,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-01-31 22:28:18,593 INFO L87 Difference]: Start difference. First operand 7000 states and 10519 transitions. Second operand has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 7 states have internal predecessors, (47), 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) [2022-01-31 22:28:25,187 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:28:30,399 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:28:35,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:28:35,419 INFO L93 Difference]: Finished difference Result 14820 states and 22832 transitions. [2022-01-31 22:28:35,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-31 22:28:35,421 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 7 states have internal predecessors, (47), 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 65 [2022-01-31 22:28:35,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:28:35,446 INFO L225 Difference]: With dead ends: 14820 [2022-01-31 22:28:35,446 INFO L226 Difference]: Without dead ends: 7792 [2022-01-31 22:28:35,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=163, Invalid=539, Unknown=0, NotChecked=0, Total=702 [2022-01-31 22:28:35,467 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 2013 mSDsluCounter, 1427 mSDsCounter, 0 mSdLazyCounter, 6391 mSolverCounterSat, 868 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2043 SdHoareTripleChecker+Valid, 2127 SdHoareTripleChecker+Invalid, 7261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 868 IncrementalHoareTripleChecker+Valid, 6391 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2022-01-31 22:28:35,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2043 Valid, 2127 Invalid, 7261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [868 Valid, 6391 Invalid, 2 Unknown, 0 Unchecked, 14.0s Time] [2022-01-31 22:28:35,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7792 states. [2022-01-31 22:28:36,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7792 to 7021. [2022-01-31 22:28:36,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7021 states, 5617 states have (on average 1.4448994124977745) internal successors, (8116), 5767 states have internal predecessors, (8116), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-01-31 22:28:36,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7021 states to 7021 states and 10540 transitions. [2022-01-31 22:28:36,874 INFO L78 Accepts]: Start accepts. Automaton has 7021 states and 10540 transitions. Word has length 65 [2022-01-31 22:28:36,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:28:36,874 INFO L470 AbstractCegarLoop]: Abstraction has 7021 states and 10540 transitions. [2022-01-31 22:28:36,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 7 states have internal predecessors, (47), 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) [2022-01-31 22:28:36,875 INFO L276 IsEmpty]: Start isEmpty. Operand 7021 states and 10540 transitions. [2022-01-31 22:28:36,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-31 22:28:36,876 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:28:36,876 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:28:36,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-31 22:28:36,877 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:28:36,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:28:36,877 INFO L85 PathProgramCache]: Analyzing trace with hash -369978239, now seen corresponding path program 1 times [2022-01-31 22:28:36,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:28:36,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [532706655] [2022-01-31 22:28:36,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:28:36,878 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:28:36,878 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 22:28:36,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:28:36,888 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:28:36,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:37,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:28:37,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:37,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:28:37,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:37,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 22:28:37,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:37,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 22:28:37,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:37,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:28:37,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:37,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-01-31 22:28:37,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:37,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 22:28:37,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:37,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:28:37,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:37,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:28:37,604 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:28:37,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [532706655] [2022-01-31 22:28:37,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [532706655] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:28:37,604 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:28:37,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-31 22:28:37,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377568761] [2022-01-31 22:28:37,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:28:37,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-31 22:28:37,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:28:37,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-31 22:28:37,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-01-31 22:28:37,605 INFO L87 Difference]: Start difference. First operand 7021 states and 10540 transitions. Second operand has 16 states, 16 states have (on average 3.0625) internal successors, (49), 8 states have internal predecessors, (49), 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) [2022-01-31 22:28:49,408 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 [] [2022-01-31 22:28:54,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:28:54,967 INFO L93 Difference]: Finished difference Result 14861 states and 22873 transitions. [2022-01-31 22:28:54,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-31 22:28:54,968 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 8 states have internal predecessors, (49), 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 67 [2022-01-31 22:28:54,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:28:54,997 INFO L225 Difference]: With dead ends: 14861 [2022-01-31 22:28:54,997 INFO L226 Difference]: Without dead ends: 7813 [2022-01-31 22:28:55,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=177, Invalid=635, Unknown=0, NotChecked=0, Total=812 [2022-01-31 22:28:55,023 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 2066 mSDsluCounter, 1601 mSDsCounter, 0 mSdLazyCounter, 6810 mSolverCounterSat, 832 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2096 SdHoareTripleChecker+Valid, 2301 SdHoareTripleChecker+Invalid, 7643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 832 IncrementalHoareTripleChecker+Valid, 6810 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2022-01-31 22:28:55,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2096 Valid, 2301 Invalid, 7643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [832 Valid, 6810 Invalid, 1 Unknown, 0 Unchecked, 14.3s Time] [2022-01-31 22:28:55,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7813 states. [2022-01-31 22:28:56,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7813 to 7042. [2022-01-31 22:28:56,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7042 states, 5638 states have (on average 1.443242284498049) internal successors, (8137), 5788 states have internal predecessors, (8137), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-01-31 22:28:56,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7042 states to 7042 states and 10561 transitions. [2022-01-31 22:28:56,483 INFO L78 Accepts]: Start accepts. Automaton has 7042 states and 10561 transitions. Word has length 67 [2022-01-31 22:28:56,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:28:56,483 INFO L470 AbstractCegarLoop]: Abstraction has 7042 states and 10561 transitions. [2022-01-31 22:28:56,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 8 states have internal predecessors, (49), 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) [2022-01-31 22:28:56,483 INFO L276 IsEmpty]: Start isEmpty. Operand 7042 states and 10561 transitions. [2022-01-31 22:28:56,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-31 22:28:56,484 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:28:56,484 INFO L514 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:28:56,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-31 22:28:56,485 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:28:56,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:28:56,485 INFO L85 PathProgramCache]: Analyzing trace with hash -249355279, now seen corresponding path program 2 times [2022-01-31 22:28:56,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:28:56,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289049441] [2022-01-31 22:28:56,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:28:56,486 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:28:56,486 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 22:28:56,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:28:56,497 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:28:56,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:56,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:28:56,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:56,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:28:56,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:57,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 22:28:57,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:57,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-31 22:28:57,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:57,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:28:57,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:57,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-01-31 22:28:57,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:57,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-31 22:28:57,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:57,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:28:57,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:57,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:28:57,364 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:28:57,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [289049441] [2022-01-31 22:28:57,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [289049441] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:28:57,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:28:57,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-01-31 22:28:57,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156506124] [2022-01-31 22:28:57,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:28:57,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-31 22:28:57,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:28:57,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-31 22:28:57,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2022-01-31 22:28:57,365 INFO L87 Difference]: Start difference. First operand 7042 states and 10561 transitions. Second operand has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 9 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), 2 states have call successors, (8) [2022-01-31 22:29:04,638 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 [] [2022-01-31 22:29:06,797 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:29:08,946 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:29:11,069 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:29:13,189 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:29:15,309 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:29:20,279 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:29:24,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:29:24,924 INFO L93 Difference]: Finished difference Result 14902 states and 22914 transitions. [2022-01-31 22:29:24,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-31 22:29:24,924 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 9 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), 2 states have call successors, (8) Word has length 68 [2022-01-31 22:29:24,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:29:24,947 INFO L225 Difference]: With dead ends: 14902 [2022-01-31 22:29:24,947 INFO L226 Difference]: Without dead ends: 7834 [2022-01-31 22:29:24,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=191, Invalid=739, Unknown=0, NotChecked=0, Total=930 [2022-01-31 22:29:24,968 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 2640 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 5601 mSolverCounterSat, 1169 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2670 SdHoareTripleChecker+Valid, 2175 SdHoareTripleChecker+Invalid, 6777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1169 IncrementalHoareTripleChecker+Valid, 5601 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.4s IncrementalHoareTripleChecker+Time [2022-01-31 22:29:24,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2670 Valid, 2175 Invalid, 6777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1169 Valid, 5601 Invalid, 7 Unknown, 0 Unchecked, 24.4s Time] [2022-01-31 22:29:24,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7834 states. [2022-01-31 22:29:26,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7834 to 7063. [2022-01-31 22:29:26,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7063 states, 5659 states have (on average 1.4415974553808093) internal successors, (8158), 5809 states have internal predecessors, (8158), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-01-31 22:29:26,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7063 states to 7063 states and 10582 transitions. [2022-01-31 22:29:26,459 INFO L78 Accepts]: Start accepts. Automaton has 7063 states and 10582 transitions. Word has length 68 [2022-01-31 22:29:26,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:29:26,460 INFO L470 AbstractCegarLoop]: Abstraction has 7063 states and 10582 transitions. [2022-01-31 22:29:26,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 9 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), 2 states have call successors, (8) [2022-01-31 22:29:26,460 INFO L276 IsEmpty]: Start isEmpty. Operand 7063 states and 10582 transitions. [2022-01-31 22:29:26,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-31 22:29:26,461 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:29:26,461 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:29:26,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-31 22:29:26,461 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:29:26,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:29:26,461 INFO L85 PathProgramCache]: Analyzing trace with hash 329647084, now seen corresponding path program 4 times [2022-01-31 22:29:26,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:29:26,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1680614324] [2022-01-31 22:29:26,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:29:26,462 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:29:26,462 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 22:29:26,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:29:26,471 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:29:26,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:29:26,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:29:26,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:29:26,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:29:26,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:29:27,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-01-31 22:29:27,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:29:27,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-31 22:29:27,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:29:27,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:29:27,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:29:27,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 22:29:27,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:29:27,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-31 22:29:27,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:29:27,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:29:27,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:29:27,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:29:27,290 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:29:27,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1680614324] [2022-01-31 22:29:27,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1680614324] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:29:27,290 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:29:27,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-31 22:29:27,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959919100] [2022-01-31 22:29:27,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:29:27,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-31 22:29:27,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:29:27,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-31 22:29:27,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2022-01-31 22:29:27,291 INFO L87 Difference]: Start difference. First operand 7063 states and 10582 transitions. Second operand has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 10 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), 2 states have call successors, (8) [2022-01-31 22:29:34,952 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:29:37,081 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:29:39,234 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:29:45,169 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:29:51,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:29:51,147 INFO L93 Difference]: Finished difference Result 14943 states and 22955 transitions. [2022-01-31 22:29:51,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-31 22:29:51,148 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 10 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), 2 states have call successors, (8) Word has length 68 [2022-01-31 22:29:51,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:29:51,214 INFO L225 Difference]: With dead ends: 14943 [2022-01-31 22:29:51,215 INFO L226 Difference]: Without dead ends: 7855 [2022-01-31 22:29:51,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=205, Invalid=851, Unknown=0, NotChecked=0, Total=1056 [2022-01-31 22:29:51,231 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 2325 mSDsluCounter, 1746 mSDsCounter, 0 mSdLazyCounter, 7160 mSolverCounterSat, 1041 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2355 SdHoareTripleChecker+Valid, 2446 SdHoareTripleChecker+Invalid, 8205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1041 IncrementalHoareTripleChecker+Valid, 7160 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.5s IncrementalHoareTripleChecker+Time [2022-01-31 22:29:51,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2355 Valid, 2446 Invalid, 8205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1041 Valid, 7160 Invalid, 4 Unknown, 0 Unchecked, 20.5s Time] [2022-01-31 22:29:51,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7855 states. [2022-01-31 22:29:52,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7855 to 7084. [2022-01-31 22:29:52,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7084 states, 5680 states have (on average 1.4399647887323943) internal successors, (8179), 5830 states have internal predecessors, (8179), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-01-31 22:29:52,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7084 states to 7084 states and 10603 transitions. [2022-01-31 22:29:52,707 INFO L78 Accepts]: Start accepts. Automaton has 7084 states and 10603 transitions. Word has length 68 [2022-01-31 22:29:52,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:29:52,707 INFO L470 AbstractCegarLoop]: Abstraction has 7084 states and 10603 transitions. [2022-01-31 22:29:52,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 10 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), 2 states have call successors, (8) [2022-01-31 22:29:52,707 INFO L276 IsEmpty]: Start isEmpty. Operand 7084 states and 10603 transitions. [2022-01-31 22:29:52,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-31 22:29:52,708 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:29:52,708 INFO L514 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:29:52,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-31 22:29:52,708 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:29:52,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:29:52,708 INFO L85 PathProgramCache]: Analyzing trace with hash -850463247, now seen corresponding path program 3 times [2022-01-31 22:29:52,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:29:52,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [911550676] [2022-01-31 22:29:52,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:29:52,709 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:29:52,709 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 22:29:52,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:29:52,719 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:29:52,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:29:52,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:29:52,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:29:52,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:29:52,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:29:53,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 22:29:53,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:29:53,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 22:29:53,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:29:53,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:29:53,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:29:53,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 22:29:53,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:29:53,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 22:29:53,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:29:53,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:29:53,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:29:53,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:29:53,822 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:29:53,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [911550676] [2022-01-31 22:29:53,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [911550676] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:29:53,822 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:29:53,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-31 22:29:53,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368489937] [2022-01-31 22:29:53,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:29:53,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-31 22:29:53,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:29:53,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-31 22:29:53,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2022-01-31 22:29:53,823 INFO L87 Difference]: Start difference. First operand 7084 states and 10603 transitions. Second operand has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 11 states have internal predecessors, (52), 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) [2022-01-31 22:30:00,621 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:30:02,768 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:30:07,455 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 [] [2022-01-31 22:30:12,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:30:12,321 INFO L93 Difference]: Finished difference Result 14984 states and 22996 transitions. [2022-01-31 22:30:12,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-31 22:30:12,321 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 11 states have internal predecessors, (52), 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 70 [2022-01-31 22:30:12,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:30:12,350 INFO L225 Difference]: With dead ends: 14984 [2022-01-31 22:30:12,350 INFO L226 Difference]: Without dead ends: 7876 [2022-01-31 22:30:12,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=219, Invalid=971, Unknown=0, NotChecked=0, Total=1190 [2022-01-31 22:30:12,373 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 2366 mSDsluCounter, 1107 mSDsCounter, 0 mSdLazyCounter, 4322 mSolverCounterSat, 1033 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2396 SdHoareTripleChecker+Valid, 1807 SdHoareTripleChecker+Invalid, 5358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1033 IncrementalHoareTripleChecker+Valid, 4322 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.8s IncrementalHoareTripleChecker+Time [2022-01-31 22:30:12,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2396 Valid, 1807 Invalid, 5358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1033 Valid, 4322 Invalid, 3 Unknown, 0 Unchecked, 14.8s Time] [2022-01-31 22:30:12,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7876 states. [2022-01-31 22:30:13,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7876 to 7105. [2022-01-31 22:30:13,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7105 states, 5701 states have (on average 1.4383441501490966) internal successors, (8200), 5851 states have internal predecessors, (8200), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-01-31 22:30:13,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7105 states to 7105 states and 10624 transitions. [2022-01-31 22:30:13,903 INFO L78 Accepts]: Start accepts. Automaton has 7105 states and 10624 transitions. Word has length 70 [2022-01-31 22:30:13,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:30:13,904 INFO L470 AbstractCegarLoop]: Abstraction has 7105 states and 10624 transitions. [2022-01-31 22:30:13,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 11 states have internal predecessors, (52), 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) [2022-01-31 22:30:13,904 INFO L276 IsEmpty]: Start isEmpty. Operand 7105 states and 10624 transitions. [2022-01-31 22:30:13,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-31 22:30:13,905 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:30:13,905 INFO L514 BasicCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:30:13,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-31 22:30:13,905 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:30:13,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:30:13,905 INFO L85 PathProgramCache]: Analyzing trace with hash 2035478657, now seen corresponding path program 4 times [2022-01-31 22:30:13,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:30:13,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [430066320] [2022-01-31 22:30:13,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:30:13,906 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:30:13,906 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 22:30:13,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:30:13,915 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:30:14,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:30:14,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:30:14,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:30:14,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:30:14,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:30:14,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 22:30:14,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:30:14,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-01-31 22:30:14,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:30:14,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:30:14,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:30:14,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-31 22:30:14,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:30:14,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-01-31 22:30:14,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:30:15,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:30:15,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:30:15,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:30:15,047 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:30:15,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [430066320] [2022-01-31 22:30:15,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [430066320] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:30:15,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:30:15,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-31 22:30:15,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609732469] [2022-01-31 22:30:15,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:30:15,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-31 22:30:15,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:30:15,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-31 22:30:15,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2022-01-31 22:30:15,048 INFO L87 Difference]: Start difference. First operand 7105 states and 10624 transitions. Second operand has 20 states, 20 states have (on average 2.65) internal successors, (53), 12 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), 2 states have call successors, (8) [2022-01-31 22:30:27,176 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 [] [2022-01-31 22:30:34,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:30:34,211 INFO L93 Difference]: Finished difference Result 15025 states and 23037 transitions. [2022-01-31 22:30:34,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-31 22:30:34,212 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.65) internal successors, (53), 12 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), 2 states have call successors, (8) Word has length 71 [2022-01-31 22:30:34,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:30:34,240 INFO L225 Difference]: With dead ends: 15025 [2022-01-31 22:30:34,241 INFO L226 Difference]: Without dead ends: 7897 [2022-01-31 22:30:34,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=233, Invalid=1099, Unknown=0, NotChecked=0, Total=1332 [2022-01-31 22:30:34,264 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 2054 mSDsluCounter, 1843 mSDsCounter, 0 mSdLazyCounter, 7546 mSolverCounterSat, 921 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2084 SdHoareTripleChecker+Valid, 2543 SdHoareTripleChecker+Invalid, 8468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 921 IncrementalHoareTripleChecker+Valid, 7546 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.3s IncrementalHoareTripleChecker+Time [2022-01-31 22:30:34,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2084 Valid, 2543 Invalid, 8468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [921 Valid, 7546 Invalid, 1 Unknown, 0 Unchecked, 15.3s Time] [2022-01-31 22:30:34,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7897 states. [2022-01-31 22:30:35,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7897 to 7126. [2022-01-31 22:30:35,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7126 states, 5722 states have (on average 1.4367354072002796) internal successors, (8221), 5872 states have internal predecessors, (8221), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-01-31 22:30:35,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7126 states to 7126 states and 10645 transitions. [2022-01-31 22:30:35,886 INFO L78 Accepts]: Start accepts. Automaton has 7126 states and 10645 transitions. Word has length 71 [2022-01-31 22:30:35,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:30:35,886 INFO L470 AbstractCegarLoop]: Abstraction has 7126 states and 10645 transitions. [2022-01-31 22:30:35,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.65) internal successors, (53), 12 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), 2 states have call successors, (8) [2022-01-31 22:30:35,886 INFO L276 IsEmpty]: Start isEmpty. Operand 7126 states and 10645 transitions. [2022-01-31 22:30:35,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-31 22:30:35,887 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:30:35,887 INFO L514 BasicCegarLoop]: trace histogram [9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:30:35,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-31 22:30:35,887 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:30:35,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:30:35,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1305364465, now seen corresponding path program 5 times [2022-01-31 22:30:35,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:30:35,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1641356409] [2022-01-31 22:30:35,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:30:35,888 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:30:35,888 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 22:30:35,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:30:35,898 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:30:35,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:30:36,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:30:36,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:30:36,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:30:36,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:30:36,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-31 22:30:36,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:30:36,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-01-31 22:30:36,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:30:37,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:30:37,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:30:37,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-31 22:30:37,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:30:37,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-31 22:30:37,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:30:37,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:30:37,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:30:37,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:30:37,200 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:30:37,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1641356409] [2022-01-31 22:30:37,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1641356409] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:30:37,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:30:37,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-31 22:30:37,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188314965] [2022-01-31 22:30:37,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:30:37,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-31 22:30:37,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:30:37,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-31 22:30:37,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2022-01-31 22:30:37,211 INFO L87 Difference]: Start difference. First operand 7126 states and 10645 transitions. Second operand has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 13 states have internal predecessors, (54), 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) [2022-01-31 22:30:47,113 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:30:49,261 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:30:56,384 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:31:03,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:31:03,962 INFO L93 Difference]: Finished difference Result 15066 states and 23078 transitions. [2022-01-31 22:31:03,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-31 22:31:03,963 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 13 states have internal predecessors, (54), 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 72 [2022-01-31 22:31:03,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:31:03,993 INFO L225 Difference]: With dead ends: 15066 [2022-01-31 22:31:03,994 INFO L226 Difference]: Without dead ends: 7918 [2022-01-31 22:31:04,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=247, Invalid=1235, Unknown=0, NotChecked=0, Total=1482 [2022-01-31 22:31:04,018 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 1828 mSDsluCounter, 1866 mSDsCounter, 0 mSdLazyCounter, 8019 mSolverCounterSat, 842 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1858 SdHoareTripleChecker+Valid, 2566 SdHoareTripleChecker+Invalid, 8864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 842 IncrementalHoareTripleChecker+Valid, 8019 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.6s IncrementalHoareTripleChecker+Time [2022-01-31 22:31:04,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1858 Valid, 2566 Invalid, 8864 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [842 Valid, 8019 Invalid, 3 Unknown, 0 Unchecked, 22.6s Time] [2022-01-31 22:31:04,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7918 states. [2022-01-31 22:31:05,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7918 to 7147. [2022-01-31 22:31:05,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7147 states, 5743 states have (on average 1.4351384293923037) internal successors, (8242), 5893 states have internal predecessors, (8242), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-01-31 22:31:05,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7147 states to 7147 states and 10666 transitions. [2022-01-31 22:31:05,720 INFO L78 Accepts]: Start accepts. Automaton has 7147 states and 10666 transitions. Word has length 72 [2022-01-31 22:31:05,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:31:05,720 INFO L470 AbstractCegarLoop]: Abstraction has 7147 states and 10666 transitions. [2022-01-31 22:31:05,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 13 states have internal predecessors, (54), 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) [2022-01-31 22:31:05,720 INFO L276 IsEmpty]: Start isEmpty. Operand 7147 states and 10666 transitions. [2022-01-31 22:31:05,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-31 22:31:05,721 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:31:05,721 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:31:05,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-31 22:31:05,722 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:31:05,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:31:05,722 INFO L85 PathProgramCache]: Analyzing trace with hash 146660993, now seen corresponding path program 6 times [2022-01-31 22:31:05,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:31:05,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [61053485] [2022-01-31 22:31:05,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:31:05,723 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:31:05,723 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 22:31:05,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:31:05,733 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:31:05,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:31:05,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:31:05,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:31:05,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:31:05,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:31:06,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-31 22:31:06,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:31:06,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-01-31 22:31:06,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:31:06,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:31:06,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:31:06,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 22:31:06,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:31:07,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 22:31:07,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:31:07,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:31:07,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:31:07,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:31:07,119 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:31:07,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [61053485] [2022-01-31 22:31:07,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [61053485] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:31:07,119 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:31:07,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-31 22:31:07,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911129246] [2022-01-31 22:31:07,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:31:07,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-31 22:31:07,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:31:07,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-31 22:31:07,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2022-01-31 22:31:07,120 INFO L87 Difference]: Start difference. First operand 7147 states and 10666 transitions. Second operand has 22 states, 22 states have (on average 2.5) internal successors, (55), 14 states have internal predecessors, (55), 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) [2022-01-31 22:31:15,932 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 [] [2022-01-31 22:31:18,081 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:31:23,954 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:31:30,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:31:30,406 INFO L93 Difference]: Finished difference Result 15107 states and 23119 transitions. [2022-01-31 22:31:30,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-31 22:31:30,408 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.5) internal successors, (55), 14 states have internal predecessors, (55), 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 73 [2022-01-31 22:31:30,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:31:30,436 INFO L225 Difference]: With dead ends: 15107 [2022-01-31 22:31:30,436 INFO L226 Difference]: Without dead ends: 7939 [2022-01-31 22:31:30,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=261, Invalid=1379, Unknown=0, NotChecked=0, Total=1640 [2022-01-31 22:31:30,458 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 2304 mSDsluCounter, 1378 mSDsCounter, 0 mSdLazyCounter, 5682 mSolverCounterSat, 1002 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2334 SdHoareTripleChecker+Valid, 2078 SdHoareTripleChecker+Invalid, 6687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1002 IncrementalHoareTripleChecker+Valid, 5682 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.9s IncrementalHoareTripleChecker+Time [2022-01-31 22:31:30,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2334 Valid, 2078 Invalid, 6687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1002 Valid, 5682 Invalid, 3 Unknown, 0 Unchecked, 18.9s Time] [2022-01-31 22:31:30,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7939 states. [2022-01-31 22:31:32,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7939 to 7168. [2022-01-31 22:31:32,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7168 states, 5764 states have (on average 1.4335530881332408) internal successors, (8263), 5914 states have internal predecessors, (8263), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-01-31 22:31:32,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7168 states to 7168 states and 10687 transitions. [2022-01-31 22:31:32,132 INFO L78 Accepts]: Start accepts. Automaton has 7168 states and 10687 transitions. Word has length 73 [2022-01-31 22:31:32,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:31:32,132 INFO L470 AbstractCegarLoop]: Abstraction has 7168 states and 10687 transitions. [2022-01-31 22:31:32,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.5) internal successors, (55), 14 states have internal predecessors, (55), 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) [2022-01-31 22:31:32,132 INFO L276 IsEmpty]: Start isEmpty. Operand 7168 states and 10687 transitions. [2022-01-31 22:31:32,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-31 22:31:32,133 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:31:32,133 INFO L514 BasicCegarLoop]: trace histogram [11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:31:32,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-31 22:31:32,133 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:31:32,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:31:32,133 INFO L85 PathProgramCache]: Analyzing trace with hash 725663356, now seen corresponding path program 5 times [2022-01-31 22:31:32,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:31:32,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [140979078] [2022-01-31 22:31:32,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:31:32,134 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:31:32,134 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 22:31:32,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:31:32,144 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:31:32,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:31:32,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:31:32,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:31:32,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:31:32,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:31:33,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 22:31:33,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:31:33,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 22:31:33,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:31:33,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:31:33,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:31:33,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 22:31:33,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:31:33,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 22:31:33,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:31:33,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:31:33,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:31:33,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:31:33,750 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:31:33,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [140979078] [2022-01-31 22:31:33,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [140979078] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:31:33,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:31:33,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-01-31 22:31:33,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584595702] [2022-01-31 22:31:33,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:31:33,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-31 22:31:33,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:31:33,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-31 22:31:33,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2022-01-31 22:31:33,751 INFO L87 Difference]: Start difference. First operand 7168 states and 10687 transitions. Second operand has 23 states, 23 states have (on average 2.391304347826087) internal successors, (55), 15 states have internal predecessors, (55), 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) [2022-01-31 22:31:46,928 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:31:49,051 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:31:51,177 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:32:00,377 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:32:12,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:32:12,514 INFO L93 Difference]: Finished difference Result 15148 states and 23160 transitions. [2022-01-31 22:32:12,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-31 22:32:12,516 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.391304347826087) internal successors, (55), 15 states have internal predecessors, (55), 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 73 [2022-01-31 22:32:12,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:32:12,546 INFO L225 Difference]: With dead ends: 15148 [2022-01-31 22:32:12,547 INFO L226 Difference]: Without dead ends: 7960 [2022-01-31 22:32:12,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=275, Invalid=1531, Unknown=0, NotChecked=0, Total=1806 [2022-01-31 22:32:12,571 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 1508 mSDsluCounter, 2882 mSDsCounter, 0 mSdLazyCounter, 12217 mSolverCounterSat, 713 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1538 SdHoareTripleChecker+Valid, 3582 SdHoareTripleChecker+Invalid, 12934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 713 IncrementalHoareTripleChecker+Valid, 12217 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:32:12,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1538 Valid, 3582 Invalid, 12934 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [713 Valid, 12217 Invalid, 4 Unknown, 0 Unchecked, 34.1s Time] [2022-01-31 22:32:12,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7960 states. [2022-01-31 22:32:14,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7960 to 7189. [2022-01-31 22:32:14,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7189 states, 5785 states have (on average 1.4319792566983578) internal successors, (8284), 5935 states have internal predecessors, (8284), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-01-31 22:32:14,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7189 states to 7189 states and 10708 transitions. [2022-01-31 22:32:14,366 INFO L78 Accepts]: Start accepts. Automaton has 7189 states and 10708 transitions. Word has length 73 [2022-01-31 22:32:14,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:32:14,366 INFO L470 AbstractCegarLoop]: Abstraction has 7189 states and 10708 transitions. [2022-01-31 22:32:14,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.391304347826087) internal successors, (55), 15 states have internal predecessors, (55), 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) [2022-01-31 22:32:14,366 INFO L276 IsEmpty]: Start isEmpty. Operand 7189 states and 10708 transitions. [2022-01-31 22:32:14,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-31 22:32:14,367 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:32:14,367 INFO L514 BasicCegarLoop]: trace histogram [12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:32:14,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-31 22:32:14,367 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:32:14,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:32:14,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1764052097, now seen corresponding path program 7 times [2022-01-31 22:32:14,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:32:14,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [225972189] [2022-01-31 22:32:14,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:32:14,368 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:32:14,368 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 22:32:14,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:32:14,378 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:32:14,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:32:14,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:32:14,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:32:14,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:32:14,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:32:15,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-01-31 22:32:15,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:32:16,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-01-31 22:32:16,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:32:16,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:32:16,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:32:16,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-31 22:32:16,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:32:16,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-01-31 22:32:16,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:32:16,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:32:16,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:32:16,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:32:16,418 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:32:16,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [225972189] [2022-01-31 22:32:16,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [225972189] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:32:16,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:32:16,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-01-31 22:32:16,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385864832] [2022-01-31 22:32:16,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:32:16,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-31 22:32:16,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:32:16,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-31 22:32:16,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2022-01-31 22:32:16,419 INFO L87 Difference]: Start difference. First operand 7189 states and 10708 transitions. Second operand has 24 states, 24 states have (on average 2.375) internal successors, (57), 16 states have internal predecessors, (57), 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) [2022-01-31 22:32:28,923 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:32:31,045 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:32:38,885 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 [] [2022-01-31 22:32:47,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:32:47,232 INFO L93 Difference]: Finished difference Result 15189 states and 23201 transitions. [2022-01-31 22:32:47,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-31 22:32:47,233 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.375) internal successors, (57), 16 states have internal predecessors, (57), 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 75 [2022-01-31 22:32:47,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:32:47,261 INFO L225 Difference]: With dead ends: 15189 [2022-01-31 22:32:47,261 INFO L226 Difference]: Without dead ends: 7981 [2022-01-31 22:32:47,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=289, Invalid=1691, Unknown=0, NotChecked=0, Total=1980 [2022-01-31 22:32:47,283 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 1788 mSDsluCounter, 1681 mSDsCounter, 0 mSdLazyCounter, 7188 mSolverCounterSat, 845 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1818 SdHoareTripleChecker+Valid, 2381 SdHoareTripleChecker+Invalid, 8036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 845 IncrementalHoareTripleChecker+Valid, 7188 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.3s IncrementalHoareTripleChecker+Time [2022-01-31 22:32:47,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1818 Valid, 2381 Invalid, 8036 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [845 Valid, 7188 Invalid, 3 Unknown, 0 Unchecked, 25.3s Time] [2022-01-31 22:32:47,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7981 states. [2022-01-31 22:32:49,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7981 to 7210. [2022-01-31 22:32:49,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7210 states, 5806 states have (on average 1.4304168101963486) internal successors, (8305), 5956 states have internal predecessors, (8305), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-01-31 22:32:49,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7210 states to 7210 states and 10729 transitions. [2022-01-31 22:32:49,096 INFO L78 Accepts]: Start accepts. Automaton has 7210 states and 10729 transitions. Word has length 75 [2022-01-31 22:32:49,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:32:49,096 INFO L470 AbstractCegarLoop]: Abstraction has 7210 states and 10729 transitions. [2022-01-31 22:32:49,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.375) internal successors, (57), 16 states have internal predecessors, (57), 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) [2022-01-31 22:32:49,097 INFO L276 IsEmpty]: Start isEmpty. Operand 7210 states and 10729 transitions. [2022-01-31 22:32:49,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-31 22:32:49,097 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:32:49,097 INFO L514 BasicCegarLoop]: trace histogram [13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:32:49,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-31 22:32:49,097 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:32:49,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:32:49,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1951912836, now seen corresponding path program 6 times [2022-01-31 22:32:49,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:32:49,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1113665925] [2022-01-31 22:32:49,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:32:49,099 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:32:49,099 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 22:32:49,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:32:49,108 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:32:49,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:32:49,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:32:49,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:32:49,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:32:49,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:32:50,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-01-31 22:32:50,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:32:50,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-31 22:32:50,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:32:51,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:32:51,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:32:51,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-31 22:32:51,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:32:51,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-01-31 22:32:51,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:32:51,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:32:51,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:32:51,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:32:51,331 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:32:51,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1113665925] [2022-01-31 22:32:51,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1113665925] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:32:51,331 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:32:51,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-01-31 22:32:51,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803147531] [2022-01-31 22:32:51,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:32:51,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-31 22:32:51,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:32:51,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-31 22:32:51,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2022-01-31 22:32:51,332 INFO L87 Difference]: Start difference. First operand 7210 states and 10729 transitions. Second operand has 25 states, 25 states have (on average 2.28) internal successors, (57), 17 states have internal predecessors, (57), 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) [2022-01-31 22:33:06,307 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 [] [2022-01-31 22:33:08,428 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:33:10,548 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:33:12,703 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:33:14,864 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:33:16,987 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:33:19,114 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:33:21,237 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:33:31,200 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:33:44,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:33:44,635 INFO L93 Difference]: Finished difference Result 15230 states and 23242 transitions. [2022-01-31 22:33:44,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-31 22:33:44,637 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.28) internal successors, (57), 17 states have internal predecessors, (57), 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 75 [2022-01-31 22:33:44,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:33:44,668 INFO L225 Difference]: With dead ends: 15230 [2022-01-31 22:33:44,668 INFO L226 Difference]: Without dead ends: 8002 [2022-01-31 22:33:44,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=303, Invalid=1859, Unknown=0, NotChecked=0, Total=2162 [2022-01-31 22:33:44,693 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 1719 mSDsluCounter, 2491 mSDsCounter, 0 mSdLazyCounter, 10341 mSolverCounterSat, 807 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1749 SdHoareTripleChecker+Valid, 3191 SdHoareTripleChecker+Invalid, 11157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 807 IncrementalHoareTripleChecker+Valid, 10341 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:33:44,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1749 Valid, 3191 Invalid, 11157 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [807 Valid, 10341 Invalid, 9 Unknown, 0 Unchecked, 48.1s Time] [2022-01-31 22:33:44,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8002 states. [2022-01-31 22:33:46,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8002 to 7231. [2022-01-31 22:33:46,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7231 states, 5827 states have (on average 1.4288656255362966) internal successors, (8326), 5977 states have internal predecessors, (8326), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-01-31 22:33:46,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7231 states to 7231 states and 10750 transitions. [2022-01-31 22:33:46,533 INFO L78 Accepts]: Start accepts. Automaton has 7231 states and 10750 transitions. Word has length 75 [2022-01-31 22:33:46,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:33:46,533 INFO L470 AbstractCegarLoop]: Abstraction has 7231 states and 10750 transitions. [2022-01-31 22:33:46,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.28) internal successors, (57), 17 states have internal predecessors, (57), 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) [2022-01-31 22:33:46,534 INFO L276 IsEmpty]: Start isEmpty. Operand 7231 states and 10750 transitions. [2022-01-31 22:33:46,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-31 22:33:46,534 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:33:46,534 INFO L514 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:33:46,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-31 22:33:46,535 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:33:46,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:33:46,535 INFO L85 PathProgramCache]: Analyzing trace with hash 2060078060, now seen corresponding path program 7 times [2022-01-31 22:33:46,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:33:46,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [348940809] [2022-01-31 22:33:46,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:33:46,536 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:33:46,536 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 22:33:46,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:33:46,547 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:33:46,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:33:46,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:33:46,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:33:46,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:33:46,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:33:49,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-01-31 22:33:49,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:33:49,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 22:33:49,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:33:49,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:33:49,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:33:49,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 22:33:49,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:33:49,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-01-31 22:33:49,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:33:49,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:33:49,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:33:49,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:33:49,716 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:33:49,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [348940809] [2022-01-31 22:33:49,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [348940809] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:33:49,717 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:33:49,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-31 22:33:49,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628888914] [2022-01-31 22:33:49,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:33:49,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-31 22:33:49,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:33:49,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-31 22:33:49,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=578, Unknown=0, NotChecked=0, Total=650 [2022-01-31 22:33:49,717 INFO L87 Difference]: Start difference. First operand 7231 states and 10750 transitions. Second operand has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 18 states have internal predecessors, (58), 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) [2022-01-31 22:34:14,911 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 [] [2022-01-31 22:34:26,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:34:26,918 INFO L93 Difference]: Finished difference Result 15271 states and 23283 transitions. [2022-01-31 22:34:26,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-31 22:34:26,919 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 18 states have internal predecessors, (58), 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 76 [2022-01-31 22:34:26,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:34:26,948 INFO L225 Difference]: With dead ends: 15271 [2022-01-31 22:34:26,948 INFO L226 Difference]: Without dead ends: 8023 [2022-01-31 22:34:26,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=317, Invalid=2035, Unknown=0, NotChecked=0, Total=2352 [2022-01-31 22:34:26,969 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 1949 mSDsluCounter, 2163 mSDsCounter, 0 mSdLazyCounter, 9557 mSolverCounterSat, 872 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1979 SdHoareTripleChecker+Valid, 2863 SdHoareTripleChecker+Invalid, 10430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 872 IncrementalHoareTripleChecker+Valid, 9557 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.4s IncrementalHoareTripleChecker+Time [2022-01-31 22:34:26,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1979 Valid, 2863 Invalid, 10430 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [872 Valid, 9557 Invalid, 1 Unknown, 0 Unchecked, 31.4s Time] [2022-01-31 22:34:26,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8023 states. [2022-01-31 22:34:28,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8023 to 7252. [2022-01-31 22:34:28,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7252 states, 5848 states have (on average 1.427325581395349) internal successors, (8347), 5998 states have internal predecessors, (8347), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-01-31 22:34:28,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7252 states to 7252 states and 10771 transitions. [2022-01-31 22:34:28,798 INFO L78 Accepts]: Start accepts. Automaton has 7252 states and 10771 transitions. Word has length 76 [2022-01-31 22:34:28,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:34:28,798 INFO L470 AbstractCegarLoop]: Abstraction has 7252 states and 10771 transitions. [2022-01-31 22:34:28,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 18 states have internal predecessors, (58), 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) [2022-01-31 22:34:28,798 INFO L276 IsEmpty]: Start isEmpty. Operand 7252 states and 10771 transitions. [2022-01-31 22:34:28,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-31 22:34:28,799 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:34:28,799 INFO L514 BasicCegarLoop]: trace histogram [15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:34:28,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-31 22:34:28,799 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:34:28,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:34:28,800 INFO L85 PathProgramCache]: Analyzing trace with hash -58638863, now seen corresponding path program 8 times [2022-01-31 22:34:28,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:34:28,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [236502700] [2022-01-31 22:34:28,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:34:28,805 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:34:28,805 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 22:34:28,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:34:28,815 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:34:28,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:34:29,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:34:29,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:34:29,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:34:29,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:34:31,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 22:34:31,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:34:31,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 22:34:31,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:34:31,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:34:31,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:34:31,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-01-31 22:34:31,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:34:32,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 22:34:32,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:34:32,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:34:32,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:34:32,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:34:32,209 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:34:32,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [236502700] [2022-01-31 22:34:32,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [236502700] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:34:32,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:34:32,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-31 22:34:32,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357762312] [2022-01-31 22:34:32,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:34:32,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-31 22:34:32,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:34:32,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-31 22:34:32,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2022-01-31 22:34:32,210 INFO L87 Difference]: Start difference. First operand 7252 states and 10771 transitions. Second operand has 27 states, 27 states have (on average 2.2222222222222223) internal successors, (60), 19 states have internal predecessors, (60), 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) [2022-01-31 22:34:43,998 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 [] [2022-01-31 22:34:46,126 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:34:54,161 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:35:02,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:35:02,442 INFO L93 Difference]: Finished difference Result 15312 states and 23324 transitions. [2022-01-31 22:35:02,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-31 22:35:02,443 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.2222222222222223) internal successors, (60), 19 states have internal predecessors, (60), 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 78 [2022-01-31 22:35:02,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:35:02,480 INFO L225 Difference]: With dead ends: 15312 [2022-01-31 22:35:02,480 INFO L226 Difference]: Without dead ends: 8044 [2022-01-31 22:35:02,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=331, Invalid=2219, Unknown=0, NotChecked=0, Total=2550 [2022-01-31 22:35:02,505 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 1663 mSDsluCounter, 1256 mSDsCounter, 0 mSdLazyCounter, 5932 mSolverCounterSat, 714 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1693 SdHoareTripleChecker+Valid, 1956 SdHoareTripleChecker+Invalid, 6649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 714 IncrementalHoareTripleChecker+Valid, 5932 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.5s IncrementalHoareTripleChecker+Time [2022-01-31 22:35:02,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1693 Valid, 1956 Invalid, 6649 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [714 Valid, 5932 Invalid, 3 Unknown, 0 Unchecked, 23.5s Time] [2022-01-31 22:35:02,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8044 states. [2022-01-31 22:35:04,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8044 to 7273. [2022-01-31 22:35:04,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7273 states, 5869 states have (on average 1.4257965581870846) internal successors, (8368), 6019 states have internal predecessors, (8368), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-01-31 22:35:04,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7273 states to 7273 states and 10792 transitions. [2022-01-31 22:35:04,368 INFO L78 Accepts]: Start accepts. Automaton has 7273 states and 10792 transitions. Word has length 78 [2022-01-31 22:35:04,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:35:04,368 INFO L470 AbstractCegarLoop]: Abstraction has 7273 states and 10792 transitions. [2022-01-31 22:35:04,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.2222222222222223) internal successors, (60), 19 states have internal predecessors, (60), 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) [2022-01-31 22:35:04,368 INFO L276 IsEmpty]: Start isEmpty. Operand 7273 states and 10792 transitions. [2022-01-31 22:35:04,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-31 22:35:04,369 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:35:04,369 INFO L514 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:35:04,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-31 22:35:04,369 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:35:04,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:35:04,369 INFO L85 PathProgramCache]: Analyzing trace with hash 812230785, now seen corresponding path program 9 times [2022-01-31 22:35:04,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:35:04,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [959386615] [2022-01-31 22:35:04,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:35:04,371 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:35:04,371 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 22:35:04,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:35:04,381 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:35:04,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:35:04,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:35:04,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:35:04,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:35:04,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:35:07,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-01-31 22:35:07,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:35:07,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-01-31 22:35:07,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:35:08,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:35:08,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:35:08,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-31 22:35:08,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:35:08,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-01-31 22:35:08,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:35:08,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:35:08,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:35:08,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:35:08,803 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:35:08,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [959386615] [2022-01-31 22:35:08,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [959386615] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:35:08,803 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:35:08,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-31 22:35:08,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390108325] [2022-01-31 22:35:08,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:35:08,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-31 22:35:08,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:35:08,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-31 22:35:08,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=678, Unknown=0, NotChecked=0, Total=756 [2022-01-31 22:35:08,804 INFO L87 Difference]: Start difference. First operand 7273 states and 10792 transitions. Second operand has 28 states, 28 states have (on average 2.1785714285714284) internal successors, (61), 20 states have internal predecessors, (61), 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) [2022-01-31 22:35:34,216 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:35:49,477 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:36:09,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:36:09,120 INFO L93 Difference]: Finished difference Result 15353 states and 23365 transitions. [2022-01-31 22:36:09,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-01-31 22:36:09,122 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.1785714285714284) internal successors, (61), 20 states have internal predecessors, (61), 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 79 [2022-01-31 22:36:09,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:36:09,154 INFO L225 Difference]: With dead ends: 15353 [2022-01-31 22:36:09,155 INFO L226 Difference]: Without dead ends: 8065 [2022-01-31 22:36:09,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=345, Invalid=2411, Unknown=0, NotChecked=0, Total=2756 [2022-01-31 22:36:09,176 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 2187 mSDsluCounter, 2676 mSDsCounter, 0 mSdLazyCounter, 11409 mSolverCounterSat, 1020 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2217 SdHoareTripleChecker+Valid, 3376 SdHoareTripleChecker+Invalid, 12431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1020 IncrementalHoareTripleChecker+Valid, 11409 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52.4s IncrementalHoareTripleChecker+Time [2022-01-31 22:36:09,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2217 Valid, 3376 Invalid, 12431 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1020 Valid, 11409 Invalid, 2 Unknown, 0 Unchecked, 52.4s Time] [2022-01-31 22:36:09,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8065 states. [2022-01-31 22:36:11,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8065 to 7294. [2022-01-31 22:36:11,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7294 states, 5890 states have (on average 1.4242784380305602) internal successors, (8389), 6040 states have internal predecessors, (8389), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-01-31 22:36:11,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7294 states to 7294 states and 10813 transitions. [2022-01-31 22:36:11,109 INFO L78 Accepts]: Start accepts. Automaton has 7294 states and 10813 transitions. Word has length 79 [2022-01-31 22:36:11,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:36:11,109 INFO L470 AbstractCegarLoop]: Abstraction has 7294 states and 10813 transitions. [2022-01-31 22:36:11,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.1785714285714284) internal successors, (61), 20 states have internal predecessors, (61), 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) [2022-01-31 22:36:11,110 INFO L276 IsEmpty]: Start isEmpty. Operand 7294 states and 10813 transitions. [2022-01-31 22:36:11,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-31 22:36:11,110 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:36:11,110 INFO L514 BasicCegarLoop]: trace histogram [17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:36:11,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-31 22:36:11,111 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:36:11,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:36:11,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1391233148, now seen corresponding path program 8 times [2022-01-31 22:36:11,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:36:11,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [428731180] [2022-01-31 22:36:11,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:36:11,112 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:36:11,112 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 22:36:11,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:36:11,123 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:36:11,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:36:11,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:36:11,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:36:11,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:36:11,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:36:15,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-31 22:36:15,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:36:16,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-31 22:36:16,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:36:16,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:36:16,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:36:16,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 22:36:16,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:36:16,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-01-31 22:36:16,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:36:17,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:36:17,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:36:17,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:36:17,205 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:36:17,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [428731180] [2022-01-31 22:36:17,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [428731180] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:36:17,205 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:36:17,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-01-31 22:36:17,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190503363] [2022-01-31 22:36:17,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:36:17,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-31 22:36:17,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:36:17,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-31 22:36:17,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=731, Unknown=0, NotChecked=0, Total=812 [2022-01-31 22:36:17,206 INFO L87 Difference]: Start difference. First operand 7294 states and 10813 transitions. Second operand has 29 states, 29 states have (on average 2.103448275862069) internal successors, (61), 21 states have internal predecessors, (61), 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) [2022-01-31 22:36:57,711 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 [] [2022-01-31 22:37:18,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:37:18,606 INFO L93 Difference]: Finished difference Result 15394 states and 23406 transitions. [2022-01-31 22:37:18,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-31 22:37:18,607 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.103448275862069) internal successors, (61), 21 states have internal predecessors, (61), 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 79 [2022-01-31 22:37:18,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:37:18,641 INFO L225 Difference]: With dead ends: 15394 [2022-01-31 22:37:18,641 INFO L226 Difference]: Without dead ends: 8086 [2022-01-31 22:37:18,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=359, Invalid=2611, Unknown=0, NotChecked=0, Total=2970 [2022-01-31 22:37:18,665 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 2165 mSDsluCounter, 2802 mSDsCounter, 0 mSdLazyCounter, 11779 mSolverCounterSat, 939 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2195 SdHoareTripleChecker+Valid, 3502 SdHoareTripleChecker+Invalid, 12719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 939 IncrementalHoareTripleChecker+Valid, 11779 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.9s IncrementalHoareTripleChecker+Time [2022-01-31 22:37:18,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2195 Valid, 3502 Invalid, 12719 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [939 Valid, 11779 Invalid, 1 Unknown, 0 Unchecked, 51.9s Time] [2022-01-31 22:37:18,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8086 states. [2022-01-31 22:37:20,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8086 to 7315. [2022-01-31 22:37:20,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7315 states, 5911 states have (on average 1.4227711047200136) internal successors, (8410), 6061 states have internal predecessors, (8410), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-01-31 22:37:20,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7315 states to 7315 states and 10834 transitions. [2022-01-31 22:37:20,638 INFO L78 Accepts]: Start accepts. Automaton has 7315 states and 10834 transitions. Word has length 79 [2022-01-31 22:37:20,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:37:20,639 INFO L470 AbstractCegarLoop]: Abstraction has 7315 states and 10834 transitions. [2022-01-31 22:37:20,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.103448275862069) internal successors, (61), 21 states have internal predecessors, (61), 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) [2022-01-31 22:37:20,639 INFO L276 IsEmpty]: Start isEmpty. Operand 7315 states and 10834 transitions. [2022-01-31 22:37:20,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-31 22:37:20,640 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:37:20,640 INFO L514 BasicCegarLoop]: trace histogram [18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:37:20,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-31 22:37:20,640 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:37:20,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:37:20,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1676578836, now seen corresponding path program 9 times [2022-01-31 22:37:20,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:37:20,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [996074757] [2022-01-31 22:37:20,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:37:20,641 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:37:20,641 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 22:37:20,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:37:20,652 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:37:20,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:37:20,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:37:20,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:37:21,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:37:21,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:37:26,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 22:37:26,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:37:27,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-31 22:37:27,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:37:27,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:37:27,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:37:27,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 22:37:27,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:37:28,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-01-31 22:37:28,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:37:28,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:37:28,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:37:28,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:37:28,458 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:37:28,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [996074757] [2022-01-31 22:37:28,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [996074757] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:37:28,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:37:28,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-01-31 22:37:28,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081142056] [2022-01-31 22:37:28,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:37:28,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-31 22:37:28,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:37:28,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-31 22:37:28,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=786, Unknown=0, NotChecked=0, Total=870 [2022-01-31 22:37:28,460 INFO L87 Difference]: Start difference. First operand 7315 states and 10834 transitions. Second operand has 30 states, 30 states have (on average 2.066666666666667) internal successors, (62), 22 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) [2022-01-31 22:38:04,491 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 [] [2022-01-31 22:38:23,029 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 []