/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-d966a43 [2022-01-31 22:24:06,521 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 22:24:06,522 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 22:24:06,582 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 22:24:06,583 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 22:24:06,586 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 22:24:06,588 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 22:24:06,593 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 22:24:06,594 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 22:24:06,594 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 22:24:06,595 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 22:24:06,596 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 22:24:06,596 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 22:24:06,597 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 22:24:06,598 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 22:24:06,599 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 22:24:06,599 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 22:24:06,600 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 22:24:06,601 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 22:24:06,603 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 22:24:06,604 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 22:24:06,605 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 22:24:06,606 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 22:24:06,606 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 22:24:06,609 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-31 22:24:06,609 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-31 22:24:06,609 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-31 22:24:06,610 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-31 22:24:06,610 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-31 22:24:06,611 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-31 22:24:06,611 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-31 22:24:06,612 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-31 22:24:06,613 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-31 22:24:06,613 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-31 22:24:06,614 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-31 22:24:06,615 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-31 22:24:06,615 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-31 22:24:06,615 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-31 22:24:06,616 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 22:24:06,616 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 22:24:06,617 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 22:24:06,618 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-01-31 22:24:06,625 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 22:24:06,625 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 22:24:06,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 22:24:06,626 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 22:24:06,626 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 22:24:06,626 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 22:24:06,626 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 22:24:06,627 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 22:24:06,627 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 22:24:06,627 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 22:24:06,627 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 22:24:06,627 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 22:24:06,627 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 22:24:06,627 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 22:24:06,627 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 22:24:06,628 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 22:24:06,628 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 22:24:06,628 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 22:24:06,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 22:24:06,628 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 22:24:06,628 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 22:24:06,628 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 22:24:06,628 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-01-31 22:24:06,629 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 22:24:06,820 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 22:24:06,843 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 22:24:06,846 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 22:24:06,846 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 22:24:06,851 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 22:24:06,853 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers/cdaudio.i.cil-2.c [2022-01-31 22:24:06,914 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d4934068/d2abe5b809064572b31669985610a105/FLAG6baf8b0f5 [2022-01-31 22:24:07,622 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 22:24:07,623 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/cdaudio.i.cil-2.c [2022-01-31 22:24:07,662 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d4934068/d2abe5b809064572b31669985610a105/FLAG6baf8b0f5 [2022-01-31 22:24:07,931 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d4934068/d2abe5b809064572b31669985610a105 [2022-01-31 22:24:07,933 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 22:24:07,934 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 22:24:07,935 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 22:24:07,935 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 22:24:07,938 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 22:24:07,939 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:24:07" (1/1) ... [2022-01-31 22:24:07,939 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e9d346e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:24:07, skipping insertion in model container [2022-01-31 22:24:07,940 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:24:07" (1/1) ... [2022-01-31 22:24:07,946 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 22:24:08,042 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 22:24:08,575 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] [2022-01-31 22:24:09,202 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 22:24:09,210 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 22:24:09,252 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] [2022-01-31 22:24:09,518 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 22:24:09,540 INFO L208 MainTranslator]: Completed translation [2022-01-31 22:24:09,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:24:09 WrapperNode [2022-01-31 22:24:09,541 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 22:24:09,542 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 22:24:09,542 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 22:24:09,542 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 22:24:09,550 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:24:09" (1/1) ... [2022-01-31 22:24:09,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:24:09" (1/1) ... [2022-01-31 22:24:09,637 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:24:09" (1/1) ... [2022-01-31 22:24:09,638 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:24:09" (1/1) ... [2022-01-31 22:24:09,774 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:24:09" (1/1) ... [2022-01-31 22:24:09,801 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:24:09" (1/1) ... [2022-01-31 22:24:09,826 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:24:09" (1/1) ... [2022-01-31 22:24:09,856 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 22:24:09,858 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 22:24:09,858 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 22:24:09,858 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 22:24:09,859 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:24:09" (1/1) ... [2022-01-31 22:24:09,865 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 22:24:09,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 22:24:09,889 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-31 22:24:09,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-31 22:24:09,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 22:24:09,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 22:24:09,926 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 22:24:09,926 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlWriteRegistryValue [2022-01-31 22:24:09,927 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedIncrement [2022-01-31 22:24:09,927 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedDecrement [2022-01-31 22:24:09,927 INFO L138 BoogieDeclarations]: Found implementation of procedure MmLockPagableDataSection [2022-01-31 22:24:09,927 INFO L138 BoogieDeclarations]: Found implementation of procedure IoOpenDeviceRegistryKey [2022-01-31 22:24:09,927 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-01-31 22:24:09,927 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-01-31 22:24:09,927 INFO L138 BoogieDeclarations]: Found implementation of procedure SendSrbSynchronous [2022-01-31 22:24:09,927 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioAddDevice [2022-01-31 22:24:09,928 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSignalCompletion [2022-01-31 22:24:09,928 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioStartDevice [2022-01-31 22:24:09,928 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPnp [2022-01-31 22:24:09,929 INFO L138 BoogieDeclarations]: Found implementation of procedure DriverEntry [2022-01-31 22:24:09,929 INFO L138 BoogieDeclarations]: Found implementation of procedure NecSupportNeeded [2022-01-31 22:24:09,929 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioReadWrite [2022-01-31 22:24:09,929 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioDeviceControl [2022-01-31 22:24:09,929 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSendToNextDriver [2022-01-31 22:24:09,929 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioIsPlayActive [2022-01-31 22:24:09,929 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioNECDeviceControl [2022-01-31 22:24:09,929 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPioneerDeviceControl [2022-01-31 22:24:09,929 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioDenonDeviceControl [2022-01-31 22:24:09,930 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioHitachiSendPauseCommand [2022-01-31 22:24:09,930 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioHitachiDeviceControl [2022-01-31 22:24:09,930 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio535DeviceControl [2022-01-31 22:24:09,930 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio435DeviceControl [2022-01-31 22:24:09,930 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioAtapiDeviceControl [2022-01-31 22:24:09,930 INFO L138 BoogieDeclarations]: Found implementation of procedure HpCdrProcessLastSession [2022-01-31 22:24:09,930 INFO L138 BoogieDeclarations]: Found implementation of procedure HPCdrCompletion [2022-01-31 22:24:09,930 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioHPCdrDeviceControl [2022-01-31 22:24:09,930 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioForwardIrpSynchronous [2022-01-31 22:24:09,930 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioUnload [2022-01-31 22:24:09,930 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPower [2022-01-31 22:24:09,931 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-01-31 22:24:09,931 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 22:24:09,931 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_malloc [2022-01-31 22:24:09,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAcquireFastMutex [2022-01-31 22:24:09,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ExReleaseFastMutex [2022-01-31 22:24:09,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2022-01-31 22:24:09,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ExFreePool [2022-01-31 22:24:09,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertHeadList [2022-01-31 22:24:09,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertTailList [2022-01-31 22:24:09,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedRemoveHeadList [2022-01-31 22:24:09,931 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAllocateMdl [2022-01-31 22:24:09,932 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAttachDeviceToDeviceStack [2022-01-31 22:24:09,932 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildAsynchronousFsdRequest [2022-01-31 22:24:09,932 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2022-01-31 22:24:09,932 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateDevice [2022-01-31 22:24:09,932 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateSymbolicLink [2022-01-31 22:24:09,932 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteDevice [2022-01-31 22:24:09,932 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2022-01-31 22:24:09,932 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDetachDevice [2022-01-31 22:24:09,932 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeIrp [2022-01-31 22:24:09,932 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeMdl [2022-01-31 22:24:09,932 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2022-01-31 22:24:09,932 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2022-01-31 22:24:09,932 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2022-01-31 22:24:09,933 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReleaseCancelSpinLock [2022-01-31 22:24:09,933 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-01-31 22:24:09,933 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetHardErrorOrVerifyDevice [2022-01-31 22:24:09,933 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-01-31 22:24:09,933 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-01-31 22:24:09,933 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-01-31 22:24:09,933 INFO L138 BoogieDeclarations]: Found implementation of procedure KeAcquireSpinLockRaiseToDpc [2022-01-31 22:24:09,933 INFO L138 BoogieDeclarations]: Found implementation of procedure KeDelayExecutionThread [2022-01-31 22:24:09,933 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeEvent [2022-01-31 22:24:09,933 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSemaphore [2022-01-31 22:24:09,933 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSpinLock [2022-01-31 22:24:09,934 INFO L138 BoogieDeclarations]: Found implementation of procedure KeReleaseSemaphore [2022-01-31 22:24:09,934 INFO L138 BoogieDeclarations]: Found implementation of procedure KfReleaseSpinLock [2022-01-31 22:24:09,934 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-01-31 22:24:09,934 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-01-31 22:24:09,934 INFO L138 BoogieDeclarations]: Found implementation of procedure MmAllocateContiguousMemory [2022-01-31 22:24:09,934 INFO L138 BoogieDeclarations]: Found implementation of procedure MmFreeContiguousMemory [2022-01-31 22:24:09,935 INFO L138 BoogieDeclarations]: Found implementation of procedure MmMapLockedPagesSpecifyCache [2022-01-31 22:24:09,935 INFO L138 BoogieDeclarations]: Found implementation of procedure MmPageEntireDriver [2022-01-31 22:24:09,935 INFO L138 BoogieDeclarations]: Found implementation of procedure MmResetDriverPaging [2022-01-31 22:24:09,935 INFO L138 BoogieDeclarations]: Found implementation of procedure MmUnlockPages [2022-01-31 22:24:09,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2022-01-31 22:24:09,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ObfDereferenceObject [2022-01-31 22:24:09,936 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-01-31 22:24:09,936 INFO L138 BoogieDeclarations]: Found implementation of procedure PoStartNextPowerIrp [2022-01-31 22:24:09,936 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2022-01-31 22:24:09,937 INFO L138 BoogieDeclarations]: Found implementation of procedure PsTerminateSystemThread [2022-01-31 22:24:09,937 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlAnsiStringToUnicodeString [2022-01-31 22:24:09,937 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCompareMemory [2022-01-31 22:24:09,937 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCopyUnicodeString [2022-01-31 22:24:09,937 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlDeleteRegistryValue [2022-01-31 22:24:09,937 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlFreeUnicodeString [2022-01-31 22:24:09,937 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitString [2022-01-31 22:24:09,938 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitUnicodeString [2022-01-31 22:24:09,938 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlQueryRegistryValues [2022-01-31 22:24:09,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-01-31 22:24:09,938 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-01-31 22:24:09,938 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-01-31 22:24:09,938 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 22:24:09,938 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 22:24:09,938 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 22:24:09,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 22:24:09,938 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-01-31 22:24:09,939 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 22:24:09,939 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-01-31 22:24:09,939 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2022-01-31 22:24:09,939 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-01-31 22:24:09,939 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2022-01-31 22:24:09,939 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2022-01-31 22:24:09,939 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-01-31 22:24:09,939 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2022-01-31 22:24:09,940 INFO L130 BoogieDeclarations]: Found specification of procedure RtlQueryRegistryValues [2022-01-31 22:24:09,940 INFO L130 BoogieDeclarations]: Found specification of procedure RtlWriteRegistryValue [2022-01-31 22:24:09,940 INFO L130 BoogieDeclarations]: Found specification of procedure RtlDeleteRegistryValue [2022-01-31 22:24:09,940 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitString [2022-01-31 22:24:09,940 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitUnicodeString [2022-01-31 22:24:09,941 INFO L130 BoogieDeclarations]: Found specification of procedure RtlAnsiStringToUnicodeString [2022-01-31 22:24:09,941 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCopyUnicodeString [2022-01-31 22:24:09,941 INFO L130 BoogieDeclarations]: Found specification of procedure RtlFreeUnicodeString [2022-01-31 22:24:09,942 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCompareMemory [2022-01-31 22:24:09,942 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedIncrement [2022-01-31 22:24:09,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 22:24:09,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 22:24:09,942 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedDecrement [2022-01-31 22:24:09,942 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeEvent [2022-01-31 22:24:09,942 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-01-31 22:24:09,942 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSemaphore [2022-01-31 22:24:09,942 INFO L130 BoogieDeclarations]: Found specification of procedure KeReleaseSemaphore [2022-01-31 22:24:09,942 INFO L130 BoogieDeclarations]: Found specification of procedure KeDelayExecutionThread [2022-01-31 22:24:09,943 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-01-31 22:24:09,943 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSpinLock [2022-01-31 22:24:09,943 INFO L130 BoogieDeclarations]: Found specification of procedure KfReleaseSpinLock [2022-01-31 22:24:09,943 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2022-01-31 22:24:09,943 INFO L130 BoogieDeclarations]: Found specification of procedure ExFreePool [2022-01-31 22:24:09,943 INFO L130 BoogieDeclarations]: Found specification of procedure ExAcquireFastMutex [2022-01-31 22:24:09,943 INFO L130 BoogieDeclarations]: Found specification of procedure ExReleaseFastMutex [2022-01-31 22:24:09,943 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertHeadList [2022-01-31 22:24:09,943 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertTailList [2022-01-31 22:24:09,944 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedRemoveHeadList [2022-01-31 22:24:09,945 INFO L130 BoogieDeclarations]: Found specification of procedure MmUnlockPages [2022-01-31 22:24:09,945 INFO L130 BoogieDeclarations]: Found specification of procedure MmMapLockedPagesSpecifyCache [2022-01-31 22:24:09,946 INFO L130 BoogieDeclarations]: Found specification of procedure MmAllocateContiguousMemory [2022-01-31 22:24:09,948 INFO L130 BoogieDeclarations]: Found specification of procedure MmFreeContiguousMemory [2022-01-31 22:24:09,948 INFO L130 BoogieDeclarations]: Found specification of procedure MmLockPagableDataSection [2022-01-31 22:24:09,953 INFO L130 BoogieDeclarations]: Found specification of procedure MmResetDriverPaging [2022-01-31 22:24:09,953 INFO L130 BoogieDeclarations]: Found specification of procedure MmPageEntireDriver [2022-01-31 22:24:09,953 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2022-01-31 22:24:09,953 INFO L130 BoogieDeclarations]: Found specification of procedure PsTerminateSystemThread [2022-01-31 22:24:09,954 INFO L130 BoogieDeclarations]: Found specification of procedure IoAllocateMdl [2022-01-31 22:24:09,954 INFO L130 BoogieDeclarations]: Found specification of procedure IoAttachDeviceToDeviceStack [2022-01-31 22:24:09,954 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildAsynchronousFsdRequest [2022-01-31 22:24:09,954 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2022-01-31 22:24:09,954 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-01-31 22:24:09,954 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-01-31 22:24:09,954 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateDevice [2022-01-31 22:24:09,954 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateSymbolicLink [2022-01-31 22:24:09,954 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteDevice [2022-01-31 22:24:09,954 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2022-01-31 22:24:09,954 INFO L130 BoogieDeclarations]: Found specification of procedure IoDetachDevice [2022-01-31 22:24:09,954 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeIrp [2022-01-31 22:24:09,954 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeMdl [2022-01-31 22:24:09,954 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2022-01-31 22:24:09,954 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2022-01-31 22:24:09,954 INFO L130 BoogieDeclarations]: Found specification of procedure IoReleaseCancelSpinLock [2022-01-31 22:24:09,955 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetHardErrorOrVerifyDevice [2022-01-31 22:24:09,955 INFO L130 BoogieDeclarations]: Found specification of procedure IoOpenDeviceRegistryKey [2022-01-31 22:24:09,955 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2022-01-31 22:24:09,955 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-01-31 22:24:09,955 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-01-31 22:24:09,955 INFO L130 BoogieDeclarations]: Found specification of procedure PoStartNextPowerIrp [2022-01-31 22:24:09,955 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2022-01-31 22:24:09,955 INFO L130 BoogieDeclarations]: Found specification of procedure ObfDereferenceObject [2022-01-31 22:24:09,955 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-01-31 22:24:09,955 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-01-31 22:24:09,955 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-01-31 22:24:09,955 INFO L130 BoogieDeclarations]: Found specification of procedure DriverEntry [2022-01-31 22:24:09,955 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioReadWrite [2022-01-31 22:24:09,955 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioDeviceControl [2022-01-31 22:24:09,955 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSendToNextDriver [2022-01-31 22:24:09,956 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioIsPlayActive [2022-01-31 22:24:09,956 INFO L130 BoogieDeclarations]: Found specification of procedure NecSupportNeeded [2022-01-31 22:24:09,956 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioNECDeviceControl [2022-01-31 22:24:09,956 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPioneerDeviceControl [2022-01-31 22:24:09,956 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioDenonDeviceControl [2022-01-31 22:24:09,956 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioHitachiSendPauseCommand [2022-01-31 22:24:09,956 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioHitachiDeviceControl [2022-01-31 22:24:09,956 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio535DeviceControl [2022-01-31 22:24:09,956 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio435DeviceControl [2022-01-31 22:24:09,956 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioAtapiDeviceControl [2022-01-31 22:24:09,956 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioHPCdrDeviceControl [2022-01-31 22:24:09,956 INFO L130 BoogieDeclarations]: Found specification of procedure HpCdrProcessLastSession [2022-01-31 22:24:09,956 INFO L130 BoogieDeclarations]: Found specification of procedure HPCdrCompletion [2022-01-31 22:24:09,956 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPower [2022-01-31 22:24:09,956 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioForwardIrpSynchronous [2022-01-31 22:24:09,957 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioUnload [2022-01-31 22:24:09,957 INFO L130 BoogieDeclarations]: Found specification of procedure SendSrbSynchronous [2022-01-31 22:24:09,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 22:24:09,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 22:24:09,957 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioAddDevice [2022-01-31 22:24:09,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-01-31 22:24:09,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-01-31 22:24:09,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-01-31 22:24:09,957 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSignalCompletion [2022-01-31 22:24:09,957 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioStartDevice [2022-01-31 22:24:09,957 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPnp [2022-01-31 22:24:09,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-01-31 22:24:09,957 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-01-31 22:24:09,957 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 22:24:09,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-31 22:24:09,958 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_malloc [2022-01-31 22:24:09,958 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-01-31 22:24:09,958 INFO L130 BoogieDeclarations]: Found specification of procedure KeAcquireSpinLockRaiseToDpc [2022-01-31 22:24:09,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 22:24:09,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 22:24:09,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 22:24:09,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-01-31 22:24:09,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-01-31 22:24:09,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-01-31 22:24:09,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-01-31 22:24:10,557 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 22:24:10,562 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 22:24:10,597 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:24:10,628 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 22:24:10,628 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 22:24:10,629 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:24:10,641 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 22:24:10,641 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 22:24:10,649 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:24:10,658 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 22:24:10,658 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 22:24:10,658 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:24:10,683 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 22:24:10,683 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 22:24:10,692 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:24:14,554 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume !false; [2022-01-31 22:24:14,554 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume false; [2022-01-31 22:24:14,568 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:24:14,574 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 22:24:14,574 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 22:24:14,574 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:24:14,580 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 22:24:14,580 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 22:24:14,581 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:24:14,589 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 22:24:14,589 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 22:24:14,589 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:24:14,602 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 22:24:14,602 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 22:24:14,605 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:24:19,508 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2022-01-31 22:24:19,508 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2022-01-31 22:24:19,512 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:24:19,609 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##39: assume false; [2022-01-31 22:24:19,609 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##40: assume !false; [2022-01-31 22:24:19,615 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:24:19,619 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 22:24:19,619 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 22:24:19,619 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:24:19,645 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2022-01-31 22:24:19,645 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2022-01-31 22:24:19,645 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:24:19,650 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 22:24:19,650 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 22:24:19,650 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:24:19,656 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 22:24:19,656 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 22:24:19,667 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:24:19,672 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 22:24:19,673 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 22:24:19,673 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:24:19,680 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 22:24:19,680 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 22:24:19,992 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:24:21,724 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2022-01-31 22:24:21,725 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2022-01-31 22:24:21,732 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:24:26,817 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume false; [2022-01-31 22:24:26,818 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##22: assume !false; [2022-01-31 22:24:26,822 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:24:26,840 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-01-31 22:24:26,840 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-01-31 22:24:26,861 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:24:26,865 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 22:24:26,865 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 22:24:26,892 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:24:26,940 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2022-01-31 22:24:26,940 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2022-01-31 22:24:27,075 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:24:27,079 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 22:24:27,079 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 22:24:27,189 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:24:27,193 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 22:24:27,193 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 22:24:27,194 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:24:28,446 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume !false; [2022-01-31 22:24:28,447 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume false; [2022-01-31 22:24:28,450 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:24:28,467 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2022-01-31 22:24:28,467 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2022-01-31 22:24:28,472 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:24:28,481 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-01-31 22:24:28,481 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-01-31 22:24:28,519 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:24:28,523 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 22:24:28,523 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 22:24:28,901 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:24:28,942 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2022-01-31 22:24:28,942 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2022-01-31 22:24:28,942 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L3709: #res := 0; [2022-01-31 22:24:28,943 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:24:28,947 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 22:24:28,947 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 22:24:28,983 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:24:32,010 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2022-01-31 22:24:32,010 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2022-01-31 22:24:32,055 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 22:24:32,072 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 22:24:32,072 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2022-01-31 22:24:32,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:24:32 BoogieIcfgContainer [2022-01-31 22:24:32,075 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 22:24:32,078 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 22:24:32,078 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 22:24:32,084 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 22:24:32,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 10:24:07" (1/3) ... [2022-01-31 22:24:32,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7116ee41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:24:32, skipping insertion in model container [2022-01-31 22:24:32,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:24:09" (2/3) ... [2022-01-31 22:24:32,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7116ee41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:24:32, skipping insertion in model container [2022-01-31 22:24:32,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:24:32" (3/3) ... [2022-01-31 22:24:32,086 INFO L111 eAbstractionObserver]: Analyzing ICFG cdaudio.i.cil-2.c [2022-01-31 22:24:32,090 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 22:24:32,090 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 22:24:32,141 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 22:24:32,146 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=JORDAN [2022-01-31 22:24:32,146 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 22:24:32,188 INFO L276 IsEmpty]: Start isEmpty. Operand has 1245 states, 944 states have (on average 1.5127118644067796) internal successors, (1428), 974 states have internal predecessors, (1428), 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) [2022-01-31 22:24:32,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-31 22:24:32,195 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:24:32,196 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] [2022-01-31 22:24:32,197 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:24:32,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:24:32,201 INFO L85 PathProgramCache]: Analyzing trace with hash -142779984, now seen corresponding path program 1 times [2022-01-31 22:24:32,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:24:32,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [425291416] [2022-01-31 22:24:32,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:24:32,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:24:32,305 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:24:32,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:24:32,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:24:32,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:24:32,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:24:32,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:24:32,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:24:32,745 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:24:32,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [425291416] [2022-01-31 22:24:32,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [425291416] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:24:32,747 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:24:32,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 22:24:32,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113874754] [2022-01-31 22:24:32,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:24:32,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 22:24:32,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:24:32,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 22:24:32,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-31 22:24:32,787 INFO L87 Difference]: Start difference. First operand has 1245 states, 944 states have (on average 1.5127118644067796) internal successors, (1428), 974 states have internal predecessors, (1428), 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) [2022-01-31 22:24:37,289 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:24:39,730 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:24:40,858 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:24:44,615 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:24:47,068 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:24:49,092 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:24:53,164 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:24:55,300 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:24:57,495 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:24:59,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:24:59,345 INFO L93 Difference]: Finished difference Result 1349 states and 2115 transitions. [2022-01-31 22:24:59,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 22:24:59,347 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 [2022-01-31 22:24:59,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:24:59,367 INFO L225 Difference]: With dead ends: 1349 [2022-01-31 22:24:59,367 INFO L226 Difference]: Without dead ends: 826 [2022-01-31 22:24:59,375 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 [2022-01-31 22:24:59,378 INFO L933 BasicCegarLoop]: 910 mSDtfsCounter, 450 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 1967 mSolverCounterSat, 187 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 1288 SdHoareTripleChecker+Invalid, 2161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 1967 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:24:59,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [474 Valid, 1288 Invalid, 2161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 1967 Invalid, 7 Unknown, 0 Unchecked, 26.2s Time] [2022-01-31 22:24:59,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2022-01-31 22:24:59,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 663. [2022-01-31 22:24:59,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 494 states have (on average 1.4635627530364372) internal successors, (723), 511 states have internal predecessors, (723), 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) [2022-01-31 22:24:59,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 970 transitions. [2022-01-31 22:24:59,500 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 970 transitions. Word has length 20 [2022-01-31 22:24:59,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:24:59,501 INFO L470 AbstractCegarLoop]: Abstraction has 663 states and 970 transitions. [2022-01-31 22:24:59,501 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) [2022-01-31 22:24:59,501 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 970 transitions. [2022-01-31 22:24:59,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-31 22:24:59,502 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:24:59,502 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] [2022-01-31 22:24:59,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 22:24:59,502 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:24:59,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:24:59,503 INFO L85 PathProgramCache]: Analyzing trace with hash 6317117, now seen corresponding path program 1 times [2022-01-31 22:24:59,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:24:59,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1646565304] [2022-01-31 22:24:59,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:24:59,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:24:59,517 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:24:59,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:24:59,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:24:59,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:24:59,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:24:59,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:24:59,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:24:59,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:24:59,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:24:59,753 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:24:59,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1646565304] [2022-01-31 22:24:59,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1646565304] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:24:59,753 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:24:59,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 22:24:59,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500874877] [2022-01-31 22:24:59,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:24:59,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 22:24:59,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:24:59,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 22:24:59,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-31 22:24:59,756 INFO L87 Difference]: Start difference. First operand 663 states and 970 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) [2022-01-31 22:25:05,104 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:25:06,216 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:25:08,233 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:25:12,649 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:25:14,667 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:25:16,689 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:25:18,574 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:25:21,091 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:25:23,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:25:23,836 INFO L93 Difference]: Finished difference Result 1427 states and 2112 transitions. [2022-01-31 22:25:23,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 22:25:23,836 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 [2022-01-31 22:25:23,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:25:23,846 INFO L225 Difference]: With dead ends: 1427 [2022-01-31 22:25:23,846 INFO L226 Difference]: Without dead ends: 1157 [2022-01-31 22:25:23,848 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 [2022-01-31 22:25:23,849 INFO L933 BasicCegarLoop]: 1215 mSDtfsCounter, 1408 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 2699 mSolverCounterSat, 356 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1446 SdHoareTripleChecker+Valid, 1958 SdHoareTripleChecker+Invalid, 3061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 2699 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.8s IncrementalHoareTripleChecker+Time [2022-01-31 22:25:23,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1446 Valid, 1958 Invalid, 3061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 2699 Invalid, 6 Unknown, 0 Unchecked, 23.8s Time] [2022-01-31 22:25:23,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2022-01-31 22:25:23,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 967. [2022-01-31 22:25:23,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 967 states, 732 states have (on average 1.4344262295081966) internal successors, (1050), 736 states have internal predecessors, (1050), 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) [2022-01-31 22:25:24,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1417 transitions. [2022-01-31 22:25:24,001 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1417 transitions. Word has length 25 [2022-01-31 22:25:24,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:25:24,001 INFO L470 AbstractCegarLoop]: Abstraction has 967 states and 1417 transitions. [2022-01-31 22:25:24,001 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) [2022-01-31 22:25:24,001 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1417 transitions. [2022-01-31 22:25:24,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-31 22:25:24,003 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:25:24,003 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] [2022-01-31 22:25:24,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 22:25:24,003 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:25:24,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:25:24,005 INFO L85 PathProgramCache]: Analyzing trace with hash 222296040, now seen corresponding path program 1 times [2022-01-31 22:25:24,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:25:24,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1433032345] [2022-01-31 22:25:24,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:25:24,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:25:24,018 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:25:24,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:25:24,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:25:24,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:25:24,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:25:24,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:25:24,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:25:24,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:25:24,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:25:24,254 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:25:24,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1433032345] [2022-01-31 22:25:24,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1433032345] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:25:24,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:25:24,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 22:25:24,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239789766] [2022-01-31 22:25:24,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:25:24,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 22:25:24,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:25:24,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 22:25:24,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-31 22:25:24,259 INFO L87 Difference]: Start difference. First operand 967 states and 1417 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) [2022-01-31 22:25:28,679 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:25:30,654 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:25:34,166 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:25:36,367 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:25:39,016 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:25:40,448 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:25:43,481 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:25:47,967 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:25:49,860 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:25:51,878 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:25:53,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:25:53,536 INFO L93 Difference]: Finished difference Result 2239 states and 3378 transitions. [2022-01-31 22:25:53,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 22:25:53,537 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 [2022-01-31 22:25:53,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:25:53,546 INFO L225 Difference]: With dead ends: 2239 [2022-01-31 22:25:53,546 INFO L226 Difference]: Without dead ends: 1798 [2022-01-31 22:25:53,548 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 [2022-01-31 22:25:53,549 INFO L933 BasicCegarLoop]: 1338 mSDtfsCounter, 2025 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 1405 mSolverCounterSat, 758 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2077 SdHoareTripleChecker+Valid, 2106 SdHoareTripleChecker+Invalid, 2169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 758 IncrementalHoareTripleChecker+Valid, 1405 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.0s IncrementalHoareTripleChecker+Time [2022-01-31 22:25:53,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2077 Valid, 2106 Invalid, 2169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [758 Valid, 1405 Invalid, 6 Unknown, 0 Unchecked, 29.0s Time] [2022-01-31 22:25:53,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1798 states. [2022-01-31 22:25:53,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1798 to 1132. [2022-01-31 22:25:53,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1132 states, 852 states have (on average 1.4272300469483568) internal successors, (1216), 855 states have internal predecessors, (1216), 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) [2022-01-31 22:25:53,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1132 states to 1132 states and 1682 transitions. [2022-01-31 22:25:53,682 INFO L78 Accepts]: Start accepts. Automaton has 1132 states and 1682 transitions. Word has length 32 [2022-01-31 22:25:53,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:25:53,682 INFO L470 AbstractCegarLoop]: Abstraction has 1132 states and 1682 transitions. [2022-01-31 22:25:53,683 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) [2022-01-31 22:25:53,683 INFO L276 IsEmpty]: Start isEmpty. Operand 1132 states and 1682 transitions. [2022-01-31 22:25:53,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-31 22:25:53,691 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:25:53,691 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] [2022-01-31 22:25:53,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-31 22:25:53,691 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:25:53,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:25:53,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1937023568, now seen corresponding path program 1 times [2022-01-31 22:25:53,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:25:53,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1665559220] [2022-01-31 22:25:53,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:25:53,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:25:53,704 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:25:53,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:25:53,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:25:53,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:25:53,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:25:53,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:25:53,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:25:53,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:25:53,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:25:53,973 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:25:53,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1665559220] [2022-01-31 22:25:53,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1665559220] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:25:53,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:25:53,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-31 22:25:53,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410939582] [2022-01-31 22:25:53,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:25:53,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-31 22:25:53,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:25:53,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-31 22:25:53,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-31 22:25:53,975 INFO L87 Difference]: Start difference. First operand 1132 states and 1682 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) [2022-01-31 22:25:59,600 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:26:01,629 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:26:06,368 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:26:08,388 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:26:10,413 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:26:12,454 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:26:14,536 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:26:17,745 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:26:18,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:26:18,117 INFO L93 Difference]: Finished difference Result 2168 states and 3277 transitions. [2022-01-31 22:26:18,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-31 22:26:18,117 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 [2022-01-31 22:26:18,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:26:18,125 INFO L225 Difference]: With dead ends: 2168 [2022-01-31 22:26:18,126 INFO L226 Difference]: Without dead ends: 1476 [2022-01-31 22:26:18,128 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 [2022-01-31 22:26:18,129 INFO L933 BasicCegarLoop]: 1345 mSDtfsCounter, 3188 mSDsluCounter, 1241 mSDsCounter, 0 mSdLazyCounter, 2640 mSolverCounterSat, 1174 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3219 SdHoareTripleChecker+Valid, 2586 SdHoareTripleChecker+Invalid, 3820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1174 IncrementalHoareTripleChecker+Valid, 2640 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.6s IncrementalHoareTripleChecker+Time [2022-01-31 22:26:18,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3219 Valid, 2586 Invalid, 3820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1174 Valid, 2640 Invalid, 6 Unknown, 0 Unchecked, 23.6s Time] [2022-01-31 22:26:18,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2022-01-31 22:26:18,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 1126. [2022-01-31 22:26:18,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1126 states, 847 states have (on average 1.4250295159386068) internal successors, (1207), 850 states have internal predecessors, (1207), 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) [2022-01-31 22:26:18,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 1670 transitions. [2022-01-31 22:26:18,323 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 1670 transitions. Word has length 33 [2022-01-31 22:26:18,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:26:18,323 INFO L470 AbstractCegarLoop]: Abstraction has 1126 states and 1670 transitions. [2022-01-31 22:26:18,323 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) [2022-01-31 22:26:18,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 1670 transitions. [2022-01-31 22:26:18,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-31 22:26:18,324 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:26:18,325 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] [2022-01-31 22:26:18,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-31 22:26:18,325 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:26:18,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:26:18,325 INFO L85 PathProgramCache]: Analyzing trace with hash -553612236, now seen corresponding path program 1 times [2022-01-31 22:26:18,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:26:18,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [328771746] [2022-01-31 22:26:18,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:26:18,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:26:18,336 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:26:18,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:18,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:26:18,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:18,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:26:18,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:18,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:26:18,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:18,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:26:18,581 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:26:18,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [328771746] [2022-01-31 22:26:18,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [328771746] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:26:18,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:26:18,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 22:26:18,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757617556] [2022-01-31 22:26:18,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:26:18,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 22:26:18,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:26:18,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 22:26:18,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-31 22:26:18,584 INFO L87 Difference]: Start difference. First operand 1126 states and 1670 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) [2022-01-31 22:26:21,985 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:26:23,846 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:26:26,058 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:26:27,480 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:26:30,061 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:26:30,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:26:30,209 INFO L93 Difference]: Finished difference Result 1997 states and 2921 transitions. [2022-01-31 22:26:30,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 22:26:30,209 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 [2022-01-31 22:26:30,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:26:30,218 INFO L225 Difference]: With dead ends: 1997 [2022-01-31 22:26:30,218 INFO L226 Difference]: Without dead ends: 1828 [2022-01-31 22:26:30,219 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 [2022-01-31 22:26:30,220 INFO L933 BasicCegarLoop]: 1088 mSDtfsCounter, 1859 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 541 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1903 SdHoareTripleChecker+Valid, 1768 SdHoareTripleChecker+Invalid, 1262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 541 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2022-01-31 22:26:30,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1903 Valid, 1768 Invalid, 1262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [541 Valid, 720 Invalid, 1 Unknown, 0 Unchecked, 11.3s Time] [2022-01-31 22:26:30,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1828 states. [2022-01-31 22:26:30,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1828 to 1567. [2022-01-31 22:26:30,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1567 states, 1195 states have (on average 1.4317991631799163) internal successors, (1711), 1196 states have internal predecessors, (1711), 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) [2022-01-31 22:26:30,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 2311 transitions. [2022-01-31 22:26:30,397 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 2311 transitions. Word has length 34 [2022-01-31 22:26:30,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:26:30,397 INFO L470 AbstractCegarLoop]: Abstraction has 1567 states and 2311 transitions. [2022-01-31 22:26:30,397 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) [2022-01-31 22:26:30,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 2311 transitions. [2022-01-31 22:26:30,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-31 22:26:30,398 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:26:30,399 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] [2022-01-31 22:26:30,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-31 22:26:30,399 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:26:30,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:26:30,399 INFO L85 PathProgramCache]: Analyzing trace with hash 468658322, now seen corresponding path program 1 times [2022-01-31 22:26:30,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:26:30,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [540503543] [2022-01-31 22:26:30,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:26:30,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:26:30,410 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:26:30,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:30,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:26:30,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:30,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:26:30,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:30,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:26:30,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:30,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:26:30,646 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:26:30,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [540503543] [2022-01-31 22:26:30,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [540503543] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:26:30,646 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:26:30,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 22:26:30,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255498365] [2022-01-31 22:26:30,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:26:30,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 22:26:30,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:26:30,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 22:26:30,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-31 22:26:30,648 INFO L87 Difference]: Start difference. First operand 1567 states and 2311 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) [2022-01-31 22:26:35,691 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:26:37,890 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:26:39,916 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:26:44,203 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:26:46,323 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:26:48,681 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:26:50,711 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:26:52,145 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:26:54,736 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:26:56,950 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:27:00,118 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:27:01,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:27:01,468 INFO L93 Difference]: Finished difference Result 1704 states and 2537 transitions. [2022-01-31 22:27:01,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 22:27:01,469 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 [2022-01-31 22:27:01,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:27:01,476 INFO L225 Difference]: With dead ends: 1704 [2022-01-31 22:27:01,477 INFO L226 Difference]: Without dead ends: 1700 [2022-01-31 22:27:01,477 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 [2022-01-31 22:27:01,479 INFO L933 BasicCegarLoop]: 883 mSDtfsCounter, 457 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 2187 mSolverCounterSat, 171 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 1464 SdHoareTripleChecker+Invalid, 2365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 2187 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.5s IncrementalHoareTripleChecker+Time [2022-01-31 22:27:01,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [481 Valid, 1464 Invalid, 2365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 2187 Invalid, 7 Unknown, 0 Unchecked, 30.5s Time] [2022-01-31 22:27:01,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1700 states. [2022-01-31 22:27:01,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1700 to 1566. [2022-01-31 22:27:01,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1566 states, 1195 states have (on average 1.4301255230125522) internal successors, (1709), 1195 states have internal predecessors, (1709), 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) [2022-01-31 22:27:01,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 2308 transitions. [2022-01-31 22:27:01,655 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 2308 transitions. Word has length 34 [2022-01-31 22:27:01,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:27:01,655 INFO L470 AbstractCegarLoop]: Abstraction has 1566 states and 2308 transitions. [2022-01-31 22:27:01,656 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) [2022-01-31 22:27:01,656 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 2308 transitions. [2022-01-31 22:27:01,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-31 22:27:01,659 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:27:01,659 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] [2022-01-31 22:27:01,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-31 22:27:01,660 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:27:01,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:27:01,660 INFO L85 PathProgramCache]: Analyzing trace with hash -2100233354, now seen corresponding path program 1 times [2022-01-31 22:27:01,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:27:01,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2097820647] [2022-01-31 22:27:01,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:27:01,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:27:01,671 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:27:01,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:01,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:27:01,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:01,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:27:01,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:01,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:27:01,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:01,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-01-31 22:27:01,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:01,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:27:01,928 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:27:01,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2097820647] [2022-01-31 22:27:01,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2097820647] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:27:01,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:27:01,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-31 22:27:01,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015609614] [2022-01-31 22:27:01,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:27:01,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-31 22:27:01,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:27:01,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-31 22:27:01,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-31 22:27:01,930 INFO L87 Difference]: Start difference. First operand 1566 states and 2308 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) [2022-01-31 22:27:09,781 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:27:11,807 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:27:13,824 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:27:16,022 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:27:17,092 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:27:21,065 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:27:22,701 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:27:24,239 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:27:26,259 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:27:29,321 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:27:31,359 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:27:32,668 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:27:35,940 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:27:37,575 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:27:38,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:27:38,401 INFO L93 Difference]: Finished difference Result 2633 states and 3916 transitions. [2022-01-31 22:27:38,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-31 22:27:38,402 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 [2022-01-31 22:27:38,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:27:38,413 INFO L225 Difference]: With dead ends: 2633 [2022-01-31 22:27:38,413 INFO L226 Difference]: Without dead ends: 1550 [2022-01-31 22:27:38,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2022-01-31 22:27:38,417 INFO L933 BasicCegarLoop]: 904 mSDtfsCounter, 1918 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 2548 mSolverCounterSat, 1021 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1944 SdHoareTripleChecker+Valid, 1624 SdHoareTripleChecker+Invalid, 3576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1021 IncrementalHoareTripleChecker+Valid, 2548 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.8s IncrementalHoareTripleChecker+Time [2022-01-31 22:27:38,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1944 Valid, 1624 Invalid, 3576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1021 Valid, 2548 Invalid, 7 Unknown, 0 Unchecked, 35.8s Time] [2022-01-31 22:27:38,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1550 states. [2022-01-31 22:27:38,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1550 to 1155. [2022-01-31 22:27:38,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 882 states have (on average 1.41156462585034) internal successors, (1245), 884 states have internal predecessors, (1245), 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) [2022-01-31 22:27:38,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1681 transitions. [2022-01-31 22:27:38,614 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1681 transitions. Word has length 46 [2022-01-31 22:27:38,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:27:38,615 INFO L470 AbstractCegarLoop]: Abstraction has 1155 states and 1681 transitions. [2022-01-31 22:27:38,615 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) [2022-01-31 22:27:38,615 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1681 transitions. [2022-01-31 22:27:38,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-31 22:27:38,617 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:27:38,617 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] [2022-01-31 22:27:38,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-31 22:27:38,617 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:27:38,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:27:38,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1935652398, now seen corresponding path program 1 times [2022-01-31 22:27:38,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:27:38,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1510239623] [2022-01-31 22:27:38,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:27:38,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:27:38,631 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:27:38,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:38,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:27:38,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:38,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:27:38,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:38,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:27:38,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:38,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 22:27:38,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:38,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:27:38,938 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:27:38,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1510239623] [2022-01-31 22:27:38,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1510239623] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:27:38,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:27:38,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-31 22:27:38,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400318786] [2022-01-31 22:27:38,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:27:38,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-31 22:27:38,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:27:38,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-31 22:27:38,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-01-31 22:27:38,939 INFO L87 Difference]: Start difference. First operand 1155 states and 1681 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) [2022-01-31 22:27:44,212 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:27:47,130 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:27:49,144 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:27:51,483 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:27:54,197 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:27:55,399 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:27:57,467 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:27:59,839 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:28:01,861 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:28:03,887 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:28:08,206 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:28:11,205 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:28:13,236 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:28:13,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:28:13,516 INFO L93 Difference]: Finished difference Result 2083 states and 3121 transitions. [2022-01-31 22:28:13,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-31 22:28:13,516 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 [2022-01-31 22:28:13,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:28:13,523 INFO L225 Difference]: With dead ends: 2083 [2022-01-31 22:28:13,523 INFO L226 Difference]: Without dead ends: 1438 [2022-01-31 22:28:13,525 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 [2022-01-31 22:28:13,526 INFO L933 BasicCegarLoop]: 723 mSDtfsCounter, 2264 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 1735 mSolverCounterSat, 1054 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2323 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 2798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1054 IncrementalHoareTripleChecker+Valid, 1735 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:28:13,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2323 Valid, 1153 Invalid, 2798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1054 Valid, 1735 Invalid, 9 Unknown, 0 Unchecked, 34.1s Time] [2022-01-31 22:28:13,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1438 states. [2022-01-31 22:28:13,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1438 to 1152. [2022-01-31 22:28:13,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1152 states, 880 states have (on average 1.4034090909090908) internal successors, (1235), 881 states have internal predecessors, (1235), 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) [2022-01-31 22:28:13,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 1670 transitions. [2022-01-31 22:28:13,744 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 1670 transitions. Word has length 47 [2022-01-31 22:28:13,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:28:13,744 INFO L470 AbstractCegarLoop]: Abstraction has 1152 states and 1670 transitions. [2022-01-31 22:28:13,745 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) [2022-01-31 22:28:13,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 1670 transitions. [2022-01-31 22:28:13,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-31 22:28:13,748 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:28:13,749 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:28:13,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-31 22:28:13,749 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:28:13,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:28:13,751 INFO L85 PathProgramCache]: Analyzing trace with hash 35541351, now seen corresponding path program 1 times [2022-01-31 22:28:13,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:28:13,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1881652328] [2022-01-31 22:28:13,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:28:13,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:28:13,763 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:28:13,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:13,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:28:13,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:13,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:28:13,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:13,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:28:13,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:13,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 22:28:13,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:14,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-31 22:28:14,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:14,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:28:14,061 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:28:14,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1881652328] [2022-01-31 22:28:14,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1881652328] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:28:14,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:28:14,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-31 22:28:14,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934878849] [2022-01-31 22:28:14,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:28:14,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-31 22:28:14,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:28:14,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-31 22:28:14,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-01-31 22:28:14,063 INFO L87 Difference]: Start difference. First operand 1152 states and 1670 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) [2022-01-31 22:28:23,883 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 [] [2022-01-31 22:28:25,907 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:28:27,933 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:28:30,150 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:28:32,983 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:28:35,002 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:28:40,786 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:28:43,225 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:28:46,040 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:28:48,062 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:28:50,084 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:28:52,101 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:28:54,348 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:28:56,374 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:28:59,411 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:29:02,302 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:29:06,782 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:29:08,232 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:29:10,324 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:29:10,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:29:10,796 INFO L93 Difference]: Finished difference Result 1777 states and 2649 transitions. [2022-01-31 22:29:10,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-31 22:29:10,797 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 [2022-01-31 22:29:10,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:29:10,807 INFO L225 Difference]: With dead ends: 1777 [2022-01-31 22:29:10,807 INFO L226 Difference]: Without dead ends: 1716 [2022-01-31 22:29:10,808 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 [2022-01-31 22:29:10,810 INFO L933 BasicCegarLoop]: 1007 mSDtfsCounter, 2836 mSDsluCounter, 2172 mSDsCounter, 0 mSdLazyCounter, 4836 mSolverCounterSat, 1404 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2868 SdHoareTripleChecker+Valid, 3179 SdHoareTripleChecker+Invalid, 6256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1404 IncrementalHoareTripleChecker+Valid, 4836 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 55.8s IncrementalHoareTripleChecker+Time [2022-01-31 22:29:10,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2868 Valid, 3179 Invalid, 6256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1404 Valid, 4836 Invalid, 16 Unknown, 0 Unchecked, 55.8s Time] [2022-01-31 22:29:10,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2022-01-31 22:29:11,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1216. [2022-01-31 22:29:11,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1216 states, 926 states have (on average 1.3974082073434124) internal successors, (1294), 926 states have internal predecessors, (1294), 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) [2022-01-31 22:29:11,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 1748 transitions. [2022-01-31 22:29:11,036 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 1748 transitions. Word has length 47 [2022-01-31 22:29:11,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:29:11,036 INFO L470 AbstractCegarLoop]: Abstraction has 1216 states and 1748 transitions. [2022-01-31 22:29:11,037 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) [2022-01-31 22:29:11,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 1748 transitions. [2022-01-31 22:29:11,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-31 22:29:11,039 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:29:11,039 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] [2022-01-31 22:29:11,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-31 22:29:11,039 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:29:11,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:29:11,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1263198338, now seen corresponding path program 1 times [2022-01-31 22:29:11,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:29:11,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079935247] [2022-01-31 22:29:11,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:29:11,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:29:11,053 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:29:11,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:29:11,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:29:11,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:29:11,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:29:11,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:29:11,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:29:11,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:29:11,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 22:29:11,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:29:11,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-31 22:29:11,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:29:11,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:29:11,290 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:29:11,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079935247] [2022-01-31 22:29:11,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1079935247] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:29:11,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:29:11,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-31 22:29:11,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542715974] [2022-01-31 22:29:11,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:29:11,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-31 22:29:11,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:29:11,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-31 22:29:11,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-01-31 22:29:11,292 INFO L87 Difference]: Start difference. First operand 1216 states and 1748 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) [2022-01-31 22:29:14,322 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:29:23,895 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:29:25,696 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:29:27,949 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:29:29,983 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:29:32,027 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:29:34,053 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:29:36,823 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:29:39,666 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:29:41,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:29:41,043 INFO L93 Difference]: Finished difference Result 1511 states and 2271 transitions. [2022-01-31 22:29:41,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 22:29:41,043 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 [2022-01-31 22:29:41,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:29:41,050 INFO L225 Difference]: With dead ends: 1511 [2022-01-31 22:29:41,050 INFO L226 Difference]: Without dead ends: 1492 [2022-01-31 22:29:41,051 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 [2022-01-31 22:29:41,051 INFO L933 BasicCegarLoop]: 730 mSDtfsCounter, 2253 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 1747 mSolverCounterSat, 1023 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2300 SdHoareTripleChecker+Valid, 1143 SdHoareTripleChecker+Invalid, 2776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1023 IncrementalHoareTripleChecker+Valid, 1747 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:29:41,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2300 Valid, 1143 Invalid, 2776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1023 Valid, 1747 Invalid, 6 Unknown, 0 Unchecked, 29.2s Time] [2022-01-31 22:29:41,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2022-01-31 22:29:41,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 1166. [2022-01-31 22:29:41,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1166 states, 888 states have (on average 1.40990990990991) internal successors, (1252), 894 states have internal predecessors, (1252), 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) [2022-01-31 22:29:41,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 1687 transitions. [2022-01-31 22:29:41,314 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 1687 transitions. Word has length 49 [2022-01-31 22:29:41,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:29:41,314 INFO L470 AbstractCegarLoop]: Abstraction has 1166 states and 1687 transitions. [2022-01-31 22:29:41,314 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) [2022-01-31 22:29:41,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 1687 transitions. [2022-01-31 22:29:41,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-31 22:29:41,316 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:29:41,316 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] [2022-01-31 22:29:41,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-31 22:29:41,317 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:29:41,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:29:41,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1248853429, now seen corresponding path program 1 times [2022-01-31 22:29:41,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:29:41,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2140450850] [2022-01-31 22:29:41,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:29:41,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:29:41,327 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:29:41,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:29:41,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:29:41,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:29:41,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:29:41,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:29:41,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:29:41,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:29:41,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 22:29:41,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:29:41,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-31 22:29:41,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:29:41,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:29:41,572 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:29:41,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2140450850] [2022-01-31 22:29:41,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2140450850] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:29:41,572 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:29:41,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-31 22:29:41,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151088555] [2022-01-31 22:29:41,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:29:41,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-31 22:29:41,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:29:41,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-31 22:29:41,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-01-31 22:29:41,574 INFO L87 Difference]: Start difference. First operand 1166 states and 1687 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) [2022-01-31 22:29:49,093 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 [] [2022-01-31 22:29:51,119 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:29:53,388 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:29:55,416 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:29:56,957 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:30:00,849 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:30:01,920 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:30:04,261 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:30:06,288 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:30:08,582 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:30:10,603 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:30:12,646 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:30:14,703 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:30:18,749 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:30:20,097 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:30:22,112 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:30:22,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:30:22,301 INFO L93 Difference]: Finished difference Result 1788 states and 2673 transitions. [2022-01-31 22:30:22,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-31 22:30:22,301 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 [2022-01-31 22:30:22,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:30:22,308 INFO L225 Difference]: With dead ends: 1788 [2022-01-31 22:30:22,308 INFO L226 Difference]: Without dead ends: 1777 [2022-01-31 22:30:22,309 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 [2022-01-31 22:30:22,310 INFO L933 BasicCegarLoop]: 1074 mSDtfsCounter, 1537 mSDsluCounter, 1092 mSDsCounter, 0 mSdLazyCounter, 2849 mSolverCounterSat, 778 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1592 SdHoareTripleChecker+Valid, 2166 SdHoareTripleChecker+Invalid, 3638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 778 IncrementalHoareTripleChecker+Valid, 2849 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:30:22,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1592 Valid, 2166 Invalid, 3638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [778 Valid, 2849 Invalid, 11 Unknown, 0 Unchecked, 40.1s Time] [2022-01-31 22:30:22,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1777 states. [2022-01-31 22:30:22,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1777 to 1216. [2022-01-31 22:30:22,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1216 states, 927 states have (on average 1.3937432578209277) internal successors, (1292), 926 states have internal predecessors, (1292), 189 states have call successors, (189), 83 states have call predecessors, (189), 99 states have return successors, (264), 206 states have call predecessors, (264), 182 states have call successors, (264) [2022-01-31 22:30:22,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 1745 transitions. [2022-01-31 22:30:22,530 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 1745 transitions. Word has length 49 [2022-01-31 22:30:22,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:30:22,530 INFO L470 AbstractCegarLoop]: Abstraction has 1216 states and 1745 transitions. [2022-01-31 22:30:22,531 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) [2022-01-31 22:30:22,531 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 1745 transitions. [2022-01-31 22:30:22,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-31 22:30:22,533 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:30:22,533 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] [2022-01-31 22:30:22,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-31 22:30:22,534 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:30:22,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:30:22,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1198661963, now seen corresponding path program 1 times [2022-01-31 22:30:22,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:30:22,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1519026419] [2022-01-31 22:30:22,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:30:22,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:30:22,545 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:30:22,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:30:22,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:30:22,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:30:22,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:30:22,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:30:22,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:30:22,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:30:22,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 22:30:22,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:30:22,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-31 22:30:22,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:30:22,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:30:22,794 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:30:22,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1519026419] [2022-01-31 22:30:22,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1519026419] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:30:22,794 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:30:22,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-31 22:30:22,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280367256] [2022-01-31 22:30:22,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:30:22,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-31 22:30:22,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:30:22,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-31 22:30:22,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-31 22:30:22,796 INFO L87 Difference]: Start difference. First operand 1216 states and 1745 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) [2022-01-31 22:30:29,567 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:30:31,592 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:30:33,795 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:30:40,750 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:30:42,774 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:30:45,139 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:30:48,138 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:30:50,197 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:30:52,569 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:30:55,334 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:30:58,836 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:30:59,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:30:59,323 INFO L93 Difference]: Finished difference Result 1530 states and 2288 transitions. [2022-01-31 22:30:59,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-31 22:30:59,324 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 [2022-01-31 22:30:59,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:30:59,329 INFO L225 Difference]: With dead ends: 1530 [2022-01-31 22:30:59,329 INFO L226 Difference]: Without dead ends: 1506 [2022-01-31 22:30:59,330 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 [2022-01-31 22:30:59,330 INFO L933 BasicCegarLoop]: 711 mSDtfsCounter, 2267 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 2385 mSolverCounterSat, 1025 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2315 SdHoareTripleChecker+Valid, 1500 SdHoareTripleChecker+Invalid, 3421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1025 IncrementalHoareTripleChecker+Valid, 2385 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.9s IncrementalHoareTripleChecker+Time [2022-01-31 22:30:59,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2315 Valid, 1500 Invalid, 3421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1025 Valid, 2385 Invalid, 11 Unknown, 0 Unchecked, 35.9s Time] [2022-01-31 22:30:59,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2022-01-31 22:30:59,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1219. [2022-01-31 22:30:59,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1219 states, 930 states have (on average 1.3935483870967742) internal successors, (1296), 929 states have internal predecessors, (1296), 189 states have call successors, (189), 83 states have call predecessors, (189), 99 states have return successors, (264), 206 states have call predecessors, (264), 182 states have call successors, (264) [2022-01-31 22:30:59,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 1749 transitions. [2022-01-31 22:30:59,599 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 1749 transitions. Word has length 49 [2022-01-31 22:30:59,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:30:59,600 INFO L470 AbstractCegarLoop]: Abstraction has 1219 states and 1749 transitions. [2022-01-31 22:30:59,600 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) [2022-01-31 22:30:59,600 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 1749 transitions. [2022-01-31 22:30:59,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-31 22:30:59,602 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:30:59,602 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] [2022-01-31 22:30:59,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-31 22:30:59,603 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:30:59,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:30:59,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1102160627, now seen corresponding path program 1 times [2022-01-31 22:30:59,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:30:59,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127816416] [2022-01-31 22:30:59,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:30:59,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:30:59,613 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:30:59,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:30:59,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:30:59,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:30:59,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:30:59,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:30:59,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:30:59,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:30:59,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 22:30:59,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:30:59,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-31 22:30:59,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:30:59,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:30:59,868 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:30:59,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127816416] [2022-01-31 22:30:59,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1127816416] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:30:59,868 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:30:59,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-31 22:30:59,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493971813] [2022-01-31 22:30:59,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:30:59,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-31 22:30:59,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:30:59,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-31 22:30:59,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-01-31 22:30:59,869 INFO L87 Difference]: Start difference. First operand 1219 states and 1749 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) [2022-01-31 22:31:09,411 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:31:12,835 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:31:15,008 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:31:17,035 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:31:18,893 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:31:23,850 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:31:26,254 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:31:30,331 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:31:32,354 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:31:33,845 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:31:35,864 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:31:38,149 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:31:41,375 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:31:45,412 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:31:48,898 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:31:49,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:31:49,167 INFO L93 Difference]: Finished difference Result 1535 states and 2292 transitions. [2022-01-31 22:31:49,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-31 22:31:49,167 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 [2022-01-31 22:31:49,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:31:49,172 INFO L225 Difference]: With dead ends: 1535 [2022-01-31 22:31:49,172 INFO L226 Difference]: Without dead ends: 1475 [2022-01-31 22:31:49,172 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 [2022-01-31 22:31:49,173 INFO L933 BasicCegarLoop]: 719 mSDtfsCounter, 2805 mSDsluCounter, 1640 mSDsCounter, 0 mSdLazyCounter, 3512 mSolverCounterSat, 1321 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2853 SdHoareTripleChecker+Valid, 2359 SdHoareTripleChecker+Invalid, 4845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1321 IncrementalHoareTripleChecker+Valid, 3512 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.5s IncrementalHoareTripleChecker+Time [2022-01-31 22:31:49,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2853 Valid, 2359 Invalid, 4845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1321 Valid, 3512 Invalid, 12 Unknown, 0 Unchecked, 48.5s Time] [2022-01-31 22:31:49,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1475 states. [2022-01-31 22:31:49,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1475 to 1193. [2022-01-31 22:31:49,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1193 states, 908 states have (on average 1.3975770925110131) internal successors, (1269), 914 states have internal predecessors, (1269), 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) [2022-01-31 22:31:49,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1193 states to 1193 states and 1711 transitions. [2022-01-31 22:31:49,413 INFO L78 Accepts]: Start accepts. Automaton has 1193 states and 1711 transitions. Word has length 49 [2022-01-31 22:31:49,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:31:49,413 INFO L470 AbstractCegarLoop]: Abstraction has 1193 states and 1711 transitions. [2022-01-31 22:31:49,414 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) [2022-01-31 22:31:49,414 INFO L276 IsEmpty]: Start isEmpty. Operand 1193 states and 1711 transitions. [2022-01-31 22:31:49,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-31 22:31:49,415 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:31:49,416 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:31:49,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-31 22:31:49,416 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:31:49,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:31:49,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1374214658, now seen corresponding path program 1 times [2022-01-31 22:31:49,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:31:49,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [366038517] [2022-01-31 22:31:49,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:31:49,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:31:49,426 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:31:49,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:31:49,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:31:49,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:31:49,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:31:49,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:31:49,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:31:49,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:31:49,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-01-31 22:31:49,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:31:49,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-31 22:31:49,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:31:49,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:31:49,643 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:31:49,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [366038517] [2022-01-31 22:31:49,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [366038517] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:31:49,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:31:49,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-31 22:31:49,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275193806] [2022-01-31 22:31:49,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:31:49,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-31 22:31:49,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:31:49,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-31 22:31:49,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-01-31 22:31:49,644 INFO L87 Difference]: Start difference. First operand 1193 states and 1711 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) [2022-01-31 22:31:56,228 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 [] [2022-01-31 22:31:58,571 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:32:00,600 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:32:02,781 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:32:04,813 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:32:08,360 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:32:10,385 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:32:11,775 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:32:13,592 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:32:15,875 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:32:18,380 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:32:21,204 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:32:24,096 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:32:25,305 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 [] [2022-01-31 22:32:25,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:32:25,421 INFO L93 Difference]: Finished difference Result 2156 states and 3173 transitions. [2022-01-31 22:32:25,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-31 22:32:25,422 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 [2022-01-31 22:32:25,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:32:25,426 INFO L225 Difference]: With dead ends: 2156 [2022-01-31 22:32:25,427 INFO L226 Difference]: Without dead ends: 1541 [2022-01-31 22:32:25,428 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 [2022-01-31 22:32:25,428 INFO L933 BasicCegarLoop]: 850 mSDtfsCounter, 1115 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 2234 mSolverCounterSat, 509 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1174 SdHoareTripleChecker+Valid, 1590 SdHoareTripleChecker+Invalid, 2751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 509 IncrementalHoareTripleChecker+Valid, 2234 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:32:25,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1174 Valid, 1590 Invalid, 2751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [509 Valid, 2234 Invalid, 8 Unknown, 0 Unchecked, 35.2s Time] [2022-01-31 22:32:25,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1541 states. [2022-01-31 22:32:25,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1541 to 1193. [2022-01-31 22:32:25,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1193 states, 908 states have (on average 1.39647577092511) internal successors, (1268), 914 states have internal predecessors, (1268), 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) [2022-01-31 22:32:25,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1193 states to 1193 states and 1710 transitions. [2022-01-31 22:32:25,695 INFO L78 Accepts]: Start accepts. Automaton has 1193 states and 1710 transitions. Word has length 54 [2022-01-31 22:32:25,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:32:25,695 INFO L470 AbstractCegarLoop]: Abstraction has 1193 states and 1710 transitions. [2022-01-31 22:32:25,695 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) [2022-01-31 22:32:25,695 INFO L276 IsEmpty]: Start isEmpty. Operand 1193 states and 1710 transitions. [2022-01-31 22:32:25,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-01-31 22:32:25,697 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:32:25,697 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] [2022-01-31 22:32:25,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-31 22:32:25,698 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:32:25,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:32:25,698 INFO L85 PathProgramCache]: Analyzing trace with hash 511746446, now seen corresponding path program 1 times [2022-01-31 22:32:25,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:32:25,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1765666438] [2022-01-31 22:32:25,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:32:25,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:32:25,707 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:32:25,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:32:25,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:32:25,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:32:25,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:32:25,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:32:25,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:32:25,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:32:25,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 22:32:25,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:32:25,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-31 22:32:25,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:32:25,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:32:25,978 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:32:25,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1765666438] [2022-01-31 22:32:25,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1765666438] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:32:25,978 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:32:25,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-31 22:32:25,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736047392] [2022-01-31 22:32:25,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:32:25,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-31 22:32:25,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:32:25,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-31 22:32:25,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-01-31 22:32:25,980 INFO L87 Difference]: Start difference. First operand 1193 states and 1710 transitions. Second operand has 11 states, 10 states have (on average 3.8) internal successors, (38), 7 states have internal predecessors, (38), 4 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-01-31 22:32:35,354 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:32:38,774 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:32:40,797 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:32:42,815 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:32:44,838 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:32:47,192 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:32:48,403 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:32:53,432 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:32:55,193 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:32:56,400 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:32:58,533 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:33:01,252 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:33:04,134 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:33:06,164 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:33:08,567 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:33:10,596 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:33:13,217 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:33:16,122 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:33:18,876 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:33:22,572 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:33:23,875 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:33:25,900 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:33:26,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:33:26,246 INFO L93 Difference]: Finished difference Result 1774 states and 2641 transitions. [2022-01-31 22:33:26,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-31 22:33:26,246 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.8) internal successors, (38), 7 states have internal predecessors, (38), 4 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 50 [2022-01-31 22:33:26,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:33:26,253 INFO L225 Difference]: With dead ends: 1774 [2022-01-31 22:33:26,253 INFO L226 Difference]: Without dead ends: 1770 [2022-01-31 22:33:26,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=152, Invalid=448, Unknown=0, NotChecked=0, Total=600 [2022-01-31 22:33:26,254 INFO L933 BasicCegarLoop]: 974 mSDtfsCounter, 2888 mSDsluCounter, 1661 mSDsCounter, 0 mSdLazyCounter, 4544 mSolverCounterSat, 1337 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2939 SdHoareTripleChecker+Valid, 2635 SdHoareTripleChecker+Invalid, 5895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1337 IncrementalHoareTripleChecker+Valid, 4544 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 59.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:33:26,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2939 Valid, 2635 Invalid, 5895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1337 Valid, 4544 Invalid, 14 Unknown, 0 Unchecked, 59.1s Time] [2022-01-31 22:33:26,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1770 states. [2022-01-31 22:33:26,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1770 to 1195. [2022-01-31 22:33:26,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 910 states have (on average 1.3956043956043955) internal successors, (1270), 916 states have internal predecessors, (1270), 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) [2022-01-31 22:33:26,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1712 transitions. [2022-01-31 22:33:26,524 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1712 transitions. Word has length 50 [2022-01-31 22:33:26,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:33:26,525 INFO L470 AbstractCegarLoop]: Abstraction has 1195 states and 1712 transitions. [2022-01-31 22:33:26,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.8) internal successors, (38), 7 states have internal predecessors, (38), 4 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-01-31 22:33:26,525 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1712 transitions. [2022-01-31 22:33:26,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-01-31 22:33:26,527 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:33:26,527 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] [2022-01-31 22:33:26,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-31 22:33:26,527 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:33:26,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:33:26,527 INFO L85 PathProgramCache]: Analyzing trace with hash 512023276, now seen corresponding path program 1 times [2022-01-31 22:33:26,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:33:26,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167208109] [2022-01-31 22:33:26,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:33:26,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:33:26,537 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:33:26,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:33:26,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:33:26,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:33:26,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:33:26,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:33:26,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:33:26,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:33:26,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 22:33:26,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:33:26,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-31 22:33:26,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:33:26,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:33:26,810 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:33:26,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [167208109] [2022-01-31 22:33:26,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [167208109] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:33:26,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:33:26,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-01-31 22:33:26,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081673298] [2022-01-31 22:33:26,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:33:26,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-31 22:33:26,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:33:26,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-31 22:33:26,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-01-31 22:33:26,811 INFO L87 Difference]: Start difference. First operand 1195 states and 1712 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) [2022-01-31 22:33:35,530 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 [] [2022-01-31 22:33:38,360 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:33:40,807 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:33:42,840 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:33:45,646 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:33:47,670 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:33:49,671 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:33:51,700 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:33:53,926 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:33:55,631 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:34:04,200 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:34:06,995 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:34:09,515 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:34:11,536 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:34:13,557 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:34:16,043 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:34:18,454 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:34:22,686 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:34:24,976 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:34:28,485 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:34:32,052 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:34:34,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:34:34,639 INFO L93 Difference]: Finished difference Result 1478 states and 2210 transitions. [2022-01-31 22:34:34,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-31 22:34:34,640 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 [2022-01-31 22:34:34,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:34:34,644 INFO L225 Difference]: With dead ends: 1478 [2022-01-31 22:34:34,645 INFO L226 Difference]: Without dead ends: 1443 [2022-01-31 22:34:34,645 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 [2022-01-31 22:34:34,646 INFO L933 BasicCegarLoop]: 786 mSDtfsCounter, 1192 mSDsluCounter, 2422 mSDsCounter, 0 mSdLazyCounter, 5628 mSolverCounterSat, 748 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 65.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1219 SdHoareTripleChecker+Valid, 3208 SdHoareTripleChecker+Invalid, 6391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 748 IncrementalHoareTripleChecker+Valid, 5628 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 67.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:34:34,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1219 Valid, 3208 Invalid, 6391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [748 Valid, 5628 Invalid, 15 Unknown, 0 Unchecked, 67.2s Time] [2022-01-31 22:34:34,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1443 states. [2022-01-31 22:34:34,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1443 to 1172. [2022-01-31 22:34:34,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1172 states, 891 states have (on average 1.4006734006734007) internal successors, (1248), 897 states have internal predecessors, (1248), 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) [2022-01-31 22:34:34,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1686 transitions. [2022-01-31 22:34:34,902 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1686 transitions. Word has length 50 [2022-01-31 22:34:34,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:34:34,903 INFO L470 AbstractCegarLoop]: Abstraction has 1172 states and 1686 transitions. [2022-01-31 22:34:34,903 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) [2022-01-31 22:34:34,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1686 transitions. [2022-01-31 22:34:34,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-31 22:34:34,905 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:34:34,905 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:34:34,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-31 22:34:34,905 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:34:34,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:34:34,905 INFO L85 PathProgramCache]: Analyzing trace with hash 2054924470, now seen corresponding path program 1 times [2022-01-31 22:34:34,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:34:34,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1774155620] [2022-01-31 22:34:34,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:34:34,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:34:34,915 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:34:34,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:34:35,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:34:35,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:34:35,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:34:35,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:34:35,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:34:35,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:34:35,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 22:34:35,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:34:35,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 22:34:35,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:34:35,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:34:35,127 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:34:35,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1774155620] [2022-01-31 22:34:35,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1774155620] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:34:35,128 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:34:35,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-31 22:34:35,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778459740] [2022-01-31 22:34:35,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:34:35,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-31 22:34:35,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:34:35,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-31 22:34:35,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-01-31 22:34:35,129 INFO L87 Difference]: Start difference. First operand 1172 states and 1686 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) [2022-01-31 22:34:41,211 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:34:43,399 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:34:48,226 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:34:51,280 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:34:53,574 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:34:55,601 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:34:57,646 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:34:59,131 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:35:01,226 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:35:03,655 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:35:04,849 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:35:06,136 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:35:07,346 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 [] [2022-01-31 22:35:07,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:35:07,454 INFO L93 Difference]: Finished difference Result 1542 states and 2295 transitions. [2022-01-31 22:35:07,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-31 22:35:07,455 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 [2022-01-31 22:35:07,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:35:07,459 INFO L225 Difference]: With dead ends: 1542 [2022-01-31 22:35:07,460 INFO L226 Difference]: Without dead ends: 1461 [2022-01-31 22:35:07,460 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 [2022-01-31 22:35:07,461 INFO L933 BasicCegarLoop]: 737 mSDtfsCounter, 2068 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 1420 mSolverCounterSat, 1053 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2093 SdHoareTripleChecker+Valid, 1784 SdHoareTripleChecker+Invalid, 2481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1053 IncrementalHoareTripleChecker+Valid, 1420 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.6s IncrementalHoareTripleChecker+Time [2022-01-31 22:35:07,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2093 Valid, 1784 Invalid, 2481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1053 Valid, 1420 Invalid, 8 Unknown, 0 Unchecked, 31.6s Time] [2022-01-31 22:35:07,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1461 states. [2022-01-31 22:35:07,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1461 to 1161. [2022-01-31 22:35:07,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1161 states, 884 states have (on average 1.4015837104072397) internal successors, (1239), 890 states have internal predecessors, (1239), 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) [2022-01-31 22:35:07,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1161 states to 1161 states and 1673 transitions. [2022-01-31 22:35:07,725 INFO L78 Accepts]: Start accepts. Automaton has 1161 states and 1673 transitions. Word has length 55 [2022-01-31 22:35:07,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:35:07,725 INFO L470 AbstractCegarLoop]: Abstraction has 1161 states and 1673 transitions. [2022-01-31 22:35:07,725 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) [2022-01-31 22:35:07,725 INFO L276 IsEmpty]: Start isEmpty. Operand 1161 states and 1673 transitions. [2022-01-31 22:35:07,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-31 22:35:07,727 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:35:07,727 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:35:07,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-31 22:35:07,728 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:35:07,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:35:07,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1636561224, now seen corresponding path program 1 times [2022-01-31 22:35:07,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:35:07,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1013207764] [2022-01-31 22:35:07,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:35:07,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:35:07,738 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:35:07,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:35:07,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:35:07,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:35:07,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:35:07,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:35:07,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:35:07,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:35:07,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-01-31 22:35:07,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:35:07,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-31 22:35:07,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:35:08,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:35:08,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:35:08,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-01-31 22:35:08,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:35:08,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:35:08,032 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:35:08,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1013207764] [2022-01-31 22:35:08,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1013207764] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:35:08,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:35:08,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-31 22:35:08,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437188196] [2022-01-31 22:35:08,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:35:08,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-31 22:35:08,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:35:08,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-31 22:35:08,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-01-31 22:35:08,033 INFO L87 Difference]: Start difference. First operand 1161 states and 1673 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) [2022-01-31 22:35:14,953 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:35:17,884 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:35:19,915 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:35:25,221 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:35:26,659 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:35:30,177 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:35:32,225 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:35:33,715 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 [] [2022-01-31 22:35:34,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:35:34,222 INFO L93 Difference]: Finished difference Result 1513 states and 2271 transitions. [2022-01-31 22:35:34,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-31 22:35:34,222 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 [2022-01-31 22:35:34,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:35:34,227 INFO L225 Difference]: With dead ends: 1513 [2022-01-31 22:35:34,228 INFO L226 Difference]: Without dead ends: 1480 [2022-01-31 22:35:34,228 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 [2022-01-31 22:35:34,229 INFO L933 BasicCegarLoop]: 759 mSDtfsCounter, 2222 mSDsluCounter, 915 mSDsCounter, 0 mSdLazyCounter, 2292 mSolverCounterSat, 1495 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2256 SdHoareTripleChecker+Valid, 1674 SdHoareTripleChecker+Invalid, 3792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1495 IncrementalHoareTripleChecker+Valid, 2292 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.5s IncrementalHoareTripleChecker+Time [2022-01-31 22:35:34,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2256 Valid, 1674 Invalid, 3792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1495 Valid, 2292 Invalid, 5 Unknown, 0 Unchecked, 25.5s Time] [2022-01-31 22:35:34,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1480 states. [2022-01-31 22:35:34,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1480 to 1162. [2022-01-31 22:35:34,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1162 states, 885 states have (on average 1.4011299435028248) internal successors, (1240), 891 states have internal predecessors, (1240), 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) [2022-01-31 22:35:34,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1162 states to 1162 states and 1674 transitions. [2022-01-31 22:35:34,508 INFO L78 Accepts]: Start accepts. Automaton has 1162 states and 1674 transitions. Word has length 58 [2022-01-31 22:35:34,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:35:34,508 INFO L470 AbstractCegarLoop]: Abstraction has 1162 states and 1674 transitions. [2022-01-31 22:35:34,508 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) [2022-01-31 22:35:34,508 INFO L276 IsEmpty]: Start isEmpty. Operand 1162 states and 1674 transitions. [2022-01-31 22:35:34,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-31 22:35:34,510 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:35:34,510 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:35:34,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-31 22:35:34,510 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:35:34,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:35:34,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1496012614, now seen corresponding path program 1 times [2022-01-31 22:35:34,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:35:34,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051119900] [2022-01-31 22:35:34,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:35:34,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:35:34,521 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:35:34,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:35:34,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:35:34,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:35:34,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:35:34,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:35:34,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:35:34,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:35:34,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-01-31 22:35:34,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:35:34,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-31 22:35:34,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:35:34,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:35:34,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:35:34,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-01-31 22:35:34,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:35:34,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:35:34,846 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:35:34,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1051119900] [2022-01-31 22:35:34,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1051119900] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:35:34,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:35:34,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-31 22:35:34,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106826753] [2022-01-31 22:35:34,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:35:34,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-31 22:35:34,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:35:34,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-31 22:35:34,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-01-31 22:35:34,848 INFO L87 Difference]: Start difference. First operand 1162 states and 1674 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) [2022-01-31 22:35:43,871 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:35:46,551 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:35:49,360 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:35:51,384 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:35:57,000 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:36:00,029 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:36:02,057 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:36:04,475 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:36:06,501 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:36:09,525 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:36:13,865 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:36:16,423 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:36:17,762 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:36:18,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:36:18,263 INFO L93 Difference]: Finished difference Result 1496 states and 2249 transitions. [2022-01-31 22:36:18,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-31 22:36:18,263 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 [2022-01-31 22:36:18,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:36:18,267 INFO L225 Difference]: With dead ends: 1496 [2022-01-31 22:36:18,267 INFO L226 Difference]: Without dead ends: 1489 [2022-01-31 22:36:18,268 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 [2022-01-31 22:36:18,268 INFO L933 BasicCegarLoop]: 758 mSDtfsCounter, 763 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 3378 mSolverCounterSat, 521 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 1880 SdHoareTripleChecker+Invalid, 3910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 521 IncrementalHoareTripleChecker+Valid, 3378 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.6s IncrementalHoareTripleChecker+Time [2022-01-31 22:36:18,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [793 Valid, 1880 Invalid, 3910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [521 Valid, 3378 Invalid, 11 Unknown, 0 Unchecked, 42.6s Time] [2022-01-31 22:36:18,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1489 states. [2022-01-31 22:36:18,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1489 to 1176. [2022-01-31 22:36:18,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1176 states, 898 states have (on average 1.3975501113585747) internal successors, (1255), 904 states have internal predecessors, (1255), 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) [2022-01-31 22:36:18,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1176 states to 1176 states and 1690 transitions. [2022-01-31 22:36:18,562 INFO L78 Accepts]: Start accepts. Automaton has 1176 states and 1690 transitions. Word has length 58 [2022-01-31 22:36:18,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:36:18,562 INFO L470 AbstractCegarLoop]: Abstraction has 1176 states and 1690 transitions. [2022-01-31 22:36:18,562 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) [2022-01-31 22:36:18,562 INFO L276 IsEmpty]: Start isEmpty. Operand 1176 states and 1690 transitions. [2022-01-31 22:36:18,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-31 22:36:18,564 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:36:18,564 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:36:18,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-31 22:36:18,564 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:36:18,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:36:18,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1576428064, now seen corresponding path program 1 times [2022-01-31 22:36:18,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:36:18,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [215544946] [2022-01-31 22:36:18,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:36:18,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:36:18,574 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:36:18,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:36:18,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:36:18,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:36:18,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:36:18,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:36:18,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:36:18,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:36:18,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 22:36:18,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:36:18,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-01-31 22:36:18,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:36:18,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-31 22:36:18,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:36:18,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:36:18,922 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:36:18,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [215544946] [2022-01-31 22:36:18,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [215544946] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:36:18,922 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:36:18,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-01-31 22:36:18,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447232423] [2022-01-31 22:36:18,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:36:18,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-31 22:36:18,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:36:18,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-31 22:36:18,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-01-31 22:36:18,923 INFO L87 Difference]: Start difference. First operand 1176 states and 1690 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 7 states have internal predecessors, (45), 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) [2022-01-31 22:36:30,773 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:36:33,473 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:36:34,588 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:36:35,761 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:36:39,380 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:36:40,954 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:36:42,980 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:36:45,011 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:36:47,869 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:36:49,896 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:36:56,857 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:37:00,010 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:37:05,116 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:37:06,449 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:37:09,130 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:37:11,158 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:37:13,180 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:37:15,203 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:37:17,089 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:37:19,614 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:37:21,633 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:37:23,655 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:37:26,639 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:37:29,057 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:37:33,519 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:37:37,253 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:37:39,971 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:37:40,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:37:40,202 INFO L93 Difference]: Finished difference Result 1484 states and 2226 transitions. [2022-01-31 22:37:40,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-31 22:37:40,202 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 7 states have internal predecessors, (45), 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) Word has length 59 [2022-01-31 22:37:40,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:37:40,208 INFO L225 Difference]: With dead ends: 1484 [2022-01-31 22:37:40,208 INFO L226 Difference]: Without dead ends: 1467 [2022-01-31 22:37:40,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-01-31 22:37:40,209 INFO L933 BasicCegarLoop]: 777 mSDtfsCounter, 1145 mSDsluCounter, 3078 mSDsCounter, 0 mSdLazyCounter, 7667 mSolverCounterSat, 794 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 78.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1177 SdHoareTripleChecker+Valid, 3855 SdHoareTripleChecker+Invalid, 8477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 794 IncrementalHoareTripleChecker+Valid, 7667 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 80.5s IncrementalHoareTripleChecker+Time [2022-01-31 22:37:40,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1177 Valid, 3855 Invalid, 8477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [794 Valid, 7667 Invalid, 16 Unknown, 0 Unchecked, 80.5s Time] [2022-01-31 22:37:40,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1467 states. [2022-01-31 22:37:40,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1467 to 1174. [2022-01-31 22:37:40,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1174 states, 897 states have (on average 1.3968784838350057) internal successors, (1253), 903 states have internal predecessors, (1253), 184 states have call successors, (184), 79 states have call predecessors, (184), 92 states have return successors, (249), 191 states have call predecessors, (249), 177 states have call successors, (249) [2022-01-31 22:37:40,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 1686 transitions. [2022-01-31 22:37:40,508 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 1686 transitions. Word has length 59 [2022-01-31 22:37:40,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:37:40,508 INFO L470 AbstractCegarLoop]: Abstraction has 1174 states and 1686 transitions. [2022-01-31 22:37:40,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 7 states have internal predecessors, (45), 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) [2022-01-31 22:37:40,508 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 1686 transitions. [2022-01-31 22:37:40,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-31 22:37:40,510 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:37:40,510 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:37:40,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-31 22:37:40,510 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:37:40,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:37:40,511 INFO L85 PathProgramCache]: Analyzing trace with hash -878843838, now seen corresponding path program 1 times [2022-01-31 22:37:40,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:37:40,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [374299916] [2022-01-31 22:37:40,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:37:40,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:37:40,521 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:37:40,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:37:40,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:37:40,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:37:40,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:37:40,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:37:40,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:37:40,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:37:40,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 22:37:40,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:37:40,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-31 22:37:40,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:37:40,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-31 22:37:40,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:37:40,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:37:40,886 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:37:40,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [374299916] [2022-01-31 22:37:40,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [374299916] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:37:40,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:37:40,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-01-31 22:37:40,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279161566] [2022-01-31 22:37:40,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:37:40,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-31 22:37:40,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:37:40,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-31 22:37:40,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-01-31 22:37:40,888 INFO L87 Difference]: Start difference. First operand 1174 states and 1686 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) [2022-01-31 22:37:45,147 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 [] [2022-01-31 22:37:54,665 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:37:56,689 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:37:59,475 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:38:01,067 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:38:03,088 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:38:05,111 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:38:07,141 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:38:09,163 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []