/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/ntdrivers/floppy.i.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05ce600 [2022-02-24 04:32:21,049 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-24 04:32:21,050 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-24 04:32:21,076 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-24 04:32:21,076 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-24 04:32:21,077 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-24 04:32:21,077 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-24 04:32:21,079 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-24 04:32:21,079 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-24 04:32:21,080 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-24 04:32:21,081 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-24 04:32:21,081 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-24 04:32:21,081 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-24 04:32:21,082 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-24 04:32:21,083 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-24 04:32:21,083 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-24 04:32:21,084 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-24 04:32:21,084 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-24 04:32:21,085 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-24 04:32:21,086 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-24 04:32:21,087 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-24 04:32:21,088 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-24 04:32:21,088 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-24 04:32:21,089 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-24 04:32:21,090 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-24 04:32:21,095 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-24 04:32:21,095 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-24 04:32:21,096 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-24 04:32:21,097 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-02-24 04:32:21,102 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-24 04:32:21,102 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-24 04:32:21,103 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-24 04:32:21,103 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-24 04:32:21,103 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-24 04:32:21,103 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-24 04:32:21,103 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-24 04:32:21,104 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-24 04:32:21,104 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-24 04:32:21,104 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-24 04:32:21,104 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-24 04:32:21,104 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-24 04:32:21,104 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-24 04:32:21,104 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-24 04:32:21,104 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-24 04:32:21,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-24 04:32:21,105 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-24 04:32:21,105 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-24 04:32:21,105 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-24 04:32:21,105 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-02-24 04:32:21,105 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-24 04:32:21,265 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-24 04:32:21,287 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-24 04:32:21,289 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-24 04:32:21,289 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-24 04:32:21,291 INFO L275 PluginConnector]: CDTParser initialized [2022-02-24 04:32:21,292 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers/floppy.i.cil-1.c [2022-02-24 04:32:21,342 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbe3b7947/66356c7e133d4f929296c7abd50310cd/FLAG41595e4b0 [2022-02-24 04:32:21,886 INFO L306 CDTParser]: Found 1 translation units. [2022-02-24 04:32:21,887 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/floppy.i.cil-1.c [2022-02-24 04:32:21,921 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbe3b7947/66356c7e133d4f929296c7abd50310cd/FLAG41595e4b0 [2022-02-24 04:32:22,366 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbe3b7947/66356c7e133d4f929296c7abd50310cd [2022-02-24 04:32:22,375 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-24 04:32:22,377 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-24 04:32:22,378 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-24 04:32:22,379 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-24 04:32:22,381 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-24 04:32:22,382 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:32:22" (1/1) ... [2022-02-24 04:32:22,383 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29ac34f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:32:22, skipping insertion in model container [2022-02-24 04:32:22,384 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:32:22" (1/1) ... [2022-02-24 04:32:22,388 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-24 04:32:22,453 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-24 04:32:22,849 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] [2022-02-24 04:32:23,188 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-24 04:32:23,221 INFO L203 MainTranslator]: Completed pre-run [2022-02-24 04:32:23,303 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] [2022-02-24 04:32:23,468 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-24 04:32:23,502 INFO L208 MainTranslator]: Completed translation [2022-02-24 04:32:23,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:32:23 WrapperNode [2022-02-24 04:32:23,503 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-24 04:32:23,504 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-24 04:32:23,504 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-24 04:32:23,504 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-24 04:32:23,512 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:32:23" (1/1) ... [2022-02-24 04:32:23,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:32:23" (1/1) ... [2022-02-24 04:32:23,576 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:32:23" (1/1) ... [2022-02-24 04:32:23,577 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:32:23" (1/1) ... [2022-02-24 04:32:23,709 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:32:23" (1/1) ... [2022-02-24 04:32:23,733 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:32:23" (1/1) ... [2022-02-24 04:32:23,752 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:32:23" (1/1) ... [2022-02-24 04:32:23,777 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-24 04:32:23,778 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-24 04:32:23,778 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-24 04:32:23,779 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-24 04:32:23,780 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:32:23" (1/1) ... [2022-02-24 04:32:23,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-24 04:32:23,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-24 04:32:23,802 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-24 04:32:23,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-24 04:32:23,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-24 04:32:23,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-24 04:32:23,832 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-24 04:32:23,832 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedExchange [2022-02-24 04:32:23,832 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-02-24 04:32:23,832 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-02-24 04:32:23,832 INFO L138 BoogieDeclarations]: Found implementation of procedure DriverEntry [2022-02-24 04:32:23,833 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyUnload [2022-02-24 04:32:23,833 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyAddDevice [2022-02-24 04:32:23,833 INFO L138 BoogieDeclarations]: Found implementation of procedure FlConfigCallBack [2022-02-24 04:32:23,833 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAcpiConfigureFloppy [2022-02-24 04:32:23,833 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2022-02-24 04:32:23,833 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2022-02-24 04:32:23,833 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyDeviceControl [2022-02-24 04:32:23,833 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnp [2022-02-24 04:32:23,833 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyStartDevice [2022-02-24 04:32:23,834 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2022-02-24 04:32:23,834 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPower [2022-02-24 04:32:23,835 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyReadWrite [2022-02-24 04:32:23,835 INFO L138 BoogieDeclarations]: Found implementation of procedure FlInterpretError [2022-02-24 04:32:23,835 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFinishOperation [2022-02-24 04:32:23,835 INFO L138 BoogieDeclarations]: Found implementation of procedure FlStartDrive [2022-02-24 04:32:23,835 INFO L138 BoogieDeclarations]: Found implementation of procedure FlDatarateSpecifyConfigure [2022-02-24 04:32:23,835 INFO L138 BoogieDeclarations]: Found implementation of procedure FlRecalibrateDrive [2022-02-24 04:32:23,835 INFO L138 BoogieDeclarations]: Found implementation of procedure FlDetermineMediaType [2022-02-24 04:32:23,835 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAllocateIoBuffer [2022-02-24 04:32:23,835 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFreeIoBuffer [2022-02-24 04:32:23,835 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyThread [2022-02-24 04:32:23,835 INFO L138 BoogieDeclarations]: Found implementation of procedure FlConsolidateMediaTypeWithBootSector [2022-02-24 04:32:23,836 INFO L138 BoogieDeclarations]: Found implementation of procedure FlCheckBootSector [2022-02-24 04:32:23,836 INFO L138 BoogieDeclarations]: Found implementation of procedure FlReadWriteTrack [2022-02-24 04:32:23,836 INFO L138 BoogieDeclarations]: Found implementation of procedure FlReadWrite [2022-02-24 04:32:23,836 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFormat [2022-02-24 04:32:23,836 INFO L138 BoogieDeclarations]: Found implementation of procedure FlCheckFormatParameters [2022-02-24 04:32:23,836 INFO L138 BoogieDeclarations]: Found implementation of procedure FlIssueCommand [2022-02-24 04:32:23,836 INFO L138 BoogieDeclarations]: Found implementation of procedure FlInitializeControllerHardware [2022-02-24 04:32:23,836 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2022-02-24 04:32:23,836 INFO L138 BoogieDeclarations]: Found implementation of procedure FlHdbit [2022-02-24 04:32:23,836 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyQueueRequest [2022-02-24 04:32:23,836 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCancelQueuedRequest [2022-02-24 04:32:23,836 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2022-02-24 04:32:23,836 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-02-24 04:32:23,836 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-24 04:32:23,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAcquireFastMutex [2022-02-24 04:32:23,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ExReleaseFastMutex [2022-02-24 04:32:23,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2022-02-24 04:32:23,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ExFreePool [2022-02-24 04:32:23,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertHeadList [2022-02-24 04:32:23,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertTailList [2022-02-24 04:32:23,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedRemoveHeadList [2022-02-24 04:32:23,837 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAllocateMdl [2022-02-24 04:32:23,837 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAttachDeviceToDeviceStack [2022-02-24 04:32:23,837 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildAsynchronousFsdRequest [2022-02-24 04:32:23,837 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2022-02-24 04:32:23,837 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateDevice [2022-02-24 04:32:23,837 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateSymbolicLink [2022-02-24 04:32:23,838 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteDevice [2022-02-24 04:32:23,838 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2022-02-24 04:32:23,838 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDetachDevice [2022-02-24 04:32:23,838 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeIrp [2022-02-24 04:32:23,838 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeMdl [2022-02-24 04:32:23,838 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2022-02-24 04:32:23,838 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2022-02-24 04:32:23,838 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2022-02-24 04:32:23,838 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReleaseCancelSpinLock [2022-02-24 04:32:23,838 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-02-24 04:32:23,838 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetHardErrorOrVerifyDevice [2022-02-24 04:32:23,838 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-02-24 04:32:23,838 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-02-24 04:32:23,839 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-02-24 04:32:23,839 INFO L138 BoogieDeclarations]: Found implementation of procedure KeAcquireSpinLockRaiseToDpc [2022-02-24 04:32:23,839 INFO L138 BoogieDeclarations]: Found implementation of procedure KeDelayExecutionThread [2022-02-24 04:32:23,839 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeEvent [2022-02-24 04:32:23,839 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSemaphore [2022-02-24 04:32:23,839 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSpinLock [2022-02-24 04:32:23,839 INFO L138 BoogieDeclarations]: Found implementation of procedure KeReleaseSemaphore [2022-02-24 04:32:23,840 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-02-24 04:32:23,840 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-02-24 04:32:23,840 INFO L138 BoogieDeclarations]: Found implementation of procedure MmAllocateContiguousMemory [2022-02-24 04:32:23,840 INFO L138 BoogieDeclarations]: Found implementation of procedure MmFreeContiguousMemory [2022-02-24 04:32:23,840 INFO L138 BoogieDeclarations]: Found implementation of procedure MmMapLockedPagesSpecifyCache [2022-02-24 04:32:23,840 INFO L138 BoogieDeclarations]: Found implementation of procedure MmPageEntireDriver [2022-02-24 04:32:23,840 INFO L138 BoogieDeclarations]: Found implementation of procedure MmResetDriverPaging [2022-02-24 04:32:23,840 INFO L138 BoogieDeclarations]: Found implementation of procedure MmUnlockPages [2022-02-24 04:32:23,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2022-02-24 04:32:23,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ObfDereferenceObject [2022-02-24 04:32:23,841 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-02-24 04:32:23,841 INFO L138 BoogieDeclarations]: Found implementation of procedure PoStartNextPowerIrp [2022-02-24 04:32:23,842 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2022-02-24 04:32:23,842 INFO L138 BoogieDeclarations]: Found implementation of procedure PsTerminateSystemThread [2022-02-24 04:32:23,843 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlAnsiStringToUnicodeString [2022-02-24 04:32:23,843 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCompareMemory [2022-02-24 04:32:23,843 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCopyUnicodeString [2022-02-24 04:32:23,843 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlDeleteRegistryValue [2022-02-24 04:32:23,843 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlFreeUnicodeString [2022-02-24 04:32:23,843 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitString [2022-02-24 04:32:23,843 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitUnicodeString [2022-02-24 04:32:23,843 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlQueryRegistryValues [2022-02-24 04:32:23,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-02-24 04:32:23,843 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-02-24 04:32:23,844 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-02-24 04:32:23,844 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-02-24 04:32:23,844 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-24 04:32:23,844 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-24 04:32:23,844 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-24 04:32:23,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-24 04:32:23,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-02-24 04:32:23,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-24 04:32:23,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-02-24 04:32:23,844 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2022-02-24 04:32:23,844 INFO L130 BoogieDeclarations]: Found specification of procedure swprintf [2022-02-24 04:32:23,845 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2022-02-24 04:32:23,845 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2022-02-24 04:32:23,845 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2022-02-24 04:32:23,845 INFO L130 BoogieDeclarations]: Found specification of procedure RtlQueryRegistryValues [2022-02-24 04:32:23,846 INFO L130 BoogieDeclarations]: Found specification of procedure RtlDeleteRegistryValue [2022-02-24 04:32:23,846 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitString [2022-02-24 04:32:23,846 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitUnicodeString [2022-02-24 04:32:23,846 INFO L130 BoogieDeclarations]: Found specification of procedure RtlAnsiStringToUnicodeString [2022-02-24 04:32:23,846 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCopyUnicodeString [2022-02-24 04:32:23,846 INFO L130 BoogieDeclarations]: Found specification of procedure RtlFreeUnicodeString [2022-02-24 04:32:23,847 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCompareMemory [2022-02-24 04:32:23,847 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedExchange [2022-02-24 04:32:23,847 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-24 04:32:23,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-24 04:32:23,847 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeEvent [2022-02-24 04:32:23,847 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-02-24 04:32:23,847 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSemaphore [2022-02-24 04:32:23,848 INFO L130 BoogieDeclarations]: Found specification of procedure KeReleaseSemaphore [2022-02-24 04:32:23,848 INFO L130 BoogieDeclarations]: Found specification of procedure KeDelayExecutionThread [2022-02-24 04:32:23,848 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-02-24 04:32:23,848 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSpinLock [2022-02-24 04:32:23,848 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2022-02-24 04:32:23,848 INFO L130 BoogieDeclarations]: Found specification of procedure ExFreePool [2022-02-24 04:32:23,848 INFO L130 BoogieDeclarations]: Found specification of procedure ExAcquireFastMutex [2022-02-24 04:32:23,849 INFO L130 BoogieDeclarations]: Found specification of procedure ExReleaseFastMutex [2022-02-24 04:32:23,849 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertHeadList [2022-02-24 04:32:23,849 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertTailList [2022-02-24 04:32:23,849 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedRemoveHeadList [2022-02-24 04:32:23,849 INFO L130 BoogieDeclarations]: Found specification of procedure MmUnlockPages [2022-02-24 04:32:23,850 INFO L130 BoogieDeclarations]: Found specification of procedure MmMapLockedPagesSpecifyCache [2022-02-24 04:32:23,850 INFO L130 BoogieDeclarations]: Found specification of procedure MmAllocateContiguousMemory [2022-02-24 04:32:23,851 INFO L130 BoogieDeclarations]: Found specification of procedure MmFreeContiguousMemory [2022-02-24 04:32:23,851 INFO L130 BoogieDeclarations]: Found specification of procedure MmResetDriverPaging [2022-02-24 04:32:23,853 INFO L130 BoogieDeclarations]: Found specification of procedure MmPageEntireDriver [2022-02-24 04:32:23,853 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2022-02-24 04:32:23,857 INFO L130 BoogieDeclarations]: Found specification of procedure PsTerminateSystemThread [2022-02-24 04:32:23,857 INFO L130 BoogieDeclarations]: Found specification of procedure IoAllocateMdl [2022-02-24 04:32:23,857 INFO L130 BoogieDeclarations]: Found specification of procedure IoAttachDeviceToDeviceStack [2022-02-24 04:32:23,858 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildAsynchronousFsdRequest [2022-02-24 04:32:23,858 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2022-02-24 04:32:23,858 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-02-24 04:32:23,858 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-02-24 04:32:23,858 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateDevice [2022-02-24 04:32:23,858 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateSymbolicLink [2022-02-24 04:32:23,858 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteDevice [2022-02-24 04:32:23,858 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2022-02-24 04:32:23,858 INFO L130 BoogieDeclarations]: Found specification of procedure IoDetachDevice [2022-02-24 04:32:23,858 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeIrp [2022-02-24 04:32:23,858 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeMdl [2022-02-24 04:32:23,858 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2022-02-24 04:32:23,858 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2022-02-24 04:32:23,858 INFO L130 BoogieDeclarations]: Found specification of procedure IoReleaseCancelSpinLock [2022-02-24 04:32:23,858 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetHardErrorOrVerifyDevice [2022-02-24 04:32:23,858 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2022-02-24 04:32:23,858 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-02-24 04:32:23,858 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-02-24 04:32:23,858 INFO L130 BoogieDeclarations]: Found specification of procedure PoStartNextPowerIrp [2022-02-24 04:32:23,858 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2022-02-24 04:32:23,858 INFO L130 BoogieDeclarations]: Found specification of procedure ObfDereferenceObject [2022-02-24 04:32:23,859 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-02-24 04:32:23,859 INFO L130 BoogieDeclarations]: Found specification of procedure DriverEntry [2022-02-24 04:32:23,859 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyUnload [2022-02-24 04:32:23,859 INFO L130 BoogieDeclarations]: Found specification of procedure FlConfigCallBack [2022-02-24 04:32:23,859 INFO L130 BoogieDeclarations]: Found specification of procedure FlInitializeControllerHardware [2022-02-24 04:32:23,859 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2022-02-24 04:32:23,859 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyDeviceControl [2022-02-24 04:32:23,859 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyReadWrite [2022-02-24 04:32:23,859 INFO L130 BoogieDeclarations]: Found specification of procedure FlRecalibrateDrive [2022-02-24 04:32:23,859 INFO L130 BoogieDeclarations]: Found specification of procedure FlDatarateSpecifyConfigure [2022-02-24 04:32:23,859 INFO L130 BoogieDeclarations]: Found specification of procedure FlStartDrive [2022-02-24 04:32:23,859 INFO L130 BoogieDeclarations]: Found specification of procedure FlFinishOperation [2022-02-24 04:32:23,859 INFO L130 BoogieDeclarations]: Found specification of procedure FlDetermineMediaType [2022-02-24 04:32:23,859 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyThread [2022-02-24 04:32:23,859 INFO L130 BoogieDeclarations]: Found specification of procedure FlReadWrite [2022-02-24 04:32:23,859 INFO L130 BoogieDeclarations]: Found specification of procedure FlFormat [2022-02-24 04:32:23,859 INFO L130 BoogieDeclarations]: Found specification of procedure FlIssueCommand [2022-02-24 04:32:23,859 INFO L130 BoogieDeclarations]: Found specification of procedure FlCheckFormatParameters [2022-02-24 04:32:23,859 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2022-02-24 04:32:23,859 INFO L130 BoogieDeclarations]: Found specification of procedure FlInterpretError [2022-02-24 04:32:23,860 INFO L130 BoogieDeclarations]: Found specification of procedure FlAllocateIoBuffer [2022-02-24 04:32:23,860 INFO L130 BoogieDeclarations]: Found specification of procedure FlFreeIoBuffer [2022-02-24 04:32:23,860 INFO L130 BoogieDeclarations]: Found specification of procedure FlConsolidateMediaTypeWithBootSector [2022-02-24 04:32:23,860 INFO L130 BoogieDeclarations]: Found specification of procedure FlCheckBootSector [2022-02-24 04:32:23,860 INFO L130 BoogieDeclarations]: Found specification of procedure FlReadWriteTrack [2022-02-24 04:32:23,860 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2022-02-24 04:32:23,860 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyAddDevice [2022-02-24 04:32:23,860 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnp [2022-02-24 04:32:23,860 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPower [2022-02-24 04:32:23,860 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2022-02-24 04:32:23,860 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyQueueRequest [2022-02-24 04:32:23,860 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyStartDevice [2022-02-24 04:32:23,860 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2022-02-24 04:32:23,860 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCancelQueuedRequest [2022-02-24 04:32:23,860 INFO L130 BoogieDeclarations]: Found specification of procedure FlAcpiConfigureFloppy [2022-02-24 04:32:23,860 INFO L130 BoogieDeclarations]: Found specification of procedure FlHdbit [2022-02-24 04:32:23,860 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-02-24 04:32:23,860 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-02-24 04:32:23,860 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-02-24 04:32:23,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-02-24 04:32:23,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-02-24 04:32:23,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-02-24 04:32:23,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-24 04:32:23,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-24 04:32:23,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-02-24 04:32:23,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-02-24 04:32:23,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-02-24 04:32:23,861 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-02-24 04:32:23,861 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-24 04:32:23,861 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-02-24 04:32:23,861 INFO L130 BoogieDeclarations]: Found specification of procedure KeAcquireSpinLockRaiseToDpc [2022-02-24 04:32:23,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-24 04:32:23,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-24 04:32:23,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-24 04:32:23,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-02-24 04:32:23,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-02-24 04:32:23,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-02-24 04:32:23,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-02-24 04:32:24,477 INFO L234 CfgBuilder]: Building ICFG [2022-02-24 04:32:24,481 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-24 04:32:24,500 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:24,577 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:32:24,577 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:32:24,577 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:24,583 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:32:24,583 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:32:26,529 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:26,536 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:32:26,536 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:32:26,537 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:26,553 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:32:26,553 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:32:26,557 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:26,568 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:32:26,568 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:32:26,615 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:26,623 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:32:26,624 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:32:26,624 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:26,656 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:32:26,656 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:32:26,657 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:26,663 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:32:26,664 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:32:26,711 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:26,755 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2022-02-24 04:32:26,755 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2022-02-24 04:32:26,813 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:26,822 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:32:26,822 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:32:26,822 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:26,826 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:32:26,826 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:32:26,826 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:26,838 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:32:26,838 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:32:26,847 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:26,854 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:32:26,854 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:32:26,855 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:26,860 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:32:26,860 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:32:34,644 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:34,658 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-02-24 04:32:34,658 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-02-24 04:32:34,696 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:37,156 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !false; [2022-02-24 04:32:37,156 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##37: assume false; [2022-02-24 04:32:37,407 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:37,411 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:32:37,411 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:32:37,466 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:37,490 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2022-02-24 04:32:37,490 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2022-02-24 04:32:37,492 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:37,601 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-02-24 04:32:37,601 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-02-24 04:32:37,602 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:37,643 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2022-02-24 04:32:37,644 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2022-02-24 04:32:48,610 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:48,613 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:32:48,613 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:32:48,719 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:48,723 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:32:48,723 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:32:48,742 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:51,113 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume !false; [2022-02-24 04:32:51,113 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume false; [2022-02-24 04:32:51,147 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:51,326 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##48: assume !false; [2022-02-24 04:32:51,326 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##47: assume false; [2022-02-24 04:32:51,328 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:51,341 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-02-24 04:32:51,342 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-02-24 04:32:51,342 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:51,370 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2022-02-24 04:32:51,370 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2022-02-24 04:32:51,373 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:51,381 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-02-24 04:32:51,381 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-02-24 04:32:51,413 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:51,417 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:32:51,417 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:32:51,426 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:51,430 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:32:51,430 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:32:51,430 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:51,491 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##46: assume !false; [2022-02-24 04:32:51,492 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##45: assume false; [2022-02-24 04:32:51,530 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:53,927 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume !false; [2022-02-24 04:32:53,927 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##13: assume false; [2022-02-24 04:32:53,967 INFO L275 CfgBuilder]: Performing block encoding [2022-02-24 04:32:53,988 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-24 04:32:53,988 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2022-02-24 04:32:53,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:32:53 BoogieIcfgContainer [2022-02-24 04:32:53,991 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-24 04:32:53,992 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-24 04:32:53,992 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-24 04:32:53,995 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-24 04:32:53,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:32:22" (1/3) ... [2022-02-24 04:32:53,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dd9088 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:32:53, skipping insertion in model container [2022-02-24 04:32:53,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:32:23" (2/3) ... [2022-02-24 04:32:53,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dd9088 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:32:53, skipping insertion in model container [2022-02-24 04:32:53,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:32:53" (3/3) ... [2022-02-24 04:32:53,998 INFO L111 eAbstractionObserver]: Analyzing ICFG floppy.i.cil-1.c [2022-02-24 04:32:54,001 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-24 04:32:54,003 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-24 04:32:54,041 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-24 04:32:54,045 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=QVASR [2022-02-24 04:32:54,045 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-24 04:32:54,079 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) [2022-02-24 04:32:54,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-02-24 04:32:54,087 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:32:54,087 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:32:54,088 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:32:54,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:32:54,091 INFO L85 PathProgramCache]: Analyzing trace with hash 760330439, now seen corresponding path program 1 times [2022-02-24 04:32:54,096 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:32:54,097 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1198887140] [2022-02-24 04:32:54,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:32:54,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:32:54,210 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:32:54,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:32:54,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:32:54,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:32:54,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:32:54,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:32:54,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:32:54,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:32:54,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 04:32:54,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:32:55,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:32:55,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:32:55,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:32:55,068 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:32:55,068 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1198887140] [2022-02-24 04:32:55,069 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1198887140] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:32:55,069 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:32:55,069 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-24 04:32:55,070 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403303984] [2022-02-24 04:32:55,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:32:55,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-24 04:32:55,074 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:32:55,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-24 04:32:55,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-02-24 04:32:55,108 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) [2022-02-24 04:33:02,775 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:33:03,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:33:03,669 INFO L93 Difference]: Finished difference Result 1399 states and 2144 transitions. [2022-02-24 04:33:03,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-24 04:33:03,671 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 37 [2022-02-24 04:33:03,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:33:03,697 INFO L225 Difference]: With dead ends: 1399 [2022-02-24 04:33:03,697 INFO L226 Difference]: Without dead ends: 833 [2022-02-24 04:33:03,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-02-24 04:33:03,711 INFO L933 BasicCegarLoop]: 728 mSDtfsCounter, 1822 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 2436 mSolverCounterSat, 917 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s 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, 7.4s IncrementalHoareTripleChecker+Time [2022-02-24 04:33:03,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1850 Valid, 1207 Invalid, 3354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [917 Valid, 2436 Invalid, 1 Unknown, 0 Unchecked, 7.4s Time] [2022-02-24 04:33:03,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2022-02-24 04:33:03,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 651. [2022-02-24 04:33:03,882 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) [2022-02-24 04:33:03,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 906 transitions. [2022-02-24 04:33:03,891 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 906 transitions. Word has length 37 [2022-02-24 04:33:03,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:33:03,892 INFO L470 AbstractCegarLoop]: Abstraction has 651 states and 906 transitions. [2022-02-24 04:33:03,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-24 04:33:03,893 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 906 transitions. [2022-02-24 04:33:03,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-24 04:33:03,894 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:33:03,895 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:33:03,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-24 04:33:03,895 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:33:03,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:33:03,896 INFO L85 PathProgramCache]: Analyzing trace with hash -2031942295, now seen corresponding path program 1 times [2022-02-24 04:33:03,897 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:33:03,897 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [466606778] [2022-02-24 04:33:03,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:33:03,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:33:03,916 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:33:04,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:04,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:33:04,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:04,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:33:04,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:04,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:33:04,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:04,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 04:33:04,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:04,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:33:04,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:04,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-24 04:33:04,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:04,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:33:04,395 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:33:04,395 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [466606778] [2022-02-24 04:33:04,395 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [466606778] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:33:04,395 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:33:04,395 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-24 04:33:04,395 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881576810] [2022-02-24 04:33:04,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:33:04,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-24 04:33:04,396 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:33:04,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-24 04:33:04,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-02-24 04:33:04,397 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) [2022-02-24 04:33:10,977 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:33:15,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:33:15,334 INFO L93 Difference]: Finished difference Result 1886 states and 2773 transitions. [2022-02-24 04:33:15,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-24 04:33:15,334 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (10), 9 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 42 [2022-02-24 04:33:15,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:33:15,342 INFO L225 Difference]: With dead ends: 1886 [2022-02-24 04:33:15,342 INFO L226 Difference]: Without dead ends: 1423 [2022-02-24 04:33:15,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-02-24 04:33:15,345 INFO L933 BasicCegarLoop]: 924 mSDtfsCounter, 2981 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 3571 mSolverCounterSat, 1115 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3019 SdHoareTripleChecker+Valid, 1637 SdHoareTripleChecker+Invalid, 4687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1115 IncrementalHoareTripleChecker+Valid, 3571 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-02-24 04:33:15,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3019 Valid, 1637 Invalid, 4687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1115 Valid, 3571 Invalid, 1 Unknown, 0 Unchecked, 9.7s Time] [2022-02-24 04:33:15,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1423 states. [2022-02-24 04:33:15,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1423 to 1195. [2022-02-24 04:33:15,496 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) [2022-02-24 04:33:15,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1717 transitions. [2022-02-24 04:33:15,501 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1717 transitions. Word has length 42 [2022-02-24 04:33:15,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:33:15,501 INFO L470 AbstractCegarLoop]: Abstraction has 1195 states and 1717 transitions. [2022-02-24 04:33:15,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (10), 9 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-24 04:33:15,501 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1717 transitions. [2022-02-24 04:33:15,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-02-24 04:33:15,503 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:33:15,503 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:33:15,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-24 04:33:15,504 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:33:15,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:33:15,504 INFO L85 PathProgramCache]: Analyzing trace with hash 2071284277, now seen corresponding path program 1 times [2022-02-24 04:33:15,504 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:33:15,504 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [816650498] [2022-02-24 04:33:15,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:33:15,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:33:15,514 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:33:15,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:15,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:33:15,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:15,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:33:15,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:15,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:33:15,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:16,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 04:33:16,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:16,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:33:16,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:16,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-24 04:33:16,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:16,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-02-24 04:33:16,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:16,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:33:16,102 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:33:16,102 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [816650498] [2022-02-24 04:33:16,102 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [816650498] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:33:16,102 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:33:16,102 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-24 04:33:16,102 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211202547] [2022-02-24 04:33:16,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:33:16,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-24 04:33:16,103 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:33:16,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-24 04:33:16,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-02-24 04:33:16,103 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) [2022-02-24 04:33:23,080 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:33:26,116 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:33:28,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:33:28,519 INFO L93 Difference]: Finished difference Result 2186 states and 3260 transitions. [2022-02-24 04:33:28,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-24 04:33:28,520 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 54 [2022-02-24 04:33:28,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:33:28,529 INFO L225 Difference]: With dead ends: 2186 [2022-02-24 04:33:28,529 INFO L226 Difference]: Without dead ends: 2168 [2022-02-24 04:33:28,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-02-24 04:33:28,531 INFO L933 BasicCegarLoop]: 720 mSDtfsCounter, 2910 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 3408 mSolverCounterSat, 990 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2966 SdHoareTripleChecker+Valid, 1371 SdHoareTripleChecker+Invalid, 4400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 990 IncrementalHoareTripleChecker+Valid, 3408 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-02-24 04:33:28,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2966 Valid, 1371 Invalid, 4400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [990 Valid, 3408 Invalid, 2 Unknown, 0 Unchecked, 11.2s Time] [2022-02-24 04:33:28,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2168 states. [2022-02-24 04:33:28,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2168 to 1838. [2022-02-24 04:33:28,758 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) [2022-02-24 04:33:28,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1838 states to 1838 states and 2684 transitions. [2022-02-24 04:33:28,766 INFO L78 Accepts]: Start accepts. Automaton has 1838 states and 2684 transitions. Word has length 54 [2022-02-24 04:33:28,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:33:28,767 INFO L470 AbstractCegarLoop]: Abstraction has 1838 states and 2684 transitions. [2022-02-24 04:33:28,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-24 04:33:28,767 INFO L276 IsEmpty]: Start isEmpty. Operand 1838 states and 2684 transitions. [2022-02-24 04:33:28,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-02-24 04:33:28,769 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:33:28,769 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:33:28,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-24 04:33:28,772 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:33:28,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:33:28,772 INFO L85 PathProgramCache]: Analyzing trace with hash 546834136, now seen corresponding path program 1 times [2022-02-24 04:33:28,772 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:33:28,772 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2139304356] [2022-02-24 04:33:28,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:33:28,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:33:28,783 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:33:28,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:29,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:33:29,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:29,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:33:29,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:29,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:33:29,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:29,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 04:33:29,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:29,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:33:29,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:29,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-24 04:33:29,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:29,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:33:29,221 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:33:29,221 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2139304356] [2022-02-24 04:33:29,221 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2139304356] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:33:29,222 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:33:29,222 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-24 04:33:29,223 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305681842] [2022-02-24 04:33:29,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:33:29,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-24 04:33:29,225 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:33:29,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-24 04:33:29,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-02-24 04:33:29,226 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) [2022-02-24 04:33:36,158 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:33:39,853 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:33:41,976 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:33:45,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:33:45,844 INFO L93 Difference]: Finished difference Result 3657 states and 5559 transitions. [2022-02-24 04:33:45,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-24 04:33:45,844 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 8 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 55 [2022-02-24 04:33:45,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:33:45,867 INFO L225 Difference]: With dead ends: 3657 [2022-02-24 04:33:45,867 INFO L226 Difference]: Without dead ends: 3654 [2022-02-24 04:33:45,870 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 [2022-02-24 04:33:45,877 INFO L933 BasicCegarLoop]: 1116 mSDtfsCounter, 2060 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 4320 mSolverCounterSat, 837 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2100 SdHoareTripleChecker+Valid, 1845 SdHoareTripleChecker+Invalid, 5160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 837 IncrementalHoareTripleChecker+Valid, 4320 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.2s IncrementalHoareTripleChecker+Time [2022-02-24 04:33:45,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2100 Valid, 1845 Invalid, 5160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [837 Valid, 4320 Invalid, 3 Unknown, 0 Unchecked, 15.2s Time] [2022-02-24 04:33:45,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3654 states. [2022-02-24 04:33:46,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3654 to 2949. [2022-02-24 04:33:46,437 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) [2022-02-24 04:33:46,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2949 states to 2949 states and 4323 transitions. [2022-02-24 04:33:46,447 INFO L78 Accepts]: Start accepts. Automaton has 2949 states and 4323 transitions. Word has length 55 [2022-02-24 04:33:46,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:33:46,447 INFO L470 AbstractCegarLoop]: Abstraction has 2949 states and 4323 transitions. [2022-02-24 04:33:46,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 8 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-24 04:33:46,447 INFO L276 IsEmpty]: Start isEmpty. Operand 2949 states and 4323 transitions. [2022-02-24 04:33:46,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-02-24 04:33:46,449 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:33:46,449 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:33:46,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-24 04:33:46,449 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:33:46,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:33:46,449 INFO L85 PathProgramCache]: Analyzing trace with hash -893598350, now seen corresponding path program 1 times [2022-02-24 04:33:46,449 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:33:46,449 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1835562629] [2022-02-24 04:33:46,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:33:46,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:33:46,459 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:33:46,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:46,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:33:46,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:46,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:33:46,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:46,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:33:46,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:46,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 04:33:46,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:46,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:33:46,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:46,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-24 04:33:46,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:46,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:33:46,890 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:33:46,890 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1835562629] [2022-02-24 04:33:46,891 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1835562629] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:33:46,891 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:33:46,891 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-24 04:33:46,891 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873472584] [2022-02-24 04:33:46,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:33:46,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-24 04:33:46,891 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:33:46,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-24 04:33:46,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-02-24 04:33:46,892 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) [2022-02-24 04:33:54,087 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:33:55,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:33:55,510 INFO L93 Difference]: Finished difference Result 3468 states and 5241 transitions. [2022-02-24 04:33:55,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-24 04:33:55,511 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (10), 9 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 55 [2022-02-24 04:33:55,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:33:55,523 INFO L225 Difference]: With dead ends: 3468 [2022-02-24 04:33:55,523 INFO L226 Difference]: Without dead ends: 3464 [2022-02-24 04:33:55,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-02-24 04:33:55,524 INFO L933 BasicCegarLoop]: 709 mSDtfsCounter, 1926 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 2440 mSolverCounterSat, 783 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1954 SdHoareTripleChecker+Valid, 1233 SdHoareTripleChecker+Invalid, 3224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 783 IncrementalHoareTripleChecker+Valid, 2440 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-02-24 04:33:55,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1954 Valid, 1233 Invalid, 3224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [783 Valid, 2440 Invalid, 1 Unknown, 0 Unchecked, 7.4s Time] [2022-02-24 04:33:55,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3464 states. [2022-02-24 04:33:55,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3464 to 2974. [2022-02-24 04:33:55,982 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) [2022-02-24 04:33:55,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2974 states to 2974 states and 4359 transitions. [2022-02-24 04:33:55,991 INFO L78 Accepts]: Start accepts. Automaton has 2974 states and 4359 transitions. Word has length 55 [2022-02-24 04:33:55,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:33:55,993 INFO L470 AbstractCegarLoop]: Abstraction has 2974 states and 4359 transitions. [2022-02-24 04:33:55,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (10), 9 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-24 04:33:55,993 INFO L276 IsEmpty]: Start isEmpty. Operand 2974 states and 4359 transitions. [2022-02-24 04:33:55,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-02-24 04:33:55,994 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:33:55,995 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:33:55,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-24 04:33:55,995 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:33:55,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:33:55,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1696705075, now seen corresponding path program 1 times [2022-02-24 04:33:55,995 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:33:55,995 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [906253318] [2022-02-24 04:33:55,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:33:55,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:33:56,004 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:33:56,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:56,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:33:56,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:56,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:33:56,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:56,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:33:56,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:56,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 04:33:56,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:56,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:33:56,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:56,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-24 04:33:56,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:56,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-24 04:33:56,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:56,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:33:56,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:56,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:33:56,553 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:33:56,553 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [906253318] [2022-02-24 04:33:56,553 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [906253318] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:33:56,553 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:33:56,553 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-24 04:33:56,554 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936611599] [2022-02-24 04:33:56,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:33:56,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-24 04:33:56,555 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:33:56,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-24 04:33:56,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-02-24 04:33:56,555 INFO L87 Difference]: Start difference. First operand 2974 states and 4359 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 04:34:02,733 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:34:04,829 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:34:10,046 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:34:14,475 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:34:16,146 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:34:19,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:34:19,049 INFO L93 Difference]: Finished difference Result 4254 states and 6463 transitions. [2022-02-24 04:34:19,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-24 04:34:19,049 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) Word has length 57 [2022-02-24 04:34:19,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:34:19,092 INFO L225 Difference]: With dead ends: 4254 [2022-02-24 04:34:19,093 INFO L226 Difference]: Without dead ends: 4246 [2022-02-24 04:34:19,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=485, Invalid=1585, Unknown=0, NotChecked=0, Total=2070 [2022-02-24 04:34:19,095 INFO L933 BasicCegarLoop]: 1005 mSDtfsCounter, 3485 mSDsluCounter, 898 mSDsCounter, 0 mSdLazyCounter, 5605 mSolverCounterSat, 1605 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3535 SdHoareTripleChecker+Valid, 1903 SdHoareTripleChecker+Invalid, 7214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1605 IncrementalHoareTripleChecker+Valid, 5605 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.5s IncrementalHoareTripleChecker+Time [2022-02-24 04:34:19,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3535 Valid, 1903 Invalid, 7214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1605 Valid, 5605 Invalid, 4 Unknown, 0 Unchecked, 19.5s Time] [2022-02-24 04:34:19,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4246 states. [2022-02-24 04:34:19,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4246 to 3598. [2022-02-24 04:34:19,711 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) [2022-02-24 04:34:19,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3598 states to 3598 states and 5297 transitions. [2022-02-24 04:34:19,721 INFO L78 Accepts]: Start accepts. Automaton has 3598 states and 5297 transitions. Word has length 57 [2022-02-24 04:34:19,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:34:19,722 INFO L470 AbstractCegarLoop]: Abstraction has 3598 states and 5297 transitions. [2022-02-24 04:34:19,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 04:34:19,722 INFO L276 IsEmpty]: Start isEmpty. Operand 3598 states and 5297 transitions. [2022-02-24 04:34:19,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-02-24 04:34:19,723 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:34:19,723 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:34:19,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-24 04:34:19,723 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:34:19,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:34:19,723 INFO L85 PathProgramCache]: Analyzing trace with hash -582745306, now seen corresponding path program 1 times [2022-02-24 04:34:19,724 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:34:19,724 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615870696] [2022-02-24 04:34:19,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:34:19,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:34:19,732 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:34:19,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:19,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:34:19,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:19,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:34:19,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:20,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:34:20,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:20,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 04:34:20,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:20,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:34:20,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:20,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-24 04:34:20,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:20,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-02-24 04:34:20,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:20,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:34:20,212 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:34:20,213 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1615870696] [2022-02-24 04:34:20,213 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1615870696] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:34:20,213 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:34:20,213 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-24 04:34:20,213 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764389490] [2022-02-24 04:34:20,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:34:20,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-24 04:34:20,213 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:34:20,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-24 04:34:20,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-02-24 04:34:20,214 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) [2022-02-24 04:34:26,142 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:34:29,358 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:34:33,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:34:33,587 INFO L93 Difference]: Finished difference Result 11208 states and 17196 transitions. [2022-02-24 04:34:33,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-24 04:34:33,588 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 [2022-02-24 04:34:33,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:34:33,621 INFO L225 Difference]: With dead ends: 11208 [2022-02-24 04:34:33,621 INFO L226 Difference]: Without dead ends: 7864 [2022-02-24 04:34:33,636 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 [2022-02-24 04:34:33,636 INFO L933 BasicCegarLoop]: 893 mSDtfsCounter, 3290 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 3251 mSolverCounterSat, 1246 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3364 SdHoareTripleChecker+Valid, 1587 SdHoareTripleChecker+Invalid, 4499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1246 IncrementalHoareTripleChecker+Valid, 3251 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2022-02-24 04:34:33,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3364 Valid, 1587 Invalid, 4499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1246 Valid, 3251 Invalid, 2 Unknown, 0 Unchecked, 11.0s Time] [2022-02-24 04:34:33,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7864 states. [2022-02-24 04:34:34,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7864 to 6946. [2022-02-24 04:34:34,914 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) [2022-02-24 04:34:34,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6946 states to 6946 states and 10479 transitions. [2022-02-24 04:34:34,947 INFO L78 Accepts]: Start accepts. Automaton has 6946 states and 10479 transitions. Word has length 57 [2022-02-24 04:34:34,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:34:34,948 INFO L470 AbstractCegarLoop]: Abstraction has 6946 states and 10479 transitions. [2022-02-24 04:34:34,953 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) [2022-02-24 04:34:34,953 INFO L276 IsEmpty]: Start isEmpty. Operand 6946 states and 10479 transitions. [2022-02-24 04:34:34,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-02-24 04:34:34,955 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:34:34,955 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:34:34,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-24 04:34:34,962 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:34:34,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:34:34,962 INFO L85 PathProgramCache]: Analyzing trace with hash -466129244, now seen corresponding path program 1 times [2022-02-24 04:34:34,964 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:34:34,964 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1608995627] [2022-02-24 04:34:34,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:34:34,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:34:34,973 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:34:35,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:35,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:34:35,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:35,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:34:35,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:35,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:34:35,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:35,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 04:34:35,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:35,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:34:35,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:35,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-24 04:34:35,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:35,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:34:35,479 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:34:35,480 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1608995627] [2022-02-24 04:34:35,480 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1608995627] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:34:35,480 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:34:35,480 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-24 04:34:35,480 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766025647] [2022-02-24 04:34:35,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:34:35,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-24 04:34:35,480 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:34:35,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-24 04:34:35,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-02-24 04:34:35,481 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) [2022-02-24 04:34:43,740 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:34:52,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:34:52,122 INFO L93 Difference]: Finished difference Result 14677 states and 22415 transitions. [2022-02-24 04:34:52,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-24 04:34:52,122 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 5 states have internal predecessors, (40), 4 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 56 [2022-02-24 04:34:52,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:34:52,177 INFO L225 Difference]: With dead ends: 14677 [2022-02-24 04:34:52,177 INFO L226 Difference]: Without dead ends: 8095 [2022-02-24 04:34:52,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=453, Invalid=1439, Unknown=0, NotChecked=0, Total=1892 [2022-02-24 04:34:52,198 INFO L933 BasicCegarLoop]: 899 mSDtfsCounter, 5146 mSDsluCounter, 886 mSDsCounter, 0 mSdLazyCounter, 5509 mSolverCounterSat, 2197 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5190 SdHoareTripleChecker+Valid, 1785 SdHoareTripleChecker+Invalid, 7707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2197 IncrementalHoareTripleChecker+Valid, 5509 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2022-02-24 04:34:52,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5190 Valid, 1785 Invalid, 7707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2197 Valid, 5509 Invalid, 1 Unknown, 0 Unchecked, 12.5s Time] [2022-02-24 04:34:52,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8095 states. [2022-02-24 04:34:53,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8095 to 6937. [2022-02-24 04:34:53,354 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) [2022-02-24 04:34:53,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6937 states to 6937 states and 10458 transitions. [2022-02-24 04:34:53,375 INFO L78 Accepts]: Start accepts. Automaton has 6937 states and 10458 transitions. Word has length 56 [2022-02-24 04:34:53,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:34:53,375 INFO L470 AbstractCegarLoop]: Abstraction has 6937 states and 10458 transitions. [2022-02-24 04:34:53,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 5 states have internal predecessors, (40), 4 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-02-24 04:34:53,375 INFO L276 IsEmpty]: Start isEmpty. Operand 6937 states and 10458 transitions. [2022-02-24 04:34:53,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-02-24 04:34:53,376 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:34:53,376 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:34:53,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-24 04:34:53,377 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:34:53,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:34:53,377 INFO L85 PathProgramCache]: Analyzing trace with hash 613167468, now seen corresponding path program 1 times [2022-02-24 04:34:53,377 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:34:53,377 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1056866370] [2022-02-24 04:34:53,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:34:53,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:34:53,386 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:34:53,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:53,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:34:53,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:53,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:34:53,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:53,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:34:53,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:53,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 04:34:53,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:53,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:34:53,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:53,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-24 04:34:53,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:53,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-24 04:34:53,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:53,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:34:53,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:53,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:34:53,886 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:34:53,887 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1056866370] [2022-02-24 04:34:53,887 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1056866370] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:34:53,887 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:34:53,887 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-24 04:34:53,887 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529847200] [2022-02-24 04:34:53,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:34:53,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-24 04:34:53,888 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:34:53,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-24 04:34:53,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-02-24 04:34:53,888 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) [2022-02-24 04:35:01,842 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:35:08,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:35:08,669 INFO L93 Difference]: Finished difference Result 7820 states and 12070 transitions. [2022-02-24 04:35:08,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-24 04:35:08,669 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) Word has length 58 [2022-02-24 04:35:08,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:35:08,732 INFO L225 Difference]: With dead ends: 7820 [2022-02-24 04:35:08,732 INFO L226 Difference]: Without dead ends: 7815 [2022-02-24 04:35:08,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=485, Invalid=1585, Unknown=0, NotChecked=0, Total=2070 [2022-02-24 04:35:08,739 INFO L933 BasicCegarLoop]: 988 mSDtfsCounter, 3648 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 4722 mSolverCounterSat, 1703 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3699 SdHoareTripleChecker+Valid, 1777 SdHoareTripleChecker+Invalid, 6426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1703 IncrementalHoareTripleChecker+Valid, 4722 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2022-02-24 04:35:08,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3699 Valid, 1777 Invalid, 6426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1703 Valid, 4722 Invalid, 1 Unknown, 0 Unchecked, 10.9s Time] [2022-02-24 04:35:08,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7815 states. [2022-02-24 04:35:10,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7815 to 6937. [2022-02-24 04:35:10,128 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) [2022-02-24 04:35:10,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6937 states to 6937 states and 10457 transitions. [2022-02-24 04:35:10,151 INFO L78 Accepts]: Start accepts. Automaton has 6937 states and 10457 transitions. Word has length 58 [2022-02-24 04:35:10,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:35:10,152 INFO L470 AbstractCegarLoop]: Abstraction has 6937 states and 10457 transitions. [2022-02-24 04:35:10,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 04:35:10,152 INFO L276 IsEmpty]: Start isEmpty. Operand 6937 states and 10457 transitions. [2022-02-24 04:35:10,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-02-24 04:35:10,153 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:35:10,153 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:35:10,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-24 04:35:10,153 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:35:10,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:35:10,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1929708227, now seen corresponding path program 1 times [2022-02-24 04:35:10,154 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:35:10,154 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1402694565] [2022-02-24 04:35:10,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:35:10,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:35:10,166 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:35:10,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:10,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:35:10,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:10,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:35:10,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:10,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:35:10,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:10,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 04:35:10,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:10,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:35:10,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:10,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-24 04:35:10,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:10,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-02-24 04:35:10,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:10,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:35:10,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:10,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:35:10,740 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:35:10,740 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1402694565] [2022-02-24 04:35:10,740 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1402694565] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:35:10,740 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:35:10,740 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-24 04:35:10,740 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642610748] [2022-02-24 04:35:10,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:35:10,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-24 04:35:10,741 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:35:10,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-24 04:35:10,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-02-24 04:35:10,742 INFO L87 Difference]: Start difference. First operand 6937 states and 10457 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 04:35:17,818 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:35:21,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:35:21,714 INFO L93 Difference]: Finished difference Result 14740 states and 22518 transitions. [2022-02-24 04:35:21,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-24 04:35:21,731 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 4 states have internal predecessors, (40), 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 58 [2022-02-24 04:35:21,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:35:21,761 INFO L225 Difference]: With dead ends: 14740 [2022-02-24 04:35:21,762 INFO L226 Difference]: Without dead ends: 7831 [2022-02-24 04:35:21,781 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 [2022-02-24 04:35:21,782 INFO L933 BasicCegarLoop]: 699 mSDtfsCounter, 1906 mSDsluCounter, 1114 mSDsCounter, 0 mSdLazyCounter, 4678 mSolverCounterSat, 821 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1938 SdHoareTripleChecker+Valid, 1813 SdHoareTripleChecker+Invalid, 5500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 821 IncrementalHoareTripleChecker+Valid, 4678 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-02-24 04:35:21,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1938 Valid, 1813 Invalid, 5500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [821 Valid, 4678 Invalid, 1 Unknown, 0 Unchecked, 8.7s Time] [2022-02-24 04:35:21,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7831 states. [2022-02-24 04:35:22,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7831 to 6937. [2022-02-24 04:35:22,923 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) [2022-02-24 04:35:22,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6937 states to 6937 states and 10456 transitions. [2022-02-24 04:35:22,942 INFO L78 Accepts]: Start accepts. Automaton has 6937 states and 10456 transitions. Word has length 58 [2022-02-24 04:35:22,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:35:22,942 INFO L470 AbstractCegarLoop]: Abstraction has 6937 states and 10456 transitions. [2022-02-24 04:35:22,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 04:35:22,943 INFO L276 IsEmpty]: Start isEmpty. Operand 6937 states and 10456 transitions. [2022-02-24 04:35:22,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-02-24 04:35:22,944 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:35:22,944 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:35:22,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-02-24 04:35:22,944 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:35:22,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:35:22,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1708625388, now seen corresponding path program 1 times [2022-02-24 04:35:22,944 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:35:22,944 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [106360772] [2022-02-24 04:35:22,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:35:22,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:35:22,953 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:35:23,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:23,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:35:23,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:23,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:35:23,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:23,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:35:23,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:23,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 04:35:23,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:23,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:35:23,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:23,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-24 04:35:23,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:23,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-24 04:35:23,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:23,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:35:23,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:23,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:35:23,679 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:35:23,679 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [106360772] [2022-02-24 04:35:23,679 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [106360772] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:35:23,679 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:35:23,679 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-24 04:35:23,679 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587840047] [2022-02-24 04:35:23,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:35:23,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-24 04:35:23,680 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:35:23,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-24 04:35:23,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-02-24 04:35:23,680 INFO L87 Difference]: Start difference. First operand 6937 states and 10456 transitions. Second operand has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 04:35:32,073 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:35:36,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:35:36,045 INFO L93 Difference]: Finished difference Result 14697 states and 22709 transitions. [2022-02-24 04:35:36,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-24 04:35:36,046 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 4 states have internal predecessors, (44), 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 62 [2022-02-24 04:35:36,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:35:36,072 INFO L225 Difference]: With dead ends: 14697 [2022-02-24 04:35:36,073 INFO L226 Difference]: Without dead ends: 7729 [2022-02-24 04:35:36,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2022-02-24 04:35:36,101 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 1887 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 3883 mSolverCounterSat, 743 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1917 SdHoareTripleChecker+Valid, 1662 SdHoareTripleChecker+Invalid, 4627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 743 IncrementalHoareTripleChecker+Valid, 3883 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-02-24 04:35:36,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1917 Valid, 1662 Invalid, 4627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [743 Valid, 3883 Invalid, 1 Unknown, 0 Unchecked, 9.8s Time] [2022-02-24 04:35:36,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7729 states. [2022-02-24 04:35:37,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7729 to 6958. [2022-02-24 04:35:37,425 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) [2022-02-24 04:35:37,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6958 states to 6958 states and 10477 transitions. [2022-02-24 04:35:37,445 INFO L78 Accepts]: Start accepts. Automaton has 6958 states and 10477 transitions. Word has length 62 [2022-02-24 04:35:37,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:35:37,445 INFO L470 AbstractCegarLoop]: Abstraction has 6958 states and 10477 transitions. [2022-02-24 04:35:37,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 04:35:37,446 INFO L276 IsEmpty]: Start isEmpty. Operand 6958 states and 10477 transitions. [2022-02-24 04:35:37,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-02-24 04:35:37,448 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:35:37,448 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] [2022-02-24 04:35:37,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-02-24 04:35:37,449 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:35:37,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:35:37,449 INFO L85 PathProgramCache]: Analyzing trace with hash -427353988, now seen corresponding path program 1 times [2022-02-24 04:35:37,449 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:35:37,449 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [543265642] [2022-02-24 04:35:37,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:35:37,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:35:37,469 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:35:37,470 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:35:37,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:37,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:35:37,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:37,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:35:37,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:37,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-24 04:35:37,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:38,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-02-24 04:35:38,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:38,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:35:38,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:38,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-02-24 04:35:38,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:38,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-02-24 04:35:38,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:38,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:35:38,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:38,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:35:38,148 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:35:38,148 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [543265642] [2022-02-24 04:35:38,149 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [543265642] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:35:38,149 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:35:38,149 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-24 04:35:38,149 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6412597] [2022-02-24 04:35:38,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:35:38,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-24 04:35:38,149 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:35:38,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-24 04:35:38,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-02-24 04:35:38,150 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) [2022-02-24 04:35:47,493 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:35:51,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:35:51,508 INFO L93 Difference]: Finished difference Result 14738 states and 22750 transitions. [2022-02-24 04:35:51,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-24 04:35:51,509 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 [2022-02-24 04:35:51,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:35:51,534 INFO L225 Difference]: With dead ends: 14738 [2022-02-24 04:35:51,535 INFO L226 Difference]: Without dead ends: 7750 [2022-02-24 04:35:51,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=135, Invalid=371, Unknown=0, NotChecked=0, Total=506 [2022-02-24 04:35:51,560 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 2776 mSDsluCounter, 1020 mSDsCounter, 0 mSdLazyCounter, 4122 mSolverCounterSat, 1219 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2806 SdHoareTripleChecker+Valid, 1720 SdHoareTripleChecker+Invalid, 5342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1219 IncrementalHoareTripleChecker+Valid, 4122 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2022-02-24 04:35:51,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2806 Valid, 1720 Invalid, 5342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1219 Valid, 4122 Invalid, 1 Unknown, 0 Unchecked, 10.7s Time] [2022-02-24 04:35:51,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7750 states. [2022-02-24 04:35:52,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7750 to 6979. [2022-02-24 04:35:52,883 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) [2022-02-24 04:35:52,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6979 states to 6979 states and 10498 transitions. [2022-02-24 04:35:52,902 INFO L78 Accepts]: Start accepts. Automaton has 6979 states and 10498 transitions. Word has length 63 [2022-02-24 04:35:52,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:35:52,903 INFO L470 AbstractCegarLoop]: Abstraction has 6979 states and 10498 transitions. [2022-02-24 04:35:52,903 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) [2022-02-24 04:35:52,903 INFO L276 IsEmpty]: Start isEmpty. Operand 6979 states and 10498 transitions. [2022-02-24 04:35:52,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-02-24 04:35:52,904 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:35:52,904 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:35:52,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-02-24 04:35:52,904 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:35:52,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:35:52,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1815946881, now seen corresponding path program 1 times [2022-02-24 04:35:52,904 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:35:52,905 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1346210912] [2022-02-24 04:35:52,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:35:52,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:35:52,914 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:35:52,914 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:35:53,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:53,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:35:53,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:53,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:35:53,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:53,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-02-24 04:35:53,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:53,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-24 04:35:53,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:53,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:35:53,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:53,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-02-24 04:35:53,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:53,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-02-24 04:35:53,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:53,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:35:53,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:53,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:35:53,527 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:35:53,527 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1346210912] [2022-02-24 04:35:53,527 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1346210912] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:35:53,527 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:35:53,527 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-24 04:35:53,527 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191279918] [2022-02-24 04:35:53,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:35:53,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-24 04:35:53,528 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:35:53,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-24 04:35:53,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-02-24 04:35:53,529 INFO L87 Difference]: Start difference. First operand 6979 states and 10498 transitions. Second operand has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 6 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) [2022-02-24 04:36:01,837 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:36:05,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:36:05,926 INFO L93 Difference]: Finished difference Result 14779 states and 22791 transitions. [2022-02-24 04:36:05,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-24 04:36:05,927 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 6 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 [2022-02-24 04:36:05,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:36:05,952 INFO L225 Difference]: With dead ends: 14779 [2022-02-24 04:36:05,952 INFO L226 Difference]: Without dead ends: 7771 [2022-02-24 04:36:05,976 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 [2022-02-24 04:36:05,977 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 2610 mSDsluCounter, 1010 mSDsCounter, 0 mSdLazyCounter, 4028 mSolverCounterSat, 1153 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2640 SdHoareTripleChecker+Valid, 1710 SdHoareTripleChecker+Invalid, 5182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 4028 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-02-24 04:36:05,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2640 Valid, 1710 Invalid, 5182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1153 Valid, 4028 Invalid, 1 Unknown, 0 Unchecked, 9.7s Time] [2022-02-24 04:36:05,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7771 states. [2022-02-24 04:36:07,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7771 to 7000. [2022-02-24 04:36:07,544 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) [2022-02-24 04:36:07,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7000 states to 7000 states and 10519 transitions. [2022-02-24 04:36:07,565 INFO L78 Accepts]: Start accepts. Automaton has 7000 states and 10519 transitions. Word has length 65 [2022-02-24 04:36:07,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:36:07,565 INFO L470 AbstractCegarLoop]: Abstraction has 7000 states and 10519 transitions. [2022-02-24 04:36:07,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 6 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) [2022-02-24 04:36:07,565 INFO L276 IsEmpty]: Start isEmpty. Operand 7000 states and 10519 transitions. [2022-02-24 04:36:07,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-02-24 04:36:07,566 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:36:07,566 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] [2022-02-24 04:36:07,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-02-24 04:36:07,567 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:36:07,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:36:07,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1900018052, now seen corresponding path program 2 times [2022-02-24 04:36:07,567 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:36:07,567 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1478116363] [2022-02-24 04:36:07,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:36:07,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:36:07,577 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:36:07,578 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:36:07,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:07,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:36:07,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:07,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:36:07,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:08,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-24 04:36:08,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:08,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-02-24 04:36:08,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:08,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:36:08,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:08,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-24 04:36:08,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:08,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-02-24 04:36:08,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:08,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:36:08,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:08,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:36:08,291 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:36:08,291 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1478116363] [2022-02-24 04:36:08,291 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1478116363] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:36:08,292 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:36:08,292 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-24 04:36:08,292 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525130670] [2022-02-24 04:36:08,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:36:08,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-24 04:36:08,292 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:36:08,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-24 04:36:08,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-02-24 04:36:08,292 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) [2022-02-24 04:36:15,019 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:36:20,662 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:36:25,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:36:25,480 INFO L93 Difference]: Finished difference Result 14820 states and 22832 transitions. [2022-02-24 04:36:25,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-24 04:36:25,486 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 [2022-02-24 04:36:25,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:36:25,562 INFO L225 Difference]: With dead ends: 14820 [2022-02-24 04:36:25,562 INFO L226 Difference]: Without dead ends: 7792 [2022-02-24 04:36:25,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=163, Invalid=539, Unknown=0, NotChecked=0, Total=702 [2022-02-24 04:36:25,588 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 2139 mSDsluCounter, 1217 mSDsCounter, 0 mSdLazyCounter, 5069 mSolverCounterSat, 955 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2169 SdHoareTripleChecker+Valid, 1917 SdHoareTripleChecker+Invalid, 6026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 955 IncrementalHoareTripleChecker+Valid, 5069 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2022-02-24 04:36:25,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2169 Valid, 1917 Invalid, 6026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [955 Valid, 5069 Invalid, 2 Unknown, 0 Unchecked, 14.3s Time] [2022-02-24 04:36:25,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7792 states. [2022-02-24 04:36:26,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7792 to 7021. [2022-02-24 04:36:26,895 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) [2022-02-24 04:36:26,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7021 states to 7021 states and 10540 transitions. [2022-02-24 04:36:26,917 INFO L78 Accepts]: Start accepts. Automaton has 7021 states and 10540 transitions. Word has length 65 [2022-02-24 04:36:26,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:36:26,918 INFO L470 AbstractCegarLoop]: Abstraction has 7021 states and 10540 transitions. [2022-02-24 04:36:26,918 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) [2022-02-24 04:36:26,918 INFO L276 IsEmpty]: Start isEmpty. Operand 7021 states and 10540 transitions. [2022-02-24 04:36:26,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-02-24 04:36:26,920 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:36:26,920 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] [2022-02-24 04:36:26,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-02-24 04:36:26,920 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:36:26,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:36:26,921 INFO L85 PathProgramCache]: Analyzing trace with hash -626150932, now seen corresponding path program 3 times [2022-02-24 04:36:26,921 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:36:26,921 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200158638] [2022-02-24 04:36:26,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:36:26,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:36:26,931 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:36:26,932 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:36:27,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:27,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:36:27,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:27,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:36:27,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:27,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 04:36:27,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:27,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-24 04:36:27,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:27,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:36:27,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:27,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-02-24 04:36:27,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:27,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-02-24 04:36:27,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:27,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:36:27,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:27,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:36:27,796 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:36:27,796 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [200158638] [2022-02-24 04:36:27,796 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [200158638] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:36:27,796 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:36:27,796 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-24 04:36:27,796 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873408346] [2022-02-24 04:36:27,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:36:27,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-24 04:36:27,797 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:36:27,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-24 04:36:27,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-02-24 04:36:27,797 INFO L87 Difference]: Start difference. First operand 7021 states and 10540 transitions. Second operand has 16 states, 16 states have (on average 3.0) internal successors, (48), 8 states have internal predecessors, (48), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 04:36:34,733 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:36:39,935 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:36:45,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:36:45,003 INFO L93 Difference]: Finished difference Result 14861 states and 22873 transitions. [2022-02-24 04:36:45,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-24 04:36:45,003 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 8 states have internal predecessors, (48), 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 66 [2022-02-24 04:36:45,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:36:45,102 INFO L225 Difference]: With dead ends: 14861 [2022-02-24 04:36:45,102 INFO L226 Difference]: Without dead ends: 7813 [2022-02-24 04:36:45,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=177, Invalid=635, Unknown=0, NotChecked=0, Total=812 [2022-02-24 04:36:45,124 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 2139 mSDsluCounter, 1217 mSDsCounter, 0 mSdLazyCounter, 5075 mSolverCounterSat, 959 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2169 SdHoareTripleChecker+Valid, 1917 SdHoareTripleChecker+Invalid, 6036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 959 IncrementalHoareTripleChecker+Valid, 5075 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2022-02-24 04:36:45,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2169 Valid, 1917 Invalid, 6036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [959 Valid, 5075 Invalid, 2 Unknown, 0 Unchecked, 14.0s Time] [2022-02-24 04:36:45,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7813 states. [2022-02-24 04:36:46,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7813 to 7042. [2022-02-24 04:36:46,453 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) [2022-02-24 04:36:46,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7042 states to 7042 states and 10561 transitions. [2022-02-24 04:36:46,474 INFO L78 Accepts]: Start accepts. Automaton has 7042 states and 10561 transitions. Word has length 66 [2022-02-24 04:36:46,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:36:46,474 INFO L470 AbstractCegarLoop]: Abstraction has 7042 states and 10561 transitions. [2022-02-24 04:36:46,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 8 states have internal predecessors, (48), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 04:36:46,475 INFO L276 IsEmpty]: Start isEmpty. Operand 7042 states and 10561 transitions. [2022-02-24 04:36:46,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-02-24 04:36:46,476 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:36:46,476 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] [2022-02-24 04:36:46,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-02-24 04:36:46,476 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:36:46,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:36:46,476 INFO L85 PathProgramCache]: Analyzing trace with hash -249355279, now seen corresponding path program 2 times [2022-02-24 04:36:46,476 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:36:46,476 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1147226470] [2022-02-24 04:36:46,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:36:46,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:36:46,486 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:36:46,486 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:36:46,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:46,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:36:46,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:46,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:36:46,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:47,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-02-24 04:36:47,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:47,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-02-24 04:36:47,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:47,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:36:47,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:47,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-02-24 04:36:47,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:47,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-02-24 04:36:47,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:47,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:36:47,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:47,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:36:47,235 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:36:47,235 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1147226470] [2022-02-24 04:36:47,235 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1147226470] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:36:47,235 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:36:47,236 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-24 04:36:47,236 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612879079] [2022-02-24 04:36:47,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:36:47,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-24 04:36:47,236 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:36:47,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-24 04:36:47,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2022-02-24 04:36:47,236 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) [2022-02-24 04:36:54,611 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:36:56,767 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:37:01,782 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:37:06,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:37:06,780 INFO L93 Difference]: Finished difference Result 14902 states and 22914 transitions. [2022-02-24 04:37:06,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-24 04:37:06,780 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 [2022-02-24 04:37:06,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:37:06,809 INFO L225 Difference]: With dead ends: 14902 [2022-02-24 04:37:06,809 INFO L226 Difference]: Without dead ends: 7834 [2022-02-24 04:37:06,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=191, Invalid=739, Unknown=0, NotChecked=0, Total=930 [2022-02-24 04:37:06,836 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 1754 mSDsluCounter, 1410 mSDsCounter, 0 mSdLazyCounter, 5841 mSolverCounterSat, 809 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1784 SdHoareTripleChecker+Valid, 2110 SdHoareTripleChecker+Invalid, 6653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 809 IncrementalHoareTripleChecker+Valid, 5841 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.5s IncrementalHoareTripleChecker+Time [2022-02-24 04:37:06,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1784 Valid, 2110 Invalid, 6653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [809 Valid, 5841 Invalid, 3 Unknown, 0 Unchecked, 16.5s Time] [2022-02-24 04:37:06,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7834 states. [2022-02-24 04:37:08,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7834 to 7063. [2022-02-24 04:37:08,280 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) [2022-02-24 04:37:08,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7063 states to 7063 states and 10582 transitions. [2022-02-24 04:37:08,301 INFO L78 Accepts]: Start accepts. Automaton has 7063 states and 10582 transitions. Word has length 68 [2022-02-24 04:37:08,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:37:08,301 INFO L470 AbstractCegarLoop]: Abstraction has 7063 states and 10582 transitions. [2022-02-24 04:37:08,302 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) [2022-02-24 04:37:08,302 INFO L276 IsEmpty]: Start isEmpty. Operand 7063 states and 10582 transitions. [2022-02-24 04:37:08,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-24 04:37:08,303 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:37:08,303 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:37:08,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-02-24 04:37:08,303 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:37:08,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:37:08,303 INFO L85 PathProgramCache]: Analyzing trace with hash -805010815, now seen corresponding path program 3 times [2022-02-24 04:37:08,303 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:37:08,303 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1867367021] [2022-02-24 04:37:08,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:37:08,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:37:08,313 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:37:08,313 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:37:08,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:08,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:37:08,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:08,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:37:08,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:09,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-24 04:37:09,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:09,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-02-24 04:37:09,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:09,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:37:09,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:09,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-24 04:37:09,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:09,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-02-24 04:37:09,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:09,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:37:09,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:09,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:37:09,314 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:37:09,314 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1867367021] [2022-02-24 04:37:09,314 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1867367021] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:37:09,314 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:37:09,314 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-02-24 04:37:09,314 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497203538] [2022-02-24 04:37:09,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:37:09,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-24 04:37:09,315 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:37:09,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-24 04:37:09,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2022-02-24 04:37:09,315 INFO L87 Difference]: Start difference. First operand 7063 states and 10582 transitions. Second operand has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 10 states have internal predecessors, (51), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 04:37:17,253 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:37:22,915 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:37:28,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:37:28,091 INFO L93 Difference]: Finished difference Result 14943 states and 22955 transitions. [2022-02-24 04:37:28,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-24 04:37:28,092 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 10 states have internal predecessors, (51), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 69 [2022-02-24 04:37:28,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:37:28,117 INFO L225 Difference]: With dead ends: 14943 [2022-02-24 04:37:28,117 INFO L226 Difference]: Without dead ends: 7855 [2022-02-24 04:37:28,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=205, Invalid=851, Unknown=0, NotChecked=0, Total=1056 [2022-02-24 04:37:28,141 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 2206 mSDsluCounter, 1194 mSDsCounter, 0 mSdLazyCounter, 5055 mSolverCounterSat, 988 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2236 SdHoareTripleChecker+Valid, 1894 SdHoareTripleChecker+Invalid, 6045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 988 IncrementalHoareTripleChecker+Valid, 5055 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.2s IncrementalHoareTripleChecker+Time [2022-02-24 04:37:28,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2236 Valid, 1894 Invalid, 6045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [988 Valid, 5055 Invalid, 2 Unknown, 0 Unchecked, 15.2s Time] [2022-02-24 04:37:28,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7855 states. [2022-02-24 04:37:29,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7855 to 7084. [2022-02-24 04:37:29,529 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) [2022-02-24 04:37:29,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7084 states to 7084 states and 10603 transitions. [2022-02-24 04:37:29,553 INFO L78 Accepts]: Start accepts. Automaton has 7084 states and 10603 transitions. Word has length 69 [2022-02-24 04:37:29,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:37:29,553 INFO L470 AbstractCegarLoop]: Abstraction has 7084 states and 10603 transitions. [2022-02-24 04:37:29,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 10 states have internal predecessors, (51), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 04:37:29,554 INFO L276 IsEmpty]: Start isEmpty. Operand 7084 states and 10603 transitions. [2022-02-24 04:37:29,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-24 04:37:29,555 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:37:29,555 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] [2022-02-24 04:37:29,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-02-24 04:37:29,555 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:37:29,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:37:29,555 INFO L85 PathProgramCache]: Analyzing trace with hash -226008452, now seen corresponding path program 4 times [2022-02-24 04:37:29,556 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:37:29,556 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [16761750] [2022-02-24 04:37:29,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:37:29,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:37:29,627 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:37:29,627 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:37:29,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:29,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:37:29,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:29,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:37:29,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:30,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-02-24 04:37:30,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:30,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:37:30,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:30,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:37:30,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:30,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-02-24 04:37:30,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:30,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-02-24 04:37:30,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:30,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:37:30,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:30,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:37:30,508 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:37:30,508 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [16761750] [2022-02-24 04:37:30,508 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [16761750] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:37:30,508 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:37:30,508 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-02-24 04:37:30,509 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131984957] [2022-02-24 04:37:30,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:37:30,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-24 04:37:30,509 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:37:30,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-24 04:37:30,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2022-02-24 04:37:30,509 INFO L87 Difference]: Start difference. First operand 7084 states and 10603 transitions. Second operand has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 04:37:41,984 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:37:47,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:37:47,383 INFO L93 Difference]: Finished difference Result 14984 states and 22996 transitions. [2022-02-24 04:37:47,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-24 04:37:47,384 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 69 [2022-02-24 04:37:47,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:37:47,411 INFO L225 Difference]: With dead ends: 14984 [2022-02-24 04:37:47,411 INFO L226 Difference]: Without dead ends: 7876 [2022-02-24 04:37:47,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=219, Invalid=971, Unknown=0, NotChecked=0, Total=1190 [2022-02-24 04:37:47,433 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 1999 mSDsluCounter, 1571 mSDsCounter, 0 mSdLazyCounter, 6099 mSolverCounterSat, 910 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2029 SdHoareTripleChecker+Valid, 2271 SdHoareTripleChecker+Invalid, 7010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 910 IncrementalHoareTripleChecker+Valid, 6099 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2022-02-24 04:37:47,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2029 Valid, 2271 Invalid, 7010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [910 Valid, 6099 Invalid, 1 Unknown, 0 Unchecked, 13.3s Time] [2022-02-24 04:37:47,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7876 states. [2022-02-24 04:37:48,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7876 to 7105. [2022-02-24 04:37:48,890 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) [2022-02-24 04:37:48,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7105 states to 7105 states and 10624 transitions. [2022-02-24 04:37:48,910 INFO L78 Accepts]: Start accepts. Automaton has 7105 states and 10624 transitions. Word has length 69 [2022-02-24 04:37:48,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:37:48,910 INFO L470 AbstractCegarLoop]: Abstraction has 7105 states and 10624 transitions. [2022-02-24 04:37:48,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 04:37:48,911 INFO L276 IsEmpty]: Start isEmpty. Operand 7105 states and 10624 transitions. [2022-02-24 04:37:48,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-24 04:37:48,912 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:37:48,912 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] [2022-02-24 04:37:48,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-02-24 04:37:48,913 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:37:48,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:37:48,913 INFO L85 PathProgramCache]: Analyzing trace with hash -271460884, now seen corresponding path program 5 times [2022-02-24 04:37:48,913 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:37:48,913 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1742103063] [2022-02-24 04:37:48,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:37:48,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:37:48,923 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:37:48,923 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:37:48,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:49,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:37:49,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:49,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:37:49,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:49,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-24 04:37:49,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:49,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-02-24 04:37:49,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:49,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:37:49,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:49,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-24 04:37:49,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:49,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-24 04:37:49,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:49,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:37:49,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:49,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:37:49,958 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:37:49,958 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1742103063] [2022-02-24 04:37:49,958 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1742103063] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:37:49,958 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:37:49,958 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-24 04:37:49,958 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79259260] [2022-02-24 04:37:49,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:37:49,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-24 04:37:49,959 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:37:49,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-24 04:37:49,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2022-02-24 04:37:49,959 INFO L87 Difference]: Start difference. First operand 7105 states and 10624 transitions. Second operand has 20 states, 20 states have (on average 2.6) internal successors, (52), 12 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) [2022-02-24 04:38:04,503 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:38:11,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:38:11,712 INFO L93 Difference]: Finished difference Result 15025 states and 23037 transitions. [2022-02-24 04:38:11,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-24 04:38:11,713 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.6) internal successors, (52), 12 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 [2022-02-24 04:38:11,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:38:11,738 INFO L225 Difference]: With dead ends: 15025 [2022-02-24 04:38:11,739 INFO L226 Difference]: Without dead ends: 7897 [2022-02-24 04:38:11,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=233, Invalid=1099, Unknown=0, NotChecked=0, Total=1332 [2022-02-24 04:38:11,762 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 1452 mSDsluCounter, 1978 mSDsCounter, 0 mSdLazyCounter, 8550 mSolverCounterSat, 633 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 2678 SdHoareTripleChecker+Invalid, 9184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 633 IncrementalHoareTripleChecker+Valid, 8550 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.0s IncrementalHoareTripleChecker+Time [2022-02-24 04:38:11,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1482 Valid, 2678 Invalid, 9184 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [633 Valid, 8550 Invalid, 1 Unknown, 0 Unchecked, 18.0s Time] [2022-02-24 04:38:11,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7897 states. [2022-02-24 04:38:13,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7897 to 7126. [2022-02-24 04:38:13,331 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) [2022-02-24 04:38:13,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7126 states to 7126 states and 10645 transitions. [2022-02-24 04:38:13,353 INFO L78 Accepts]: Start accepts. Automaton has 7126 states and 10645 transitions. Word has length 70 [2022-02-24 04:38:13,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:38:13,354 INFO L470 AbstractCegarLoop]: Abstraction has 7126 states and 10645 transitions. [2022-02-24 04:38:13,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.6) internal successors, (52), 12 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) [2022-02-24 04:38:13,354 INFO L276 IsEmpty]: Start isEmpty. Operand 7126 states and 10645 transitions. [2022-02-24 04:38:13,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-24 04:38:13,355 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:38:13,355 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] [2022-02-24 04:38:13,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-02-24 04:38:13,355 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:38:13,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:38:13,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1680486276, now seen corresponding path program 6 times [2022-02-24 04:38:13,356 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:38:13,356 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601766699] [2022-02-24 04:38:13,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:38:13,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:38:13,367 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:38:13,367 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:38:13,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:13,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:38:13,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:13,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:38:13,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:14,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-02-24 04:38:14,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:14,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-02-24 04:38:14,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:14,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:38:14,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:14,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-02-24 04:38:14,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:14,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-02-24 04:38:14,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:14,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:38:14,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:14,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:38:14,880 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:38:14,880 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1601766699] [2022-02-24 04:38:14,880 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1601766699] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:38:14,880 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:38:14,880 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-24 04:38:14,880 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621211610] [2022-02-24 04:38:14,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:38:14,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-24 04:38:14,881 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:38:14,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-24 04:38:14,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2022-02-24 04:38:14,881 INFO L87 Difference]: Start difference. First operand 7126 states and 10645 transitions. Second operand has 21 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 13 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) [2022-02-24 04:38:28,556 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:38:35,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:38:35,060 INFO L93 Difference]: Finished difference Result 15066 states and 23078 transitions. [2022-02-24 04:38:35,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-24 04:38:35,060 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 13 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 [2022-02-24 04:38:35,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:38:35,143 INFO L225 Difference]: With dead ends: 15066 [2022-02-24 04:38:35,144 INFO L226 Difference]: Without dead ends: 7918 [2022-02-24 04:38:35,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=247, Invalid=1235, Unknown=0, NotChecked=0, Total=1482 [2022-02-24 04:38:35,162 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 1638 mSDsluCounter, 1905 mSDsCounter, 0 mSdLazyCounter, 8242 mSolverCounterSat, 692 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1668 SdHoareTripleChecker+Valid, 2605 SdHoareTripleChecker+Invalid, 8935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 692 IncrementalHoareTripleChecker+Valid, 8242 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.1s IncrementalHoareTripleChecker+Time [2022-02-24 04:38:35,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1668 Valid, 2605 Invalid, 8935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [692 Valid, 8242 Invalid, 1 Unknown, 0 Unchecked, 16.1s Time] [2022-02-24 04:38:35,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7918 states. [2022-02-24 04:38:36,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7918 to 7147. [2022-02-24 04:38:36,712 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) [2022-02-24 04:38:36,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7147 states to 7147 states and 10666 transitions. [2022-02-24 04:38:36,730 INFO L78 Accepts]: Start accepts. Automaton has 7147 states and 10666 transitions. Word has length 71 [2022-02-24 04:38:36,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:38:36,731 INFO L470 AbstractCegarLoop]: Abstraction has 7147 states and 10666 transitions. [2022-02-24 04:38:36,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 13 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) [2022-02-24 04:38:36,731 INFO L276 IsEmpty]: Start isEmpty. Operand 7147 states and 10666 transitions. [2022-02-24 04:38:36,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-02-24 04:38:36,731 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:38:36,732 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] [2022-02-24 04:38:36,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-02-24 04:38:36,732 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:38:36,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:38:36,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1884366828, now seen corresponding path program 7 times [2022-02-24 04:38:36,732 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:38:36,732 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828363085] [2022-02-24 04:38:36,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:38:36,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:38:36,743 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:38:36,743 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:38:36,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:36,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:38:37,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:37,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:38:37,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:37,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-02-24 04:38:37,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:37,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-02-24 04:38:37,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:37,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:38:37,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:38,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-02-24 04:38:38,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:38,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-02-24 04:38:38,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:38,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:38:38,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:38,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:38:38,189 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:38:38,189 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828363085] [2022-02-24 04:38:38,189 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [828363085] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:38:38,189 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:38:38,189 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-02-24 04:38:38,189 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976182773] [2022-02-24 04:38:38,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:38:38,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-24 04:38:38,190 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:38:38,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-24 04:38:38,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2022-02-24 04:38:38,191 INFO L87 Difference]: Start difference. First operand 7147 states and 10666 transitions. Second operand has 22 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 14 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) [2022-02-24 04:38:53,226 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:39:00,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:39:00,049 INFO L93 Difference]: Finished difference Result 15107 states and 23119 transitions. [2022-02-24 04:39:00,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-24 04:39:00,050 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 14 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 [2022-02-24 04:39:00,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:39:00,084 INFO L225 Difference]: With dead ends: 15107 [2022-02-24 04:39:00,084 INFO L226 Difference]: Without dead ends: 7939 [2022-02-24 04:39:00,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=261, Invalid=1379, Unknown=0, NotChecked=0, Total=1640 [2022-02-24 04:39:00,114 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 2614 mSDsluCounter, 2027 mSDsCounter, 0 mSdLazyCounter, 7991 mSolverCounterSat, 1186 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2644 SdHoareTripleChecker+Valid, 2727 SdHoareTripleChecker+Invalid, 9178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1186 IncrementalHoareTripleChecker+Valid, 7991 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.3s IncrementalHoareTripleChecker+Time [2022-02-24 04:39:00,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2644 Valid, 2727 Invalid, 9178 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1186 Valid, 7991 Invalid, 1 Unknown, 0 Unchecked, 17.3s Time] [2022-02-24 04:39:00,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7939 states. [2022-02-24 04:39:01,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7939 to 7168. [2022-02-24 04:39:01,744 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) [2022-02-24 04:39:01,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7168 states to 7168 states and 10687 transitions. [2022-02-24 04:39:01,765 INFO L78 Accepts]: Start accepts. Automaton has 7168 states and 10687 transitions. Word has length 72 [2022-02-24 04:39:01,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:39:01,765 INFO L470 AbstractCegarLoop]: Abstraction has 7168 states and 10687 transitions. [2022-02-24 04:39:01,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 14 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) [2022-02-24 04:39:01,765 INFO L276 IsEmpty]: Start isEmpty. Operand 7168 states and 10687 transitions. [2022-02-24 04:39:01,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-02-24 04:39:01,766 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:39:01,766 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] [2022-02-24 04:39:01,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-02-24 04:39:01,766 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:39:01,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:39:01,767 INFO L85 PathProgramCache]: Analyzing trace with hash 725663356, now seen corresponding path program 8 times [2022-02-24 04:39:01,767 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:39:01,767 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1734578955] [2022-02-24 04:39:01,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:39:01,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:39:01,778 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:39:01,778 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:39:01,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:02,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:39:02,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:02,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:39:02,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:03,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:39:03,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:03,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-02-24 04:39:03,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:03,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:39:03,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:03,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-02-24 04:39:03,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:03,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-02-24 04:39:03,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:03,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:39:03,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:03,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:39:03,510 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:39:03,510 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1734578955] [2022-02-24 04:39:03,510 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1734578955] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:39:03,510 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:39:03,510 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-02-24 04:39:03,510 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025929469] [2022-02-24 04:39:03,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:39:03,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-24 04:39:03,510 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:39:03,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-24 04:39:03,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2022-02-24 04:39:03,511 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) [2022-02-24 04:39:16,196 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:39:18,348 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:39:20,472 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:39:28,479 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:39:35,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:39:35,962 INFO L93 Difference]: Finished difference Result 15148 states and 23160 transitions. [2022-02-24 04:39:35,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-24 04:39:35,963 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 [2022-02-24 04:39:35,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:39:35,994 INFO L225 Difference]: With dead ends: 15148 [2022-02-24 04:39:35,994 INFO L226 Difference]: Without dead ends: 7960 [2022-02-24 04:39:36,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=275, Invalid=1531, Unknown=0, NotChecked=0, Total=1806 [2022-02-24 04:39:36,022 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 2605 mSDsluCounter, 2298 mSDsCounter, 0 mSdLazyCounter, 9459 mSolverCounterSat, 1187 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2635 SdHoareTripleChecker+Valid, 2998 SdHoareTripleChecker+Invalid, 10650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1187 IncrementalHoareTripleChecker+Valid, 9459 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.7s IncrementalHoareTripleChecker+Time [2022-02-24 04:39:36,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2635 Valid, 2998 Invalid, 10650 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1187 Valid, 9459 Invalid, 4 Unknown, 0 Unchecked, 27.7s Time] [2022-02-24 04:39:36,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7960 states. [2022-02-24 04:39:37,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7960 to 7189. [2022-02-24 04:39:37,687 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) [2022-02-24 04:39:37,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7189 states to 7189 states and 10708 transitions. [2022-02-24 04:39:37,711 INFO L78 Accepts]: Start accepts. Automaton has 7189 states and 10708 transitions. Word has length 73 [2022-02-24 04:39:37,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:39:37,711 INFO L470 AbstractCegarLoop]: Abstraction has 7189 states and 10708 transitions. [2022-02-24 04:39:37,711 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) [2022-02-24 04:39:37,711 INFO L276 IsEmpty]: Start isEmpty. Operand 7189 states and 10708 transitions. [2022-02-24 04:39:37,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-24 04:39:37,712 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:39:37,712 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] [2022-02-24 04:39:37,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-02-24 04:39:37,712 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:39:37,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:39:37,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1764052097, now seen corresponding path program 4 times [2022-02-24 04:39:37,712 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:39:37,713 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1220117029] [2022-02-24 04:39:37,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:39:37,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:39:37,723 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:39:37,724 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:39:37,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:37,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:39:38,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:38,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:39:38,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:39,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-02-24 04:39:39,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:39,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-02-24 04:39:39,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:39,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:39:39,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:39,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-02-24 04:39:39,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:39,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-02-24 04:39:39,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:40,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:39:40,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:40,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:39:40,043 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:39:40,043 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1220117029] [2022-02-24 04:39:40,043 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1220117029] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:39:40,043 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:39:40,043 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-02-24 04:39:40,044 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503401278] [2022-02-24 04:39:40,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:39:40,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-24 04:39:40,044 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:39:40,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-24 04:39:40,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2022-02-24 04:39:40,045 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) [2022-02-24 04:40:00,134 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:40:08,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:40:08,771 INFO L93 Difference]: Finished difference Result 15189 states and 23201 transitions. [2022-02-24 04:40:08,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-24 04:40:08,772 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 [2022-02-24 04:40:08,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:40:08,805 INFO L225 Difference]: With dead ends: 15189 [2022-02-24 04:40:08,805 INFO L226 Difference]: Without dead ends: 7981 [2022-02-24 04:40:08,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=289, Invalid=1691, Unknown=0, NotChecked=0, Total=1980 [2022-02-24 04:40:08,829 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 1980 mSDsluCounter, 2307 mSDsCounter, 0 mSdLazyCounter, 9319 mSolverCounterSat, 915 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2010 SdHoareTripleChecker+Valid, 3007 SdHoareTripleChecker+Invalid, 10235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 915 IncrementalHoareTripleChecker+Valid, 9319 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.6s IncrementalHoareTripleChecker+Time [2022-02-24 04:40:08,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2010 Valid, 3007 Invalid, 10235 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [915 Valid, 9319 Invalid, 1 Unknown, 0 Unchecked, 22.6s Time] [2022-02-24 04:40:08,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7981 states. [2022-02-24 04:40:10,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7981 to 7210. [2022-02-24 04:40:10,525 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) [2022-02-24 04:40:10,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7210 states to 7210 states and 10729 transitions. [2022-02-24 04:40:10,547 INFO L78 Accepts]: Start accepts. Automaton has 7210 states and 10729 transitions. Word has length 75 [2022-02-24 04:40:10,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:40:10,547 INFO L470 AbstractCegarLoop]: Abstraction has 7210 states and 10729 transitions. [2022-02-24 04:40:10,547 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) [2022-02-24 04:40:10,547 INFO L276 IsEmpty]: Start isEmpty. Operand 7210 states and 10729 transitions. [2022-02-24 04:40:10,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-24 04:40:10,548 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:40:10,548 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] [2022-02-24 04:40:10,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-02-24 04:40:10,549 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:40:10,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:40:10,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1951912836, now seen corresponding path program 9 times [2022-02-24 04:40:10,549 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:40:10,549 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [805760131] [2022-02-24 04:40:10,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:40:10,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:40:10,560 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:40:10,560 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:40:10,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:10,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:40:10,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:10,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:40:10,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:12,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-02-24 04:40:12,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:12,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-24 04:40:12,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:12,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:40:12,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:12,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-02-24 04:40:12,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:12,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-02-24 04:40:12,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:13,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:40:13,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:13,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:40:13,063 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:40:13,063 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [805760131] [2022-02-24 04:40:13,063 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [805760131] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:40:13,063 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:40:13,063 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-02-24 04:40:13,063 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498126362] [2022-02-24 04:40:13,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:40:13,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-24 04:40:13,063 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:40:13,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-24 04:40:13,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2022-02-24 04:40:13,064 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) [2022-02-24 04:40:26,728 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:40:33,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:40:33,319 INFO L93 Difference]: Finished difference Result 15230 states and 23242 transitions. [2022-02-24 04:40:33,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-24 04:40:33,320 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 [2022-02-24 04:40:33,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:40:33,360 INFO L225 Difference]: With dead ends: 15230 [2022-02-24 04:40:33,360 INFO L226 Difference]: Without dead ends: 8002 [2022-02-24 04:40:33,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=303, Invalid=1859, Unknown=0, NotChecked=0, Total=2162 [2022-02-24 04:40:33,391 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 1595 mSDsluCounter, 1033 mSDsCounter, 0 mSdLazyCounter, 5044 mSolverCounterSat, 715 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1625 SdHoareTripleChecker+Valid, 1733 SdHoareTripleChecker+Invalid, 5760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 715 IncrementalHoareTripleChecker+Valid, 5044 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.8s IncrementalHoareTripleChecker+Time [2022-02-24 04:40:33,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1625 Valid, 1733 Invalid, 5760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [715 Valid, 5044 Invalid, 1 Unknown, 0 Unchecked, 13.8s Time] [2022-02-24 04:40:33,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8002 states. [2022-02-24 04:40:35,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8002 to 7231. [2022-02-24 04:40:35,771 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) [2022-02-24 04:40:35,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7231 states to 7231 states and 10750 transitions. [2022-02-24 04:40:35,792 INFO L78 Accepts]: Start accepts. Automaton has 7231 states and 10750 transitions. Word has length 75 [2022-02-24 04:40:35,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:40:35,792 INFO L470 AbstractCegarLoop]: Abstraction has 7231 states and 10750 transitions. [2022-02-24 04:40:35,792 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) [2022-02-24 04:40:35,793 INFO L276 IsEmpty]: Start isEmpty. Operand 7231 states and 10750 transitions. [2022-02-24 04:40:35,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-24 04:40:35,793 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:40:35,793 INFO L514 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:40:35,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-02-24 04:40:35,794 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:40:35,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:40:35,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1298741889, now seen corresponding path program 5 times [2022-02-24 04:40:35,794 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:40:35,794 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1461209762] [2022-02-24 04:40:35,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:40:35,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:40:35,805 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:40:35,805 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:40:35,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:36,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:40:36,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:36,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:40:36,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:38,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-02-24 04:40:38,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:38,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-02-24 04:40:38,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:38,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:40:38,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:39,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-24 04:40:39,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:39,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-02-24 04:40:39,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:39,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:40:39,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:39,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:40:39,329 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:40:39,329 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1461209762] [2022-02-24 04:40:39,329 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1461209762] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:40:39,329 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:40:39,329 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-02-24 04:40:39,330 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396384985] [2022-02-24 04:40:39,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:40:39,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-24 04:40:39,330 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:40:39,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-24 04:40:39,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=578, Unknown=0, NotChecked=0, Total=650 [2022-02-24 04:40:39,330 INFO L87 Difference]: Start difference. First operand 7231 states and 10750 transitions. Second operand has 26 states, 26 states have (on average 2.269230769230769) internal successors, (59), 18 states have internal predecessors, (59), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 04:41:06,331 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:41:18,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:41:18,264 INFO L93 Difference]: Finished difference Result 15271 states and 23283 transitions. [2022-02-24 04:41:18,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-24 04:41:18,265 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.269230769230769) internal successors, (59), 18 states have internal predecessors, (59), 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 77 [2022-02-24 04:41:18,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:41:18,300 INFO L225 Difference]: With dead ends: 15271 [2022-02-24 04:41:18,300 INFO L226 Difference]: Without dead ends: 8023 [2022-02-24 04:41:18,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=317, Invalid=2035, Unknown=0, NotChecked=0, Total=2352 [2022-02-24 04:41:18,325 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 2165 mSDsluCounter, 2986 mSDsCounter, 0 mSdLazyCounter, 12419 mSolverCounterSat, 927 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2195 SdHoareTripleChecker+Valid, 3686 SdHoareTripleChecker+Invalid, 13347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 927 IncrementalHoareTripleChecker+Valid, 12419 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.7s IncrementalHoareTripleChecker+Time [2022-02-24 04:41:18,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2195 Valid, 3686 Invalid, 13347 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [927 Valid, 12419 Invalid, 1 Unknown, 0 Unchecked, 31.7s Time] [2022-02-24 04:41:18,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8023 states. [2022-02-24 04:41:20,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8023 to 7252. [2022-02-24 04:41:20,097 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) [2022-02-24 04:41:20,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7252 states to 7252 states and 10771 transitions. [2022-02-24 04:41:20,118 INFO L78 Accepts]: Start accepts. Automaton has 7252 states and 10771 transitions. Word has length 77 [2022-02-24 04:41:20,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:41:20,118 INFO L470 AbstractCegarLoop]: Abstraction has 7252 states and 10771 transitions. [2022-02-24 04:41:20,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.269230769230769) internal successors, (59), 18 states have internal predecessors, (59), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 04:41:20,118 INFO L276 IsEmpty]: Start isEmpty. Operand 7252 states and 10771 transitions. [2022-02-24 04:41:20,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-02-24 04:41:20,119 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:41:20,119 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] [2022-02-24 04:41:20,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-02-24 04:41:20,120 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:41:20,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:41:20,120 INFO L85 PathProgramCache]: Analyzing trace with hash -58638863, now seen corresponding path program 6 times [2022-02-24 04:41:20,120 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:41:20,120 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [457716387] [2022-02-24 04:41:20,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:41:20,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:41:20,132 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:41:20,132 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:41:20,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:20,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:41:20,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:20,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:41:20,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:23,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-02-24 04:41:23,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:24,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-24 04:41:24,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:24,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:41:24,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:24,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-02-24 04:41:24,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:24,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-24 04:41:24,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:24,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:41:24,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:24,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:41:24,787 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:41:24,787 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [457716387] [2022-02-24 04:41:24,787 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [457716387] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:41:24,787 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:41:24,788 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-02-24 04:41:24,788 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889236281] [2022-02-24 04:41:24,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:41:24,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-24 04:41:24,788 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:41:24,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-24 04:41:24,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2022-02-24 04:41:24,789 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) [2022-02-24 04:41:43,588 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:41:50,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:41:50,751 INFO L93 Difference]: Finished difference Result 15312 states and 23324 transitions. [2022-02-24 04:41:50,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-24 04:41:50,752 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 [2022-02-24 04:41:50,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:41:50,790 INFO L225 Difference]: With dead ends: 15312 [2022-02-24 04:41:50,790 INFO L226 Difference]: Without dead ends: 8044 [2022-02-24 04:41:50,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=331, Invalid=2219, Unknown=0, NotChecked=0, Total=2550 [2022-02-24 04:41:50,825 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 2271 mSDsluCounter, 1194 mSDsCounter, 0 mSdLazyCounter, 5244 mSolverCounterSat, 1038 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2301 SdHoareTripleChecker+Valid, 1894 SdHoareTripleChecker+Invalid, 6283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1038 IncrementalHoareTripleChecker+Valid, 5244 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.1s IncrementalHoareTripleChecker+Time [2022-02-24 04:41:50,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2301 Valid, 1894 Invalid, 6283 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1038 Valid, 5244 Invalid, 1 Unknown, 0 Unchecked, 17.1s Time] [2022-02-24 04:41:50,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8044 states. [2022-02-24 04:41:52,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8044 to 7273. [2022-02-24 04:41:52,749 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) [2022-02-24 04:41:52,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7273 states to 7273 states and 10792 transitions. [2022-02-24 04:41:52,769 INFO L78 Accepts]: Start accepts. Automaton has 7273 states and 10792 transitions. Word has length 78 [2022-02-24 04:41:52,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:41:52,770 INFO L470 AbstractCegarLoop]: Abstraction has 7273 states and 10792 transitions. [2022-02-24 04:41:52,770 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) [2022-02-24 04:41:52,770 INFO L276 IsEmpty]: Start isEmpty. Operand 7273 states and 10792 transitions. [2022-02-24 04:41:52,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-02-24 04:41:52,771 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:41:52,771 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] [2022-02-24 04:41:52,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-02-24 04:41:52,771 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:41:52,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:41:52,771 INFO L85 PathProgramCache]: Analyzing trace with hash 520363500, now seen corresponding path program 10 times [2022-02-24 04:41:52,771 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:41:52,771 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [459361972] [2022-02-24 04:41:52,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:41:52,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:41:52,784 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:41:52,784 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:41:52,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:53,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:41:53,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:53,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:41:53,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:57,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-02-24 04:41:57,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:58,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-02-24 04:41:58,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:58,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:41:58,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:58,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-02-24 04:41:58,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:59,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-24 04:41:59,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:59,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:41:59,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:59,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:41:59,245 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:41:59,245 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [459361972] [2022-02-24 04:41:59,245 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [459361972] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:41:59,245 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:41:59,245 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-02-24 04:41:59,245 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804756431] [2022-02-24 04:41:59,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:41:59,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-24 04:41:59,246 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:41:59,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-24 04:41:59,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=678, Unknown=0, NotChecked=0, Total=756 [2022-02-24 04:41:59,247 INFO L87 Difference]: Start difference. First operand 7273 states and 10792 transitions. Second operand has 28 states, 28 states have (on average 2.142857142857143) internal successors, (60), 20 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) [2022-02-24 04:42:39,820 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:42:57,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:42:57,153 INFO L93 Difference]: Finished difference Result 15353 states and 23365 transitions. [2022-02-24 04:42:57,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-24 04:42:57,154 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.142857142857143) internal successors, (60), 20 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 [2022-02-24 04:42:57,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:42:57,191 INFO L225 Difference]: With dead ends: 15353 [2022-02-24 04:42:57,192 INFO L226 Difference]: Without dead ends: 8065 [2022-02-24 04:42:57,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=345, Invalid=2411, Unknown=0, NotChecked=0, Total=2756 [2022-02-24 04:42:57,217 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 2018 mSDsluCounter, 3635 mSDsCounter, 0 mSdLazyCounter, 15702 mSolverCounterSat, 922 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2048 SdHoareTripleChecker+Valid, 4335 SdHoareTripleChecker+Invalid, 16625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 922 IncrementalHoareTripleChecker+Valid, 15702 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.6s IncrementalHoareTripleChecker+Time [2022-02-24 04:42:57,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2048 Valid, 4335 Invalid, 16625 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [922 Valid, 15702 Invalid, 1 Unknown, 0 Unchecked, 46.6s Time] [2022-02-24 04:42:57,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8065 states. [2022-02-24 04:42:59,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8065 to 7294. [2022-02-24 04:42:59,137 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) [2022-02-24 04:42:59,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7294 states to 7294 states and 10813 transitions. [2022-02-24 04:42:59,161 INFO L78 Accepts]: Start accepts. Automaton has 7294 states and 10813 transitions. Word has length 78 [2022-02-24 04:42:59,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:42:59,161 INFO L470 AbstractCegarLoop]: Abstraction has 7294 states and 10813 transitions. [2022-02-24 04:42:59,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.142857142857143) internal successors, (60), 20 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) [2022-02-24 04:42:59,162 INFO L276 IsEmpty]: Start isEmpty. Operand 7294 states and 10813 transitions. [2022-02-24 04:42:59,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-02-24 04:42:59,162 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:42:59,163 INFO L514 BasicCegarLoop]: trace histogram [17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:42:59,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-02-24 04:42:59,163 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:42:59,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:42:59,163 INFO L85 PathProgramCache]: Analyzing trace with hash 2039386097, now seen corresponding path program 7 times [2022-02-24 04:42:59,163 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:42:59,163 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1041182898] [2022-02-24 04:42:59,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:42:59,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:42:59,176 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:42:59,176 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:42:59,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:59,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:42:59,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:59,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:42:59,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:06,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-24 04:43:06,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:07,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-24 04:43:07,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:07,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:43:07,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:07,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-02-24 04:43:07,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:08,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-02-24 04:43:08,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:08,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:43:08,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:08,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:43:08,712 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:43:08,712 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1041182898] [2022-02-24 04:43:08,712 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1041182898] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:43:08,712 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:43:08,712 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-02-24 04:43:08,712 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904683412] [2022-02-24 04:43:08,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:43:08,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-24 04:43:08,713 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:43:08,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-24 04:43:08,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=731, Unknown=0, NotChecked=0, Total=812 [2022-02-24 04:43:08,713 INFO L87 Difference]: Start difference. First operand 7294 states and 10813 transitions. Second operand has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 21 states have internal predecessors, (62), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 04:43:41,816 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:43:43,932 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:43:46,078 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:43:48,227 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:43:50,375 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:43:52,519 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:43:54,676 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:44:14,989 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:44:35,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:44:35,126 INFO L93 Difference]: Finished difference Result 15394 states and 23406 transitions. [2022-02-24 04:44:35,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-24 04:44:35,127 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 21 states have internal predecessors, (62), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 80 [2022-02-24 04:44:35,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:44:35,168 INFO L225 Difference]: With dead ends: 15394 [2022-02-24 04:44:35,168 INFO L226 Difference]: Without dead ends: 8086 [2022-02-24 04:44:35,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 17.1s TimeCoverageRelationStatistics Valid=359, Invalid=2611, Unknown=0, NotChecked=0, Total=2970 [2022-02-24 04:44:35,197 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 2551 mSDsluCounter, 3770 mSDsCounter, 0 mSdLazyCounter, 15558 mSolverCounterSat, 1174 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2581 SdHoareTripleChecker+Valid, 4470 SdHoareTripleChecker+Invalid, 16740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1174 IncrementalHoareTripleChecker+Valid, 15558 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 74.3s IncrementalHoareTripleChecker+Time [2022-02-24 04:44:35,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2581 Valid, 4470 Invalid, 16740 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1174 Valid, 15558 Invalid, 8 Unknown, 0 Unchecked, 74.3s Time] [2022-02-24 04:44:35,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8086 states. [2022-02-24 04:44:37,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8086 to 7315. [2022-02-24 04:44:37,113 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) [2022-02-24 04:44:37,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7315 states to 7315 states and 10834 transitions. [2022-02-24 04:44:37,137 INFO L78 Accepts]: Start accepts. Automaton has 7315 states and 10834 transitions. Word has length 80 [2022-02-24 04:44:37,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:44:37,137 INFO L470 AbstractCegarLoop]: Abstraction has 7315 states and 10834 transitions. [2022-02-24 04:44:37,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 21 states have internal predecessors, (62), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 04:44:37,137 INFO L276 IsEmpty]: Start isEmpty. Operand 7315 states and 10834 transitions. [2022-02-24 04:44:37,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-02-24 04:44:37,138 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:44:37,138 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] [2022-02-24 04:44:37,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-02-24 04:44:37,138 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:44:37,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:44:37,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1676578836, now seen corresponding path program 11 times [2022-02-24 04:44:37,139 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:44:37,139 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1964675950] [2022-02-24 04:44:37,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:44:37,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:44:37,151 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:44:37,151 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:44:37,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:44:37,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:44:37,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:44:37,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:44:37,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:44:47,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-02-24 04:44:47,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:44:48,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-02-24 04:44:48,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:44:48,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:44:48,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:44:49,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-02-24 04:44:49,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:44:49,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-02-24 04:44:49,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:44:50,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:44:50,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:44:50,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:44:50,453 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:44:50,453 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1964675950] [2022-02-24 04:44:50,453 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1964675950] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:44:50,453 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:44:50,453 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-02-24 04:44:50,453 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352101940] [2022-02-24 04:44:50,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:44:50,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-24 04:44:50,453 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:44:50,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-24 04:44:50,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=786, Unknown=0, NotChecked=0, Total=870 [2022-02-24 04:44:50,454 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) [2022-02-24 04:45:16,452 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:45:23,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:45:23,042 INFO L93 Difference]: Finished difference Result 15435 states and 23447 transitions. [2022-02-24 04:45:23,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-24 04:45:23,043 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 80 [2022-02-24 04:45:23,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:45:23,081 INFO L225 Difference]: With dead ends: 15435 [2022-02-24 04:45:23,081 INFO L226 Difference]: Without dead ends: 8107 [2022-02-24 04:45:23,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 25.2s TimeCoverageRelationStatistics Valid=373, Invalid=2819, Unknown=0, NotChecked=0, Total=3192 [2022-02-24 04:45:23,107 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 2280 mSDsluCounter, 1020 mSDsCounter, 0 mSdLazyCounter, 4707 mSolverCounterSat, 1083 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2310 SdHoareTripleChecker+Valid, 1720 SdHoareTripleChecker+Invalid, 5791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1083 IncrementalHoareTripleChecker+Valid, 4707 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time [2022-02-24 04:45:23,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2310 Valid, 1720 Invalid, 5791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1083 Valid, 4707 Invalid, 1 Unknown, 0 Unchecked, 16.2s Time] [2022-02-24 04:45:23,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8107 states. [2022-02-24 04:45:25,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8107 to 7336. [2022-02-24 04:45:25,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7336 states, 5932 states have (on average 1.4212744436952125) internal successors, (8431), 6082 states have internal predecessors, (8431), 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) [2022-02-24 04:45:25,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7336 states to 7336 states and 10855 transitions. [2022-02-24 04:45:25,079 INFO L78 Accepts]: Start accepts. Automaton has 7336 states and 10855 transitions. Word has length 80 [2022-02-24 04:45:25,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:45:25,088 INFO L470 AbstractCegarLoop]: Abstraction has 7336 states and 10855 transitions. [2022-02-24 04:45:25,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2022-02-24 04:45:25,089 INFO L276 IsEmpty]: Start isEmpty. Operand 7336 states and 10855 transitions. [2022-02-24 04:45:25,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-02-24 04:45:25,089 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:45:25,090 INFO L514 BasicCegarLoop]: trace histogram [19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:45:25,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-02-24 04:45:25,090 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:45:25,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:45:25,090 INFO L85 PathProgramCache]: Analyzing trace with hash -393256463, now seen corresponding path program 8 times [2022-02-24 04:45:25,090 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:45:25,090 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1458940770] [2022-02-24 04:45:25,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:45:25,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:45:25,102 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:45:25,102 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:45:25,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:25,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:45:25,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:25,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:45:25,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:37,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-24 04:45:37,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:38,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-02-24 04:45:38,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:38,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:45:38,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:39,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-02-24 04:45:39,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:40,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-02-24 04:45:40,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:40,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:45:40,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:40,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:45:40,784 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:45:40,784 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1458940770] [2022-02-24 04:45:40,784 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1458940770] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:45:40,784 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:45:40,784 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-02-24 04:45:40,784 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433854944] [2022-02-24 04:45:40,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:45:40,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-24 04:45:40,785 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:45:40,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-24 04:45:40,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=843, Unknown=0, NotChecked=0, Total=930 [2022-02-24 04:45:40,785 INFO L87 Difference]: Start difference. First operand 7336 states and 10855 transitions. Second operand has 31 states, 31 states have (on average 2.064516129032258) internal successors, (64), 23 states have internal predecessors, (64), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 04:46:24,099 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 []