/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-b030c9e [2022-03-20 23:55:48,872 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 23:55:48,874 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 23:55:48,898 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-20 23:55:48,898 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-20 23:55:48,899 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-20 23:55:48,900 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-20 23:55:48,902 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-20 23:55:48,903 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-20 23:55:48,904 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-20 23:55:48,905 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-20 23:55:48,906 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-20 23:55:48,906 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-20 23:55:48,907 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-20 23:55:48,908 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-20 23:55:48,909 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-20 23:55:48,910 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-20 23:55:48,911 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-20 23:55:48,913 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-20 23:55:48,915 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-20 23:55:48,916 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-20 23:55:48,917 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-20 23:55:48,918 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-20 23:55:48,919 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-20 23:55:48,920 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-20 23:55:48,922 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-20 23:55:48,929 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 23:55:48,929 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 23:55:48,930 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 23:55:48,930 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-03-20 23:55:48,937 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 23:55:48,938 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 23:55:48,939 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 23:55:48,939 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 23:55:48,939 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 23:55:48,939 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 23:55:48,939 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 23:55:48,940 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 23:55:48,940 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 23:55:48,940 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 23:55:48,940 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 23:55:48,940 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 23:55:48,940 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 23:55:48,941 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-20 23:55:48,941 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 23:55:48,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 23:55:48,941 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 23:55:48,941 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-20 23:55:48,942 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-20 23:55:48,942 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-20 23:55:48,942 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-20 23:55:48,942 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-03-20 23:55:48,942 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 23:55:49,110 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 23:55:49,131 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 23:55:49,133 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 23:55:49,134 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 23:55:49,134 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 23:55:49,135 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers/floppy.i.cil-1.c [2022-03-20 23:55:49,181 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e395d254b/dd6c73fcddf94180a9ed87cc46516670/FLAGffd91e305 [2022-03-20 23:55:49,768 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 23:55:49,768 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/floppy.i.cil-1.c [2022-03-20 23:55:49,814 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e395d254b/dd6c73fcddf94180a9ed87cc46516670/FLAGffd91e305 [2022-03-20 23:55:49,917 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e395d254b/dd6c73fcddf94180a9ed87cc46516670 [2022-03-20 23:55:49,919 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 23:55:49,920 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-20 23:55:49,921 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 23:55:49,921 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 23:55:49,925 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 23:55:49,925 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 11:55:49" (1/1) ... [2022-03-20 23:55:49,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7df69979 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 11:55:49, skipping insertion in model container [2022-03-20 23:55:49,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 11:55:49" (1/1) ... [2022-03-20 23:55:49,933 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 23:55:50,010 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 23:55:50,472 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] [2022-03-20 23:55:50,877 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 23:55:50,956 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 23:55:51,022 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] [2022-03-20 23:55:51,258 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 23:55:51,299 INFO L208 MainTranslator]: Completed translation [2022-03-20 23:55:51,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 11:55:51 WrapperNode [2022-03-20 23:55:51,299 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 23:55:51,300 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 23:55:51,300 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 23:55:51,301 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 23:55:51,310 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 11:55:51" (1/1) ... [2022-03-20 23:55:51,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 11:55:51" (1/1) ... [2022-03-20 23:55:51,389 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 11:55:51" (1/1) ... [2022-03-20 23:55:51,389 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 11:55:51" (1/1) ... [2022-03-20 23:55:51,543 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 11:55:51" (1/1) ... [2022-03-20 23:55:51,575 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 11:55:51" (1/1) ... [2022-03-20 23:55:51,603 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 11:55:51" (1/1) ... [2022-03-20 23:55:51,634 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 23:55:51,634 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 23:55:51,635 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 23:55:51,635 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 23:55:51,636 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 11:55:51" (1/1) ... [2022-03-20 23:55:51,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 23:55:51,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 23:55:51,664 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) [2022-03-20 23:55:51,694 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 [2022-03-20 23:55:51,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 23:55:51,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 23:55:51,707 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 23:55:51,708 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedExchange [2022-03-20 23:55:51,708 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-03-20 23:55:51,708 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-03-20 23:55:51,708 INFO L138 BoogieDeclarations]: Found implementation of procedure DriverEntry [2022-03-20 23:55:51,708 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyUnload [2022-03-20 23:55:51,708 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyAddDevice [2022-03-20 23:55:51,708 INFO L138 BoogieDeclarations]: Found implementation of procedure FlConfigCallBack [2022-03-20 23:55:51,708 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAcpiConfigureFloppy [2022-03-20 23:55:51,709 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2022-03-20 23:55:51,709 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2022-03-20 23:55:51,709 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyDeviceControl [2022-03-20 23:55:51,710 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnp [2022-03-20 23:55:51,710 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyStartDevice [2022-03-20 23:55:51,710 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2022-03-20 23:55:51,710 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPower [2022-03-20 23:55:51,710 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyReadWrite [2022-03-20 23:55:51,710 INFO L138 BoogieDeclarations]: Found implementation of procedure FlInterpretError [2022-03-20 23:55:51,711 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFinishOperation [2022-03-20 23:55:51,711 INFO L138 BoogieDeclarations]: Found implementation of procedure FlStartDrive [2022-03-20 23:55:51,711 INFO L138 BoogieDeclarations]: Found implementation of procedure FlDatarateSpecifyConfigure [2022-03-20 23:55:51,711 INFO L138 BoogieDeclarations]: Found implementation of procedure FlRecalibrateDrive [2022-03-20 23:55:51,711 INFO L138 BoogieDeclarations]: Found implementation of procedure FlDetermineMediaType [2022-03-20 23:55:51,711 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAllocateIoBuffer [2022-03-20 23:55:51,711 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFreeIoBuffer [2022-03-20 23:55:51,711 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyThread [2022-03-20 23:55:51,711 INFO L138 BoogieDeclarations]: Found implementation of procedure FlConsolidateMediaTypeWithBootSector [2022-03-20 23:55:51,711 INFO L138 BoogieDeclarations]: Found implementation of procedure FlCheckBootSector [2022-03-20 23:55:51,712 INFO L138 BoogieDeclarations]: Found implementation of procedure FlReadWriteTrack [2022-03-20 23:55:51,712 INFO L138 BoogieDeclarations]: Found implementation of procedure FlReadWrite [2022-03-20 23:55:51,712 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFormat [2022-03-20 23:55:51,712 INFO L138 BoogieDeclarations]: Found implementation of procedure FlCheckFormatParameters [2022-03-20 23:55:51,712 INFO L138 BoogieDeclarations]: Found implementation of procedure FlIssueCommand [2022-03-20 23:55:51,712 INFO L138 BoogieDeclarations]: Found implementation of procedure FlInitializeControllerHardware [2022-03-20 23:55:51,712 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2022-03-20 23:55:51,712 INFO L138 BoogieDeclarations]: Found implementation of procedure FlHdbit [2022-03-20 23:55:51,712 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyQueueRequest [2022-03-20 23:55:51,712 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCancelQueuedRequest [2022-03-20 23:55:51,712 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2022-03-20 23:55:51,712 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-03-20 23:55:51,713 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 23:55:51,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAcquireFastMutex [2022-03-20 23:55:51,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ExReleaseFastMutex [2022-03-20 23:55:51,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2022-03-20 23:55:51,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ExFreePool [2022-03-20 23:55:51,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertHeadList [2022-03-20 23:55:51,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertTailList [2022-03-20 23:55:51,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedRemoveHeadList [2022-03-20 23:55:51,713 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAllocateMdl [2022-03-20 23:55:51,713 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAttachDeviceToDeviceStack [2022-03-20 23:55:51,713 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildAsynchronousFsdRequest [2022-03-20 23:55:51,713 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2022-03-20 23:55:51,713 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateDevice [2022-03-20 23:55:51,714 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateSymbolicLink [2022-03-20 23:55:51,714 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteDevice [2022-03-20 23:55:51,714 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2022-03-20 23:55:51,714 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDetachDevice [2022-03-20 23:55:51,714 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeIrp [2022-03-20 23:55:51,714 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeMdl [2022-03-20 23:55:51,714 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2022-03-20 23:55:51,714 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2022-03-20 23:55:51,714 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2022-03-20 23:55:51,714 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReleaseCancelSpinLock [2022-03-20 23:55:51,714 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-03-20 23:55:51,714 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetHardErrorOrVerifyDevice [2022-03-20 23:55:51,715 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-03-20 23:55:51,715 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-03-20 23:55:51,715 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-03-20 23:55:51,715 INFO L138 BoogieDeclarations]: Found implementation of procedure KeAcquireSpinLockRaiseToDpc [2022-03-20 23:55:51,715 INFO L138 BoogieDeclarations]: Found implementation of procedure KeDelayExecutionThread [2022-03-20 23:55:51,715 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeEvent [2022-03-20 23:55:51,716 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSemaphore [2022-03-20 23:55:51,716 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSpinLock [2022-03-20 23:55:51,716 INFO L138 BoogieDeclarations]: Found implementation of procedure KeReleaseSemaphore [2022-03-20 23:55:51,716 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-03-20 23:55:51,716 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-03-20 23:55:51,716 INFO L138 BoogieDeclarations]: Found implementation of procedure MmAllocateContiguousMemory [2022-03-20 23:55:51,716 INFO L138 BoogieDeclarations]: Found implementation of procedure MmFreeContiguousMemory [2022-03-20 23:55:51,716 INFO L138 BoogieDeclarations]: Found implementation of procedure MmMapLockedPagesSpecifyCache [2022-03-20 23:55:51,717 INFO L138 BoogieDeclarations]: Found implementation of procedure MmPageEntireDriver [2022-03-20 23:55:51,717 INFO L138 BoogieDeclarations]: Found implementation of procedure MmResetDriverPaging [2022-03-20 23:55:51,717 INFO L138 BoogieDeclarations]: Found implementation of procedure MmUnlockPages [2022-03-20 23:55:51,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2022-03-20 23:55:51,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ObfDereferenceObject [2022-03-20 23:55:51,718 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-03-20 23:55:51,718 INFO L138 BoogieDeclarations]: Found implementation of procedure PoStartNextPowerIrp [2022-03-20 23:55:51,718 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2022-03-20 23:55:51,719 INFO L138 BoogieDeclarations]: Found implementation of procedure PsTerminateSystemThread [2022-03-20 23:55:51,719 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlAnsiStringToUnicodeString [2022-03-20 23:55:51,719 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCompareMemory [2022-03-20 23:55:51,719 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCopyUnicodeString [2022-03-20 23:55:51,719 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlDeleteRegistryValue [2022-03-20 23:55:51,719 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlFreeUnicodeString [2022-03-20 23:55:51,719 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitString [2022-03-20 23:55:51,719 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitUnicodeString [2022-03-20 23:55:51,719 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlQueryRegistryValues [2022-03-20 23:55:51,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-03-20 23:55:51,720 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-03-20 23:55:51,720 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-03-20 23:55:51,720 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-03-20 23:55:51,720 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 23:55:51,720 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 23:55:51,720 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 23:55:51,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 23:55:51,720 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-03-20 23:55:51,720 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-20 23:55:51,720 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-03-20 23:55:51,721 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2022-03-20 23:55:51,721 INFO L130 BoogieDeclarations]: Found specification of procedure swprintf [2022-03-20 23:55:51,721 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2022-03-20 23:55:51,721 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2022-03-20 23:55:51,722 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2022-03-20 23:55:51,722 INFO L130 BoogieDeclarations]: Found specification of procedure RtlQueryRegistryValues [2022-03-20 23:55:51,722 INFO L130 BoogieDeclarations]: Found specification of procedure RtlDeleteRegistryValue [2022-03-20 23:55:51,722 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitString [2022-03-20 23:55:51,722 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitUnicodeString [2022-03-20 23:55:51,723 INFO L130 BoogieDeclarations]: Found specification of procedure RtlAnsiStringToUnicodeString [2022-03-20 23:55:51,723 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCopyUnicodeString [2022-03-20 23:55:51,723 INFO L130 BoogieDeclarations]: Found specification of procedure RtlFreeUnicodeString [2022-03-20 23:55:51,723 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCompareMemory [2022-03-20 23:55:51,723 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedExchange [2022-03-20 23:55:51,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 23:55:51,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 23:55:51,723 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeEvent [2022-03-20 23:55:51,724 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-03-20 23:55:51,724 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSemaphore [2022-03-20 23:55:51,724 INFO L130 BoogieDeclarations]: Found specification of procedure KeReleaseSemaphore [2022-03-20 23:55:51,724 INFO L130 BoogieDeclarations]: Found specification of procedure KeDelayExecutionThread [2022-03-20 23:55:51,724 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-03-20 23:55:51,724 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSpinLock [2022-03-20 23:55:51,724 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2022-03-20 23:55:51,724 INFO L130 BoogieDeclarations]: Found specification of procedure ExFreePool [2022-03-20 23:55:51,724 INFO L130 BoogieDeclarations]: Found specification of procedure ExAcquireFastMutex [2022-03-20 23:55:51,724 INFO L130 BoogieDeclarations]: Found specification of procedure ExReleaseFastMutex [2022-03-20 23:55:51,725 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertHeadList [2022-03-20 23:55:51,725 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertTailList [2022-03-20 23:55:51,725 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedRemoveHeadList [2022-03-20 23:55:51,726 INFO L130 BoogieDeclarations]: Found specification of procedure MmUnlockPages [2022-03-20 23:55:51,727 INFO L130 BoogieDeclarations]: Found specification of procedure MmMapLockedPagesSpecifyCache [2022-03-20 23:55:51,729 INFO L130 BoogieDeclarations]: Found specification of procedure MmAllocateContiguousMemory [2022-03-20 23:55:51,729 INFO L130 BoogieDeclarations]: Found specification of procedure MmFreeContiguousMemory [2022-03-20 23:55:51,734 INFO L130 BoogieDeclarations]: Found specification of procedure MmResetDriverPaging [2022-03-20 23:55:51,734 INFO L130 BoogieDeclarations]: Found specification of procedure MmPageEntireDriver [2022-03-20 23:55:51,734 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2022-03-20 23:55:51,734 INFO L130 BoogieDeclarations]: Found specification of procedure PsTerminateSystemThread [2022-03-20 23:55:51,734 INFO L130 BoogieDeclarations]: Found specification of procedure IoAllocateMdl [2022-03-20 23:55:51,734 INFO L130 BoogieDeclarations]: Found specification of procedure IoAttachDeviceToDeviceStack [2022-03-20 23:55:51,734 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildAsynchronousFsdRequest [2022-03-20 23:55:51,735 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2022-03-20 23:55:51,735 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-03-20 23:55:51,735 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-03-20 23:55:51,735 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateDevice [2022-03-20 23:55:51,735 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateSymbolicLink [2022-03-20 23:55:51,735 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteDevice [2022-03-20 23:55:51,735 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2022-03-20 23:55:51,735 INFO L130 BoogieDeclarations]: Found specification of procedure IoDetachDevice [2022-03-20 23:55:51,735 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeIrp [2022-03-20 23:55:51,735 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeMdl [2022-03-20 23:55:51,735 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2022-03-20 23:55:51,735 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2022-03-20 23:55:51,735 INFO L130 BoogieDeclarations]: Found specification of procedure IoReleaseCancelSpinLock [2022-03-20 23:55:51,735 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetHardErrorOrVerifyDevice [2022-03-20 23:55:51,735 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2022-03-20 23:55:51,736 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-03-20 23:55:51,736 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-03-20 23:55:51,736 INFO L130 BoogieDeclarations]: Found specification of procedure PoStartNextPowerIrp [2022-03-20 23:55:51,736 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2022-03-20 23:55:51,736 INFO L130 BoogieDeclarations]: Found specification of procedure ObfDereferenceObject [2022-03-20 23:55:51,736 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-03-20 23:55:51,736 INFO L130 BoogieDeclarations]: Found specification of procedure DriverEntry [2022-03-20 23:55:51,736 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyUnload [2022-03-20 23:55:51,736 INFO L130 BoogieDeclarations]: Found specification of procedure FlConfigCallBack [2022-03-20 23:55:51,736 INFO L130 BoogieDeclarations]: Found specification of procedure FlInitializeControllerHardware [2022-03-20 23:55:51,736 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2022-03-20 23:55:51,736 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyDeviceControl [2022-03-20 23:55:51,736 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyReadWrite [2022-03-20 23:55:51,736 INFO L130 BoogieDeclarations]: Found specification of procedure FlRecalibrateDrive [2022-03-20 23:55:51,736 INFO L130 BoogieDeclarations]: Found specification of procedure FlDatarateSpecifyConfigure [2022-03-20 23:55:51,736 INFO L130 BoogieDeclarations]: Found specification of procedure FlStartDrive [2022-03-20 23:55:51,737 INFO L130 BoogieDeclarations]: Found specification of procedure FlFinishOperation [2022-03-20 23:55:51,737 INFO L130 BoogieDeclarations]: Found specification of procedure FlDetermineMediaType [2022-03-20 23:55:51,737 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyThread [2022-03-20 23:55:51,737 INFO L130 BoogieDeclarations]: Found specification of procedure FlReadWrite [2022-03-20 23:55:51,737 INFO L130 BoogieDeclarations]: Found specification of procedure FlFormat [2022-03-20 23:55:51,737 INFO L130 BoogieDeclarations]: Found specification of procedure FlIssueCommand [2022-03-20 23:55:51,737 INFO L130 BoogieDeclarations]: Found specification of procedure FlCheckFormatParameters [2022-03-20 23:55:51,737 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2022-03-20 23:55:51,737 INFO L130 BoogieDeclarations]: Found specification of procedure FlInterpretError [2022-03-20 23:55:51,737 INFO L130 BoogieDeclarations]: Found specification of procedure FlAllocateIoBuffer [2022-03-20 23:55:51,737 INFO L130 BoogieDeclarations]: Found specification of procedure FlFreeIoBuffer [2022-03-20 23:55:51,737 INFO L130 BoogieDeclarations]: Found specification of procedure FlConsolidateMediaTypeWithBootSector [2022-03-20 23:55:51,737 INFO L130 BoogieDeclarations]: Found specification of procedure FlCheckBootSector [2022-03-20 23:55:51,738 INFO L130 BoogieDeclarations]: Found specification of procedure FlReadWriteTrack [2022-03-20 23:55:51,738 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2022-03-20 23:55:51,738 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyAddDevice [2022-03-20 23:55:51,738 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnp [2022-03-20 23:55:51,738 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPower [2022-03-20 23:55:51,738 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2022-03-20 23:55:51,738 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyQueueRequest [2022-03-20 23:55:51,738 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyStartDevice [2022-03-20 23:55:51,738 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2022-03-20 23:55:51,738 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCancelQueuedRequest [2022-03-20 23:55:51,738 INFO L130 BoogieDeclarations]: Found specification of procedure FlAcpiConfigureFloppy [2022-03-20 23:55:51,738 INFO L130 BoogieDeclarations]: Found specification of procedure FlHdbit [2022-03-20 23:55:51,738 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-03-20 23:55:51,738 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-03-20 23:55:51,739 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-03-20 23:55:51,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-03-20 23:55:51,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-03-20 23:55:51,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-03-20 23:55:51,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-20 23:55:51,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 23:55:51,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-03-20 23:55:51,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-03-20 23:55:51,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-03-20 23:55:51,739 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-03-20 23:55:51,739 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 23:55:51,739 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-03-20 23:55:51,739 INFO L130 BoogieDeclarations]: Found specification of procedure KeAcquireSpinLockRaiseToDpc [2022-03-20 23:55:51,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 23:55:51,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 23:55:51,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 23:55:51,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-03-20 23:55:51,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-03-20 23:55:51,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-03-20 23:55:51,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-03-20 23:55:52,349 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 23:55:52,352 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 23:55:52,377 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 23:55:52,435 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 23:55:52,435 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 23:55:52,436 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 23:55:52,442 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 23:55:52,442 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 23:55:54,609 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 23:55:54,615 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 23:55:54,615 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 23:55:54,615 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 23:55:54,624 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 23:55:54,624 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 23:55:54,627 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 23:55:54,634 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 23:55:54,634 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 23:55:54,666 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 23:55:54,671 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 23:55:54,671 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 23:55:54,672 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 23:55:54,679 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 23:55:54,680 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 23:55:54,680 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 23:55:54,689 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 23:55:54,689 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 23:55:54,748 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 23:55:54,802 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2022-03-20 23:55:54,802 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2022-03-20 23:55:54,865 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 23:55:54,870 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 23:55:54,870 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 23:55:54,870 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 23:55:54,875 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 23:55:54,875 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 23:55:54,875 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 23:55:54,883 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 23:55:54,883 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 23:55:54,895 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 23:55:54,901 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 23:55:54,901 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 23:55:54,901 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 23:55:54,906 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 23:55:54,906 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 23:56:02,749 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 23:56:02,768 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-03-20 23:56:02,768 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-03-20 23:56:02,826 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 23:56:03,183 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !false; [2022-03-20 23:56:03,183 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##37: assume false; [2022-03-20 23:56:03,592 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 23:56:03,596 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 23:56:03,596 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 23:56:03,663 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 23:56:03,694 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2022-03-20 23:56:03,694 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2022-03-20 23:56:03,697 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 23:56:03,843 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-03-20 23:56:03,843 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-03-20 23:56:03,844 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 23:56:03,897 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2022-03-20 23:56:03,897 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2022-03-20 23:56:14,922 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 23:56:14,926 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 23:56:14,926 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 23:56:14,992 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 23:56:14,995 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 23:56:14,995 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 23:56:15,016 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 23:56:17,034 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume !false; [2022-03-20 23:56:17,035 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume false; [2022-03-20 23:56:17,076 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 23:56:17,330 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##48: assume !false; [2022-03-20 23:56:17,330 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##47: assume false; [2022-03-20 23:56:17,332 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 23:56:17,349 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-03-20 23:56:17,349 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-03-20 23:56:17,350 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 23:56:17,384 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2022-03-20 23:56:17,384 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2022-03-20 23:56:17,387 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 23:56:17,396 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-03-20 23:56:17,396 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-03-20 23:56:17,446 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 23:56:17,451 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 23:56:17,451 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 23:56:17,461 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 23:56:17,466 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 23:56:17,466 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 23:56:17,467 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 23:56:17,536 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##46: assume !false; [2022-03-20 23:56:17,536 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##45: assume false; [2022-03-20 23:56:17,582 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 23:56:19,971 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume !false; [2022-03-20 23:56:19,971 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##13: assume false; [2022-03-20 23:56:20,013 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 23:56:20,040 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 23:56:20,040 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2022-03-20 23:56:20,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 11:56:20 BoogieIcfgContainer [2022-03-20 23:56:20,044 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 23:56:20,047 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 23:56:20,047 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 23:56:20,053 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 23:56:20,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 11:55:49" (1/3) ... [2022-03-20 23:56:20,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55b57a41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 11:56:20, skipping insertion in model container [2022-03-20 23:56:20,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 11:55:51" (2/3) ... [2022-03-20 23:56:20,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55b57a41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 11:56:20, skipping insertion in model container [2022-03-20 23:56:20,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 11:56:20" (3/3) ... [2022-03-20 23:56:20,056 INFO L111 eAbstractionObserver]: Analyzing ICFG floppy.i.cil-1.c [2022-03-20 23:56:20,059 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-20 23:56:20,059 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 23:56:20,098 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 23:56:20,103 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, 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 [2022-03-20 23:56:20,103 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 23:56:20,139 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) [2022-03-20 23:56:20,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-03-20 23:56:20,146 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 23:56:20,147 INFO L499 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] [2022-03-20 23:56:20,147 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 23:56:20,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 23:56:20,151 INFO L85 PathProgramCache]: Analyzing trace with hash 760330439, now seen corresponding path program 1 times [2022-03-20 23:56:20,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 23:56:20,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [602905414] [2022-03-20 23:56:20,168 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 23:56:20,168 INFO L85 PathProgramCache]: Analyzing trace with hash 760330439, now seen corresponding path program 2 times [2022-03-20 23:56:20,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 23:56:20,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253674720] [2022-03-20 23:56:20,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 23:56:20,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 23:56:20,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:56:20,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 23:56:20,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:56:21,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 23:56:21,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:56:21,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 23:56:21,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:56:21,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 23:56:21,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:56:21,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 23:56:21,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:56:21,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 23:56:21,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 23:56:21,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253674720] [2022-03-20 23:56:21,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253674720] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 23:56:21,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 23:56:21,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-20 23:56:21,248 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 23:56:21,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [602905414] [2022-03-20 23:56:21,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [602905414] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 23:56:21,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 23:56:21,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-20 23:56:21,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475771672] [2022-03-20 23:56:21,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 23:56:21,252 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-20 23:56:21,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 23:56:21,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-20 23:56:21,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-20 23:56:21,287 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) [2022-03-20 23:56:26,539 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 [] [2022-03-20 23:56:28,591 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 23:56:32,871 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 23:56:33,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 23:56:33,758 INFO L93 Difference]: Finished difference Result 1399 states and 2144 transitions. [2022-03-20 23:56:33,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-20 23:56:33,760 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 [2022-03-20 23:56:33,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 23:56:33,777 INFO L225 Difference]: With dead ends: 1399 [2022-03-20 23:56:33,777 INFO L226 Difference]: Without dead ends: 833 [2022-03-20 23:56:33,786 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-03-20 23:56:33,789 INFO L913 BasicCegarLoop]: 728 mSDtfsCounter, 1822 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 2435 mSolverCounterSat, 917 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1850 SdHoareTripleChecker+Valid, 1207 SdHoareTripleChecker+Invalid, 3355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 917 IncrementalHoareTripleChecker+Valid, 2435 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2022-03-20 23:56:33,790 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1850 Valid, 1207 Invalid, 3355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [917 Valid, 2435 Invalid, 3 Unknown, 0 Unchecked, 11.3s Time] [2022-03-20 23:56:33,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2022-03-20 23:56:33,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 651. [2022-03-20 23:56:33,946 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) [2022-03-20 23:56:33,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 906 transitions. [2022-03-20 23:56:33,953 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 906 transitions. Word has length 37 [2022-03-20 23:56:33,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 23:56:33,953 INFO L478 AbstractCegarLoop]: Abstraction has 651 states and 906 transitions. [2022-03-20 23:56:33,953 INFO L479 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) [2022-03-20 23:56:33,953 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 906 transitions. [2022-03-20 23:56:33,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-03-20 23:56:33,955 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 23:56:33,955 INFO L499 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] [2022-03-20 23:56:33,955 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 23:56:33,956 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 23:56:33,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 23:56:33,956 INFO L85 PathProgramCache]: Analyzing trace with hash -2031942295, now seen corresponding path program 1 times [2022-03-20 23:56:33,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 23:56:33,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1411426556] [2022-03-20 23:56:33,957 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 23:56:33,957 INFO L85 PathProgramCache]: Analyzing trace with hash -2031942295, now seen corresponding path program 2 times [2022-03-20 23:56:33,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 23:56:33,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224339999] [2022-03-20 23:56:33,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 23:56:33,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 23:56:34,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:56:34,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 23:56:34,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:56:34,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 23:56:34,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:56:34,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 23:56:34,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:56:34,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 23:56:34,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:56:34,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 23:56:34,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:56:34,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-20 23:56:34,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:56:34,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 23:56:34,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 23:56:34,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224339999] [2022-03-20 23:56:34,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224339999] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 23:56:34,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 23:56:34,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-20 23:56:34,531 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 23:56:34,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1411426556] [2022-03-20 23:56:34,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1411426556] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 23:56:34,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 23:56:34,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-20 23:56:34,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997552417] [2022-03-20 23:56:34,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 23:56:34,533 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-20 23:56:34,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 23:56:34,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-20 23:56:34,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-03-20 23:56:34,534 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) [2022-03-20 23:56:40,965 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 23:56:43,930 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 23:56:47,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 23:56:47,473 INFO L93 Difference]: Finished difference Result 1886 states and 2773 transitions. [2022-03-20 23:56:47,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-20 23:56:47,474 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 [2022-03-20 23:56:47,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 23:56:47,484 INFO L225 Difference]: With dead ends: 1886 [2022-03-20 23:56:47,484 INFO L226 Difference]: Without dead ends: 1423 [2022-03-20 23:56:47,486 INFO L912 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 [2022-03-20 23:56:47,487 INFO L913 BasicCegarLoop]: 924 mSDtfsCounter, 2981 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 3571 mSolverCounterSat, 1112 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3019 SdHoareTripleChecker+Valid, 1638 SdHoareTripleChecker+Invalid, 4685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1112 IncrementalHoareTripleChecker+Valid, 3571 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2022-03-20 23:56:47,488 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [3019 Valid, 1638 Invalid, 4685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1112 Valid, 3571 Invalid, 2 Unknown, 0 Unchecked, 11.8s Time] [2022-03-20 23:56:47,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1423 states. [2022-03-20 23:56:47,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1423 to 1195. [2022-03-20 23:56:47,662 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) [2022-03-20 23:56:47,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1717 transitions. [2022-03-20 23:56:47,670 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1717 transitions. Word has length 42 [2022-03-20 23:56:47,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 23:56:47,670 INFO L478 AbstractCegarLoop]: Abstraction has 1195 states and 1717 transitions. [2022-03-20 23:56:47,670 INFO L479 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) [2022-03-20 23:56:47,670 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1717 transitions. [2022-03-20 23:56:47,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-03-20 23:56:47,678 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 23:56:47,678 INFO L499 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] [2022-03-20 23:56:47,678 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-20 23:56:47,679 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 23:56:47,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 23:56:47,679 INFO L85 PathProgramCache]: Analyzing trace with hash 2071284277, now seen corresponding path program 1 times [2022-03-20 23:56:47,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 23:56:47,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [740623935] [2022-03-20 23:56:47,680 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 23:56:47,680 INFO L85 PathProgramCache]: Analyzing trace with hash 2071284277, now seen corresponding path program 2 times [2022-03-20 23:56:47,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 23:56:47,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990431591] [2022-03-20 23:56:47,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 23:56:47,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 23:56:47,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:56:48,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 23:56:48,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:56:48,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 23:56:48,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:56:48,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 23:56:48,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:56:48,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 23:56:48,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:56:48,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 23:56:48,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:56:48,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-20 23:56:48,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:56:48,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-20 23:56:48,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:56:48,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 23:56:48,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 23:56:48,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990431591] [2022-03-20 23:56:48,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990431591] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 23:56:48,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 23:56:48,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-20 23:56:48,337 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 23:56:48,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [740623935] [2022-03-20 23:56:48,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [740623935] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 23:56:48,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 23:56:48,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-20 23:56:48,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961696685] [2022-03-20 23:56:48,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 23:56:48,340 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-20 23:56:48,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 23:56:48,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-20 23:56:48,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-03-20 23:56:48,342 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) [2022-03-20 23:56:55,007 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 [] [2022-03-20 23:56:58,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 23:56:58,302 INFO L93 Difference]: Finished difference Result 2186 states and 3260 transitions. [2022-03-20 23:56:58,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-20 23:56:58,303 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 [2022-03-20 23:56:58,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 23:56:58,318 INFO L225 Difference]: With dead ends: 2186 [2022-03-20 23:56:58,318 INFO L226 Difference]: Without dead ends: 2168 [2022-03-20 23:56:58,319 INFO L912 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 [2022-03-20 23:56:58,325 INFO L913 BasicCegarLoop]: 720 mSDtfsCounter, 2910 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 3409 mSolverCounterSat, 990 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2966 SdHoareTripleChecker+Valid, 1372 SdHoareTripleChecker+Invalid, 4400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 990 IncrementalHoareTripleChecker+Valid, 3409 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-03-20 23:56:58,325 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2966 Valid, 1372 Invalid, 4400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [990 Valid, 3409 Invalid, 1 Unknown, 0 Unchecked, 8.8s Time] [2022-03-20 23:56:58,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2168 states. [2022-03-20 23:56:58,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2168 to 1838. [2022-03-20 23:56:58,627 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) [2022-03-20 23:56:58,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1838 states to 1838 states and 2684 transitions. [2022-03-20 23:56:58,635 INFO L78 Accepts]: Start accepts. Automaton has 1838 states and 2684 transitions. Word has length 54 [2022-03-20 23:56:58,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 23:56:58,636 INFO L478 AbstractCegarLoop]: Abstraction has 1838 states and 2684 transitions. [2022-03-20 23:56:58,636 INFO L479 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) [2022-03-20 23:56:58,636 INFO L276 IsEmpty]: Start isEmpty. Operand 1838 states and 2684 transitions. [2022-03-20 23:56:58,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-20 23:56:58,638 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 23:56:58,638 INFO L499 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] [2022-03-20 23:56:58,638 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-20 23:56:58,638 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 23:56:58,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 23:56:58,639 INFO L85 PathProgramCache]: Analyzing trace with hash 546834136, now seen corresponding path program 1 times [2022-03-20 23:56:58,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 23:56:58,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1948401764] [2022-03-20 23:56:58,639 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 23:56:58,639 INFO L85 PathProgramCache]: Analyzing trace with hash 546834136, now seen corresponding path program 2 times [2022-03-20 23:56:58,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 23:56:58,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518566717] [2022-03-20 23:56:58,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 23:56:58,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 23:56:58,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:56:58,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 23:56:58,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:56:58,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 23:56:58,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:56:59,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 23:56:59,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:56:59,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 23:56:59,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:56:59,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 23:56:59,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:56:59,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-20 23:56:59,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:56:59,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 23:56:59,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 23:56:59,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518566717] [2022-03-20 23:56:59,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518566717] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 23:56:59,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 23:56:59,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-20 23:56:59,155 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 23:56:59,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1948401764] [2022-03-20 23:56:59,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1948401764] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 23:56:59,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 23:56:59,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-20 23:56:59,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528745433] [2022-03-20 23:56:59,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 23:56:59,156 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-20 23:56:59,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 23:56:59,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-20 23:56:59,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-03-20 23:56:59,157 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) [2022-03-20 23:57:05,563 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 [] [2022-03-20 23:57:09,214 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 23:57:11,283 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 23:57:14,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 23:57:14,317 INFO L93 Difference]: Finished difference Result 3657 states and 5559 transitions. [2022-03-20 23:57:14,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-20 23:57:14,317 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 [2022-03-20 23:57:14,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 23:57:14,336 INFO L225 Difference]: With dead ends: 3657 [2022-03-20 23:57:14,336 INFO L226 Difference]: Without dead ends: 3654 [2022-03-20 23:57:14,338 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-03-20 23:57:14,339 INFO L913 BasicCegarLoop]: 1116 mSDtfsCounter, 2060 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 4321 mSolverCounterSat, 836 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2100 SdHoareTripleChecker+Valid, 1845 SdHoareTripleChecker+Invalid, 5160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 836 IncrementalHoareTripleChecker+Valid, 4321 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.8s IncrementalHoareTripleChecker+Time [2022-03-20 23:57:14,339 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2100 Valid, 1845 Invalid, 5160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [836 Valid, 4321 Invalid, 3 Unknown, 0 Unchecked, 13.8s Time] [2022-03-20 23:57:14,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3654 states. [2022-03-20 23:57:14,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3654 to 2949. [2022-03-20 23:57:14,907 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) [2022-03-20 23:57:14,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2949 states to 2949 states and 4323 transitions. [2022-03-20 23:57:14,920 INFO L78 Accepts]: Start accepts. Automaton has 2949 states and 4323 transitions. Word has length 55 [2022-03-20 23:57:14,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 23:57:14,921 INFO L478 AbstractCegarLoop]: Abstraction has 2949 states and 4323 transitions. [2022-03-20 23:57:14,921 INFO L479 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) [2022-03-20 23:57:14,921 INFO L276 IsEmpty]: Start isEmpty. Operand 2949 states and 4323 transitions. [2022-03-20 23:57:14,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-20 23:57:14,922 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 23:57:14,923 INFO L499 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] [2022-03-20 23:57:14,923 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-20 23:57:14,923 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 23:57:14,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 23:57:14,923 INFO L85 PathProgramCache]: Analyzing trace with hash -893598350, now seen corresponding path program 1 times [2022-03-20 23:57:14,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 23:57:14,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [173377699] [2022-03-20 23:57:14,925 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 23:57:14,925 INFO L85 PathProgramCache]: Analyzing trace with hash -893598350, now seen corresponding path program 2 times [2022-03-20 23:57:14,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 23:57:14,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90094523] [2022-03-20 23:57:14,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 23:57:14,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 23:57:15,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:57:15,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 23:57:15,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:57:15,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 23:57:15,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:57:15,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 23:57:15,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:57:15,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 23:57:15,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:57:15,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 23:57:15,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:57:15,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-20 23:57:15,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:57:15,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 23:57:15,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 23:57:15,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90094523] [2022-03-20 23:57:15,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90094523] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 23:57:15,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 23:57:15,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-20 23:57:15,499 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 23:57:15,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [173377699] [2022-03-20 23:57:15,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [173377699] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 23:57:15,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 23:57:15,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-20 23:57:15,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215240150] [2022-03-20 23:57:15,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 23:57:15,500 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-20 23:57:15,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 23:57:15,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-20 23:57:15,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-03-20 23:57:15,500 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) [2022-03-20 23:57:21,503 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 [] [2022-03-20 23:57:22,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 23:57:22,988 INFO L93 Difference]: Finished difference Result 3468 states and 5241 transitions. [2022-03-20 23:57:22,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-20 23:57:22,988 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 [2022-03-20 23:57:22,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 23:57:23,003 INFO L225 Difference]: With dead ends: 3468 [2022-03-20 23:57:23,004 INFO L226 Difference]: Without dead ends: 3464 [2022-03-20 23:57:23,005 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-03-20 23:57:23,006 INFO L913 BasicCegarLoop]: 709 mSDtfsCounter, 1926 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 2439 mSolverCounterSat, 783 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1954 SdHoareTripleChecker+Valid, 1233 SdHoareTripleChecker+Invalid, 3223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 783 IncrementalHoareTripleChecker+Valid, 2439 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-03-20 23:57:23,006 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1954 Valid, 1233 Invalid, 3223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [783 Valid, 2439 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2022-03-20 23:57:23,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3464 states. [2022-03-20 23:57:23,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3464 to 2974. [2022-03-20 23:57:23,585 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) [2022-03-20 23:57:23,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2974 states to 2974 states and 4359 transitions. [2022-03-20 23:57:23,596 INFO L78 Accepts]: Start accepts. Automaton has 2974 states and 4359 transitions. Word has length 55 [2022-03-20 23:57:23,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 23:57:23,598 INFO L478 AbstractCegarLoop]: Abstraction has 2974 states and 4359 transitions. [2022-03-20 23:57:23,598 INFO L479 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) [2022-03-20 23:57:23,598 INFO L276 IsEmpty]: Start isEmpty. Operand 2974 states and 4359 transitions. [2022-03-20 23:57:23,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-03-20 23:57:23,600 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 23:57:23,600 INFO L499 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] [2022-03-20 23:57:23,600 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-20 23:57:23,600 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 23:57:23,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 23:57:23,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1696705075, now seen corresponding path program 1 times [2022-03-20 23:57:23,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 23:57:23,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [378433104] [2022-03-20 23:57:23,601 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 23:57:23,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1696705075, now seen corresponding path program 2 times [2022-03-20 23:57:23,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 23:57:23,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707810815] [2022-03-20 23:57:23,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 23:57:23,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 23:57:23,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:57:23,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 23:57:23,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:57:23,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 23:57:23,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:57:24,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 23:57:24,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:57:24,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 23:57:24,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:57:24,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 23:57:24,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:57:24,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-20 23:57:24,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:57:24,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 23:57:24,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:57:24,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 23:57:24,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:57:24,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 23:57:24,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 23:57:24,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707810815] [2022-03-20 23:57:24,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707810815] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 23:57:24,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 23:57:24,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-20 23:57:24,261 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 23:57:24,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [378433104] [2022-03-20 23:57:24,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [378433104] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 23:57:24,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 23:57:24,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-20 23:57:24,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819013731] [2022-03-20 23:57:24,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 23:57:24,262 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-20 23:57:24,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 23:57:24,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-20 23:57:24,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-03-20 23:57:24,263 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) [2022-03-20 23:57:29,923 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 23:57:34,424 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 23:57:38,776 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 23:57:42,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 23:57:42,258 INFO L93 Difference]: Finished difference Result 4254 states and 6463 transitions. [2022-03-20 23:57:42,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-20 23:57:42,258 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 [2022-03-20 23:57:42,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 23:57:42,276 INFO L225 Difference]: With dead ends: 4254 [2022-03-20 23:57:42,276 INFO L226 Difference]: Without dead ends: 4246 [2022-03-20 23:57:42,278 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=485, Invalid=1585, Unknown=0, NotChecked=0, Total=2070 [2022-03-20 23:57:42,279 INFO L913 BasicCegarLoop]: 1005 mSDtfsCounter, 3485 mSDsluCounter, 898 mSDsCounter, 0 mSdLazyCounter, 5607 mSolverCounterSat, 1605 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3534 SdHoareTripleChecker+Valid, 1903 SdHoareTripleChecker+Invalid, 7215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1605 IncrementalHoareTripleChecker+Valid, 5607 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.2s IncrementalHoareTripleChecker+Time [2022-03-20 23:57:42,279 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [3534 Valid, 1903 Invalid, 7215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1605 Valid, 5607 Invalid, 3 Unknown, 0 Unchecked, 15.2s Time] [2022-03-20 23:57:42,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4246 states. [2022-03-20 23:57:42,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4246 to 3598. [2022-03-20 23:57:42,911 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) [2022-03-20 23:57:42,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3598 states to 3598 states and 5297 transitions. [2022-03-20 23:57:42,923 INFO L78 Accepts]: Start accepts. Automaton has 3598 states and 5297 transitions. Word has length 57 [2022-03-20 23:57:42,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 23:57:42,923 INFO L478 AbstractCegarLoop]: Abstraction has 3598 states and 5297 transitions. [2022-03-20 23:57:42,924 INFO L479 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) [2022-03-20 23:57:42,924 INFO L276 IsEmpty]: Start isEmpty. Operand 3598 states and 5297 transitions. [2022-03-20 23:57:42,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-03-20 23:57:42,925 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 23:57:42,925 INFO L499 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] [2022-03-20 23:57:42,925 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-20 23:57:42,925 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 23:57:42,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 23:57:42,926 INFO L85 PathProgramCache]: Analyzing trace with hash -582745306, now seen corresponding path program 1 times [2022-03-20 23:57:42,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 23:57:42,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1197137741] [2022-03-20 23:57:42,926 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 23:57:42,927 INFO L85 PathProgramCache]: Analyzing trace with hash -582745306, now seen corresponding path program 2 times [2022-03-20 23:57:42,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 23:57:42,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941688792] [2022-03-20 23:57:42,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 23:57:42,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 23:57:43,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:57:43,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 23:57:43,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:57:43,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 23:57:43,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:57:43,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 23:57:43,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:57:43,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 23:57:43,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:57:43,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 23:57:43,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:57:43,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-20 23:57:43,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:57:43,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-20 23:57:43,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:57:43,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 23:57:43,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 23:57:43,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941688792] [2022-03-20 23:57:43,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941688792] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 23:57:43,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 23:57:43,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-20 23:57:43,450 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 23:57:43,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1197137741] [2022-03-20 23:57:43,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1197137741] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 23:57:43,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 23:57:43,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-20 23:57:43,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884033982] [2022-03-20 23:57:43,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 23:57:43,451 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-20 23:57:43,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 23:57:43,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-20 23:57:43,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-03-20 23:57:43,452 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) [2022-03-20 23:57:47,605 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 23:57:51,013 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 23:57:55,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 23:57:55,911 INFO L93 Difference]: Finished difference Result 11208 states and 17196 transitions. [2022-03-20 23:57:55,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-20 23:57:55,915 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 [2022-03-20 23:57:55,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 23:57:55,952 INFO L225 Difference]: With dead ends: 11208 [2022-03-20 23:57:55,952 INFO L226 Difference]: Without dead ends: 7864 [2022-03-20 23:57:55,968 INFO L912 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 [2022-03-20 23:57:55,969 INFO L913 BasicCegarLoop]: 893 mSDtfsCounter, 3290 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 3251 mSolverCounterSat, 1246 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3363 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, 10.2s IncrementalHoareTripleChecker+Time [2022-03-20 23:57:55,969 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [3363 Valid, 1587 Invalid, 4499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1246 Valid, 3251 Invalid, 2 Unknown, 0 Unchecked, 10.2s Time] [2022-03-20 23:57:55,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7864 states. [2022-03-20 23:57:57,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7864 to 6946. [2022-03-20 23:57:57,183 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) [2022-03-20 23:57:57,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6946 states to 6946 states and 10479 transitions. [2022-03-20 23:57:57,206 INFO L78 Accepts]: Start accepts. Automaton has 6946 states and 10479 transitions. Word has length 57 [2022-03-20 23:57:57,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 23:57:57,206 INFO L478 AbstractCegarLoop]: Abstraction has 6946 states and 10479 transitions. [2022-03-20 23:57:57,206 INFO L479 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) [2022-03-20 23:57:57,206 INFO L276 IsEmpty]: Start isEmpty. Operand 6946 states and 10479 transitions. [2022-03-20 23:57:57,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-03-20 23:57:57,208 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 23:57:57,208 INFO L499 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] [2022-03-20 23:57:57,208 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-20 23:57:57,208 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 23:57:57,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 23:57:57,208 INFO L85 PathProgramCache]: Analyzing trace with hash -466129244, now seen corresponding path program 1 times [2022-03-20 23:57:57,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 23:57:57,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1249398060] [2022-03-20 23:57:57,209 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 23:57:57,209 INFO L85 PathProgramCache]: Analyzing trace with hash -466129244, now seen corresponding path program 2 times [2022-03-20 23:57:57,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 23:57:57,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377794444] [2022-03-20 23:57:57,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 23:57:57,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 23:57:57,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:57:57,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 23:57:57,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:57:57,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 23:57:57,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:57:57,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 23:57:57,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:57:57,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 23:57:57,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:57:57,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 23:57:57,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:57:57,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-20 23:57:57,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:57:57,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 23:57:57,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 23:57:57,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377794444] [2022-03-20 23:57:57,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377794444] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 23:57:57,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 23:57:57,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-20 23:57:57,741 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 23:57:57,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1249398060] [2022-03-20 23:57:57,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1249398060] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 23:57:57,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 23:57:57,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-20 23:57:57,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343178407] [2022-03-20 23:57:57,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 23:57:57,741 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-20 23:57:57,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 23:57:57,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-20 23:57:57,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-03-20 23:57:57,742 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) [2022-03-20 23:58:05,006 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 [] [2022-03-20 23:58:13,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 23:58:13,187 INFO L93 Difference]: Finished difference Result 14677 states and 22415 transitions. [2022-03-20 23:58:13,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-20 23:58:13,188 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 [2022-03-20 23:58:13,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 23:58:13,224 INFO L225 Difference]: With dead ends: 14677 [2022-03-20 23:58:13,224 INFO L226 Difference]: Without dead ends: 8095 [2022-03-20 23:58:13,249 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=453, Invalid=1439, Unknown=0, NotChecked=0, Total=1892 [2022-03-20 23:58:13,249 INFO L913 BasicCegarLoop]: 899 mSDtfsCounter, 5146 mSDsluCounter, 886 mSDsCounter, 0 mSdLazyCounter, 5510 mSolverCounterSat, 2195 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5190 SdHoareTripleChecker+Valid, 1785 SdHoareTripleChecker+Invalid, 7706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2195 IncrementalHoareTripleChecker+Valid, 5510 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2022-03-20 23:58:13,250 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [5190 Valid, 1785 Invalid, 7706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2195 Valid, 5510 Invalid, 1 Unknown, 0 Unchecked, 11.6s Time] [2022-03-20 23:58:13,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8095 states. [2022-03-20 23:58:14,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8095 to 6937. [2022-03-20 23:58:14,462 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) [2022-03-20 23:58:14,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6937 states to 6937 states and 10458 transitions. [2022-03-20 23:58:14,485 INFO L78 Accepts]: Start accepts. Automaton has 6937 states and 10458 transitions. Word has length 56 [2022-03-20 23:58:14,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 23:58:14,485 INFO L478 AbstractCegarLoop]: Abstraction has 6937 states and 10458 transitions. [2022-03-20 23:58:14,486 INFO L479 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) [2022-03-20 23:58:14,486 INFO L276 IsEmpty]: Start isEmpty. Operand 6937 states and 10458 transitions. [2022-03-20 23:58:14,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-03-20 23:58:14,487 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 23:58:14,487 INFO L499 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] [2022-03-20 23:58:14,487 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-20 23:58:14,487 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 23:58:14,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 23:58:14,488 INFO L85 PathProgramCache]: Analyzing trace with hash 613167468, now seen corresponding path program 1 times [2022-03-20 23:58:14,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 23:58:14,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1579411224] [2022-03-20 23:58:14,488 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 23:58:14,488 INFO L85 PathProgramCache]: Analyzing trace with hash 613167468, now seen corresponding path program 2 times [2022-03-20 23:58:14,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 23:58:14,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819155103] [2022-03-20 23:58:14,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 23:58:14,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 23:58:14,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:58:14,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 23:58:14,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:58:14,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 23:58:14,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:58:14,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 23:58:14,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:58:14,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 23:58:14,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:58:14,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 23:58:14,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:58:15,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-20 23:58:15,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:58:15,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 23:58:15,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:58:15,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 23:58:15,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:58:15,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 23:58:15,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 23:58:15,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819155103] [2022-03-20 23:58:15,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819155103] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 23:58:15,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 23:58:15,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-20 23:58:15,094 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 23:58:15,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1579411224] [2022-03-20 23:58:15,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1579411224] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 23:58:15,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 23:58:15,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-20 23:58:15,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096053398] [2022-03-20 23:58:15,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 23:58:15,095 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-20 23:58:15,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 23:58:15,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-20 23:58:15,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-03-20 23:58:15,096 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) [2022-03-20 23:58:22,873 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 [] [2022-03-20 23:58:29,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 23:58:29,458 INFO L93 Difference]: Finished difference Result 7820 states and 12070 transitions. [2022-03-20 23:58:29,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-20 23:58:29,459 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 [2022-03-20 23:58:29,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 23:58:29,486 INFO L225 Difference]: With dead ends: 7820 [2022-03-20 23:58:29,487 INFO L226 Difference]: Without dead ends: 7815 [2022-03-20 23:58:29,490 INFO L912 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 [2022-03-20 23:58:29,491 INFO L913 BasicCegarLoop]: 988 mSDtfsCounter, 3648 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 4722 mSolverCounterSat, 1703 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3698 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, 10.6s IncrementalHoareTripleChecker+Time [2022-03-20 23:58:29,491 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [3698 Valid, 1777 Invalid, 6426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1703 Valid, 4722 Invalid, 1 Unknown, 0 Unchecked, 10.6s Time] [2022-03-20 23:58:29,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7815 states. [2022-03-20 23:58:30,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7815 to 6937. [2022-03-20 23:58:30,782 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) [2022-03-20 23:58:30,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6937 states to 6937 states and 10457 transitions. [2022-03-20 23:58:30,807 INFO L78 Accepts]: Start accepts. Automaton has 6937 states and 10457 transitions. Word has length 58 [2022-03-20 23:58:30,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 23:58:30,807 INFO L478 AbstractCegarLoop]: Abstraction has 6937 states and 10457 transitions. [2022-03-20 23:58:30,807 INFO L479 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) [2022-03-20 23:58:30,807 INFO L276 IsEmpty]: Start isEmpty. Operand 6937 states and 10457 transitions. [2022-03-20 23:58:30,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-03-20 23:58:30,809 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 23:58:30,809 INFO L499 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] [2022-03-20 23:58:30,809 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-20 23:58:30,809 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 23:58:30,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 23:58:30,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1929708227, now seen corresponding path program 1 times [2022-03-20 23:58:30,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 23:58:30,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1408196967] [2022-03-20 23:58:30,810 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 23:58:30,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1929708227, now seen corresponding path program 2 times [2022-03-20 23:58:30,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 23:58:30,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320147977] [2022-03-20 23:58:30,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 23:58:30,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 23:58:30,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:58:31,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 23:58:31,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:58:31,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 23:58:31,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:58:31,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 23:58:31,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:58:31,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 23:58:31,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:58:31,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 23:58:31,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:58:31,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-20 23:58:31,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:58:31,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-03-20 23:58:31,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:58:31,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 23:58:31,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:58:31,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 23:58:31,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 23:58:31,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320147977] [2022-03-20 23:58:31,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320147977] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 23:58:31,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 23:58:31,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-20 23:58:31,390 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 23:58:31,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1408196967] [2022-03-20 23:58:31,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1408196967] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 23:58:31,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 23:58:31,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-20 23:58:31,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550776326] [2022-03-20 23:58:31,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 23:58:31,390 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-20 23:58:31,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 23:58:31,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-20 23:58:31,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-03-20 23:58:31,392 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) [2022-03-20 23:58:36,850 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 23:58:41,028 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 23:58:44,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 23:58:44,731 INFO L93 Difference]: Finished difference Result 14740 states and 22518 transitions. [2022-03-20 23:58:44,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-20 23:58:44,732 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 [2022-03-20 23:58:44,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 23:58:44,761 INFO L225 Difference]: With dead ends: 14740 [2022-03-20 23:58:44,761 INFO L226 Difference]: Without dead ends: 7831 [2022-03-20 23:58:44,789 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2022-03-20 23:58:44,790 INFO L913 BasicCegarLoop]: 699 mSDtfsCounter, 1906 mSDsluCounter, 1114 mSDsCounter, 0 mSdLazyCounter, 4677 mSolverCounterSat, 821 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1938 SdHoareTripleChecker+Valid, 1813 SdHoareTripleChecker+Invalid, 5500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 821 IncrementalHoareTripleChecker+Valid, 4677 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-03-20 23:58:44,790 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1938 Valid, 1813 Invalid, 5500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [821 Valid, 4677 Invalid, 2 Unknown, 0 Unchecked, 11.2s Time] [2022-03-20 23:58:44,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7831 states. [2022-03-20 23:58:46,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7831 to 6937. [2022-03-20 23:58:46,081 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) [2022-03-20 23:58:46,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6937 states to 6937 states and 10456 transitions. [2022-03-20 23:58:46,107 INFO L78 Accepts]: Start accepts. Automaton has 6937 states and 10456 transitions. Word has length 58 [2022-03-20 23:58:46,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 23:58:46,107 INFO L478 AbstractCegarLoop]: Abstraction has 6937 states and 10456 transitions. [2022-03-20 23:58:46,107 INFO L479 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) [2022-03-20 23:58:46,107 INFO L276 IsEmpty]: Start isEmpty. Operand 6937 states and 10456 transitions. [2022-03-20 23:58:46,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-20 23:58:46,110 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 23:58:46,110 INFO L499 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] [2022-03-20 23:58:46,110 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-20 23:58:46,110 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 23:58:46,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 23:58:46,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1708625388, now seen corresponding path program 1 times [2022-03-20 23:58:46,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 23:58:46,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [813643968] [2022-03-20 23:58:46,111 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 23:58:46,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1708625388, now seen corresponding path program 2 times [2022-03-20 23:58:46,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 23:58:46,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703259626] [2022-03-20 23:58:46,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 23:58:46,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 23:58:46,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:58:46,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 23:58:46,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:58:46,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 23:58:46,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:58:46,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 23:58:46,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:58:46,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 23:58:46,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:58:46,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 23:58:46,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:58:46,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-20 23:58:46,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:58:46,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-03-20 23:58:46,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:58:46,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 23:58:46,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:58:46,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 23:58:46,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 23:58:46,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703259626] [2022-03-20 23:58:46,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703259626] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 23:58:46,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 23:58:46,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 23:58:46,881 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 23:58:46,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [813643968] [2022-03-20 23:58:46,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [813643968] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 23:58:46,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 23:58:46,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 23:58:46,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197170068] [2022-03-20 23:58:46,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 23:58:46,881 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 23:58:46,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 23:58:46,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 23:58:46,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-03-20 23:58:46,883 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) [2022-03-20 23:58:54,151 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 [] [2022-03-20 23:58:57,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 23:58:57,935 INFO L93 Difference]: Finished difference Result 14697 states and 22709 transitions. [2022-03-20 23:58:57,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-20 23:58:57,935 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 [2022-03-20 23:58:57,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 23:58:57,963 INFO L225 Difference]: With dead ends: 14697 [2022-03-20 23:58:57,963 INFO L226 Difference]: Without dead ends: 7729 [2022-03-20 23:58:57,990 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2022-03-20 23:58:57,991 INFO L913 BasicCegarLoop]: 700 mSDtfsCounter, 1887 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 3876 mSolverCounterSat, 745 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1917 SdHoareTripleChecker+Valid, 1662 SdHoareTripleChecker+Invalid, 4622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 745 IncrementalHoareTripleChecker+Valid, 3876 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-03-20 23:58:57,991 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1917 Valid, 1662 Invalid, 4622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [745 Valid, 3876 Invalid, 1 Unknown, 0 Unchecked, 8.7s Time] [2022-03-20 23:58:57,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7729 states. [2022-03-20 23:58:59,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7729 to 6958. [2022-03-20 23:58:59,288 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) [2022-03-20 23:58:59,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6958 states to 6958 states and 10477 transitions. [2022-03-20 23:58:59,314 INFO L78 Accepts]: Start accepts. Automaton has 6958 states and 10477 transitions. Word has length 62 [2022-03-20 23:58:59,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 23:58:59,314 INFO L478 AbstractCegarLoop]: Abstraction has 6958 states and 10477 transitions. [2022-03-20 23:58:59,314 INFO L479 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) [2022-03-20 23:58:59,314 INFO L276 IsEmpty]: Start isEmpty. Operand 6958 states and 10477 transitions. [2022-03-20 23:58:59,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-03-20 23:58:59,316 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 23:58:59,316 INFO L499 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] [2022-03-20 23:58:59,316 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-20 23:58:59,316 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 23:58:59,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 23:58:59,317 INFO L85 PathProgramCache]: Analyzing trace with hash -427353988, now seen corresponding path program 1 times [2022-03-20 23:58:59,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 23:58:59,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1646298793] [2022-03-20 23:58:59,324 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-20 23:58:59,324 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 23:58:59,324 INFO L85 PathProgramCache]: Analyzing trace with hash -427353988, now seen corresponding path program 2 times [2022-03-20 23:58:59,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 23:58:59,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041007323] [2022-03-20 23:58:59,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 23:58:59,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 23:58:59,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:58:59,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 23:58:59,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:58:59,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 23:58:59,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:58:59,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 23:58:59,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:58:59,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-20 23:58:59,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:59:00,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 23:59:00,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:59:00,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-20 23:59:00,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:59:00,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-03-20 23:59:00,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:59:00,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 23:59:00,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:59:00,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 23:59:00,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 23:59:00,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041007323] [2022-03-20 23:59:00,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041007323] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 23:59:00,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063330835] [2022-03-20 23:59:00,143 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 23:59:00,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 23:59:00,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 23:59:00,145 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 23:59:00,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-20 23:59:04,528 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 23:59:04,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 23:59:04,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 2816 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-20 23:59:04,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 23:59:04,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 23:59:04,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 23:59:05,020 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 23:59:05,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063330835] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 23:59:05,021 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 23:59:05,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 18 [2022-03-20 23:59:05,021 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 23:59:05,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1646298793] [2022-03-20 23:59:05,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1646298793] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 23:59:05,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 23:59:05,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-20 23:59:05,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054363120] [2022-03-20 23:59:05,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 23:59:05,022 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-20 23:59:05,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 23:59:05,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-20 23:59:05,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2022-03-20 23:59:05,023 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) [2022-03-20 23:59:13,543 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 23:59:17,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 23:59:17,587 INFO L93 Difference]: Finished difference Result 14738 states and 22750 transitions. [2022-03-20 23:59:17,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-20 23:59:17,595 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 [2022-03-20 23:59:17,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 23:59:17,623 INFO L225 Difference]: With dead ends: 14738 [2022-03-20 23:59:17,623 INFO L226 Difference]: Without dead ends: 7750 [2022-03-20 23:59:17,649 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=166, Invalid=590, Unknown=0, NotChecked=0, Total=756 [2022-03-20 23:59:17,650 INFO L913 BasicCegarLoop]: 700 mSDtfsCounter, 2786 mSDsluCounter, 1020 mSDsCounter, 0 mSdLazyCounter, 4113 mSolverCounterSat, 1216 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2816 SdHoareTripleChecker+Valid, 1720 SdHoareTripleChecker+Invalid, 5330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1216 IncrementalHoareTripleChecker+Valid, 4113 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-03-20 23:59:17,650 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2816 Valid, 1720 Invalid, 5330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1216 Valid, 4113 Invalid, 1 Unknown, 0 Unchecked, 9.8s Time] [2022-03-20 23:59:17,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7750 states. [2022-03-20 23:59:19,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7750 to 6979. [2022-03-20 23:59:19,072 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) [2022-03-20 23:59:19,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6979 states to 6979 states and 10498 transitions. [2022-03-20 23:59:19,091 INFO L78 Accepts]: Start accepts. Automaton has 6979 states and 10498 transitions. Word has length 63 [2022-03-20 23:59:19,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 23:59:19,091 INFO L478 AbstractCegarLoop]: Abstraction has 6979 states and 10498 transitions. [2022-03-20 23:59:19,091 INFO L479 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) [2022-03-20 23:59:19,091 INFO L276 IsEmpty]: Start isEmpty. Operand 6979 states and 10498 transitions. [2022-03-20 23:59:19,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-03-20 23:59:19,093 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 23:59:19,093 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 23:59:19,121 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-03-20 23:59:19,304 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-03-20 23:59:19,305 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 23:59:19,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 23:59:19,305 INFO L85 PathProgramCache]: Analyzing trace with hash 2076762092, now seen corresponding path program 3 times [2022-03-20 23:59:19,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 23:59:19,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [860601411] [2022-03-20 23:59:19,307 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-20 23:59:19,307 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 23:59:19,307 INFO L85 PathProgramCache]: Analyzing trace with hash 2076762092, now seen corresponding path program 4 times [2022-03-20 23:59:19,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 23:59:19,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492684209] [2022-03-20 23:59:19,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 23:59:19,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 23:59:19,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:59:19,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 23:59:19,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:59:19,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 23:59:19,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:59:19,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-03-20 23:59:19,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:59:19,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 23:59:19,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:59:20,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 23:59:20,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:59:20,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-03-20 23:59:20,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:59:20,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-20 23:59:20,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:59:20,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 23:59:20,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:59:20,128 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 23:59:20,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 23:59:20,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492684209] [2022-03-20 23:59:20,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492684209] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 23:59:20,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589683493] [2022-03-20 23:59:20,129 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-20 23:59:20,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 23:59:20,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 23:59:20,130 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 23:59:20,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-20 23:59:21,007 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-20 23:59:21,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 23:59:21,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 2831 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-20 23:59:21,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 23:59:21,235 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 23:59:21,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 23:59:21,517 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 23:59:21,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589683493] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 23:59:21,518 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 23:59:21,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 6, 6] total 21 [2022-03-20 23:59:21,518 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 23:59:21,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [860601411] [2022-03-20 23:59:21,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [860601411] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 23:59:21,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 23:59:21,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-20 23:59:21,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938108164] [2022-03-20 23:59:21,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 23:59:21,518 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-20 23:59:21,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 23:59:21,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-20 23:59:21,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-03-20 23:59:21,519 INFO L87 Difference]: Start difference. First operand 6979 states and 10498 transitions. Second operand has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-20 23:59:27,860 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 23:59:30,012 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 23:59:34,717 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 [] [2022-03-20 23:59:39,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 23:59:39,832 INFO L93 Difference]: Finished difference Result 14779 states and 22791 transitions. [2022-03-20 23:59:39,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-20 23:59:39,832 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 64 [2022-03-20 23:59:39,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 23:59:39,859 INFO L225 Difference]: With dead ends: 14779 [2022-03-20 23:59:39,859 INFO L226 Difference]: Without dead ends: 7771 [2022-03-20 23:59:39,885 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=204, Invalid=788, Unknown=0, NotChecked=0, Total=992 [2022-03-20 23:59:39,885 INFO L913 BasicCegarLoop]: 700 mSDtfsCounter, 1590 mSDsluCounter, 1314 mSDsCounter, 0 mSdLazyCounter, 5785 mSolverCounterSat, 682 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1620 SdHoareTripleChecker+Valid, 2014 SdHoareTripleChecker+Invalid, 6470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 682 IncrementalHoareTripleChecker+Valid, 5785 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2022-03-20 23:59:39,886 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1620 Valid, 2014 Invalid, 6470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [682 Valid, 5785 Invalid, 3 Unknown, 0 Unchecked, 15.4s Time] [2022-03-20 23:59:39,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7771 states. [2022-03-20 23:59:41,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7771 to 7000. [2022-03-20 23:59:41,311 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) [2022-03-20 23:59:41,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7000 states to 7000 states and 10519 transitions. [2022-03-20 23:59:41,328 INFO L78 Accepts]: Start accepts. Automaton has 7000 states and 10519 transitions. Word has length 64 [2022-03-20 23:59:41,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 23:59:41,329 INFO L478 AbstractCegarLoop]: Abstraction has 7000 states and 10519 transitions. [2022-03-20 23:59:41,329 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-20 23:59:41,329 INFO L276 IsEmpty]: Start isEmpty. Operand 7000 states and 10519 transitions. [2022-03-20 23:59:41,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-03-20 23:59:41,330 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 23:59:41,330 INFO L499 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] [2022-03-20 23:59:41,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-20 23:59:41,531 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-03-20 23:59:41,531 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 23:59:41,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 23:59:41,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1900018052, now seen corresponding path program 5 times [2022-03-20 23:59:41,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 23:59:41,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [150913658] [2022-03-20 23:59:41,532 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-20 23:59:41,532 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 23:59:41,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1900018052, now seen corresponding path program 6 times [2022-03-20 23:59:41,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 23:59:41,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164072302] [2022-03-20 23:59:41,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 23:59:41,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 23:59:41,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:59:41,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 23:59:41,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:59:41,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 23:59:41,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:59:42,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 23:59:42,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:59:42,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-20 23:59:42,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:59:42,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 23:59:42,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:59:42,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 23:59:42,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:59:42,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-20 23:59:42,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:59:42,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 23:59:42,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:59:42,336 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 23:59:42,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 23:59:42,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164072302] [2022-03-20 23:59:42,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164072302] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 23:59:42,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999730600] [2022-03-20 23:59:42,337 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-20 23:59:42,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 23:59:42,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 23:59:42,338 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 23:59:42,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-21 00:00:13,453 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-21 00:00:13,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:00:13,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 2846 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-21 00:00:13,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:00:13,755 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:00:13,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-21 00:00:14,180 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:00:14,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999730600] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-21 00:00:14,180 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-21 00:00:14,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 7, 7] total 24 [2022-03-21 00:00:14,181 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:00:14,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [150913658] [2022-03-21 00:00:14,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [150913658] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:00:14,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:00:14,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-21 00:00:14,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341931862] [2022-03-21 00:00:14,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:00:14,181 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-21 00:00:14,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:00:14,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-21 00:00:14,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2022-03-21 00:00:14,182 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) [2022-03-21 00:00:25,427 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 [] [2022-03-21 00:00:30,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:00:30,822 INFO L93 Difference]: Finished difference Result 14820 states and 22832 transitions. [2022-03-21 00:00:30,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-21 00:00:30,823 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 [2022-03-21 00:00:30,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:00:30,857 INFO L225 Difference]: With dead ends: 14820 [2022-03-21 00:00:30,857 INFO L226 Difference]: Without dead ends: 7792 [2022-03-21 00:00:30,922 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=248, Invalid=1012, Unknown=0, NotChecked=0, Total=1260 [2022-03-21 00:00:30,923 INFO L913 BasicCegarLoop]: 700 mSDtfsCounter, 1633 mSDsluCounter, 1353 mSDsCounter, 0 mSdLazyCounter, 5908 mSolverCounterSat, 673 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1663 SdHoareTripleChecker+Valid, 2053 SdHoareTripleChecker+Invalid, 6582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 673 IncrementalHoareTripleChecker+Valid, 5908 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2022-03-21 00:00:30,923 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1663 Valid, 2053 Invalid, 6582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [673 Valid, 5908 Invalid, 1 Unknown, 0 Unchecked, 13.4s Time] [2022-03-21 00:00:30,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7792 states. [2022-03-21 00:00:32,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7792 to 7021. [2022-03-21 00:00:32,440 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) [2022-03-21 00:00:32,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7021 states to 7021 states and 10540 transitions. [2022-03-21 00:00:32,460 INFO L78 Accepts]: Start accepts. Automaton has 7021 states and 10540 transitions. Word has length 65 [2022-03-21 00:00:32,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:00:32,460 INFO L478 AbstractCegarLoop]: Abstraction has 7021 states and 10540 transitions. [2022-03-21 00:00:32,460 INFO L479 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) [2022-03-21 00:00:32,460 INFO L276 IsEmpty]: Start isEmpty. Operand 7021 states and 10540 transitions. [2022-03-21 00:00:32,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-21 00:00:32,462 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:00:32,462 INFO L499 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:00:32,505 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-03-21 00:00:32,675 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:00:32,676 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:00:32,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:00:32,676 INFO L85 PathProgramCache]: Analyzing trace with hash -369978239, now seen corresponding path program 1 times [2022-03-21 00:00:32,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:00:32,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [499259394] [2022-03-21 00:00:32,677 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:00:32,677 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:00:32,677 INFO L85 PathProgramCache]: Analyzing trace with hash -369978239, now seen corresponding path program 2 times [2022-03-21 00:00:32,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:00:32,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231191215] [2022-03-21 00:00:32,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:00:32,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:00:32,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:00:32,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:00:32,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:00:33,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:00:33,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:00:33,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:00:33,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:00:33,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-21 00:00:33,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:00:33,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:00:33,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:00:33,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-03-21 00:00:33,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:00:33,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-21 00:00:33,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:00:33,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:00:33,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:00:33,567 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:00:33,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:00:33,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231191215] [2022-03-21 00:00:33,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231191215] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:00:33,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613525177] [2022-03-21 00:00:33,568 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:00:33,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:00:33,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:00:33,569 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-21 00:00:33,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-21 00:00:45,596 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-21 00:00:45,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:00:45,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 2862 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-21 00:00:45,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:00:46,037 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:00:46,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-21 00:00:46,665 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:00:46,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613525177] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-21 00:00:46,665 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-21 00:00:46,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 8, 8] total 27 [2022-03-21 00:00:46,665 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:00:46,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [499259394] [2022-03-21 00:00:46,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [499259394] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:00:46,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:00:46,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-21 00:00:46,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481531703] [2022-03-21 00:00:46,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:00:46,666 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-21 00:00:46,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:00:46,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-21 00:00:46,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=571, Unknown=0, NotChecked=0, Total=702 [2022-03-21 00:00:46,667 INFO L87 Difference]: Start difference. First operand 7021 states and 10540 transitions. Second operand has 16 states, 16 states have (on average 3.0625) internal successors, (49), 8 states have internal predecessors, (49), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-21 00:00:55,566 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 [] [2022-03-21 00:01:00,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:01:00,395 INFO L93 Difference]: Finished difference Result 14861 states and 22873 transitions. [2022-03-21 00:01:00,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-21 00:01:00,396 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 8 states have internal predecessors, (49), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 67 [2022-03-21 00:01:00,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:01:00,426 INFO L225 Difference]: With dead ends: 14861 [2022-03-21 00:01:00,426 INFO L226 Difference]: Without dead ends: 7813 [2022-03-21 00:01:00,450 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=300, Invalid=1260, Unknown=0, NotChecked=0, Total=1560 [2022-03-21 00:01:00,451 INFO L913 BasicCegarLoop]: 700 mSDtfsCounter, 1814 mSDsluCounter, 1043 mSDsCounter, 0 mSdLazyCounter, 4582 mSolverCounterSat, 824 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1844 SdHoareTripleChecker+Valid, 1743 SdHoareTripleChecker+Invalid, 5407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 824 IncrementalHoareTripleChecker+Valid, 4582 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2022-03-21 00:01:00,451 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1844 Valid, 1743 Invalid, 5407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [824 Valid, 4582 Invalid, 1 Unknown, 0 Unchecked, 10.5s Time] [2022-03-21 00:01:00,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7813 states. [2022-03-21 00:01:01,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7813 to 7042. [2022-03-21 00:01:01,980 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) [2022-03-21 00:01:01,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7042 states to 7042 states and 10561 transitions. [2022-03-21 00:01:01,999 INFO L78 Accepts]: Start accepts. Automaton has 7042 states and 10561 transitions. Word has length 67 [2022-03-21 00:01:01,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:01:01,999 INFO L478 AbstractCegarLoop]: Abstraction has 7042 states and 10561 transitions. [2022-03-21 00:01:01,999 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 8 states have internal predecessors, (49), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-21 00:01:02,000 INFO L276 IsEmpty]: Start isEmpty. Operand 7042 states and 10561 transitions. [2022-03-21 00:01:02,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-03-21 00:01:02,001 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:01:02,001 INFO L499 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] [2022-03-21 00:01:02,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-21 00:01:02,207 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-03-21 00:01:02,207 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:01:02,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:01:02,208 INFO L85 PathProgramCache]: Analyzing trace with hash -249355279, now seen corresponding path program 3 times [2022-03-21 00:01:02,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:01:02,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1682401668] [2022-03-21 00:01:02,209 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:01:02,209 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:01:02,209 INFO L85 PathProgramCache]: Analyzing trace with hash -249355279, now seen corresponding path program 4 times [2022-03-21 00:01:02,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:01:02,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665826833] [2022-03-21 00:01:02,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:01:02,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:01:02,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:01:02,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:01:02,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:01:02,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:01:02,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:01:02,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-21 00:01:02,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:01:02,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-21 00:01:02,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:01:02,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:01:02,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:01:03,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-03-21 00:01:03,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:01:03,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-03-21 00:01:03,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:01:03,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:01:03,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:01:03,123 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:01:03,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:01:03,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665826833] [2022-03-21 00:01:03,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665826833] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:01:03,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489469789] [2022-03-21 00:01:03,124 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-21 00:01:03,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:01:03,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:01:03,128 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-21 00:01:03,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-21 00:01:04,261 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-21 00:01:04,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:01:04,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 2877 conjuncts, 16 conjunts are in the unsatisfiable core [2022-03-21 00:01:04,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:01:04,776 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:01:04,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-21 00:01:05,349 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:01:05,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489469789] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-21 00:01:05,349 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-21 00:01:05,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 9, 9] total 30 [2022-03-21 00:01:05,349 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:01:05,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1682401668] [2022-03-21 00:01:05,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1682401668] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:01:05,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:01:05,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-03-21 00:01:05,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993491972] [2022-03-21 00:01:05,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:01:05,350 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-21 00:01:05,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:01:05,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-21 00:01:05,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=704, Unknown=0, NotChecked=0, Total=870 [2022-03-21 00:01:05,351 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) [2022-03-21 00:01:16,423 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 [] [2022-03-21 00:01:22,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:01:22,328 INFO L93 Difference]: Finished difference Result 14902 states and 22914 transitions. [2022-03-21 00:01:22,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-21 00:01:22,329 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 [2022-03-21 00:01:22,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:01:22,357 INFO L225 Difference]: With dead ends: 14902 [2022-03-21 00:01:22,358 INFO L226 Difference]: Without dead ends: 7834 [2022-03-21 00:01:22,384 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=356, Invalid=1536, Unknown=0, NotChecked=0, Total=1892 [2022-03-21 00:01:22,385 INFO L913 BasicCegarLoop]: 700 mSDtfsCounter, 1812 mSDsluCounter, 1562 mSDsCounter, 0 mSdLazyCounter, 6786 mSolverCounterSat, 771 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1842 SdHoareTripleChecker+Valid, 2262 SdHoareTripleChecker+Invalid, 7558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 6786 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2022-03-21 00:01:22,385 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1842 Valid, 2262 Invalid, 7558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [771 Valid, 6786 Invalid, 1 Unknown, 0 Unchecked, 13.7s Time] [2022-03-21 00:01:22,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7834 states. [2022-03-21 00:01:23,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7834 to 7063. [2022-03-21 00:01:23,948 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) [2022-03-21 00:01:23,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7063 states to 7063 states and 10582 transitions. [2022-03-21 00:01:23,969 INFO L78 Accepts]: Start accepts. Automaton has 7063 states and 10582 transitions. Word has length 68 [2022-03-21 00:01:23,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:01:23,969 INFO L478 AbstractCegarLoop]: Abstraction has 7063 states and 10582 transitions. [2022-03-21 00:01:23,969 INFO L479 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) [2022-03-21 00:01:23,970 INFO L276 IsEmpty]: Start isEmpty. Operand 7063 states and 10582 transitions. [2022-03-21 00:01:23,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-03-21 00:01:23,971 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:01:23,971 INFO L499 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:01:24,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-21 00:01:24,191 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-03-21 00:01:24,191 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:01:24,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:01:24,192 INFO L85 PathProgramCache]: Analyzing trace with hash 329647084, now seen corresponding path program 7 times [2022-03-21 00:01:24,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:01:24,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [923778864] [2022-03-21 00:01:24,193 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:01:24,193 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:01:24,193 INFO L85 PathProgramCache]: Analyzing trace with hash 329647084, now seen corresponding path program 8 times [2022-03-21 00:01:24,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:01:24,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318421667] [2022-03-21 00:01:24,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:01:24,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:01:24,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:01:24,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:01:24,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:01:24,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:01:24,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:01:24,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-21 00:01:24,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:01:25,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-21 00:01:25,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:01:25,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:01:25,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:01:25,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-03-21 00:01:25,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:01:25,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-03-21 00:01:25,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:01:25,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:01:25,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:01:25,265 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:01:25,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:01:25,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318421667] [2022-03-21 00:01:25,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318421667] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:01:25,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648980133] [2022-03-21 00:01:25,266 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:01:25,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:01:25,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:01:25,267 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-21 00:01:25,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-21 00:01:28,783 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-21 00:01:28,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:01:28,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 2891 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-21 00:01:28,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:01:29,144 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:01:29,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-21 00:01:29,780 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:01:29,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648980133] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-21 00:01:29,781 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-21 00:01:29,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 10, 10] total 33 [2022-03-21 00:01:29,781 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:01:29,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [923778864] [2022-03-21 00:01:29,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [923778864] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:01:29,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:01:29,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-03-21 00:01:29,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341443120] [2022-03-21 00:01:29,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:01:29,782 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-21 00:01:29,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:01:29,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-21 00:01:29,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=859, Unknown=0, NotChecked=0, Total=1056 [2022-03-21 00:01:29,783 INFO L87 Difference]: Start difference. First operand 7063 states and 10582 transitions. Second operand has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 10 states have internal predecessors, (50), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-21 00:01:41,536 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:01:47,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:01:47,417 INFO L93 Difference]: Finished difference Result 14943 states and 22955 transitions. [2022-03-21 00:01:47,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-21 00:01:47,418 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 10 states have internal predecessors, (50), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2022-03-21 00:01:47,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:01:47,455 INFO L225 Difference]: With dead ends: 14943 [2022-03-21 00:01:47,455 INFO L226 Difference]: Without dead ends: 7855 [2022-03-21 00:01:47,490 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=416, Invalid=1840, Unknown=0, NotChecked=0, Total=2256 [2022-03-21 00:01:47,492 INFO L913 BasicCegarLoop]: 700 mSDtfsCounter, 2289 mSDsluCounter, 1755 mSDsCounter, 0 mSdLazyCounter, 6805 mSolverCounterSat, 1036 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2319 SdHoareTripleChecker+Valid, 2455 SdHoareTripleChecker+Invalid, 7842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1036 IncrementalHoareTripleChecker+Valid, 6805 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2022-03-21 00:01:47,492 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2319 Valid, 2455 Invalid, 7842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1036 Valid, 6805 Invalid, 1 Unknown, 0 Unchecked, 13.9s Time] [2022-03-21 00:01:47,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7855 states. [2022-03-21 00:01:49,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7855 to 7084. [2022-03-21 00:01:49,219 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) [2022-03-21 00:01:49,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7084 states to 7084 states and 10603 transitions. [2022-03-21 00:01:49,241 INFO L78 Accepts]: Start accepts. Automaton has 7084 states and 10603 transitions. Word has length 68 [2022-03-21 00:01:49,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:01:49,241 INFO L478 AbstractCegarLoop]: Abstraction has 7084 states and 10603 transitions. [2022-03-21 00:01:49,241 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 10 states have internal predecessors, (50), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-21 00:01:49,241 INFO L276 IsEmpty]: Start isEmpty. Operand 7084 states and 10603 transitions. [2022-03-21 00:01:49,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-21 00:01:49,243 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:01:49,243 INFO L499 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] [2022-03-21 00:01:49,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-21 00:01:49,458 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-03-21 00:01:49,458 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:01:49,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:01:49,459 INFO L85 PathProgramCache]: Analyzing trace with hash -226008452, now seen corresponding path program 9 times [2022-03-21 00:01:49,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:01:49,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [477416479] [2022-03-21 00:01:49,459 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:01:49,460 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:01:49,460 INFO L85 PathProgramCache]: Analyzing trace with hash -226008452, now seen corresponding path program 10 times [2022-03-21 00:01:49,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:01:49,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789437749] [2022-03-21 00:01:49,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:01:49,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:01:49,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:01:49,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:01:49,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:01:49,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:01:49,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:01:50,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-21 00:01:50,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:01:50,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-21 00:01:50,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:01:50,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:01:50,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:01:50,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-03-21 00:01:50,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:01:50,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-21 00:01:50,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:01:50,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:01:50,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:01:50,564 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:01:50,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:01:50,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789437749] [2022-03-21 00:01:50,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789437749] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:01:50,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274208577] [2022-03-21 00:01:50,565 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-21 00:01:50,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:01:50,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:01:50,568 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-21 00:01:50,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-21 00:01:52,038 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-21 00:01:52,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:01:52,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 2906 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-21 00:01:52,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:01:52,596 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:01:52,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-21 00:01:53,661 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:01:53,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274208577] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-21 00:01:53,661 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-21 00:01:53,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11, 11] total 36 [2022-03-21 00:01:53,662 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:01:53,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [477416479] [2022-03-21 00:01:53,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [477416479] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:01:53,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:01:53,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-21 00:01:53,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673773540] [2022-03-21 00:01:53,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:01:53,663 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-21 00:01:53,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:01:53,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-21 00:01:53,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=1020, Unknown=0, NotChecked=0, Total=1260 [2022-03-21 00:01:53,664 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) [2022-03-21 00:02:06,129 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 [] [2022-03-21 00:02:12,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:02:12,236 INFO L93 Difference]: Finished difference Result 14984 states and 22996 transitions. [2022-03-21 00:02:12,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-21 00:02:12,237 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 [2022-03-21 00:02:12,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:02:12,274 INFO L225 Difference]: With dead ends: 14984 [2022-03-21 00:02:12,274 INFO L226 Difference]: Without dead ends: 7876 [2022-03-21 00:02:12,298 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=486, Invalid=2166, Unknown=0, NotChecked=0, Total=2652 [2022-03-21 00:02:12,298 INFO L913 BasicCegarLoop]: 700 mSDtfsCounter, 2360 mSDsluCounter, 1843 mSDsCounter, 0 mSdLazyCounter, 7142 mSolverCounterSat, 1049 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2390 SdHoareTripleChecker+Valid, 2543 SdHoareTripleChecker+Invalid, 8192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1049 IncrementalHoareTripleChecker+Valid, 7142 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time [2022-03-21 00:02:12,298 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2390 Valid, 2543 Invalid, 8192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1049 Valid, 7142 Invalid, 1 Unknown, 0 Unchecked, 14.6s Time] [2022-03-21 00:02:12,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7876 states. [2022-03-21 00:02:13,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7876 to 7105. [2022-03-21 00:02:13,927 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) [2022-03-21 00:02:13,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7105 states to 7105 states and 10624 transitions. [2022-03-21 00:02:13,948 INFO L78 Accepts]: Start accepts. Automaton has 7105 states and 10624 transitions. Word has length 69 [2022-03-21 00:02:13,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:02:13,948 INFO L478 AbstractCegarLoop]: Abstraction has 7105 states and 10624 transitions. [2022-03-21 00:02:13,948 INFO L479 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) [2022-03-21 00:02:13,948 INFO L276 IsEmpty]: Start isEmpty. Operand 7105 states and 10624 transitions. [2022-03-21 00:02:13,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-21 00:02:13,949 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:02:13,949 INFO L499 BasicCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:02:13,980 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-21 00:02:14,150 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:02:14,150 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:02:14,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:02:14,151 INFO L85 PathProgramCache]: Analyzing trace with hash 2035478657, now seen corresponding path program 5 times [2022-03-21 00:02:14,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:02:14,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [475550774] [2022-03-21 00:02:14,153 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:02:14,153 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:02:14,153 INFO L85 PathProgramCache]: Analyzing trace with hash 2035478657, now seen corresponding path program 6 times [2022-03-21 00:02:14,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:02:14,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248265518] [2022-03-21 00:02:14,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:02:14,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:02:14,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:14,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:02:14,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:14,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:02:14,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:15,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-21 00:02:15,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:15,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-21 00:02:15,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:15,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:02:15,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:15,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-21 00:02:15,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:15,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-03-21 00:02:15,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:15,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:02:15,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:15,298 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:02:15,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:02:15,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248265518] [2022-03-21 00:02:15,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248265518] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:02:15,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467004483] [2022-03-21 00:02:15,298 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-21 00:02:15,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:02:15,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:02:15,300 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-21 00:02:15,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-21 00:07:35,459 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-21 00:07:35,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:07:35,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 2922 conjuncts, 35 conjunts are in the unsatisfiable core [2022-03-21 00:07:35,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:07:36,258 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:07:36,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-21 00:07:37,217 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:07:37,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467004483] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-21 00:07:37,217 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-21 00:07:37,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 13, 12] total 40 [2022-03-21 00:07:37,218 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:07:37,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [475550774] [2022-03-21 00:07:37,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [475550774] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:07:37,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:07:37,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-21 00:07:37,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664606659] [2022-03-21 00:07:37,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:07:37,218 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-21 00:07:37,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:07:37,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-21 00:07:37,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=1277, Unknown=0, NotChecked=0, Total=1560 [2022-03-21 00:07:37,220 INFO L87 Difference]: Start difference. First operand 7105 states and 10624 transitions. Second operand has 20 states, 20 states have (on average 2.65) internal successors, (53), 12 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-21 00:07:47,691 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:07:54,063 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:08:01,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:08:01,150 INFO L93 Difference]: Finished difference Result 15025 states and 23037 transitions. [2022-03-21 00:08:01,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-21 00:08:01,151 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.65) internal successors, (53), 12 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 71 [2022-03-21 00:08:01,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:08:01,175 INFO L225 Difference]: With dead ends: 15025 [2022-03-21 00:08:01,175 INFO L226 Difference]: Without dead ends: 7897 [2022-03-21 00:08:01,194 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 132 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=560, Invalid=2632, Unknown=0, NotChecked=0, Total=3192 [2022-03-21 00:08:01,195 INFO L913 BasicCegarLoop]: 700 mSDtfsCounter, 1921 mSDsluCounter, 2394 mSDsCounter, 0 mSdLazyCounter, 9924 mSolverCounterSat, 894 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1951 SdHoareTripleChecker+Valid, 3094 SdHoareTripleChecker+Invalid, 10820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 894 IncrementalHoareTripleChecker+Valid, 9924 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.7s IncrementalHoareTripleChecker+Time [2022-03-21 00:08:01,195 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1951 Valid, 3094 Invalid, 10820 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [894 Valid, 9924 Invalid, 2 Unknown, 0 Unchecked, 19.7s Time] [2022-03-21 00:08:01,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7897 states. [2022-03-21 00:08:02,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7897 to 7126. [2022-03-21 00:08:02,778 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) [2022-03-21 00:08:02,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7126 states to 7126 states and 10645 transitions. [2022-03-21 00:08:02,796 INFO L78 Accepts]: Start accepts. Automaton has 7126 states and 10645 transitions. Word has length 71 [2022-03-21 00:08:02,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:08:02,796 INFO L478 AbstractCegarLoop]: Abstraction has 7126 states and 10645 transitions. [2022-03-21 00:08:02,796 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.65) internal successors, (53), 12 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-21 00:08:02,796 INFO L276 IsEmpty]: Start isEmpty. Operand 7126 states and 10645 transitions. [2022-03-21 00:08:02,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-21 00:08:02,797 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:08:02,797 INFO L499 BasicCegarLoop]: trace histogram [9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:08:02,858 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-03-21 00:08:03,007 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:08:03,007 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:08:03,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:08:03,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1305364465, now seen corresponding path program 7 times [2022-03-21 00:08:03,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:08:03,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1358635859] [2022-03-21 00:08:03,009 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:08:03,009 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:08:03,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1305364465, now seen corresponding path program 8 times [2022-03-21 00:08:03,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:08:03,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209893553] [2022-03-21 00:08:03,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:08:03,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:08:03,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:03,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:08:03,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:03,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:08:03,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:03,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-21 00:08:03,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:04,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-21 00:08:04,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:04,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:08:04,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:04,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-21 00:08:04,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:04,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-21 00:08:04,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:04,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:08:04,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:04,323 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:08:04,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:08:04,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209893553] [2022-03-21 00:08:04,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209893553] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:08:04,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84254280] [2022-03-21 00:08:04,324 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:08:04,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:08:04,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:08:04,325 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-21 00:08:04,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-21 00:08:17,438 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-21 00:08:17,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:08:17,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 2937 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-21 00:08:17,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:08:18,043 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:08:18,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-21 00:08:18,977 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:08:18,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84254280] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-21 00:08:18,978 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-21 00:08:18,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 13, 13] total 42 [2022-03-21 00:08:18,978 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:08:18,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1358635859] [2022-03-21 00:08:18,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1358635859] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:08:18,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:08:18,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-21 00:08:18,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889106376] [2022-03-21 00:08:18,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:08:18,979 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-21 00:08:18,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:08:18,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-21 00:08:18,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=1393, Unknown=0, NotChecked=0, Total=1722 [2022-03-21 00:08:18,980 INFO L87 Difference]: Start difference. First operand 7126 states and 10645 transitions. Second operand has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 13 states have internal predecessors, (54), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-21 00:08:30,100 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:08:32,211 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:08:34,375 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:08:36,539 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:08:43,653 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 [] [2022-03-21 00:08:52,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:08:52,055 INFO L93 Difference]: Finished difference Result 15066 states and 23078 transitions. [2022-03-21 00:08:52,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-21 00:08:52,056 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 13 states have internal predecessors, (54), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 72 [2022-03-21 00:08:52,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:08:52,083 INFO L225 Difference]: With dead ends: 15066 [2022-03-21 00:08:52,084 INFO L226 Difference]: Without dead ends: 7918 [2022-03-21 00:08:52,105 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=638, Invalid=2902, Unknown=0, NotChecked=0, Total=3540 [2022-03-21 00:08:52,106 INFO L913 BasicCegarLoop]: 700 mSDtfsCounter, 2640 mSDsluCounter, 2395 mSDsCounter, 0 mSdLazyCounter, 9433 mSolverCounterSat, 1184 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2670 SdHoareTripleChecker+Valid, 3095 SdHoareTripleChecker+Invalid, 10622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1184 IncrementalHoareTripleChecker+Valid, 9433 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.5s IncrementalHoareTripleChecker+Time [2022-03-21 00:08:52,106 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2670 Valid, 3095 Invalid, 10622 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1184 Valid, 9433 Invalid, 5 Unknown, 0 Unchecked, 28.5s Time] [2022-03-21 00:08:52,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7918 states. [2022-03-21 00:08:53,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7918 to 7147. [2022-03-21 00:08:53,755 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) [2022-03-21 00:08:53,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7147 states to 7147 states and 10666 transitions. [2022-03-21 00:08:53,776 INFO L78 Accepts]: Start accepts. Automaton has 7147 states and 10666 transitions. Word has length 72 [2022-03-21 00:08:53,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:08:53,777 INFO L478 AbstractCegarLoop]: Abstraction has 7147 states and 10666 transitions. [2022-03-21 00:08:53,777 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 13 states have internal predecessors, (54), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-21 00:08:53,777 INFO L276 IsEmpty]: Start isEmpty. Operand 7147 states and 10666 transitions. [2022-03-21 00:08:53,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-03-21 00:08:53,778 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:08:53,778 INFO L499 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:08:53,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-21 00:08:53,991 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:08:53,992 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:08:53,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:08:53,992 INFO L85 PathProgramCache]: Analyzing trace with hash 146660993, now seen corresponding path program 9 times [2022-03-21 00:08:53,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:08:53,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1182540284] [2022-03-21 00:08:53,993 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:08:53,993 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:08:53,993 INFO L85 PathProgramCache]: Analyzing trace with hash 146660993, now seen corresponding path program 10 times [2022-03-21 00:08:53,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:08:53,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613118094] [2022-03-21 00:08:53,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:08:53,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:08:54,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:54,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:08:54,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:54,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:08:54,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:55,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-21 00:08:55,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:55,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-21 00:08:55,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:55,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:08:55,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:55,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-03-21 00:08:55,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:55,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-21 00:08:55,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:55,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:08:55,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:55,623 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:08:55,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:08:55,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613118094] [2022-03-21 00:08:55,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613118094] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:08:55,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234887950] [2022-03-21 00:08:55,624 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-21 00:08:55,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:08:55,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:08:55,625 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-21 00:08:55,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-21 00:08:57,028 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-21 00:08:57,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:08:57,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 2952 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-21 00:08:57,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:08:57,862 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:08:57,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-21 00:08:59,078 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:08:59,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234887950] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-21 00:08:59,078 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-21 00:08:59,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 14, 14] total 45 [2022-03-21 00:08:59,078 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:08:59,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1182540284] [2022-03-21 00:08:59,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1182540284] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:08:59,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:08:59,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-21 00:08:59,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825909403] [2022-03-21 00:08:59,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:08:59,079 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-21 00:08:59,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:08:59,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-21 00:08:59,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=381, Invalid=1599, Unknown=0, NotChecked=0, Total=1980 [2022-03-21 00:08:59,081 INFO L87 Difference]: Start difference. First operand 7147 states and 10666 transitions. Second operand has 22 states, 22 states have (on average 2.5) internal successors, (55), 14 states have internal predecessors, (55), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-21 00:09:07,308 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 [] [2022-03-21 00:09:09,419 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:09:11,572 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:09:16,616 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []