/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/ntdrivers/cdaudio.i.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05ce600 [2022-02-24 02:01:02,345 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-24 02:01:02,347 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-24 02:01:02,392 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-24 02:01:02,393 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-24 02:01:02,394 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-24 02:01:02,395 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-24 02:01:02,397 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-24 02:01:02,398 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-24 02:01:02,399 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-24 02:01:02,400 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-24 02:01:02,401 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-24 02:01:02,401 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-24 02:01:02,402 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-24 02:01:02,403 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-24 02:01:02,404 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-24 02:01:02,404 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-24 02:01:02,405 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-24 02:01:02,406 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-24 02:01:02,408 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-24 02:01:02,409 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-24 02:01:02,410 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-24 02:01:02,411 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-24 02:01:02,412 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-24 02:01:02,414 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-24 02:01:02,414 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-24 02:01:02,415 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-24 02:01:02,415 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-24 02:01:02,415 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-24 02:01:02,416 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-24 02:01:02,416 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-24 02:01:02,417 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-24 02:01:02,417 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-24 02:01:02,418 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-24 02:01:02,419 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-24 02:01:02,419 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-24 02:01:02,420 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-24 02:01:02,420 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-24 02:01:02,420 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-24 02:01:02,421 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-24 02:01:02,421 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-24 02:01:02,422 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-02-24 02:01:02,429 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-24 02:01:02,430 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-24 02:01:02,431 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-24 02:01:02,431 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-24 02:01:02,431 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-24 02:01:02,431 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-24 02:01:02,431 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-24 02:01:02,431 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-24 02:01:02,432 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-24 02:01:02,432 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-24 02:01:02,432 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-24 02:01:02,432 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-24 02:01:02,432 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-24 02:01:02,433 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-24 02:01:02,433 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-24 02:01:02,433 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-24 02:01:02,433 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-24 02:01:02,433 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-24 02:01:02,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-24 02:01:02,434 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-24 02:01:02,434 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-24 02:01:02,434 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-24 02:01:02,434 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-02-24 02:01:02,434 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-24 02:01:02,622 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-24 02:01:02,646 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-24 02:01:02,648 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-24 02:01:02,649 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-24 02:01:02,651 INFO L275 PluginConnector]: CDTParser initialized [2022-02-24 02:01:02,652 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers/cdaudio.i.cil-2.c [2022-02-24 02:01:02,722 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92041c7b0/3a340959fbbd4314b178419597e456fc/FLAG435b2586d [2022-02-24 02:01:03,362 INFO L306 CDTParser]: Found 1 translation units. [2022-02-24 02:01:03,363 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/cdaudio.i.cil-2.c [2022-02-24 02:01:03,404 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92041c7b0/3a340959fbbd4314b178419597e456fc/FLAG435b2586d [2022-02-24 02:01:03,733 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92041c7b0/3a340959fbbd4314b178419597e456fc [2022-02-24 02:01:03,735 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-24 02:01:03,736 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-24 02:01:03,737 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-24 02:01:03,737 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-24 02:01:03,741 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-24 02:01:03,742 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 02:01:03" (1/1) ... [2022-02-24 02:01:03,743 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e431eab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:01:03, skipping insertion in model container [2022-02-24 02:01:03,743 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 02:01:03" (1/1) ... [2022-02-24 02:01:03,749 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-24 02:01:03,861 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-24 02:01:04,449 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/cdaudio.i.cil-2.c[90200,90213] [2022-02-24 02:01:05,115 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-24 02:01:05,125 INFO L203 MainTranslator]: Completed pre-run [2022-02-24 02:01:05,234 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/cdaudio.i.cil-2.c[90200,90213] [2022-02-24 02:01:05,535 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-24 02:01:05,560 INFO L208 MainTranslator]: Completed translation [2022-02-24 02:01:05,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:01:05 WrapperNode [2022-02-24 02:01:05,561 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-24 02:01:05,562 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-24 02:01:05,562 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-24 02:01:05,562 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-24 02:01:05,572 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:01:05" (1/1) ... [2022-02-24 02:01:05,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:01:05" (1/1) ... [2022-02-24 02:01:05,655 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:01:05" (1/1) ... [2022-02-24 02:01:05,656 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:01:05" (1/1) ... [2022-02-24 02:01:05,815 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:01:05" (1/1) ... [2022-02-24 02:01:05,846 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:01:05" (1/1) ... [2022-02-24 02:01:05,874 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:01:05" (1/1) ... [2022-02-24 02:01:05,905 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-24 02:01:05,907 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-24 02:01:05,907 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-24 02:01:05,907 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-24 02:01:05,908 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:01:05" (1/1) ... [2022-02-24 02:01:05,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-24 02:01:05,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-24 02:01:05,941 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-24 02:01:05,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-24 02:01:05,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-24 02:01:05,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-24 02:01:05,980 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-24 02:01:05,981 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlWriteRegistryValue [2022-02-24 02:01:05,981 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedIncrement [2022-02-24 02:01:05,981 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedDecrement [2022-02-24 02:01:05,981 INFO L138 BoogieDeclarations]: Found implementation of procedure MmLockPagableDataSection [2022-02-24 02:01:05,981 INFO L138 BoogieDeclarations]: Found implementation of procedure IoOpenDeviceRegistryKey [2022-02-24 02:01:05,981 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-02-24 02:01:05,981 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-02-24 02:01:05,981 INFO L138 BoogieDeclarations]: Found implementation of procedure SendSrbSynchronous [2022-02-24 02:01:05,982 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioAddDevice [2022-02-24 02:01:05,982 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSignalCompletion [2022-02-24 02:01:05,982 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioStartDevice [2022-02-24 02:01:05,983 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPnp [2022-02-24 02:01:05,983 INFO L138 BoogieDeclarations]: Found implementation of procedure DriverEntry [2022-02-24 02:01:05,983 INFO L138 BoogieDeclarations]: Found implementation of procedure NecSupportNeeded [2022-02-24 02:01:05,983 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioReadWrite [2022-02-24 02:01:05,983 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioDeviceControl [2022-02-24 02:01:05,984 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSendToNextDriver [2022-02-24 02:01:05,984 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioIsPlayActive [2022-02-24 02:01:05,984 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioNECDeviceControl [2022-02-24 02:01:05,984 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPioneerDeviceControl [2022-02-24 02:01:05,984 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioDenonDeviceControl [2022-02-24 02:01:05,984 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioHitachiSendPauseCommand [2022-02-24 02:01:05,984 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioHitachiDeviceControl [2022-02-24 02:01:05,984 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio535DeviceControl [2022-02-24 02:01:05,984 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio435DeviceControl [2022-02-24 02:01:05,984 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioAtapiDeviceControl [2022-02-24 02:01:05,984 INFO L138 BoogieDeclarations]: Found implementation of procedure HpCdrProcessLastSession [2022-02-24 02:01:05,984 INFO L138 BoogieDeclarations]: Found implementation of procedure HPCdrCompletion [2022-02-24 02:01:05,985 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioHPCdrDeviceControl [2022-02-24 02:01:05,985 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioForwardIrpSynchronous [2022-02-24 02:01:05,985 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioUnload [2022-02-24 02:01:05,985 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPower [2022-02-24 02:01:05,985 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-02-24 02:01:05,985 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-24 02:01:05,985 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_malloc [2022-02-24 02:01:05,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAcquireFastMutex [2022-02-24 02:01:05,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ExReleaseFastMutex [2022-02-24 02:01:05,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2022-02-24 02:01:05,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ExFreePool [2022-02-24 02:01:05,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertHeadList [2022-02-24 02:01:05,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertTailList [2022-02-24 02:01:05,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedRemoveHeadList [2022-02-24 02:01:05,986 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAllocateMdl [2022-02-24 02:01:05,986 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAttachDeviceToDeviceStack [2022-02-24 02:01:05,986 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildAsynchronousFsdRequest [2022-02-24 02:01:05,986 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2022-02-24 02:01:05,986 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateDevice [2022-02-24 02:01:05,986 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateSymbolicLink [2022-02-24 02:01:05,986 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteDevice [2022-02-24 02:01:05,986 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2022-02-24 02:01:05,986 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDetachDevice [2022-02-24 02:01:05,986 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeIrp [2022-02-24 02:01:05,986 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeMdl [2022-02-24 02:01:05,987 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2022-02-24 02:01:05,987 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2022-02-24 02:01:05,987 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2022-02-24 02:01:05,987 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReleaseCancelSpinLock [2022-02-24 02:01:05,987 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-02-24 02:01:05,987 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetHardErrorOrVerifyDevice [2022-02-24 02:01:05,987 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-02-24 02:01:05,987 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-02-24 02:01:05,987 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-02-24 02:01:05,987 INFO L138 BoogieDeclarations]: Found implementation of procedure KeAcquireSpinLockRaiseToDpc [2022-02-24 02:01:05,987 INFO L138 BoogieDeclarations]: Found implementation of procedure KeDelayExecutionThread [2022-02-24 02:01:05,987 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeEvent [2022-02-24 02:01:05,988 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSemaphore [2022-02-24 02:01:05,988 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSpinLock [2022-02-24 02:01:05,988 INFO L138 BoogieDeclarations]: Found implementation of procedure KeReleaseSemaphore [2022-02-24 02:01:05,988 INFO L138 BoogieDeclarations]: Found implementation of procedure KfReleaseSpinLock [2022-02-24 02:01:05,988 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-02-24 02:01:05,988 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-02-24 02:01:05,989 INFO L138 BoogieDeclarations]: Found implementation of procedure MmAllocateContiguousMemory [2022-02-24 02:01:05,989 INFO L138 BoogieDeclarations]: Found implementation of procedure MmFreeContiguousMemory [2022-02-24 02:01:05,989 INFO L138 BoogieDeclarations]: Found implementation of procedure MmMapLockedPagesSpecifyCache [2022-02-24 02:01:05,989 INFO L138 BoogieDeclarations]: Found implementation of procedure MmPageEntireDriver [2022-02-24 02:01:05,989 INFO L138 BoogieDeclarations]: Found implementation of procedure MmResetDriverPaging [2022-02-24 02:01:05,989 INFO L138 BoogieDeclarations]: Found implementation of procedure MmUnlockPages [2022-02-24 02:01:05,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2022-02-24 02:01:05,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ObfDereferenceObject [2022-02-24 02:01:05,990 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-02-24 02:01:05,990 INFO L138 BoogieDeclarations]: Found implementation of procedure PoStartNextPowerIrp [2022-02-24 02:01:05,990 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2022-02-24 02:01:05,991 INFO L138 BoogieDeclarations]: Found implementation of procedure PsTerminateSystemThread [2022-02-24 02:01:05,991 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlAnsiStringToUnicodeString [2022-02-24 02:01:05,991 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCompareMemory [2022-02-24 02:01:05,991 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCopyUnicodeString [2022-02-24 02:01:05,991 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlDeleteRegistryValue [2022-02-24 02:01:05,991 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlFreeUnicodeString [2022-02-24 02:01:05,992 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitString [2022-02-24 02:01:05,992 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitUnicodeString [2022-02-24 02:01:05,992 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlQueryRegistryValues [2022-02-24 02:01:05,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-02-24 02:01:05,992 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-02-24 02:01:05,992 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-02-24 02:01:05,992 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-24 02:01:05,992 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-24 02:01:05,992 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-24 02:01:05,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-24 02:01:05,992 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-02-24 02:01:05,992 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-24 02:01:05,993 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-02-24 02:01:05,993 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2022-02-24 02:01:05,993 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-02-24 02:01:05,993 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2022-02-24 02:01:05,993 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2022-02-24 02:01:05,993 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-02-24 02:01:05,993 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2022-02-24 02:01:05,994 INFO L130 BoogieDeclarations]: Found specification of procedure RtlQueryRegistryValues [2022-02-24 02:01:05,994 INFO L130 BoogieDeclarations]: Found specification of procedure RtlWriteRegistryValue [2022-02-24 02:01:05,994 INFO L130 BoogieDeclarations]: Found specification of procedure RtlDeleteRegistryValue [2022-02-24 02:01:05,994 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitString [2022-02-24 02:01:05,994 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitUnicodeString [2022-02-24 02:01:05,994 INFO L130 BoogieDeclarations]: Found specification of procedure RtlAnsiStringToUnicodeString [2022-02-24 02:01:05,995 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCopyUnicodeString [2022-02-24 02:01:05,995 INFO L130 BoogieDeclarations]: Found specification of procedure RtlFreeUnicodeString [2022-02-24 02:01:05,995 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCompareMemory [2022-02-24 02:01:05,995 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedIncrement [2022-02-24 02:01:05,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-24 02:01:05,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-24 02:01:05,996 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedDecrement [2022-02-24 02:01:05,996 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeEvent [2022-02-24 02:01:05,996 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-02-24 02:01:05,996 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSemaphore [2022-02-24 02:01:05,996 INFO L130 BoogieDeclarations]: Found specification of procedure KeReleaseSemaphore [2022-02-24 02:01:05,996 INFO L130 BoogieDeclarations]: Found specification of procedure KeDelayExecutionThread [2022-02-24 02:01:05,996 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-02-24 02:01:05,996 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSpinLock [2022-02-24 02:01:05,997 INFO L130 BoogieDeclarations]: Found specification of procedure KfReleaseSpinLock [2022-02-24 02:01:05,997 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2022-02-24 02:01:05,997 INFO L130 BoogieDeclarations]: Found specification of procedure ExFreePool [2022-02-24 02:01:05,997 INFO L130 BoogieDeclarations]: Found specification of procedure ExAcquireFastMutex [2022-02-24 02:01:05,997 INFO L130 BoogieDeclarations]: Found specification of procedure ExReleaseFastMutex [2022-02-24 02:01:05,997 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertHeadList [2022-02-24 02:01:05,997 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertTailList [2022-02-24 02:01:05,997 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedRemoveHeadList [2022-02-24 02:01:05,998 INFO L130 BoogieDeclarations]: Found specification of procedure MmUnlockPages [2022-02-24 02:01:05,999 INFO L130 BoogieDeclarations]: Found specification of procedure MmMapLockedPagesSpecifyCache [2022-02-24 02:01:05,999 INFO L130 BoogieDeclarations]: Found specification of procedure MmAllocateContiguousMemory [2022-02-24 02:01:06,002 INFO L130 BoogieDeclarations]: Found specification of procedure MmFreeContiguousMemory [2022-02-24 02:01:06,002 INFO L130 BoogieDeclarations]: Found specification of procedure MmLockPagableDataSection [2022-02-24 02:01:06,007 INFO L130 BoogieDeclarations]: Found specification of procedure MmResetDriverPaging [2022-02-24 02:01:06,007 INFO L130 BoogieDeclarations]: Found specification of procedure MmPageEntireDriver [2022-02-24 02:01:06,007 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2022-02-24 02:01:06,007 INFO L130 BoogieDeclarations]: Found specification of procedure PsTerminateSystemThread [2022-02-24 02:01:06,008 INFO L130 BoogieDeclarations]: Found specification of procedure IoAllocateMdl [2022-02-24 02:01:06,008 INFO L130 BoogieDeclarations]: Found specification of procedure IoAttachDeviceToDeviceStack [2022-02-24 02:01:06,008 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildAsynchronousFsdRequest [2022-02-24 02:01:06,008 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2022-02-24 02:01:06,008 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-02-24 02:01:06,008 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-02-24 02:01:06,008 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateDevice [2022-02-24 02:01:06,008 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateSymbolicLink [2022-02-24 02:01:06,008 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteDevice [2022-02-24 02:01:06,008 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2022-02-24 02:01:06,008 INFO L130 BoogieDeclarations]: Found specification of procedure IoDetachDevice [2022-02-24 02:01:06,008 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeIrp [2022-02-24 02:01:06,008 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeMdl [2022-02-24 02:01:06,008 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2022-02-24 02:01:06,008 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2022-02-24 02:01:06,009 INFO L130 BoogieDeclarations]: Found specification of procedure IoReleaseCancelSpinLock [2022-02-24 02:01:06,009 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetHardErrorOrVerifyDevice [2022-02-24 02:01:06,009 INFO L130 BoogieDeclarations]: Found specification of procedure IoOpenDeviceRegistryKey [2022-02-24 02:01:06,009 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2022-02-24 02:01:06,009 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-02-24 02:01:06,009 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-02-24 02:01:06,009 INFO L130 BoogieDeclarations]: Found specification of procedure PoStartNextPowerIrp [2022-02-24 02:01:06,009 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2022-02-24 02:01:06,009 INFO L130 BoogieDeclarations]: Found specification of procedure ObfDereferenceObject [2022-02-24 02:01:06,009 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-02-24 02:01:06,009 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-02-24 02:01:06,009 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-02-24 02:01:06,009 INFO L130 BoogieDeclarations]: Found specification of procedure DriverEntry [2022-02-24 02:01:06,009 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioReadWrite [2022-02-24 02:01:06,009 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioDeviceControl [2022-02-24 02:01:06,009 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSendToNextDriver [2022-02-24 02:01:06,010 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioIsPlayActive [2022-02-24 02:01:06,010 INFO L130 BoogieDeclarations]: Found specification of procedure NecSupportNeeded [2022-02-24 02:01:06,010 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioNECDeviceControl [2022-02-24 02:01:06,010 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPioneerDeviceControl [2022-02-24 02:01:06,010 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioDenonDeviceControl [2022-02-24 02:01:06,010 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioHitachiSendPauseCommand [2022-02-24 02:01:06,010 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioHitachiDeviceControl [2022-02-24 02:01:06,010 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio535DeviceControl [2022-02-24 02:01:06,010 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio435DeviceControl [2022-02-24 02:01:06,010 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioAtapiDeviceControl [2022-02-24 02:01:06,010 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioHPCdrDeviceControl [2022-02-24 02:01:06,010 INFO L130 BoogieDeclarations]: Found specification of procedure HpCdrProcessLastSession [2022-02-24 02:01:06,010 INFO L130 BoogieDeclarations]: Found specification of procedure HPCdrCompletion [2022-02-24 02:01:06,010 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPower [2022-02-24 02:01:06,010 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioForwardIrpSynchronous [2022-02-24 02:01:06,010 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioUnload [2022-02-24 02:01:06,011 INFO L130 BoogieDeclarations]: Found specification of procedure SendSrbSynchronous [2022-02-24 02:01:06,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-24 02:01:06,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-24 02:01:06,011 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioAddDevice [2022-02-24 02:01:06,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-02-24 02:01:06,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-02-24 02:01:06,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-02-24 02:01:06,011 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSignalCompletion [2022-02-24 02:01:06,011 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioStartDevice [2022-02-24 02:01:06,011 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPnp [2022-02-24 02:01:06,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-02-24 02:01:06,011 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-02-24 02:01:06,011 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-24 02:01:06,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-02-24 02:01:06,011 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_malloc [2022-02-24 02:01:06,012 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-02-24 02:01:06,012 INFO L130 BoogieDeclarations]: Found specification of procedure KeAcquireSpinLockRaiseToDpc [2022-02-24 02:01:06,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-24 02:01:06,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-24 02:01:06,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-24 02:01:06,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-02-24 02:01:06,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-02-24 02:01:06,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-02-24 02:01:06,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-02-24 02:01:06,723 INFO L234 CfgBuilder]: Building ICFG [2022-02-24 02:01:06,726 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-24 02:01:06,741 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:01:06,787 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:01:06,787 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:01:06,787 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:01:06,795 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:01:06,795 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:01:06,803 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:01:06,809 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:01:06,809 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:01:06,809 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:01:06,829 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:01:06,829 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:01:06,831 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:01:11,788 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume !false; [2022-02-24 02:01:11,788 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume false; [2022-02-24 02:01:11,802 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:01:11,811 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:01:11,811 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:01:11,812 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:01:11,818 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:01:11,819 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:01:11,819 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:01:11,831 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:01:11,831 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:01:11,832 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:01:11,846 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:01:11,846 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:01:11,850 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:01:16,783 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2022-02-24 02:01:16,784 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2022-02-24 02:01:16,787 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:01:16,904 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##39: assume false; [2022-02-24 02:01:16,904 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##40: assume !false; [2022-02-24 02:01:16,910 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:01:16,914 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:01:16,914 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:01:16,915 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:01:16,939 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2022-02-24 02:01:16,939 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2022-02-24 02:01:16,940 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:01:16,945 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:01:16,945 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:01:16,945 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:01:16,952 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:01:16,952 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:01:16,961 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:01:16,966 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:01:16,967 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:01:16,968 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:01:16,983 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:01:16,983 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:01:17,259 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:01:20,405 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2022-02-24 02:01:20,405 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2022-02-24 02:01:20,412 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:01:23,960 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume false; [2022-02-24 02:01:23,960 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##22: assume !false; [2022-02-24 02:01:23,965 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:01:23,983 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-02-24 02:01:23,983 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-02-24 02:01:24,001 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:01:24,005 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:01:24,005 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:01:24,042 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:01:24,090 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2022-02-24 02:01:24,090 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2022-02-24 02:01:24,162 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:01:24,166 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:01:24,166 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:01:24,252 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:01:24,255 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:01:24,255 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:01:24,256 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:01:28,594 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume !false; [2022-02-24 02:01:28,594 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume false; [2022-02-24 02:01:28,599 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:01:28,615 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2022-02-24 02:01:28,615 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2022-02-24 02:01:28,621 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:01:28,629 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-02-24 02:01:28,629 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-02-24 02:01:28,671 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:01:28,675 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:01:28,675 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:01:28,936 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:01:28,967 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2022-02-24 02:01:28,967 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2022-02-24 02:01:28,967 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L3709: #res := 0; [2022-02-24 02:01:28,967 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:01:28,972 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:01:28,972 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:01:29,009 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:01:34,367 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2022-02-24 02:01:34,368 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2022-02-24 02:01:34,427 INFO L275 CfgBuilder]: Performing block encoding [2022-02-24 02:01:34,454 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-24 02:01:34,454 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2022-02-24 02:01:34,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 02:01:34 BoogieIcfgContainer [2022-02-24 02:01:34,458 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-24 02:01:34,460 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-24 02:01:34,460 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-24 02:01:34,466 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-24 02:01:34,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 02:01:03" (1/3) ... [2022-02-24 02:01:34,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@206737e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 02:01:34, skipping insertion in model container [2022-02-24 02:01:34,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:01:05" (2/3) ... [2022-02-24 02:01:34,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@206737e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 02:01:34, skipping insertion in model container [2022-02-24 02:01:34,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 02:01:34" (3/3) ... [2022-02-24 02:01:34,470 INFO L111 eAbstractionObserver]: Analyzing ICFG cdaudio.i.cil-2.c [2022-02-24 02:01:34,475 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-24 02:01:34,475 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-24 02:01:34,525 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-24 02:01:34,532 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=JORDAN [2022-02-24 02:01:34,532 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-24 02:01:34,576 INFO L276 IsEmpty]: Start isEmpty. Operand has 1253 states, 952 states have (on average 1.5168067226890756) internal successors, (1444), 982 states have internal predecessors, (1444), 248 states have call successors, (248), 43 states have call predecessors, (248), 43 states have return successors, (248), 236 states have call predecessors, (248), 248 states have call successors, (248) [2022-02-24 02:01:34,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-24 02:01:34,583 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:01:34,583 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:01:34,584 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:01:34,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:01:34,588 INFO L85 PathProgramCache]: Analyzing trace with hash -935854329, now seen corresponding path program 1 times [2022-02-24 02:01:34,595 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:01:34,596 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [174848690] [2022-02-24 02:01:34,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:01:34,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:01:34,712 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:01:34,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:01:35,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:01:35,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:01:35,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:01:35,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:01:35,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:01:35,165 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:01:35,165 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [174848690] [2022-02-24 02:01:35,166 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [174848690] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:01:35,166 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:01:35,166 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-24 02:01:35,168 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150665421] [2022-02-24 02:01:35,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:01:35,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-24 02:01:35,171 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:01:35,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-24 02:01:35,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-02-24 02:01:35,198 INFO L87 Difference]: Start difference. First operand has 1253 states, 952 states have (on average 1.5168067226890756) internal successors, (1444), 982 states have internal predecessors, (1444), 248 states have call successors, (248), 43 states have call predecessors, (248), 43 states have return successors, (248), 236 states have call predecessors, (248), 248 states have call successors, (248) Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-02-24 02:01:40,417 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:01:43,332 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:01:46,331 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:01:48,515 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:01:50,537 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:01:52,635 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:01:54,920 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:01:57,183 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:01:59,207 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:02:02,359 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:02:02,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:02:02,594 INFO L93 Difference]: Finished difference Result 1365 states and 2147 transitions. [2022-02-24 02:02:02,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-24 02:02:02,596 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2022-02-24 02:02:02,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:02:02,613 INFO L225 Difference]: With dead ends: 1365 [2022-02-24 02:02:02,613 INFO L226 Difference]: Without dead ends: 834 [2022-02-24 02:02:02,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-24 02:02:02,624 INFO L933 BasicCegarLoop]: 920 mSDtfsCounter, 460 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 1972 mSolverCounterSat, 187 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 1302 SdHoareTripleChecker+Invalid, 2168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 1972 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.0s IncrementalHoareTripleChecker+Time [2022-02-24 02:02:02,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [484 Valid, 1302 Invalid, 2168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 1972 Invalid, 9 Unknown, 0 Unchecked, 27.0s Time] [2022-02-24 02:02:02,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2022-02-24 02:02:02,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 671. [2022-02-24 02:02:02,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 502 states have (on average 1.4601593625498008) internal successors, (733), 519 states have internal predecessors, (733), 132 states have call successors, (132), 38 states have call predecessors, (132), 36 states have return successors, (115), 115 states have call predecessors, (115), 115 states have call successors, (115) [2022-02-24 02:02:02,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 980 transitions. [2022-02-24 02:02:02,747 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 980 transitions. Word has length 20 [2022-02-24 02:02:02,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:02:02,747 INFO L470 AbstractCegarLoop]: Abstraction has 671 states and 980 transitions. [2022-02-24 02:02:02,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-02-24 02:02:02,748 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 980 transitions. [2022-02-24 02:02:02,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-24 02:02:02,749 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:02:02,749 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:02:02,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-24 02:02:02,750 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:02:02,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:02:02,751 INFO L85 PathProgramCache]: Analyzing trace with hash 3340125, now seen corresponding path program 1 times [2022-02-24 02:02:02,751 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:02:02,751 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1644262869] [2022-02-24 02:02:02,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:02:02,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:02:02,783 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:02:02,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:02:02,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:02:02,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:02:03,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:02:03,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:02:03,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:02:03,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:02:03,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:02:03,074 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:02:03,074 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1644262869] [2022-02-24 02:02:03,074 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1644262869] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:02:03,074 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:02:03,074 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-24 02:02:03,074 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142843142] [2022-02-24 02:02:03,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:02:03,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-24 02:02:03,076 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:02:03,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-24 02:02:03,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-24 02:02:03,077 INFO L87 Difference]: Start difference. First operand 671 states and 980 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-24 02:02:08,856 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:02:10,891 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:02:13,335 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:02:15,219 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:02:16,274 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:02:18,293 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:02:22,129 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:02:23,762 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:02:25,987 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:02:27,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:02:27,144 INFO L93 Difference]: Finished difference Result 1451 states and 2142 transitions. [2022-02-24 02:02:27,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-24 02:02:27,144 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2022-02-24 02:02:27,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:02:27,154 INFO L225 Difference]: With dead ends: 1451 [2022-02-24 02:02:27,154 INFO L226 Difference]: Without dead ends: 1173 [2022-02-24 02:02:27,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-02-24 02:02:27,156 INFO L933 BasicCegarLoop]: 1184 mSDtfsCounter, 1442 mSDsluCounter, 724 mSDsCounter, 0 mSdLazyCounter, 2630 mSolverCounterSat, 360 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1908 SdHoareTripleChecker+Invalid, 2994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 360 IncrementalHoareTripleChecker+Valid, 2630 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.8s IncrementalHoareTripleChecker+Time [2022-02-24 02:02:27,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1480 Valid, 1908 Invalid, 2994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [360 Valid, 2630 Invalid, 4 Unknown, 0 Unchecked, 23.8s Time] [2022-02-24 02:02:27,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2022-02-24 02:02:27,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 983. [2022-02-24 02:02:27,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 983 states, 748 states have (on average 1.4304812834224598) internal successors, (1070), 752 states have internal predecessors, (1070), 167 states have call successors, (167), 58 states have call predecessors, (167), 67 states have return successors, (200), 174 states have call predecessors, (200), 154 states have call successors, (200) [2022-02-24 02:02:27,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 983 states to 983 states and 1437 transitions. [2022-02-24 02:02:27,263 INFO L78 Accepts]: Start accepts. Automaton has 983 states and 1437 transitions. Word has length 25 [2022-02-24 02:02:27,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:02:27,263 INFO L470 AbstractCegarLoop]: Abstraction has 983 states and 1437 transitions. [2022-02-24 02:02:27,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-24 02:02:27,263 INFO L276 IsEmpty]: Start isEmpty. Operand 983 states and 1437 transitions. [2022-02-24 02:02:27,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-02-24 02:02:27,265 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:02:27,265 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:02:27,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-24 02:02:27,266 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:02:27,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:02:27,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1565080577, now seen corresponding path program 1 times [2022-02-24 02:02:27,266 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:02:27,267 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [582133867] [2022-02-24 02:02:27,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:02:27,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:02:27,280 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:02:27,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:02:27,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:02:27,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:02:27,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:02:27,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:02:27,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:02:27,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:02:27,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:02:27,512 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:02:27,512 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [582133867] [2022-02-24 02:02:27,512 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [582133867] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:02:27,512 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:02:27,513 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-24 02:02:27,513 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963882502] [2022-02-24 02:02:27,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:02:27,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-24 02:02:27,514 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:02:27,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-24 02:02:27,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-24 02:02:27,515 INFO L87 Difference]: Start difference. First operand 983 states and 1437 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-24 02:02:34,081 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:02:36,106 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:02:39,856 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:02:43,036 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:02:45,209 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:02:46,651 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:02:48,746 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:02:49,888 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:02:51,214 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:02:53,235 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:02:57,119 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:02:59,256 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:03:01,753 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:03:03,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:03:03,069 INFO L93 Difference]: Finished difference Result 2287 states and 3438 transitions. [2022-02-24 02:03:03,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-24 02:03:03,069 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 32 [2022-02-24 02:03:03,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:03:03,084 INFO L225 Difference]: With dead ends: 2287 [2022-02-24 02:03:03,084 INFO L226 Difference]: Without dead ends: 1830 [2022-02-24 02:03:03,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-02-24 02:03:03,088 INFO L933 BasicCegarLoop]: 1365 mSDtfsCounter, 1561 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 2325 mSolverCounterSat, 518 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1613 SdHoareTripleChecker+Valid, 2168 SdHoareTripleChecker+Invalid, 2850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 518 IncrementalHoareTripleChecker+Valid, 2325 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.2s IncrementalHoareTripleChecker+Time [2022-02-24 02:03:03,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1613 Valid, 2168 Invalid, 2850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [518 Valid, 2325 Invalid, 7 Unknown, 0 Unchecked, 35.2s Time] [2022-02-24 02:03:03,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1830 states. [2022-02-24 02:03:03,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1830 to 1164. [2022-02-24 02:03:03,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1164 states, 884 states have (on average 1.420814479638009) internal successors, (1256), 887 states have internal predecessors, (1256), 197 states have call successors, (197), 73 states have call predecessors, (197), 82 states have return successors, (269), 205 states have call predecessors, (269), 184 states have call successors, (269) [2022-02-24 02:03:03,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1164 states to 1164 states and 1722 transitions. [2022-02-24 02:03:03,230 INFO L78 Accepts]: Start accepts. Automaton has 1164 states and 1722 transitions. Word has length 32 [2022-02-24 02:03:03,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:03:03,230 INFO L470 AbstractCegarLoop]: Abstraction has 1164 states and 1722 transitions. [2022-02-24 02:03:03,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-24 02:03:03,231 INFO L276 IsEmpty]: Start isEmpty. Operand 1164 states and 1722 transitions. [2022-02-24 02:03:03,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-24 02:03:03,239 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:03:03,239 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:03:03,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-24 02:03:03,239 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:03:03,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:03:03,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1511122576, now seen corresponding path program 1 times [2022-02-24 02:03:03,240 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:03:03,240 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1964755868] [2022-02-24 02:03:03,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:03:03,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:03:03,254 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:03:03,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:03:03,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:03:03,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:03:03,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:03:03,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:03:03,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:03:03,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:03:03,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:03:03,506 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:03:03,506 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1964755868] [2022-02-24 02:03:03,507 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1964755868] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:03:03,507 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:03:03,507 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-24 02:03:03,507 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439550429] [2022-02-24 02:03:03,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:03:03,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-24 02:03:03,507 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:03:03,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-24 02:03:03,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-02-24 02:03:03,508 INFO L87 Difference]: Start difference. First operand 1164 states and 1722 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-02-24 02:03:10,207 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:03:12,235 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:03:14,262 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:03:17,745 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:03:19,899 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:03:21,373 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:03:23,395 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:03:25,531 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:03:27,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:03:27,338 INFO L93 Difference]: Finished difference Result 2216 states and 3337 transitions. [2022-02-24 02:03:27,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-24 02:03:27,339 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2022-02-24 02:03:27,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:03:27,347 INFO L225 Difference]: With dead ends: 2216 [2022-02-24 02:03:27,347 INFO L226 Difference]: Without dead ends: 1508 [2022-02-24 02:03:27,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2022-02-24 02:03:27,350 INFO L933 BasicCegarLoop]: 1349 mSDtfsCounter, 3259 mSDsluCounter, 1267 mSDsCounter, 0 mSdLazyCounter, 3700 mSolverCounterSat, 1178 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3290 SdHoareTripleChecker+Valid, 2616 SdHoareTripleChecker+Invalid, 4882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1178 IncrementalHoareTripleChecker+Valid, 3700 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.3s IncrementalHoareTripleChecker+Time [2022-02-24 02:03:27,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3290 Valid, 2616 Invalid, 4882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1178 Valid, 3700 Invalid, 4 Unknown, 0 Unchecked, 23.3s Time] [2022-02-24 02:03:27,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1508 states. [2022-02-24 02:03:27,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1508 to 1158. [2022-02-24 02:03:27,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1158 states, 879 states have (on average 1.4186575654152447) internal successors, (1247), 882 states have internal predecessors, (1247), 196 states have call successors, (196), 72 states have call predecessors, (196), 82 states have return successors, (267), 205 states have call predecessors, (267), 183 states have call successors, (267) [2022-02-24 02:03:27,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 1710 transitions. [2022-02-24 02:03:27,488 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 1710 transitions. Word has length 33 [2022-02-24 02:03:27,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:03:27,488 INFO L470 AbstractCegarLoop]: Abstraction has 1158 states and 1710 transitions. [2022-02-24 02:03:27,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-02-24 02:03:27,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 1710 transitions. [2022-02-24 02:03:27,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-02-24 02:03:27,491 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:03:27,491 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:03:27,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-24 02:03:27,493 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:03:27,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:03:27,493 INFO L85 PathProgramCache]: Analyzing trace with hash -296328802, now seen corresponding path program 1 times [2022-02-24 02:03:27,493 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:03:27,494 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1701458791] [2022-02-24 02:03:27,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:03:27,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:03:27,507 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:03:27,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:03:27,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:03:27,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:03:27,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:03:27,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:03:27,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:03:27,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:03:27,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:03:27,765 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:03:27,765 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1701458791] [2022-02-24 02:03:27,765 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1701458791] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:03:27,765 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:03:27,765 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-24 02:03:27,765 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756262312] [2022-02-24 02:03:27,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:03:27,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-24 02:03:27,766 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:03:27,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-24 02:03:27,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-24 02:03:27,766 INFO L87 Difference]: Start difference. First operand 1158 states and 1710 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 3 states have internal predecessors, (23), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-24 02:03:32,182 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:03:34,211 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:03:36,242 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:03:37,343 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:03:39,425 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:03:42,689 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:03:44,718 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:03:46,677 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:03:48,959 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:03:51,130 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:03:51,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:03:51,661 INFO L93 Difference]: Finished difference Result 2061 states and 3001 transitions. [2022-02-24 02:03:51,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-24 02:03:51,661 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 3 states have internal predecessors, (23), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 34 [2022-02-24 02:03:51,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:03:51,671 INFO L225 Difference]: With dead ends: 2061 [2022-02-24 02:03:51,671 INFO L226 Difference]: Without dead ends: 1892 [2022-02-24 02:03:51,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-02-24 02:03:51,673 INFO L933 BasicCegarLoop]: 1099 mSDtfsCounter, 1425 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 1505 mSolverCounterSat, 337 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1469 SdHoareTripleChecker+Valid, 1781 SdHoareTripleChecker+Invalid, 1850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 337 IncrementalHoareTripleChecker+Valid, 1505 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.6s IncrementalHoareTripleChecker+Time [2022-02-24 02:03:51,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1469 Valid, 1781 Invalid, 1850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [337 Valid, 1505 Invalid, 8 Unknown, 0 Unchecked, 23.6s Time] [2022-02-24 02:03:51,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1892 states. [2022-02-24 02:03:51,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1892 to 1623. [2022-02-24 02:03:51,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1623 states, 1251 states have (on average 1.4236610711430855) internal successors, (1781), 1252 states have internal predecessors, (1781), 254 states have call successors, (254), 100 states have call predecessors, (254), 117 states have return successors, (346), 270 states have call predecessors, (346), 244 states have call successors, (346) [2022-02-24 02:03:51,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1623 states to 1623 states and 2381 transitions. [2022-02-24 02:03:51,884 INFO L78 Accepts]: Start accepts. Automaton has 1623 states and 2381 transitions. Word has length 34 [2022-02-24 02:03:51,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:03:51,884 INFO L470 AbstractCegarLoop]: Abstraction has 1623 states and 2381 transitions. [2022-02-24 02:03:51,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 3 states have internal predecessors, (23), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-24 02:03:51,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1623 states and 2381 transitions. [2022-02-24 02:03:51,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-02-24 02:03:51,886 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:03:51,886 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:03:51,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-24 02:03:51,886 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:03:51,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:03:51,887 INFO L85 PathProgramCache]: Analyzing trace with hash -405552640, now seen corresponding path program 1 times [2022-02-24 02:03:51,887 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:03:51,887 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [307269746] [2022-02-24 02:03:51,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:03:51,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:03:51,898 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:03:51,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:03:52,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:03:52,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:03:52,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:03:52,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:03:52,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:03:52,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:03:52,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:03:52,133 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:03:52,133 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [307269746] [2022-02-24 02:03:52,133 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [307269746] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:03:52,133 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:03:52,133 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-24 02:03:52,133 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789173003] [2022-02-24 02:03:52,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:03:52,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-24 02:03:52,134 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:03:52,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-24 02:03:52,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-24 02:03:52,134 INFO L87 Difference]: Start difference. First operand 1623 states and 2381 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 3 states have internal predecessors, (24), 3 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-24 02:03:57,340 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:03:59,581 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:04:00,676 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:04:03,215 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:04:04,646 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:04:08,213 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:04:11,142 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:04:12,521 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:04:14,537 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:04:16,183 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:04:18,319 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:04:18,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:04:18,547 INFO L93 Difference]: Finished difference Result 1760 states and 2607 transitions. [2022-02-24 02:04:18,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-24 02:04:18,548 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 3 states have internal predecessors, (24), 3 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 34 [2022-02-24 02:04:18,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:04:18,557 INFO L225 Difference]: With dead ends: 1760 [2022-02-24 02:04:18,557 INFO L226 Difference]: Without dead ends: 1756 [2022-02-24 02:04:18,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-02-24 02:04:18,559 INFO L933 BasicCegarLoop]: 893 mSDtfsCounter, 472 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 1646 mSolverCounterSat, 172 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 1454 SdHoareTripleChecker+Invalid, 1825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 1646 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:04:18,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [496 Valid, 1454 Invalid, 1825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 1646 Invalid, 7 Unknown, 0 Unchecked, 26.1s Time] [2022-02-24 02:04:18,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1756 states. [2022-02-24 02:04:18,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1756 to 1622. [2022-02-24 02:04:18,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1622 states, 1251 states have (on average 1.4220623501199041) internal successors, (1779), 1251 states have internal predecessors, (1779), 253 states have call successors, (253), 100 states have call predecessors, (253), 117 states have return successors, (346), 270 states have call predecessors, (346), 244 states have call successors, (346) [2022-02-24 02:04:18,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1622 states to 1622 states and 2378 transitions. [2022-02-24 02:04:18,782 INFO L78 Accepts]: Start accepts. Automaton has 1622 states and 2378 transitions. Word has length 34 [2022-02-24 02:04:18,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:04:18,782 INFO L470 AbstractCegarLoop]: Abstraction has 1622 states and 2378 transitions. [2022-02-24 02:04:18,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 3 states have internal predecessors, (24), 3 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-24 02:04:18,783 INFO L276 IsEmpty]: Start isEmpty. Operand 1622 states and 2378 transitions. [2022-02-24 02:04:18,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-02-24 02:04:18,787 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:04:18,787 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:04:18,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-24 02:04:18,787 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:04:18,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:04:18,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1694493765, now seen corresponding path program 1 times [2022-02-24 02:04:18,788 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:04:18,788 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2092087239] [2022-02-24 02:04:18,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:04:18,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:04:18,799 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:04:18,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:04:18,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:04:18,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:04:19,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:04:19,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:04:19,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:04:19,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:04:19,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-02-24 02:04:19,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:04:19,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:04:19,083 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:04:19,084 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2092087239] [2022-02-24 02:04:19,084 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2092087239] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:04:19,084 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:04:19,084 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-24 02:04:19,084 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298420812] [2022-02-24 02:04:19,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:04:19,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-24 02:04:19,085 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:04:19,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-24 02:04:19,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-02-24 02:04:19,086 INFO L87 Difference]: Start difference. First operand 1622 states and 2378 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 4 states have internal predecessors, (31), 3 states have call successors, (11), 7 states have call predecessors, (11), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-02-24 02:04:26,818 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:04:28,842 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:04:30,867 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:04:33,576 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:04:38,615 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:04:40,641 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:04:42,661 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:04:43,959 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:04:45,980 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:04:48,068 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:04:50,870 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:04:53,421 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:04:56,431 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:04:58,239 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:04:59,933 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:05:00,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:05:00,991 INFO L93 Difference]: Finished difference Result 2729 states and 4036 transitions. [2022-02-24 02:05:00,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-24 02:05:00,992 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 4 states have internal predecessors, (31), 3 states have call successors, (11), 7 states have call predecessors, (11), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 46 [2022-02-24 02:05:00,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:05:00,999 INFO L225 Difference]: With dead ends: 2729 [2022-02-24 02:05:01,000 INFO L226 Difference]: Without dead ends: 1590 [2022-02-24 02:05:01,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2022-02-24 02:05:01,004 INFO L933 BasicCegarLoop]: 929 mSDtfsCounter, 2461 mSDsluCounter, 717 mSDsCounter, 0 mSdLazyCounter, 2600 mSolverCounterSat, 1315 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2487 SdHoareTripleChecker+Valid, 1646 SdHoareTripleChecker+Invalid, 3925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1315 IncrementalHoareTripleChecker+Valid, 2600 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.3s IncrementalHoareTripleChecker+Time [2022-02-24 02:05:01,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2487 Valid, 1646 Invalid, 3925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1315 Valid, 2600 Invalid, 10 Unknown, 0 Unchecked, 41.3s Time] [2022-02-24 02:05:01,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1590 states. [2022-02-24 02:05:01,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1590 to 1195. [2022-02-24 02:05:01,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 922 states have (on average 1.4045553145336225) internal successors, (1295), 924 states have internal predecessors, (1295), 182 states have call successors, (182), 75 states have call predecessors, (182), 90 states have return successors, (254), 195 states have call predecessors, (254), 173 states have call successors, (254) [2022-02-24 02:05:01,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1731 transitions. [2022-02-24 02:05:01,187 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1731 transitions. Word has length 46 [2022-02-24 02:05:01,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:05:01,188 INFO L470 AbstractCegarLoop]: Abstraction has 1195 states and 1731 transitions. [2022-02-24 02:05:01,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 4 states have internal predecessors, (31), 3 states have call successors, (11), 7 states have call predecessors, (11), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-02-24 02:05:01,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1731 transitions. [2022-02-24 02:05:01,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-24 02:05:01,190 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:05:01,190 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:05:01,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-24 02:05:01,191 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:05:01,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:05:01,191 INFO L85 PathProgramCache]: Analyzing trace with hash -847830418, now seen corresponding path program 1 times [2022-02-24 02:05:01,191 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:05:01,192 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [834887836] [2022-02-24 02:05:01,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:05:01,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:05:01,204 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:05:01,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:01,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:05:01,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:01,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:05:01,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:01,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:05:01,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:01,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-02-24 02:05:01,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:01,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:05:01,567 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:05:01,567 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [834887836] [2022-02-24 02:05:01,567 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [834887836] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:05:01,568 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:05:01,568 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-24 02:05:01,568 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126708608] [2022-02-24 02:05:01,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:05:01,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-24 02:05:01,568 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:05:01,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-24 02:05:01,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-02-24 02:05:01,569 INFO L87 Difference]: Start difference. First operand 1195 states and 1731 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-02-24 02:05:07,507 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:05:11,451 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:05:12,608 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:05:16,830 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:05:18,983 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:05:21,010 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:05:23,209 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:05:24,942 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:05:26,261 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:05:28,802 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:05:29,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:05:29,149 INFO L93 Difference]: Finished difference Result 2147 states and 3201 transitions. [2022-02-24 02:05:29,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-24 02:05:29,150 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 47 [2022-02-24 02:05:29,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:05:29,156 INFO L225 Difference]: With dead ends: 2147 [2022-02-24 02:05:29,157 INFO L226 Difference]: Without dead ends: 1478 [2022-02-24 02:05:29,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-02-24 02:05:29,159 INFO L933 BasicCegarLoop]: 738 mSDtfsCounter, 2285 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 1744 mSolverCounterSat, 1048 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2344 SdHoareTripleChecker+Valid, 1168 SdHoareTripleChecker+Invalid, 2798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1048 IncrementalHoareTripleChecker+Valid, 1744 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:05:29,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2344 Valid, 1168 Invalid, 2798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1048 Valid, 1744 Invalid, 6 Unknown, 0 Unchecked, 27.1s Time] [2022-02-24 02:05:29,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1478 states. [2022-02-24 02:05:29,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1478 to 1192. [2022-02-24 02:05:29,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1192 states, 920 states have (on average 1.3967391304347827) internal successors, (1285), 921 states have internal predecessors, (1285), 181 states have call successors, (181), 75 states have call predecessors, (181), 90 states have return successors, (254), 195 states have call predecessors, (254), 173 states have call successors, (254) [2022-02-24 02:05:29,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 1720 transitions. [2022-02-24 02:05:29,348 INFO L78 Accepts]: Start accepts. Automaton has 1192 states and 1720 transitions. Word has length 47 [2022-02-24 02:05:29,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:05:29,348 INFO L470 AbstractCegarLoop]: Abstraction has 1192 states and 1720 transitions. [2022-02-24 02:05:29,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-02-24 02:05:29,348 INFO L276 IsEmpty]: Start isEmpty. Operand 1192 states and 1720 transitions. [2022-02-24 02:05:29,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-24 02:05:29,351 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:05:29,351 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:05:29,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-24 02:05:29,351 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:05:29,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:05:29,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1701879472, now seen corresponding path program 1 times [2022-02-24 02:05:29,352 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:05:29,352 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1125435598] [2022-02-24 02:05:29,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:05:29,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:05:29,363 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:05:29,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:29,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:05:29,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:29,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:05:29,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:29,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:05:29,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:29,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-24 02:05:29,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:29,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 02:05:29,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:29,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:05:29,667 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:05:29,667 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1125435598] [2022-02-24 02:05:29,667 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1125435598] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:05:29,667 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:05:29,668 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-24 02:05:29,668 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288387252] [2022-02-24 02:05:29,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:05:29,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-24 02:05:29,668 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:05:29,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-24 02:05:29,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-02-24 02:05:29,669 INFO L87 Difference]: Start difference. First operand 1192 states and 1720 transitions. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 7 states have internal predecessors, (35), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-02-24 02:05:37,703 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:05:40,150 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:05:42,811 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:05:44,844 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:05:46,869 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:05:48,574 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:05:50,477 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:05:53,740 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:05:58,071 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:05:59,508 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:06:01,532 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:06:03,592 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:06:06,159 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:06:07,327 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:06:10,144 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:06:12,171 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:06:13,465 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:06:15,485 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:06:17,685 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:06:19,711 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:06:21,734 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:06:23,958 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:06:27,570 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:06:30,195 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:06:32,601 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:06:32,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:06:32,960 INFO L93 Difference]: Finished difference Result 1825 states and 2709 transitions. [2022-02-24 02:06:32,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-24 02:06:32,961 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 7 states have internal predecessors, (35), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 47 [2022-02-24 02:06:32,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:06:32,969 INFO L225 Difference]: With dead ends: 1825 [2022-02-24 02:06:32,969 INFO L226 Difference]: Without dead ends: 1764 [2022-02-24 02:06:32,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2022-02-24 02:06:32,970 INFO L933 BasicCegarLoop]: 1036 mSDtfsCounter, 2858 mSDsluCounter, 1948 mSDsCounter, 0 mSdLazyCounter, 4589 mSolverCounterSat, 1393 mSolverCounterUnsat, 18 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2890 SdHoareTripleChecker+Valid, 2984 SdHoareTripleChecker+Invalid, 6000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1393 IncrementalHoareTripleChecker+Valid, 4589 IncrementalHoareTripleChecker+Invalid, 18 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 62.4s IncrementalHoareTripleChecker+Time [2022-02-24 02:06:32,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2890 Valid, 2984 Invalid, 6000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1393 Valid, 4589 Invalid, 18 Unknown, 0 Unchecked, 62.4s Time] [2022-02-24 02:06:32,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1764 states. [2022-02-24 02:06:33,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1764 to 1264. [2022-02-24 02:06:33,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1264 states, 974 states have (on average 1.3901437371663243) internal successors, (1354), 974 states have internal predecessors, (1354), 190 states have call successors, (190), 83 states have call predecessors, (190), 99 states have return successors, (264), 206 states have call predecessors, (264), 182 states have call successors, (264) [2022-02-24 02:06:33,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 1808 transitions. [2022-02-24 02:06:33,173 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 1808 transitions. Word has length 47 [2022-02-24 02:06:33,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:06:33,173 INFO L470 AbstractCegarLoop]: Abstraction has 1264 states and 1808 transitions. [2022-02-24 02:06:33,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 7 states have internal predecessors, (35), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-02-24 02:06:33,173 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 1808 transitions. [2022-02-24 02:06:33,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-02-24 02:06:33,176 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:06:33,176 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:06:33,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-24 02:06:33,176 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:06:33,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:06:33,177 INFO L85 PathProgramCache]: Analyzing trace with hash 517296651, now seen corresponding path program 1 times [2022-02-24 02:06:33,177 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:06:33,177 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [244836020] [2022-02-24 02:06:33,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:06:33,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:06:33,188 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:06:33,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:33,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:06:33,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:33,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:06:33,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:33,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:06:33,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:33,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-24 02:06:33,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:33,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 02:06:33,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:33,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:06:33,464 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:06:33,464 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [244836020] [2022-02-24 02:06:33,464 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [244836020] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:06:33,464 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:06:33,464 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-24 02:06:33,464 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664547846] [2022-02-24 02:06:33,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:06:33,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-24 02:06:33,465 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:06:33,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-24 02:06:33,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-02-24 02:06:33,466 INFO L87 Difference]: Start difference. First operand 1264 states and 1808 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 4 states have internal predecessors, (37), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-24 02:06:41,058 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:06:43,083 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:06:45,792 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:06:48,014 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:06:51,367 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:06:53,395 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:06:55,422 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:06:56,516 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:06:58,217 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:07:00,559 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:07:04,229 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:07:05,327 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:07:07,550 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:07:09,582 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:07:11,610 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:07:13,908 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:07:16,104 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:07:18,474 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:07:21,219 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:07:21,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:07:21,887 INFO L93 Difference]: Finished difference Result 1582 states and 2358 transitions. [2022-02-24 02:07:21,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-24 02:07:21,888 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 4 states have internal predecessors, (37), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 49 [2022-02-24 02:07:21,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:07:21,893 INFO L225 Difference]: With dead ends: 1582 [2022-02-24 02:07:21,893 INFO L226 Difference]: Without dead ends: 1554 [2022-02-24 02:07:21,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-02-24 02:07:21,894 INFO L933 BasicCegarLoop]: 745 mSDtfsCounter, 1775 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 2999 mSolverCounterSat, 711 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1823 SdHoareTripleChecker+Valid, 1549 SdHoareTripleChecker+Invalid, 3726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 711 IncrementalHoareTripleChecker+Valid, 2999 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.8s IncrementalHoareTripleChecker+Time [2022-02-24 02:07:21,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1823 Valid, 1549 Invalid, 3726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [711 Valid, 2999 Invalid, 16 Unknown, 0 Unchecked, 47.8s Time] [2022-02-24 02:07:21,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2022-02-24 02:07:22,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1267. [2022-02-24 02:07:22,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1267 states, 977 states have (on average 1.3899692937563972) internal successors, (1358), 977 states have internal predecessors, (1358), 190 states have call successors, (190), 83 states have call predecessors, (190), 99 states have return successors, (264), 206 states have call predecessors, (264), 182 states have call successors, (264) [2022-02-24 02:07:22,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1267 states to 1267 states and 1812 transitions. [2022-02-24 02:07:22,122 INFO L78 Accepts]: Start accepts. Automaton has 1267 states and 1812 transitions. Word has length 49 [2022-02-24 02:07:22,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:07:22,122 INFO L470 AbstractCegarLoop]: Abstraction has 1267 states and 1812 transitions. [2022-02-24 02:07:22,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 4 states have internal predecessors, (37), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-24 02:07:22,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1267 states and 1812 transitions. [2022-02-24 02:07:22,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-02-24 02:07:22,125 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:07:22,125 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:07:22,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-02-24 02:07:22,125 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:07:22,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:07:22,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1476848055, now seen corresponding path program 1 times [2022-02-24 02:07:22,126 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:07:22,126 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [773665327] [2022-02-24 02:07:22,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:07:22,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:07:22,136 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:07:22,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:22,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:07:22,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:22,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:07:22,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:22,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:07:22,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:22,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-24 02:07:22,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:22,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 02:07:22,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:22,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:07:22,444 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:07:22,444 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [773665327] [2022-02-24 02:07:22,444 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [773665327] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:07:22,444 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:07:22,444 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-24 02:07:22,445 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589952824] [2022-02-24 02:07:22,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:07:22,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-24 02:07:22,445 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:07:22,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-24 02:07:22,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-02-24 02:07:22,446 INFO L87 Difference]: Start difference. First operand 1267 states and 1812 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 7 states have internal predecessors, (37), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-02-24 02:07:32,170 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:07:34,199 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:07:36,222 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:07:40,389 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:07:41,738 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:07:44,169 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:07:47,292 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:07:50,170 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:07:52,199 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:07:54,224 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:07:56,248 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:07:59,986 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:08:01,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:08:01,025 INFO L93 Difference]: Finished difference Result 1617 states and 2404 transitions. [2022-02-24 02:08:01,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-24 02:08:01,026 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 7 states have internal predecessors, (37), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 49 [2022-02-24 02:08:01,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:08:01,032 INFO L225 Difference]: With dead ends: 1617 [2022-02-24 02:08:01,032 INFO L226 Difference]: Without dead ends: 1511 [2022-02-24 02:08:01,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2022-02-24 02:08:01,034 INFO L933 BasicCegarLoop]: 733 mSDtfsCounter, 2841 mSDsluCounter, 1252 mSDsCounter, 0 mSdLazyCounter, 3024 mSolverCounterSat, 1340 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2889 SdHoareTripleChecker+Valid, 1985 SdHoareTripleChecker+Invalid, 4373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1340 IncrementalHoareTripleChecker+Valid, 3024 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.8s IncrementalHoareTripleChecker+Time [2022-02-24 02:08:01,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2889 Valid, 1985 Invalid, 4373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1340 Valid, 3024 Invalid, 9 Unknown, 0 Unchecked, 37.8s Time] [2022-02-24 02:08:01,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1511 states. [2022-02-24 02:08:01,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1511 to 1229. [2022-02-24 02:08:01,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 947 states have (on average 1.3970432946145723) internal successors, (1323), 954 states have internal predecessors, (1323), 190 states have call successors, (190), 83 states have call predecessors, (190), 91 states have return successors, (249), 191 states have call predecessors, (249), 182 states have call successors, (249) [2022-02-24 02:08:01,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 1762 transitions. [2022-02-24 02:08:01,286 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 1762 transitions. Word has length 49 [2022-02-24 02:08:01,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:08:01,286 INFO L470 AbstractCegarLoop]: Abstraction has 1229 states and 1762 transitions. [2022-02-24 02:08:01,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 7 states have internal predecessors, (37), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-02-24 02:08:01,286 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 1762 transitions. [2022-02-24 02:08:01,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-02-24 02:08:01,288 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:08:01,289 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:08:01,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-02-24 02:08:01,289 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:08:01,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:08:01,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1330155253, now seen corresponding path program 1 times [2022-02-24 02:08:01,289 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:08:01,289 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594757473] [2022-02-24 02:08:01,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:08:01,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:08:01,315 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:08:01,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:01,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:08:01,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:01,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:08:01,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:01,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:08:01,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:01,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-24 02:08:01,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:01,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 02:08:01,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:01,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:08:01,555 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:08:01,555 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [594757473] [2022-02-24 02:08:01,555 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [594757473] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:08:01,555 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:08:01,555 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-24 02:08:01,556 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664478196] [2022-02-24 02:08:01,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:08:01,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-24 02:08:01,556 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:08:01,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-24 02:08:01,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-02-24 02:08:01,557 INFO L87 Difference]: Start difference. First operand 1229 states and 1762 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-02-24 02:08:07,112 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:08:08,788 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:08:10,634 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:08:12,442 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:08:15,287 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:08:16,568 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:08:18,590 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:08:21,218 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:08:23,381 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:08:24,416 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:08:26,568 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:08:28,592 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:08:30,297 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:08:31,493 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:08:31,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:08:31,736 INFO L93 Difference]: Finished difference Result 1524 states and 2281 transitions. [2022-02-24 02:08:31,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-24 02:08:31,737 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 49 [2022-02-24 02:08:31,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:08:31,743 INFO L225 Difference]: With dead ends: 1524 [2022-02-24 02:08:31,743 INFO L226 Difference]: Without dead ends: 1505 [2022-02-24 02:08:31,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-02-24 02:08:31,745 INFO L933 BasicCegarLoop]: 740 mSDtfsCounter, 2279 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 1030 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2326 SdHoareTripleChecker+Valid, 1136 SdHoareTripleChecker+Invalid, 2237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1030 IncrementalHoareTripleChecker+Valid, 1200 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.6s IncrementalHoareTripleChecker+Time [2022-02-24 02:08:31,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2326 Valid, 1136 Invalid, 2237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1030 Valid, 1200 Invalid, 7 Unknown, 0 Unchecked, 29.6s Time] [2022-02-24 02:08:31,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2022-02-24 02:08:31,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 1212. [2022-02-24 02:08:31,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1212 states, 934 states have (on average 1.3982869379014988) internal successors, (1306), 940 states have internal predecessors, (1306), 189 states have call successors, (189), 83 states have call predecessors, (189), 88 states have return successors, (246), 188 states have call predecessors, (246), 182 states have call successors, (246) [2022-02-24 02:08:31,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 1741 transitions. [2022-02-24 02:08:31,961 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 1741 transitions. Word has length 49 [2022-02-24 02:08:31,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:08:31,961 INFO L470 AbstractCegarLoop]: Abstraction has 1212 states and 1741 transitions. [2022-02-24 02:08:31,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-02-24 02:08:31,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 1741 transitions. [2022-02-24 02:08:31,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-02-24 02:08:31,963 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:08:31,963 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:08:31,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-02-24 02:08:31,964 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:08:31,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:08:31,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1344500162, now seen corresponding path program 1 times [2022-02-24 02:08:31,964 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:08:31,964 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1336490949] [2022-02-24 02:08:31,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:08:31,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:08:31,975 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:08:31,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:32,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:08:32,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:32,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:08:32,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:32,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:08:32,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:32,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-24 02:08:32,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:32,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 02:08:32,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:32,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:08:32,203 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:08:32,203 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1336490949] [2022-02-24 02:08:32,204 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1336490949] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:08:32,204 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:08:32,204 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-24 02:08:32,204 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994772807] [2022-02-24 02:08:32,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:08:32,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-24 02:08:32,204 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:08:32,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-24 02:08:32,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-02-24 02:08:32,205 INFO L87 Difference]: Start difference. First operand 1212 states and 1741 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-02-24 02:08:39,547 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:08:41,582 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:08:44,087 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:08:46,112 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:08:48,146 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:08:51,416 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:08:53,439 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:08:55,468 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:08:58,099 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:09:00,956 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:09:02,983 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:09:06,158 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:09:08,505 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:09:10,911 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:09:12,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:09:12,369 INFO L93 Difference]: Finished difference Result 1829 states and 2715 transitions. [2022-02-24 02:09:12,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-24 02:09:12,369 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 49 [2022-02-24 02:09:12,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:09:12,376 INFO L225 Difference]: With dead ends: 1829 [2022-02-24 02:09:12,376 INFO L226 Difference]: Without dead ends: 1818 [2022-02-24 02:09:12,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-02-24 02:09:12,377 INFO L933 BasicCegarLoop]: 1069 mSDtfsCounter, 2063 mSDsluCounter, 1010 mSDsCounter, 0 mSdLazyCounter, 2050 mSolverCounterSat, 1091 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2118 SdHoareTripleChecker+Valid, 2079 SdHoareTripleChecker+Invalid, 3154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1091 IncrementalHoareTripleChecker+Valid, 2050 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.6s IncrementalHoareTripleChecker+Time [2022-02-24 02:09:12,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2118 Valid, 2079 Invalid, 3154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1091 Valid, 2050 Invalid, 13 Unknown, 0 Unchecked, 39.6s Time] [2022-02-24 02:09:12,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1818 states. [2022-02-24 02:09:12,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1818 to 1241. [2022-02-24 02:09:12,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1241 states, 956 states have (on average 1.3901673640167365) internal successors, (1329), 962 states have internal predecessors, (1329), 189 states have call successors, (189), 83 states have call predecessors, (189), 95 states have return successors, (253), 195 states have call predecessors, (253), 182 states have call successors, (253) [2022-02-24 02:09:12,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1241 states to 1241 states and 1771 transitions. [2022-02-24 02:09:12,679 INFO L78 Accepts]: Start accepts. Automaton has 1241 states and 1771 transitions. Word has length 49 [2022-02-24 02:09:12,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:09:12,680 INFO L470 AbstractCegarLoop]: Abstraction has 1241 states and 1771 transitions. [2022-02-24 02:09:12,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-02-24 02:09:12,680 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states and 1771 transitions. [2022-02-24 02:09:12,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-02-24 02:09:12,682 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:09:12,682 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:09:12,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-02-24 02:09:12,683 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:09:12,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:09:12,683 INFO L85 PathProgramCache]: Analyzing trace with hash -409690045, now seen corresponding path program 1 times [2022-02-24 02:09:12,683 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:09:12,683 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1577617284] [2022-02-24 02:09:12,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:09:12,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:09:12,694 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:09:12,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:12,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:09:12,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:12,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:09:12,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:12,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:09:12,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:12,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-02-24 02:09:12,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:12,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-02-24 02:09:12,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:12,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:09:12,961 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:09:12,961 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1577617284] [2022-02-24 02:09:12,961 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1577617284] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:09:12,961 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:09:12,961 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-24 02:09:12,961 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083723853] [2022-02-24 02:09:12,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:09:12,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-24 02:09:12,962 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:09:12,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-24 02:09:12,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-02-24 02:09:12,963 INFO L87 Difference]: Start difference. First operand 1241 states and 1771 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (11), 8 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-24 02:09:18,337 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:09:19,450 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:09:23,923 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:09:26,131 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:09:28,238 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:09:29,976 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:09:32,041 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:09:33,773 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:09:36,470 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:09:38,494 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:09:40,688 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:09:42,715 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:09:44,072 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:09:45,864 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:09:47,124 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:09:49,055 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:09:49,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:09:49,219 INFO L93 Difference]: Finished difference Result 2236 states and 3273 transitions. [2022-02-24 02:09:49,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-24 02:09:49,219 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (11), 8 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 54 [2022-02-24 02:09:49,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:09:49,225 INFO L225 Difference]: With dead ends: 2236 [2022-02-24 02:09:49,225 INFO L226 Difference]: Without dead ends: 1589 [2022-02-24 02:09:49,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-02-24 02:09:49,227 INFO L933 BasicCegarLoop]: 874 mSDtfsCounter, 2128 mSDsluCounter, 967 mSDsCounter, 0 mSdLazyCounter, 2027 mSolverCounterSat, 1090 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2187 SdHoareTripleChecker+Valid, 1841 SdHoareTripleChecker+Invalid, 3124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1090 IncrementalHoareTripleChecker+Valid, 2027 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.7s IncrementalHoareTripleChecker+Time [2022-02-24 02:09:49,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2187 Valid, 1841 Invalid, 3124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1090 Valid, 2027 Invalid, 7 Unknown, 0 Unchecked, 35.7s Time] [2022-02-24 02:09:49,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1589 states. [2022-02-24 02:09:49,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1589 to 1241. [2022-02-24 02:09:49,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1241 states, 956 states have (on average 1.389121338912134) internal successors, (1328), 962 states have internal predecessors, (1328), 189 states have call successors, (189), 83 states have call predecessors, (189), 95 states have return successors, (253), 195 states have call predecessors, (253), 182 states have call successors, (253) [2022-02-24 02:09:49,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1241 states to 1241 states and 1770 transitions. [2022-02-24 02:09:49,527 INFO L78 Accepts]: Start accepts. Automaton has 1241 states and 1770 transitions. Word has length 54 [2022-02-24 02:09:49,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:09:49,527 INFO L470 AbstractCegarLoop]: Abstraction has 1241 states and 1770 transitions. [2022-02-24 02:09:49,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (11), 8 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-24 02:09:49,528 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states and 1770 transitions. [2022-02-24 02:09:49,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-02-24 02:09:49,529 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:09:49,530 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:09:49,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-02-24 02:09:49,530 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:09:49,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:09:49,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1722441850, now seen corresponding path program 1 times [2022-02-24 02:09:49,530 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:09:49,530 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1500201081] [2022-02-24 02:09:49,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:09:49,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:09:49,541 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:09:49,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:49,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:09:49,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:49,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:09:49,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:49,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:09:49,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:49,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-24 02:09:49,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:49,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 02:09:49,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:49,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:09:49,818 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:09:49,818 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1500201081] [2022-02-24 02:09:49,818 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1500201081] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:09:49,818 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:09:49,818 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-24 02:09:49,818 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136747149] [2022-02-24 02:09:49,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:09:49,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-24 02:09:49,819 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:09:49,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-24 02:09:49,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-02-24 02:09:49,820 INFO L87 Difference]: Start difference. First operand 1241 states and 1770 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-02-24 02:09:58,904 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:10:02,669 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:10:05,535 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:10:07,030 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:10:09,054 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:10:11,077 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:10:13,107 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:10:15,064 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:10:17,091 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:10:20,113 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:10:22,969 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:10:24,928 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:10:30,556 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:10:31,744 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:10:33,767 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:10:36,605 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:10:38,297 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:10:39,651 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:10:40,867 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:10:42,891 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:10:44,911 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:10:48,013 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:10:50,625 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:10:54,249 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:10:58,447 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:10:58,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:10:58,743 INFO L93 Difference]: Finished difference Result 1526 states and 2271 transitions. [2022-02-24 02:10:58,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-24 02:10:58,743 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 50 [2022-02-24 02:10:58,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:10:58,749 INFO L225 Difference]: With dead ends: 1526 [2022-02-24 02:10:58,749 INFO L226 Difference]: Without dead ends: 1522 [2022-02-24 02:10:58,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-02-24 02:10:58,750 INFO L933 BasicCegarLoop]: 798 mSDtfsCounter, 1216 mSDsluCounter, 2400 mSDsCounter, 0 mSdLazyCounter, 5185 mSolverCounterSat, 749 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1243 SdHoareTripleChecker+Valid, 3198 SdHoareTripleChecker+Invalid, 5950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 749 IncrementalHoareTripleChecker+Valid, 5185 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 68.4s IncrementalHoareTripleChecker+Time [2022-02-24 02:10:58,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1243 Valid, 3198 Invalid, 5950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [749 Valid, 5185 Invalid, 16 Unknown, 0 Unchecked, 68.4s Time] [2022-02-24 02:10:58,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1522 states. [2022-02-24 02:10:59,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1522 to 1249. [2022-02-24 02:10:59,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1249 states, 964 states have (on average 1.3869294605809128) internal successors, (1337), 970 states have internal predecessors, (1337), 189 states have call successors, (189), 83 states have call predecessors, (189), 95 states have return successors, (253), 195 states have call predecessors, (253), 182 states have call successors, (253) [2022-02-24 02:10:59,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 1779 transitions. [2022-02-24 02:10:59,030 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 1779 transitions. Word has length 50 [2022-02-24 02:10:59,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:10:59,030 INFO L470 AbstractCegarLoop]: Abstraction has 1249 states and 1779 transitions. [2022-02-24 02:10:59,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-02-24 02:10:59,030 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 1779 transitions. [2022-02-24 02:10:59,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-02-24 02:10:59,032 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:10:59,033 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:10:59,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-02-24 02:10:59,033 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:10:59,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:10:59,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1722165020, now seen corresponding path program 1 times [2022-02-24 02:10:59,033 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:10:59,033 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [337912028] [2022-02-24 02:10:59,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:10:59,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:10:59,044 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:10:59,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:59,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:10:59,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:59,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:10:59,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:59,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:10:59,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:59,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-24 02:10:59,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:59,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 02:10:59,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:59,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:10:59,299 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:10:59,299 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [337912028] [2022-02-24 02:10:59,299 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [337912028] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:10:59,299 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:10:59,299 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-24 02:10:59,299 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052334378] [2022-02-24 02:10:59,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:10:59,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-24 02:10:59,300 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:10:59,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-24 02:10:59,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-02-24 02:10:59,300 INFO L87 Difference]: Start difference. First operand 1249 states and 1779 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-24 02:11:08,053 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:11:10,745 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:11:13,361 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:11:15,476 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:11:17,937 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:11:21,621 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:11:24,345 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:11:26,420 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:11:29,360 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:11:30,858 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:11:34,417 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:11:36,446 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:11:38,098 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:11:39,425 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:11:41,448 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:11:43,113 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:11:46,301 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:11:48,810 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:11:50,789 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:11:51,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:11:51,439 INFO L93 Difference]: Finished difference Result 1821 states and 2698 transitions. [2022-02-24 02:11:51,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-24 02:11:51,440 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 50 [2022-02-24 02:11:51,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:11:51,447 INFO L225 Difference]: With dead ends: 1821 [2022-02-24 02:11:51,447 INFO L226 Difference]: Without dead ends: 1786 [2022-02-24 02:11:51,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2022-02-24 02:11:51,448 INFO L933 BasicCegarLoop]: 1014 mSDtfsCounter, 2864 mSDsluCounter, 1237 mSDsCounter, 0 mSdLazyCounter, 3683 mSolverCounterSat, 1300 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2917 SdHoareTripleChecker+Valid, 2251 SdHoareTripleChecker+Invalid, 4996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1300 IncrementalHoareTripleChecker+Valid, 3683 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:11:51,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2917 Valid, 2251 Invalid, 4996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1300 Valid, 3683 Invalid, 13 Unknown, 0 Unchecked, 51.1s Time] [2022-02-24 02:11:51,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1786 states. [2022-02-24 02:11:51,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1786 to 1220. [2022-02-24 02:11:51,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1220 states, 939 states have (on average 1.3929712460063899) internal successors, (1308), 945 states have internal predecessors, (1308), 187 states have call successors, (187), 81 states have call predecessors, (187), 93 states have return successors, (251), 193 states have call predecessors, (251), 180 states have call successors, (251) [2022-02-24 02:11:51,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 1746 transitions. [2022-02-24 02:11:51,732 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 1746 transitions. Word has length 50 [2022-02-24 02:11:51,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:11:51,732 INFO L470 AbstractCegarLoop]: Abstraction has 1220 states and 1746 transitions. [2022-02-24 02:11:51,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-24 02:11:51,733 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 1746 transitions. [2022-02-24 02:11:51,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-02-24 02:11:51,735 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:11:51,736 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:11:51,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-02-24 02:11:51,736 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:11:51,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:11:51,736 INFO L85 PathProgramCache]: Analyzing trace with hash 485968886, now seen corresponding path program 1 times [2022-02-24 02:11:51,736 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:11:51,736 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1581956854] [2022-02-24 02:11:51,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:11:51,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:11:51,747 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:11:51,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:51,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:11:51,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:51,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:11:51,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:51,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:11:51,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:51,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-02-24 02:11:51,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:51,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-02-24 02:11:51,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:52,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:11:52,018 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:11:52,018 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1581956854] [2022-02-24 02:11:52,018 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1581956854] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:11:52,019 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:11:52,019 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-24 02:11:52,019 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188217552] [2022-02-24 02:11:52,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:11:52,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-24 02:11:52,019 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:11:52,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-24 02:11:52,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-02-24 02:11:52,020 INFO L87 Difference]: Start difference. First operand 1220 states and 1746 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (10), 8 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-24 02:11:57,932 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:12:00,944 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:12:03,594 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:12:06,407 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:12:08,730 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:12:09,943 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:12:13,196 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:12:16,267 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:12:18,142 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:12:20,370 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:12:22,398 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:12:24,626 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:12:26,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:12:26,654 INFO L93 Difference]: Finished difference Result 1590 states and 2355 transitions. [2022-02-24 02:12:26,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-24 02:12:26,655 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (10), 8 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 55 [2022-02-24 02:12:26,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:12:26,660 INFO L225 Difference]: With dead ends: 1590 [2022-02-24 02:12:26,660 INFO L226 Difference]: Without dead ends: 1509 [2022-02-24 02:12:26,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2022-02-24 02:12:26,661 INFO L933 BasicCegarLoop]: 750 mSDtfsCounter, 2111 mSDsluCounter, 1062 mSDsCounter, 0 mSdLazyCounter, 1985 mSolverCounterSat, 1045 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2136 SdHoareTripleChecker+Valid, 1812 SdHoareTripleChecker+Invalid, 3039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1045 IncrementalHoareTripleChecker+Valid, 1985 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.9s IncrementalHoareTripleChecker+Time [2022-02-24 02:12:26,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2136 Valid, 1812 Invalid, 3039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1045 Valid, 1985 Invalid, 9 Unknown, 0 Unchecked, 33.9s Time] [2022-02-24 02:12:26,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1509 states. [2022-02-24 02:12:26,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1509 to 1209. [2022-02-24 02:12:26,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1209 states, 932 states have (on average 1.3937768240343347) internal successors, (1299), 938 states have internal predecessors, (1299), 185 states have call successors, (185), 79 states have call predecessors, (185), 91 states have return successors, (249), 191 states have call predecessors, (249), 178 states have call successors, (249) [2022-02-24 02:12:26,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 1733 transitions. [2022-02-24 02:12:26,922 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 1733 transitions. Word has length 55 [2022-02-24 02:12:26,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:12:26,922 INFO L470 AbstractCegarLoop]: Abstraction has 1209 states and 1733 transitions. [2022-02-24 02:12:26,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (10), 8 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-24 02:12:26,922 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 1733 transitions. [2022-02-24 02:12:26,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-02-24 02:12:26,924 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:12:26,925 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:12:26,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-02-24 02:12:26,925 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:12:26,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:12:26,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1138673002, now seen corresponding path program 1 times [2022-02-24 02:12:26,925 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:12:26,925 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1882813909] [2022-02-24 02:12:26,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:12:26,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:12:26,936 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:12:26,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:27,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:12:27,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:27,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:12:27,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:27,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:12:27,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:27,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-24 02:12:27,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:27,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 02:12:27,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:27,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:12:27,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:27,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-24 02:12:27,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:27,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:12:27,245 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:12:27,245 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1882813909] [2022-02-24 02:12:27,245 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1882813909] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:12:27,245 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:12:27,245 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-24 02:12:27,245 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997776884] [2022-02-24 02:12:27,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:12:27,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-24 02:12:27,246 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:12:27,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-24 02:12:27,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-02-24 02:12:27,247 INFO L87 Difference]: Start difference. First operand 1209 states and 1733 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-24 02:12:36,291 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:12:38,972 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:12:41,006 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:12:44,028 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:12:46,647 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:12:48,046 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:12:49,596 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:12:54,036 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:12:56,066 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:12:59,764 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:13:01,510 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:13:04,438 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:13:06,544 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:13:08,565 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:13:09,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:13:09,309 INFO L93 Difference]: Finished difference Result 1561 states and 2331 transitions. [2022-02-24 02:13:09,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-24 02:13:09,309 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 58 [2022-02-24 02:13:09,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:13:09,314 INFO L225 Difference]: With dead ends: 1561 [2022-02-24 02:13:09,314 INFO L226 Difference]: Without dead ends: 1528 [2022-02-24 02:13:09,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-02-24 02:13:09,315 INFO L933 BasicCegarLoop]: 767 mSDtfsCounter, 800 mSDsluCounter, 910 mSDsCounter, 0 mSdLazyCounter, 3045 mSolverCounterSat, 538 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 832 SdHoareTripleChecker+Valid, 1677 SdHoareTripleChecker+Invalid, 3592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 538 IncrementalHoareTripleChecker+Valid, 3045 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.3s IncrementalHoareTripleChecker+Time [2022-02-24 02:13:09,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [832 Valid, 1677 Invalid, 3592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [538 Valid, 3045 Invalid, 9 Unknown, 0 Unchecked, 41.3s Time] [2022-02-24 02:13:09,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1528 states. [2022-02-24 02:13:09,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1528 to 1210. [2022-02-24 02:13:09,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1210 states, 933 states have (on average 1.3933547695605573) internal successors, (1300), 939 states have internal predecessors, (1300), 185 states have call successors, (185), 79 states have call predecessors, (185), 91 states have return successors, (249), 191 states have call predecessors, (249), 178 states have call successors, (249) [2022-02-24 02:13:09,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1734 transitions. [2022-02-24 02:13:09,596 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1734 transitions. Word has length 58 [2022-02-24 02:13:09,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:13:09,596 INFO L470 AbstractCegarLoop]: Abstraction has 1210 states and 1734 transitions. [2022-02-24 02:13:09,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-24 02:13:09,597 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1734 transitions. [2022-02-24 02:13:09,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-02-24 02:13:09,599 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:13:09,599 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:13:09,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-02-24 02:13:09,599 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:13:09,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:13:09,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1279221612, now seen corresponding path program 1 times [2022-02-24 02:13:09,600 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:13:09,600 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [12064488] [2022-02-24 02:13:09,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:13:09,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:13:09,610 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:13:09,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:09,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:13:09,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:09,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:13:09,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:09,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:13:09,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:09,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-24 02:13:09,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:09,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 02:13:09,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:09,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:13:09,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:09,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-24 02:13:09,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:09,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:13:09,938 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:13:09,938 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [12064488] [2022-02-24 02:13:09,938 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [12064488] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:13:09,938 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:13:09,938 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-24 02:13:09,938 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951110335] [2022-02-24 02:13:09,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:13:09,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-24 02:13:09,939 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:13:09,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-24 02:13:09,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-02-24 02:13:09,939 INFO L87 Difference]: Start difference. First operand 1210 states and 1734 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-02-24 02:13:17,065 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:13:20,272 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:13:22,307 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:13:24,334 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:13:26,185 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:13:27,536 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:13:29,552 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:13:32,837 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:13:35,527 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:13:37,589 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:13:38,949 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:13:41,419 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:13:43,454 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:13:45,485 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:13:46,988 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:13:49,015 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:13:51,227 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:13:54,757 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:13:55,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:13:55,658 INFO L93 Difference]: Finished difference Result 1544 states and 2309 transitions. [2022-02-24 02:13:55,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-24 02:13:55,658 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 58 [2022-02-24 02:13:55,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:13:55,662 INFO L225 Difference]: With dead ends: 1544 [2022-02-24 02:13:55,662 INFO L226 Difference]: Without dead ends: 1537 [2022-02-24 02:13:55,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2022-02-24 02:13:55,663 INFO L933 BasicCegarLoop]: 778 mSDtfsCounter, 1242 mSDsluCounter, 926 mSDsCounter, 0 mSdLazyCounter, 3108 mSolverCounterSat, 813 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1270 SdHoareTripleChecker+Valid, 1704 SdHoareTripleChecker+Invalid, 3933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 813 IncrementalHoareTripleChecker+Valid, 3108 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.9s IncrementalHoareTripleChecker+Time [2022-02-24 02:13:55,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1270 Valid, 1704 Invalid, 3933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [813 Valid, 3108 Invalid, 12 Unknown, 0 Unchecked, 44.9s Time] [2022-02-24 02:13:55,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1537 states. [2022-02-24 02:13:56,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1537 to 1224. [2022-02-24 02:13:56,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1224 states, 946 states have (on average 1.390063424947146) internal successors, (1315), 952 states have internal predecessors, (1315), 185 states have call successors, (185), 79 states have call predecessors, (185), 92 states have return successors, (250), 192 states have call predecessors, (250), 178 states have call successors, (250) [2022-02-24 02:13:56,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 1750 transitions. [2022-02-24 02:13:56,040 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 1750 transitions. Word has length 58 [2022-02-24 02:13:56,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:13:56,040 INFO L470 AbstractCegarLoop]: Abstraction has 1224 states and 1750 transitions. [2022-02-24 02:13:56,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-02-24 02:13:56,040 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 1750 transitions. [2022-02-24 02:13:56,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-02-24 02:13:56,042 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:13:56,042 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:13:56,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-02-24 02:13:56,042 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:13:56,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:13:56,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1269869534, now seen corresponding path program 1 times [2022-02-24 02:13:56,043 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:13:56,043 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [650534447] [2022-02-24 02:13:56,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:13:56,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:13:56,053 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:13:56,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:56,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:13:56,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:56,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:13:56,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:56,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:13:56,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:56,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-02-24 02:13:56,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:56,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 02:13:56,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:56,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 02:13:56,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:56,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:13:56,426 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:13:56,426 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [650534447] [2022-02-24 02:13:56,426 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [650534447] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:13:56,426 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:13:56,426 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-24 02:13:56,427 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055252912] [2022-02-24 02:13:56,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:13:56,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-24 02:13:56,427 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:13:56,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-24 02:13:56,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-02-24 02:13:56,428 INFO L87 Difference]: Start difference. First operand 1224 states and 1750 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 7 states have internal predecessors, (43), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-24 02:14:07,785 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:14:10,977 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:14:13,142 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:14:14,211 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:14:17,088 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:14:18,369 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:14:21,039 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:14:23,068 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:14:25,379 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:14:27,408 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:14:29,438 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:14:33,363 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:14:35,514 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:14:37,805 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:14:39,771 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:14:45,756 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:14:47,186 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:14:49,209 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:14:51,016 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:14:53,188 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:14:56,464 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:14:58,495 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:15:00,524 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:15:02,220 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:15:04,251 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:15:06,276 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []